]> git.ipfire.org Git - thirdparty/rspamd.git/commitdiff
[Project] Remove old code (finally)
authorVsevolod Stakhov <vsevolod@rspamd.com>
Sat, 30 Apr 2022 18:58:37 +0000 (19:58 +0100)
committerVsevolod Stakhov <vsevolod@rspamd.com>
Sat, 30 Apr 2022 18:58:37 +0000 (19:58 +0100)
src/libserver/rspamd_symcache.cxx [deleted file]

diff --git a/src/libserver/rspamd_symcache.cxx b/src/libserver/rspamd_symcache.cxx
deleted file mode 100644 (file)
index 35fa058..0000000
+++ /dev/null
@@ -1,3315 +0,0 @@
-/*-
- * Copyright 2016 Vsevolod Stakhov
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "config.h"
-#include "util.h"
-#include "rspamd.h"
-#include "message.h"
-#include "rspamd_symcache.h"
-#include "cfg_file.h"
-#include "lua/lua_common.h"
-#include "unix-std.h"
-#include "contrib/t1ha/t1ha.h"
-#include "libserver/worker_util.h"
-
-#include <cmath>
-#include <cstdlib>
-#include <cstdint>
-#include <vector>
-#include <string>
-#include <string_view>
-#include <memory>
-#include <variant>
-#include "libutil/cxx/local_shared_ptr.hxx"
-
-#include "contrib/robin-hood/robin_hood.h"
-
-
-INIT_LOG_MODULE(symcache)
-
-#define CHECK_START_BIT(checkpoint, dyn_item) \
-       ((dyn_item)->started)
-#define SET_START_BIT(checkpoint, dyn_item) \
-       (dyn_item)->started = 1
-#define CLR_START_BIT(checkpoint, dyn_item) \
-       (dyn_item)->started = 0
-
-#define CHECK_FINISH_BIT(checkpoint, dyn_item) \
-       ((dyn_item)->finished)
-#define SET_FINISH_BIT(checkpoint, dyn_item) \
-       (dyn_item)->finished = 1
-#define CLR_FINISH_BIT(checkpoint, dyn_item) \
-       (dyn_item)->finished = 0
-
-
-
-/* weight, frequency, time */
-#define TIME_ALPHA (1.0)
-#define WEIGHT_ALPHA (0.1)
-#define FREQ_ALPHA (0.01)
-#define SCORE_FUN(w, f, t) (((w) > 0 ? (w) : WEIGHT_ALPHA) \
-               * ((f) > 0 ? (f) : FREQ_ALPHA) \
-               / (t > TIME_ALPHA ? t : TIME_ALPHA))
-
-static gboolean rspamd_symcache_check_symbol (struct rspamd_task *task,
-               struct rspamd_symcache *cache,
-               struct rspamd_symcache_item *item,
-               struct cache_savepoint *checkpoint);
-static gboolean rspamd_symcache_check_deps (struct rspamd_task *task,
-               struct rspamd_symcache *cache,
-               struct rspamd_symcache_item *item,
-               struct cache_savepoint *checkpoint,
-               guint recursion,
-               gboolean check_only);
-static void rspamd_symcache_disable_symbol_checkpoint (struct rspamd_task *task,
-               struct rspamd_symcache *cache, const gchar *symbol);
-static void rspamd_symcache_enable_symbol_checkpoint (struct rspamd_task *task,
-               struct rspamd_symcache *cache, const gchar *symbol);
-
-static void
-rspamd_symcache_order_dtor (gpointer p)
-{
-       struct symcache_order *ord = p;
-
-       g_ptr_array_free (ord->d, TRUE);
-       g_free (ord);
-}
-
-static void
-rspamd_symcache_order_unref (gpointer p)
-{
-       struct symcache_order *ord = p;
-
-       REF_RELEASE (ord);
-}
-
-static gint
-rspamd_id_cmp (const void * a, const void * b)
-{
-       return (*(guint32*)a - *(guint32*)b);
-}
-
-static struct symcache_order *
-rspamd_symcache_order_new (struct rspamd_symcache *cache,
-               gsize nelts)
-{
-       struct symcache_order *ord;
-
-       ord = g_malloc0 (sizeof (*ord));
-       ord->d = g_ptr_array_sized_new (nelts);
-       ord->id = cache->id;
-       REF_INIT_RETAIN (ord, rspamd_symcache_order_dtor);
-
-       return ord;
-}
-
-static inline struct rspamd_symcache_dynamic_item*
-rspamd_symcache_get_dynamic (struct cache_savepoint *checkpoint,
-                                                        struct rspamd_symcache_item *item)
-{
-       return &checkpoint->dynamic_items[item->id];
-}
-
-static inline struct rspamd_symcache_item *
-rspamd_symcache_find_filter (struct rspamd_symcache *cache,
-                                                        const gchar *name,
-                                                        bool resolve_parent)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-
-       if (name == NULL) {
-               return NULL;
-       }
-
-       item = g_hash_table_lookup (cache->items_by_symbol, name);
-
-       if (item != NULL) {
-
-               if (resolve_parent && item->is_virtual && !(item->type & SYMBOL_TYPE_GHOST)) {
-                       item =item->specific.virtual.parent_item;
-               }
-
-               return item;
-       }
-
-       return NULL;
-}
-
-const gchar *
-rspamd_symcache_get_parent (struct rspamd_symcache *cache,
-                                                                                const gchar *symbol)
-{
-       struct rspamd_symcache_item *item, *parent;
-
-       g_assert (cache != NULL);
-
-       if (symbol == NULL) {
-               return NULL;
-       }
-
-       item = g_hash_table_lookup (cache->items_by_symbol, symbol);
-
-       if (item != NULL) {
-
-               if (item->is_virtual && !(item->type & SYMBOL_TYPE_GHOST)) {
-                       parent = item->specific.virtual.parent_item;
-
-                       if (!parent) {
-                               item->specific.virtual.parent_item = g_ptr_array_index (cache->items_by_id,
-                                               item->specific.virtual.parent);
-                               parent = item->specific.virtual.parent_item;
-                       }
-
-                       item = parent;
-               }
-
-               return item->symbol;
-       }
-
-       return NULL;
-}
-
-static gint
-postfilters_cmp (const void *p1, const void *p2, gpointer ud)
-{
-       const struct rspamd_symcache_item *i1 = *(struct rspamd_symcache_item **)p1,
-                       *i2 = *(struct rspamd_symcache_item **)p2;
-       double w1, w2;
-
-       w1 = i1->priority;
-       w2 = i2->priority;
-
-       if (w1 > w2) {
-               return 1;
-       }
-       else if (w1 < w2) {
-               return -1;
-       }
-
-       return 0;
-}
-
-static gint
-prefilters_cmp (const void *p1, const void *p2, gpointer ud)
-{
-       const struct rspamd_symcache_item *i1 = *(struct rspamd_symcache_item **)p1,
-                       *i2 = *(struct rspamd_symcache_item **)p2;
-       double w1, w2;
-
-       w1 = i1->priority;
-       w2 = i2->priority;
-
-       if (w1 < w2) {
-               return 1;
-       }
-       else if (w1 > w2) {
-               return -1;
-       }
-
-       return 0;
-}
-
-#define TSORT_MARK_PERM(it) (it)->order |= (1u << 31)
-#define TSORT_MARK_TEMP(it) (it)->order |= (1u << 30)
-#define TSORT_IS_MARKED_PERM(it) ((it)->order & (1u << 31))
-#define TSORT_IS_MARKED_TEMP(it) ((it)->order & (1u << 30))
-#define TSORT_UNMASK(it) ((it)->order & ~((1u << 31) | (1u << 30)))
-
-static gint
-cache_logic_cmp (const void *p1, const void *p2, gpointer ud)
-{
-       const struct rspamd_symcache_item *i1 = *(struct rspamd_symcache_item **)p1,
-                       *i2 = *(struct rspamd_symcache_item **)p2;
-       struct rspamd_symcache *cache = ud;
-       double w1, w2;
-       double weight1, weight2;
-       double f1 = 0, f2 = 0, t1, t2, avg_freq, avg_weight;
-       guint o1 = TSORT_UNMASK (i1), o2 = TSORT_UNMASK (i2);
-
-
-       if (o1 == o2) {
-               /* Heuristic */
-               if (i1->priority == i2->priority) {
-                       avg_freq = ((gdouble) cache->total_hits / cache->used_items);
-                       avg_weight = (cache->total_weight / cache->used_items);
-                       f1 = (double) i1->st->total_hits / avg_freq;
-                       f2 = (double) i2->st->total_hits / avg_freq;
-                       weight1 = fabs (i1->st->weight) / avg_weight;
-                       weight2 = fabs (i2->st->weight) / avg_weight;
-                       t1 = i1->st->avg_time;
-                       t2 = i2->st->avg_time;
-                       w1 = SCORE_FUN (weight1, f1, t1);
-                       w2 = SCORE_FUN (weight2, f2, t2);
-               } else {
-                       /* Strict sorting */
-                       w1 = abs (i1->priority);
-                       w2 = abs (i2->priority);
-               }
-       }
-       else {
-               w1 = o1;
-               w2 = o2;
-       }
-
-       if (w2 > w1) {
-               return 1;
-       }
-       else if (w2 < w1) {
-               return -1;
-       }
-
-       return 0;
-}
-
-static void
-rspamd_symcache_tsort_visit (struct rspamd_symcache *cache,
-                                                                 struct rspamd_symcache_item *it,
-                                                                 guint cur_order)
-{
-       struct cache_dependency *dep;
-       guint i;
-
-       if (TSORT_IS_MARKED_PERM (it)) {
-               if (cur_order > TSORT_UNMASK (it)) {
-                       /* Need to recalculate the whole chain */
-                       it->order = cur_order; /* That also removes all masking */
-               }
-               else {
-                       /* We are fine, stop DFS */
-                       return;
-               }
-       }
-       else if (TSORT_IS_MARKED_TEMP (it)) {
-               msg_err_cache ("cyclic dependencies found when checking '%s'!",
-                               it->symbol);
-               return;
-       }
-
-       TSORT_MARK_TEMP (it);
-       msg_debug_cache ("visiting node: %s (%d)", it->symbol, cur_order);
-
-       PTR_ARRAY_FOREACH (it->deps, i, dep) {
-               msg_debug_cache ("visiting dep: %s (%d)", dep->item->symbol, cur_order + 1);
-               rspamd_symcache_tsort_visit (cache, dep->item, cur_order + 1);
-       }
-
-       it->order = cur_order;
-
-       TSORT_MARK_PERM (it);
-}
-
-static void
-rspamd_symcache_resort (struct rspamd_symcache *cache)
-{
-       struct symcache_order *ord;
-       guint i;
-       guint64 total_hits = 0;
-       struct rspamd_symcache_item *it;
-
-       ord = rspamd_symcache_order_new (cache, cache->filters->len);
-
-       for (i = 0; i < cache->filters->len; i ++) {
-               it = g_ptr_array_index (cache->filters, i);
-               total_hits += it->st->total_hits;
-               it->order = 0;
-               g_ptr_array_add (ord->d, it);
-       }
-
-       /* Topological sort, intended to be O(N) but my implementation
-        * is not linear (semi-linear usually) as I want to make it as
-        * simple as possible.
-        * On each stage it does DFS for unseen nodes. In theory, that
-        * can be more complicated than linear - O(N^2) for specially
-        * crafted data. But I don't care.
-        */
-       PTR_ARRAY_FOREACH (ord->d, i, it) {
-               if (it->order == 0) {
-                       rspamd_symcache_tsort_visit (cache, it, 1);
-               }
-       }
-
-       /*
-        * Now we have all sorted and can do some heuristical sort, keeping
-        * topological order invariant
-        */
-       g_ptr_array_sort_with_data (ord->d, cache_logic_cmp, cache);
-       cache->total_hits = total_hits;
-
-       if (cache->items_by_order) {
-               REF_RELEASE (cache->items_by_order);
-       }
-
-       cache->items_by_order = ord;
-}
-
-static void
-rspamd_symcache_propagate_dep (struct rspamd_symcache *cache,
-                                                          struct rspamd_symcache_item *it,
-                                                          struct rspamd_symcache_item *dit)
-{
-       const guint *ids;
-       guint nids = 0;
-
-       msg_debug_cache ("check id propagation for dependency %s from %s",
-                       it->symbol, dit->symbol);
-       ids = rspamd_symcache_get_allowed_settings_ids (cache, dit->symbol, &nids);
-
-       /* TODO: merge? */
-       if (nids > 0) {
-               msg_info_cache ("propagate allowed ids from %s to %s",
-                               dit->symbol, it->symbol);
-
-               rspamd_symcache_set_allowed_settings_ids (cache, it->symbol, ids,
-                               nids);
-       }
-
-       ids = rspamd_symcache_get_forbidden_settings_ids (cache, dit->symbol, &nids);
-
-       if (nids > 0) {
-               msg_info_cache ("propagate forbidden ids from %s to %s",
-                               dit->symbol, it->symbol);
-
-               rspamd_symcache_set_forbidden_settings_ids (cache, it->symbol, ids,
-                               nids);
-       }
-}
-
-static void
-rspamd_symcache_process_dep (struct rspamd_symcache *cache,
-                                                        struct rspamd_symcache_item *it,
-                                                        struct cache_dependency *dep)
-{
-       struct rspamd_symcache_item *dit = NULL, *vdit = NULL;
-       struct cache_dependency *rdep;
-
-       if (dep->id >= 0) {
-               msg_debug_cache ("process real dependency %s on %s", it->symbol, dep->sym);
-               dit = rspamd_symcache_find_filter (cache, dep->sym, true);
-       }
-
-       if (dep->vid >= 0) {
-               /* Case of the virtual symbol that depends on another (maybe virtual) symbol */
-               vdit = rspamd_symcache_find_filter (cache, dep->sym, false);
-
-               if (!vdit) {
-                       if (dit) {
-                               msg_err_cache ("cannot add dependency from %s on %s: no dependency symbol registered",
-                                               dep->sym, dit->symbol);
-                       }
-               }
-               else {
-                       msg_debug_cache ("process virtual dependency %s(%d) on %s(%d)", it->symbol,
-                                       dep->vid, vdit->symbol, vdit->id);
-               }
-       }
-       else {
-               vdit = dit;
-       }
-
-       if (dit != NULL) {
-               if (!dit->is_filter) {
-                       /*
-                        * Check sanity:
-                        * - filters -> prefilter dependency is OK and always satisfied
-                        * - postfilter -> (filter, prefilter) dep is ok
-                        * - idempotent -> (any) dep is OK
-                        *
-                        * Otherwise, emit error
-                        * However, even if everything is fine this dep is useless ¯\_(ツ)_/¯
-                        */
-                       gboolean ok_dep = FALSE;
-
-                       if (it->is_filter) {
-                               if (dit->is_filter) {
-                                       ok_dep = TRUE;
-                               }
-                               else if (dit->type & SYMBOL_TYPE_PREFILTER) {
-                                       ok_dep = TRUE;
-                               }
-                       }
-                       else if (it->type & SYMBOL_TYPE_POSTFILTER) {
-                               if (dit->type & SYMBOL_TYPE_PREFILTER) {
-                                       ok_dep = TRUE;
-                               }
-                       }
-                       else if (it->type & SYMBOL_TYPE_IDEMPOTENT) {
-                               if (dit->type & (SYMBOL_TYPE_PREFILTER|SYMBOL_TYPE_POSTFILTER)) {
-                                       ok_dep = TRUE;
-                               }
-                       }
-                       else if (it->type & SYMBOL_TYPE_PREFILTER) {
-                               if (it->priority < dit->priority) {
-                                       /* Also OK */
-                                       ok_dep = TRUE;
-                               }
-                       }
-
-                       if (!ok_dep) {
-                               msg_err_cache ("cannot add dependency from %s on %s: invalid symbol types",
-                                               dep->sym, dit->symbol);
-
-                               return;
-                       }
-               }
-               else {
-                       if (dit->id == it->id) {
-                               msg_err_cache ("cannot add dependency on self: %s -> %s "
-                                                          "(resolved to %s)",
-                                               it->symbol, dep->sym, dit->symbol);
-                       } else {
-                               rdep = rspamd_mempool_alloc (cache->static_pool,
-                                               sizeof (*rdep));
-
-                               rdep->sym = dep->sym;
-                               rdep->item = it;
-                               rdep->id = it->id;
-                               g_assert (dit->rdeps != NULL);
-                               g_ptr_array_add (dit->rdeps, rdep);
-                               dep->item = dit;
-                               dep->id = dit->id;
-
-                               msg_debug_cache ("add dependency from %d on %d", it->id,
-                                               dit->id);
-                       }
-               }
-       }
-       else if (dep->id >= 0) {
-               msg_err_cache ("cannot find dependency on symbol %s for symbol %s",
-                               dep->sym, it->symbol);
-
-               return;
-       }
-
-       if (vdit) {
-               /* Use virtual symbol to propagate deps */
-               rspamd_symcache_propagate_dep (cache, it, vdit);
-       }
-}
-
-#define ROUND_DOUBLE(x) (floor((x) * 100.0) / 100.0)
-
-static gboolean
-rspamd_symcache_save_items (struct rspamd_symcache *cache, const gchar *name)
-{
-       struct rspamd_symcache_header hdr;
-       ucl_object_t *top, *elt, *freq;
-       GHashTableIter it;
-       struct rspamd_symcache_item *item;
-       struct ucl_emitter_functions *efunc;
-       gpointer k, v;
-       gint fd;
-       FILE *fp;
-       bool ret;
-       gchar path[PATH_MAX];
-
-       rspamd_snprintf (path, sizeof (path), "%s.new", name);
-
-       fd = open (path, O_CREAT | O_WRONLY | O_EXCL, 00644);
-
-       if (fd == -1) {
-               if (errno == EEXIST) {
-                       /* Some other process is already writing data, give up silently */
-                       return TRUE;
-               }
-
-               msg_err_cache ("cannot open file %s, error %d, %s", path,
-                               errno, strerror (errno));
-               return FALSE;
-       }
-
-       rspamd_file_lock (fd, FALSE);
-       fp = fdopen (fd, "w");
-
-       memset (&hdr, 0, sizeof (hdr));
-       memcpy (hdr.magic, rspamd_symcache_magic,
-                       sizeof (rspamd_symcache_magic));
-
-       if (fwrite (&hdr, sizeof (hdr), 1, fp) == -1) {
-               msg_err_cache ("cannot write to file %s, error %d, %s", path,
-                               errno, strerror (errno));
-               rspamd_file_unlock (fd, FALSE);
-               fclose (fp);
-
-               return FALSE;
-       }
-
-       top = ucl_object_typed_new (UCL_OBJECT);
-       g_hash_table_iter_init (&it, cache->items_by_symbol);
-
-       while (g_hash_table_iter_next (&it, &k, &v)) {
-               item = v;
-               elt = ucl_object_typed_new (UCL_OBJECT);
-               ucl_object_insert_key (elt,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->weight)),
-                               "weight", 0, false);
-               ucl_object_insert_key (elt,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->time_counter.mean)),
-                               "time", 0, false);
-               ucl_object_insert_key (elt, ucl_object_fromint (item->st->total_hits),
-                               "count", 0, false);
-
-               freq = ucl_object_typed_new (UCL_OBJECT);
-               ucl_object_insert_key (freq,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->frequency_counter.mean)),
-                               "avg", 0, false);
-               ucl_object_insert_key (freq,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->frequency_counter.stddev)),
-                               "stddev", 0, false);
-               ucl_object_insert_key (elt, freq, "frequency", 0, false);
-
-               ucl_object_insert_key (top, elt, k, 0, false);
-       }
-
-       efunc = ucl_object_emit_file_funcs (fp);
-       ret = ucl_object_emit_full (top, UCL_EMIT_JSON_COMPACT, efunc, NULL);
-       ucl_object_emit_funcs_free (efunc);
-       ucl_object_unref (top);
-       rspamd_file_unlock (fd, FALSE);
-       fclose (fp);
-
-       if (rename (path, name) == -1) {
-               msg_err_cache ("cannot rename %s -> %s, error %d, %s", path, name,
-                               errno, strerror (errno));
-               (void)unlink (path);
-               ret = FALSE;
-       }
-
-       return ret;
-}
-
-#undef ROUND_DOUBLE
-
-gint
-rspamd_symcache_add_symbol (struct rspamd_symcache *cache,
-                                                       const gchar *name,
-                                                       gint priority,
-                                                       symbol_func_t func,
-                                                       gpointer user_data,
-                                                       enum rspamd_symbol_type type,
-                                                       gint parent)
-{
-       struct rspamd_symcache_item *item = NULL;
-       const gchar *type_str = "normal";
-
-       g_assert (cache != NULL);
-
-       if (name == NULL && !(type & SYMBOL_TYPE_CALLBACK)) {
-               msg_warn_cache ("no name for non-callback symbol!");
-       }
-       else if ((type & SYMBOL_TYPE_VIRTUAL & (~SYMBOL_TYPE_GHOST)) && parent == -1) {
-               msg_warn_cache ("no parent symbol is associated with virtual symbol %s",
-                       name);
-       }
-
-       if (name != NULL && !(type & SYMBOL_TYPE_CALLBACK)) {
-               struct rspamd_symcache_item *existing;
-
-               if (strcspn (name, " \t\n\r") != strlen (name)) {
-                       msg_warn_cache ("bogus characters in symbol name: \"%s\"",
-                                       name);
-               }
-
-               if ((existing = g_hash_table_lookup (cache->items_by_symbol, name)) != NULL) {
-
-                       if (existing->type & SYMBOL_TYPE_GHOST) {
-                               /*
-                                * Complicated part:
-                                * - we need to remove the existing ghost symbol
-                                * - we need to cleanup containers:
-                                *   - symbols hash
-                                *   - specific array
-                                *   - items_by_it
-                                *   - decrement used_items
-                                */
-                               msg_info_cache ("duplicate ghost symbol %s is removed", name);
-
-                               if (existing->container) {
-                                       g_ptr_array_remove (existing->container, existing);
-                               }
-
-                               g_ptr_array_remove (cache->items_by_id, existing->container);
-                               cache->used_items --;
-                               g_hash_table_remove (cache->items_by_symbol, name);
-                               /*
-                                * Here can be memory leak, but we assume that ghost symbols
-                                * are also virtual
-                                */
-                       }
-                       else {
-                               msg_err_cache ("skip duplicate symbol registration for %s", name);
-                               return -1;
-                       }
-               }
-       }
-
-       if (type & (SYMBOL_TYPE_CLASSIFIER|SYMBOL_TYPE_CALLBACK|
-                       SYMBOL_TYPE_PREFILTER|SYMBOL_TYPE_POSTFILTER|
-                       SYMBOL_TYPE_IDEMPOTENT|SYMBOL_TYPE_GHOST)) {
-               type |= SYMBOL_TYPE_NOSTAT;
-       }
-
-       item = rspamd_mempool_alloc0 (cache->static_pool,
-                       sizeof (struct rspamd_symcache_item));
-       item->st = rspamd_mempool_alloc0_shared (cache->static_pool,
-                       sizeof (*item->st));
-       item->enabled = TRUE;
-
-       /*
-        * We do not share cd to skip locking, instead we'll just calculate it on
-        * save or accumulate
-        */
-       item->cd = rspamd_mempool_alloc0 (cache->static_pool,
-                       sizeof (struct rspamd_counter_data));
-       item->priority = priority;
-       item->type = type;
-
-       if ((type & SYMBOL_TYPE_FINE) && item->priority == 0) {
-               /* Make priority for negative weighted symbols */
-               item->priority = 1;
-       }
-
-       if (func) {
-               /* Non-virtual symbol */
-               g_assert (parent == -1);
-
-               if (item->type & SYMBOL_TYPE_PREFILTER) {
-                       type_str = "prefilter";
-                       g_ptr_array_add (cache->prefilters, item);
-                       item->container = cache->prefilters;
-               }
-               else if (item->type & SYMBOL_TYPE_IDEMPOTENT) {
-                       type_str = "idempotent";
-                       g_ptr_array_add (cache->idempotent, item);
-                       item->container = cache->idempotent;
-               }
-               else if (item->type & SYMBOL_TYPE_POSTFILTER) {
-                       type_str = "postfilter";
-                       g_ptr_array_add (cache->postfilters, item);
-                       item->container = cache->postfilters;
-               }
-               else if (item->type & SYMBOL_TYPE_CONNFILTER) {
-                       type_str = "connfilter";
-                       g_ptr_array_add (cache->connfilters, item);
-                       item->container = cache->connfilters;
-               }
-               else {
-                       item->is_filter = TRUE;
-                       g_ptr_array_add (cache->filters, item);
-                       item->container = cache->filters;
-               }
-
-               item->id = cache->items_by_id->len;
-               g_ptr_array_add (cache->items_by_id, item);
-
-               item->specific.normal.func = func;
-               item->specific.normal.user_data = user_data;
-               item->specific.normal.conditions = NULL;
-       }
-       else {
-               /*
-                * Three possibilities here when no function is specified:
-                * - virtual symbol (beware of ghosts!)
-                * - classifier symbol
-                * - composite symbol
-                */
-               if (item->type & SYMBOL_TYPE_COMPOSITE) {
-                       item->specific.normal.conditions = NULL;
-                       item->specific.normal.user_data = user_data;
-                       g_assert (user_data != NULL);
-                       g_ptr_array_add (cache->composites, item);
-
-                       item->id = cache->items_by_id->len;
-                       g_ptr_array_add (cache->items_by_id, item);
-                       item->container = cache->composites;
-                       type_str = "composite";
-               }
-               else if (item->type & SYMBOL_TYPE_CLASSIFIER) {
-                       /* Treat it as normal symbol to allow enable/disable */
-                       item->id = cache->items_by_id->len;
-                       g_ptr_array_add (cache->items_by_id, item);
-
-                       item->is_filter = TRUE;
-                       item->specific.normal.func = NULL;
-                       item->specific.normal.user_data = NULL;
-                       item->specific.normal.conditions = NULL;
-                       type_str = "classifier";
-               }
-               else {
-                       item->is_virtual = TRUE;
-                       item->specific.virtual.parent = parent;
-                       item->specific.virtual.parent_item =
-                                       g_ptr_array_index (cache->items_by_id, parent);
-                       item->id = cache->virtual->len;
-                       g_ptr_array_add (cache->virtual, item);
-                       item->container = cache->virtual;
-                       /* Not added to items_by_id, handled by parent */
-                       type_str = "virtual";
-               }
-       }
-
-       cache->used_items ++;
-       cache->id ++;
-
-       if (!(item->type &
-                       (SYMBOL_TYPE_IDEMPOTENT|SYMBOL_TYPE_NOSTAT|SYMBOL_TYPE_CLASSIFIER))) {
-               if (name != NULL) {
-                       cache->cksum = t1ha (name, strlen (name),
-                                       cache->cksum);
-               } else {
-                       cache->cksum = t1ha (&item->id, sizeof (item->id),
-                                       cache->cksum);
-               }
-
-               cache->stats_symbols_count ++;
-       }
-
-       if (name != NULL) {
-               item->symbol = rspamd_mempool_strdup (cache->static_pool, name);
-               msg_debug_cache ("used items: %d, added symbol: %s, %d; symbol type: %s",
-                               cache->used_items, name, item->id, type_str);
-       } else {
-               g_assert (func != NULL);
-               msg_debug_cache ("used items: %d, added unnamed symbol: %d; symbol type: %s",
-                               cache->used_items, item->id, type_str);
-       }
-
-       item->deps = g_ptr_array_new ();
-       item->rdeps = g_ptr_array_new ();
-       item->type_descr = type_str;
-       rspamd_mempool_add_destructor (cache->static_pool,
-                       rspamd_ptr_array_free_hard, item->deps);
-       rspamd_mempool_add_destructor (cache->static_pool,
-                       rspamd_ptr_array_free_hard, item->rdeps);
-
-       if (name != NULL) {
-               g_hash_table_insert (cache->items_by_symbol, item->symbol, item);
-       }
-
-       return item->id;
-}
-
-void
-rspamd_symcache_set_peak_callback (struct rspamd_symcache *cache,
-                                                                  gint cbref)
-{
-       g_assert (cache != NULL);
-
-       if (cache->peak_cb != -1) {
-               luaL_unref (cache->cfg->lua_state, LUA_REGISTRYINDEX,
-                               cache->peak_cb);
-       }
-
-       cache->peak_cb = cbref;
-       msg_info_cache ("registered peak callback");
-}
-
-gboolean
-rspamd_symcache_add_condition_delayed (struct rspamd_symcache *cache,
-                                                                          const gchar *sym, lua_State *L, gint cbref)
-{
-       struct delayed_cache_condition *ncond;
-
-       g_assert (cache != NULL);
-       g_assert (sym != NULL);
-
-       ncond = g_malloc0 (sizeof (*ncond));
-       ncond->sym = g_strdup (sym);
-       ncond->cbref = cbref;
-       ncond->L = L;
-       cache->id ++;
-
-       cache->delayed_conditions = g_list_prepend (cache->delayed_conditions, ncond);
-
-       return TRUE;
-}
-
-void
-rspamd_symcache_save (struct rspamd_symcache *cache)
-{
-       if (cache != NULL) {
-
-               if (cache->cfg->cache_filename) {
-                       /* Try to sync values to the disk */
-                       if (!rspamd_symcache_save_items (cache,
-                                       cache->cfg->cache_filename)) {
-                               msg_err_cache ("cannot save cache data to %s: %s",
-                                               cache->cfg->cache_filename, strerror (errno));
-                       }
-               }
-       }
-}
-
-
-static void
-rspamd_symcache_metric_connect_cb (gpointer k, gpointer v, gpointer ud)
-{
-       struct rspamd_symcache *cache = (struct rspamd_symcache *)ud;
-       const gchar *sym = k;
-       struct rspamd_symbol *s = (struct rspamd_symbol *)v;
-       gdouble weight;
-       struct rspamd_symcache_item *item;
-
-       weight = *s->weight_ptr;
-       item = g_hash_table_lookup (cache->items_by_symbol, sym);
-
-       if (item) {
-               item->st->weight = weight;
-               s->cache_item = item;
-       }
-}
-
-
-
-
-static void
-rspamd_symcache_validate_cb (gpointer k, gpointer v, gpointer ud)
-{
-       struct rspamd_symcache_item *item = v, *parent;
-       struct rspamd_config *cfg;
-       struct rspamd_symcache *cache = (struct rspamd_symcache *)ud;
-       struct rspamd_symbol *s;
-       gboolean skipped, ghost;
-       gint p1, p2;
-
-       ghost = item->st->weight == 0 ? TRUE : FALSE;
-       cfg = cache->cfg;
-
-       /* Check whether this item is skipped */
-       skipped = !ghost;
-       g_assert (cfg != NULL);
-
-       if ((item->type &
-                       (SYMBOL_TYPE_NORMAL|SYMBOL_TYPE_VIRTUAL|SYMBOL_TYPE_COMPOSITE|SYMBOL_TYPE_CLASSIFIER))
-                       && g_hash_table_lookup (cfg->symbols, item->symbol) == NULL) {
-
-               if (!isnan(cfg->unknown_weight)) {
-
-                       skipped = FALSE;
-                       item->st->weight = cfg->unknown_weight;
-                       s = rspamd_mempool_alloc0 (cache->static_pool,
-                                       sizeof (*s));
-                       s->name = item->symbol;
-                       s->weight_ptr = &item->st->weight;
-                       g_hash_table_insert (cfg->symbols, item->symbol, s);
-
-                       msg_info_cache ("adding unknown symbol %s with weight: %.2f",
-                                       item->symbol, cfg->unknown_weight);
-                       ghost = FALSE;
-               }
-               else {
-                       skipped = TRUE;
-               }
-       }
-       else {
-               skipped = FALSE;
-       }
-
-       if (!ghost && skipped) {
-               if (!(item->type & SYMBOL_TYPE_SKIPPED)) {
-                       item->type |= SYMBOL_TYPE_SKIPPED;
-                       msg_warn_cache ("symbol %s has no score registered, skip its check",
-                                       item->symbol);
-               }
-       }
-
-       if (ghost) {
-               msg_debug_cache ("symbol %s is registered as ghost symbol, it won't be inserted "
-                               "to any metric", item->symbol);
-       }
-
-       if (item->st->weight < 0 && item->priority == 0) {
-               item->priority ++;
-       }
-
-       if (item->is_virtual) {
-               if (!(item->type & SYMBOL_TYPE_GHOST)) {
-                       g_assert (item->specific.virtual.parent != -1);
-                       g_assert (item->specific.virtual.parent < (gint) cache->items_by_id->len);
-                       parent = g_ptr_array_index (cache->items_by_id,
-                                       item->specific.virtual.parent);
-                       item->specific.virtual.parent_item = parent;
-
-                       if (fabs (parent->st->weight) < fabs (item->st->weight)) {
-                               parent->st->weight = item->st->weight;
-                       }
-
-                       p1 = abs (item->priority);
-                       p2 = abs (parent->priority);
-
-                       if (p1 != p2) {
-                               parent->priority = MAX (p1, p2);
-                               item->priority = parent->priority;
-                       }
-               }
-       }
-
-       cache->total_weight += fabs (item->st->weight);
-}
-
-gboolean
-rspamd_symcache_validate (struct rspamd_symcache *cache,
-                                                 struct rspamd_config *cfg,
-                                                 gboolean strict)
-{
-       struct rspamd_symcache_item *item;
-       GHashTableIter it;
-       gpointer k, v;
-       struct rspamd_symbol *sym_def;
-       gboolean ignore_symbol = FALSE, ret = TRUE;
-
-       if (cache == NULL) {
-               msg_err ("empty cache is invalid");
-               return FALSE;
-       }
-
-
-       g_hash_table_foreach (cache->items_by_symbol,
-                       rspamd_symcache_validate_cb,
-                       cache);
-       /* Now check each metric item and find corresponding symbol in a cache */
-       g_hash_table_iter_init (&it, cfg->symbols);
-
-       while (g_hash_table_iter_next (&it, &k, &v)) {
-               ignore_symbol = FALSE;
-               sym_def = v;
-
-               if (sym_def && (sym_def->flags &
-                               (RSPAMD_SYMBOL_FLAG_IGNORE_METRIC|RSPAMD_SYMBOL_FLAG_DISABLED))) {
-                       ignore_symbol = TRUE;
-               }
-
-               if (!ignore_symbol) {
-                       item = g_hash_table_lookup (cache->items_by_symbol, k);
-
-                       if (item == NULL) {
-                               msg_warn_cache (
-                                               "symbol '%s' has its score defined but there is no "
-                                                               "corresponding rule registered",
-                                               k);
-                               if (strict) {
-                                       ret = FALSE;
-                               }
-                       }
-               }
-               else if (sym_def->flags & RSPAMD_SYMBOL_FLAG_DISABLED) {
-                       item = g_hash_table_lookup (cache->items_by_symbol, k);
-
-                       if (item) {
-                               item->enabled = FALSE;
-                       }
-               }
-       }
-
-       return ret;
-}
-
-/* Return true if metric has score that is more than spam score for it */
-static gboolean
-rspamd_symcache_metric_limit (struct rspamd_task *task,
-               struct cache_savepoint *cp)
-{
-       struct rspamd_scan_result *res;
-       double ms;
-
-       if (task->flags & RSPAMD_TASK_FLAG_PASS_ALL) {
-               return FALSE;
-       }
-
-       if (cp->lim == 0.0) {
-               res = task->result;
-
-               if (res) {
-                       ms = rspamd_task_get_required_score (task, res);
-
-                       if (!isnan (ms) && cp->lim < ms) {
-                               cp->rs = res;
-                               cp->lim = ms;
-                       }
-               }
-       }
-
-       if (cp->rs) {
-
-               if (cp->rs->score > cp->lim) {
-                       return TRUE;
-               }
-       }
-       else {
-               /* No reject score define, always check all rules */
-               cp->lim = -1;
-       }
-
-       return FALSE;
-}
-
-static inline gboolean
-rspamd_symcache_check_id_list (const struct rspamd_symcache_id_list *ls, guint32 id)
-{
-       guint i;
-
-       if (ls->dyn.e == -1) {
-               guint *res = bsearch (&id, ls->dyn.n, ls->dyn.len, sizeof (guint32),
-                               rspamd_id_cmp);
-
-               if (res) {
-                       return TRUE;
-               }
-       }
-       else {
-               for (i = 0; i < G_N_ELEMENTS (ls->st); i ++) {
-                       if (ls->st[i] == id) {
-                               return TRUE;
-                       }
-                       else if (ls->st[i] == 0) {
-                               return FALSE;
-                       }
-               }
-       }
-
-       return FALSE;
-}
-
-gboolean
-rspamd_symcache_is_item_allowed (struct rspamd_task *task,
-                                                                struct rspamd_symcache_item *item,
-                                                                gboolean exec_only)
-{
-       const gchar *what = "execution";
-
-       if (!exec_only) {
-               what = "symbol insertion";
-       }
-
-       /* Static checks */
-       if (!item->enabled ||
-               (RSPAMD_TASK_IS_EMPTY (task) && !(item->type & SYMBOL_TYPE_EMPTY)) ||
-               (item->type & SYMBOL_TYPE_MIME_ONLY && !RSPAMD_TASK_IS_MIME(task))) {
-
-               if (!item->enabled) {
-                       msg_debug_cache_task ("skipping %s of %s as it is permanently disabled; symbol type=%s",
-                                       what, item->symbol, item->type_descr);
-
-                       return FALSE;
-               }
-               else {
-                       /*
-                        * Exclude virtual symbols
-                        */
-                       if (exec_only) {
-                               msg_debug_cache_task ("skipping check of %s as it cannot be "
-                                                                         "executed for this task type; symbol type=%s",
-                                               item->symbol, item->type_descr);
-
-                               return FALSE;
-                       }
-               }
-       }
-
-       /* Settings checks */
-       if (task->settings_elt != 0) {
-               guint32 id = task->settings_elt->id;
-
-               if (item->forbidden_ids.st[0] != 0 &&
-                       rspamd_symcache_check_id_list (&item->forbidden_ids,
-                                       id)) {
-                       msg_debug_cache_task ("deny %s of %s as it is forbidden for "
-                                                "settings id %ud; symbol type=%s",
-                                                what,
-                                                item->symbol,
-                                                id,
-                                                item->type_descr);
-
-                       return FALSE;
-               }
-
-               if (!(item->type & SYMBOL_TYPE_EXPLICIT_DISABLE)) {
-                       if (item->allowed_ids.st[0] == 0 ||
-                               !rspamd_symcache_check_id_list (&item->allowed_ids,
-                                               id)) {
-
-                               if (task->settings_elt->policy == RSPAMD_SETTINGS_POLICY_IMPLICIT_ALLOW) {
-                                       msg_debug_cache_task ("allow execution of %s settings id %ud "
-                                                                                 "allows implicit execution of the symbols;"
-                                                                                 "symbol type=%s",
-                                                       item->symbol,
-                                                       id,
-                                                       item->type_descr);
-
-                                       return TRUE;
-                               }
-
-                               if (exec_only) {
-                                       /*
-                                        * Special case if any of our virtual children are enabled
-                                        */
-                                       if (rspamd_symcache_check_id_list (&item->exec_only_ids, id)) {
-                                               return TRUE;
-                                       }
-                               }
-
-                               msg_debug_cache_task ("deny %s of %s as it is not listed "
-                                                                         "as allowed for settings id %ud; symbol type=%s",
-                                               what,
-                                               item->symbol,
-                                               id,
-                                               item->type_descr);
-                               return FALSE;
-                       }
-               }
-               else {
-                       msg_debug_cache_task ("allow %s of %s for "
-                                                                 "settings id %ud as it can be only disabled explicitly;"
-                                                                 " symbol type=%s",
-                                       what,
-                                       item->symbol,
-                                       id,
-                                       item->type_descr);
-               }
-       }
-       else if (item->type & SYMBOL_TYPE_EXPLICIT_ENABLE) {
-               msg_debug_cache_task ("deny %s of %s as it must be explicitly enabled; symbol type=%s",
-                               what,
-                               item->symbol,
-                               item->type_descr);
-               return FALSE;
-       }
-
-       /* Allow all symbols with no settings id */
-       return TRUE;
-}
-
-static gboolean
-rspamd_symcache_check_symbol (struct rspamd_task *task,
-               struct rspamd_symcache *cache,
-               struct rspamd_symcache_item *item,
-               struct cache_savepoint *checkpoint)
-{
-       struct rspamd_task **ptask;
-       lua_State *L;
-       gboolean check = TRUE;
-       struct rspamd_symcache_dynamic_item *dyn_item =
-                       rspamd_symcache_get_dynamic (checkpoint, item);
-
-       if (item->type & (SYMBOL_TYPE_CLASSIFIER|SYMBOL_TYPE_COMPOSITE)) {
-               /* Classifiers are special :( */
-               return TRUE;
-       }
-
-       if (rspamd_session_blocked (task->s)) {
-               /*
-                * We cannot add new events as session is either destroyed or
-                * being cleaned up.
-                */
-               return TRUE;
-       }
-
-       g_assert (!item->is_virtual);
-       g_assert (item->specific.normal.func != NULL);
-       if (CHECK_START_BIT (checkpoint, dyn_item)) {
-               /*
-                * This can actually happen when deps span over different layers
-                */
-               return CHECK_FINISH_BIT (checkpoint, dyn_item);
-       }
-
-       /* Check has been started */
-       SET_START_BIT (checkpoint, dyn_item);
-
-       if (!rspamd_symcache_is_item_allowed (task, item, TRUE)) {
-               check = FALSE;
-       }
-       else if (item->specific.normal.conditions) {
-               struct rspamd_symcache_condition *cur_cond;
-
-               DL_FOREACH (item->specific.normal.conditions, cur_cond) {
-                       /* We also executes condition callback to check if we need this symbol */
-                       L = task->cfg->lua_state;
-                       lua_rawgeti (L, LUA_REGISTRYINDEX, cur_cond->cb);
-                       ptask = lua_newuserdata (L, sizeof (struct rspamd_task *));
-                       rspamd_lua_setclass (L, "rspamd{task}", -1);
-                       *ptask = task;
-
-                       if (lua_pcall (L, 1, 1, 0) != 0) {
-                               msg_info_task ("call to condition for %s failed: %s",
-                                               item->symbol, lua_tostring (L, -1));
-                               lua_pop (L, 1);
-                       }
-                       else {
-                               check = lua_toboolean (L, -1);
-                               lua_pop (L, 1);
-                       }
-
-                       if (!check) {
-                               break;
-                       }
-               }
-
-               if (!check) {
-                       msg_debug_cache_task ("skipping check of %s as its start condition is false; "
-                                                                 "symbol type = %s",
-                                       item->symbol, item->type_descr);
-               }
-       }
-
-       if (check) {
-               msg_debug_cache_task ("execute %s, %d; symbol type = %s", item->symbol,
-                               item->id, item->type_descr);
-
-               if (checkpoint->profile) {
-                       ev_now_update_if_cheap (task->event_loop);
-                       dyn_item->start_msec = (ev_now (task->event_loop) -
-                                       checkpoint->profile_start) * 1e3;
-               }
-
-               dyn_item->async_events = 0;
-               checkpoint->cur_item = item;
-               checkpoint->items_inflight ++;
-               /* Callback now must finalize itself */
-               item->specific.normal.func (task, item, item->specific.normal.user_data);
-               checkpoint->cur_item = NULL;
-
-               if (checkpoint->items_inflight == 0) {
-
-                       return TRUE;
-               }
-
-               if (dyn_item->async_events == 0 && !CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                       msg_err_cache ("critical error: item %s has no async events pending, "
-                                                  "but it is not finalised", item->symbol);
-                       g_assert_not_reached ();
-               }
-
-               return FALSE;
-       }
-       else {
-               SET_FINISH_BIT (checkpoint, dyn_item);
-       }
-
-       return TRUE;
-}
-
-static gboolean
-rspamd_symcache_check_deps (struct rspamd_task *task,
-               struct rspamd_symcache *cache,
-               struct rspamd_symcache_item *item,
-               struct cache_savepoint *checkpoint,
-               guint recursion,
-               gboolean check_only)
-{
-       struct cache_dependency *dep;
-       guint i;
-       gboolean ret = TRUE;
-       static const guint max_recursion = 20;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-
-       if (recursion > max_recursion) {
-               msg_err_task ("cyclic dependencies: maximum check level %ud exceed when "
-                               "checking dependencies for %s", max_recursion, item->symbol);
-
-               return TRUE;
-       }
-
-       if (item->deps != NULL && item->deps->len > 0) {
-               for (i = 0; i < item->deps->len; i ++) {
-                       dep = g_ptr_array_index (item->deps, i);
-
-                       if (dep->item == NULL) {
-                               /* Assume invalid deps as done */
-                               msg_debug_cache_task ("symbol %d(%s) has invalid dependencies on %d(%s)",
-                                               item->id, item->symbol, dep->id, dep->sym);
-                               continue;
-                       }
-
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, dep->item);
-
-                       if (!CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                               if (!CHECK_START_BIT (checkpoint, dyn_item)) {
-                                       /* Not started */
-                                       if (!check_only) {
-                                               if (!rspamd_symcache_check_deps (task, cache,
-                                                               dep->item,
-                                                               checkpoint,
-                                                               recursion + 1,
-                                                               check_only)) {
-
-                                                       ret = FALSE;
-                                                       msg_debug_cache_task ("delayed dependency %d(%s) for "
-                                                                                       "symbol %d(%s)",
-                                                                       dep->id, dep->sym, item->id, item->symbol);
-                                               }
-                                               else if (!rspamd_symcache_check_symbol (task, cache,
-                                                               dep->item,
-                                                               checkpoint)) {
-                                                       /* Now started, but has events pending */
-                                                       ret = FALSE;
-                                                       msg_debug_cache_task ("started check of %d(%s) symbol "
-                                                                                       "as dep for "
-                                                                                       "%d(%s)",
-                                                                       dep->id, dep->sym, item->id, item->symbol);
-                                               }
-                                               else {
-                                                       msg_debug_cache_task ("dependency %d(%s) for symbol %d(%s) is "
-                                                                       "already processed",
-                                                                       dep->id, dep->sym, item->id, item->symbol);
-                                               }
-                                       }
-                                       else {
-                                               msg_debug_cache_task ("dependency %d(%s) for symbol %d(%s) "
-                                                                               "cannot be started now",
-                                                               dep->id, dep->sym,
-                                                               item->id, item->symbol);
-                                               ret = FALSE;
-                                       }
-                               }
-                               else {
-                                       /* Started but not finished */
-                                       msg_debug_cache_task ("dependency %d(%s) for symbol %d(%s) is "
-                                                                       "still executing",
-                                                       dep->id, dep->sym,
-                                                       item->id, item->symbol);
-                                       ret = FALSE;
-                               }
-                       }
-                       else {
-                               msg_debug_cache_task ("dependency %d(%s) for symbol %d(%s) is already "
-                                               "checked",
-                                               dep->id, dep->sym,
-                                               item->id, item->symbol);
-                       }
-               }
-       }
-
-       return ret;
-}
-
-static struct cache_savepoint *
-rspamd_symcache_make_checkpoint (struct rspamd_task *task,
-               struct rspamd_symcache *cache)
-{
-       struct cache_savepoint *checkpoint;
-
-       if (cache->items_by_order->id != cache->id) {
-               /*
-                * Cache has been modified, need to resort it
-                */
-               msg_info_cache ("symbols cache has been modified since last check:"
-                               " old id: %ud, new id: %ud",
-                               cache->items_by_order->id, cache->id);
-               rspamd_symcache_resort (cache);
-       }
-
-       checkpoint = rspamd_mempool_alloc0 (task->task_pool,
-                       sizeof (*checkpoint) +
-                       sizeof (struct rspamd_symcache_dynamic_item) * cache->items_by_id->len);
-
-       g_assert (cache->items_by_order != NULL);
-       checkpoint->version = cache->items_by_order->d->len;
-       checkpoint->order = cache->items_by_order;
-       REF_RETAIN (checkpoint->order);
-       rspamd_mempool_add_destructor (task->task_pool,
-                       rspamd_symcache_order_unref, checkpoint->order);
-
-       /* Calculate profile probability */
-       ev_now_update_if_cheap (task->event_loop);
-       ev_tstamp now = ev_now (task->event_loop);
-       checkpoint->profile_start = now;
-
-       if ((cache->last_profile == 0.0 || now > cache->last_profile + PROFILE_MAX_TIME) ||
-                       (task->msg.len >= PROFILE_MESSAGE_SIZE_THRESHOLD) ||
-                       (rspamd_random_double_fast () >= (1 - PROFILE_PROBABILITY))) {
-               msg_debug_cache_task ("enable profiling of symbols for task");
-               checkpoint->profile = TRUE;
-               cache->last_profile = now;
-       }
-
-       task->checkpoint = checkpoint;
-
-       return checkpoint;
-}
-
-gboolean
-rspamd_symcache_process_settings (struct rspamd_task *task,
-                                                                 struct rspamd_symcache *cache)
-{
-       const ucl_object_t *wl, *cur, *disabled, *enabled;
-       struct rspamd_symbols_group *gr;
-       GHashTableIter gr_it;
-       ucl_object_iter_t it = NULL;
-       gboolean already_disabled = FALSE;
-       gpointer k, v;
-
-       wl = ucl_object_lookup (task->settings, "whitelist");
-
-       if (wl != NULL) {
-               msg_info_task ("task is whitelisted");
-               task->flags |= RSPAMD_TASK_FLAG_SKIP;
-               return TRUE;
-       }
-
-       enabled = ucl_object_lookup (task->settings, "symbols_enabled");
-
-       if (enabled) {
-               /* Disable all symbols but selected */
-               rspamd_symcache_disable_all_symbols (task, cache,
-                               SYMBOL_TYPE_EXPLICIT_DISABLE);
-               already_disabled = TRUE;
-               it = NULL;
-
-               while ((cur = ucl_iterate_object (enabled, &it, true)) != NULL) {
-                       rspamd_symcache_enable_symbol_checkpoint (task, cache,
-                                       ucl_object_tostring (cur));
-               }
-       }
-
-       /* Enable groups of symbols */
-       enabled = ucl_object_lookup (task->settings, "groups_enabled");
-
-       if (enabled) {
-               it = NULL;
-
-               if (!already_disabled) {
-                       rspamd_symcache_disable_all_symbols (task, cache,
-                                       SYMBOL_TYPE_EXPLICIT_DISABLE);
-               }
-
-               while ((cur = ucl_iterate_object (enabled, &it, true)) != NULL) {
-                       if (ucl_object_type (cur) == UCL_STRING) {
-                               gr = g_hash_table_lookup (task->cfg->groups,
-                                               ucl_object_tostring (cur));
-
-                               if (gr) {
-                                       g_hash_table_iter_init (&gr_it, gr->symbols);
-
-                                       while (g_hash_table_iter_next (&gr_it, &k, &v)) {
-                                               rspamd_symcache_enable_symbol_checkpoint (task, cache, k);
-                                       }
-                               }
-                       }
-               }
-       }
-
-       disabled = ucl_object_lookup (task->settings, "symbols_disabled");
-
-       if (disabled) {
-               it = NULL;
-
-               while ((cur = ucl_iterate_object (disabled, &it, true)) != NULL) {
-                       rspamd_symcache_disable_symbol_checkpoint (task, cache,
-                                       ucl_object_tostring (cur));
-               }
-       }
-
-       /* Disable groups of symbols */
-       disabled = ucl_object_lookup (task->settings, "groups_disabled");
-
-       if (disabled) {
-               it = NULL;
-
-               while ((cur = ucl_iterate_object (disabled, &it, true)) != NULL) {
-                       if (ucl_object_type (cur) == UCL_STRING) {
-                               gr = g_hash_table_lookup (task->cfg->groups,
-                                               ucl_object_tostring (cur));
-
-                               if (gr) {
-                                       g_hash_table_iter_init (&gr_it, gr->symbols);
-
-                                       while (g_hash_table_iter_next (&gr_it, &k, &v)) {
-                                               rspamd_symcache_disable_symbol_checkpoint (task, cache, k);
-                                       }
-                               }
-                       }
-               }
-       }
-
-       return FALSE;
-}
-
-gboolean
-rspamd_symcache_process_symbols (struct rspamd_task *task,
-                                                                struct rspamd_symcache *cache,
-                                                                gint stage)
-{
-       struct rspamd_symcache_item *item = NULL;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       struct cache_savepoint *checkpoint;
-       gint i;
-       gboolean all_done = TRUE;
-       gint saved_priority;
-       guint start_events_pending;
-
-       g_assert (cache != NULL);
-
-       if (task->checkpoint == NULL) {
-               checkpoint = rspamd_symcache_make_checkpoint (task, cache);
-               task->checkpoint = checkpoint;
-       }
-       else {
-               checkpoint = task->checkpoint;
-       }
-
-       msg_debug_cache_task ("symbols processing stage at pass: %d", stage);
-       start_events_pending = rspamd_session_events_pending (task->s);
-
-       switch (stage) {
-       case RSPAMD_TASK_STAGE_CONNFILTERS:
-               /* Check for connection filters */
-               saved_priority = G_MININT;
-               all_done = TRUE;
-
-               for (i = 0; i < (gint) cache->connfilters->len; i++) {
-                       item = g_ptr_array_index (cache->connfilters, i);
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (RSPAMD_TASK_IS_SKIPPED (task)) {
-                               return TRUE;
-                       }
-
-                       if (!CHECK_START_BIT (checkpoint, dyn_item) &&
-                               !CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-
-                               if (checkpoint->has_slow) {
-                                       /* Delay */
-                                       checkpoint->has_slow = FALSE;
-
-                                       return FALSE;
-                               }
-                               /* Check priorities */
-                               if (saved_priority == G_MININT) {
-                                       saved_priority = item->priority;
-                               }
-                               else {
-                                       if (item->priority < saved_priority &&
-                                               rspamd_session_events_pending (task->s) > start_events_pending) {
-                                               /*
-                                                * Delay further checks as we have higher
-                                                * priority filters to be processed
-                                                */
-                                               return FALSE;
-                                       }
-                               }
-
-                               rspamd_symcache_check_symbol (task, cache, item,
-                                               checkpoint);
-                               all_done = FALSE;
-                       }
-               }
-               break;
-
-       case RSPAMD_TASK_STAGE_PRE_FILTERS:
-               /* Check for prefilters */
-               saved_priority = G_MININT;
-               all_done = TRUE;
-
-               for (i = 0; i < (gint) cache->prefilters->len; i++) {
-                       item = g_ptr_array_index (cache->prefilters, i);
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (RSPAMD_TASK_IS_SKIPPED (task)) {
-                               return TRUE;
-                       }
-
-                       if (!CHECK_START_BIT (checkpoint, dyn_item) &&
-                               !CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                               /* Check priorities */
-                               if (checkpoint->has_slow) {
-                                       /* Delay */
-                                       checkpoint->has_slow = FALSE;
-
-                                       return FALSE;
-                               }
-
-                               if (saved_priority == G_MININT) {
-                                       saved_priority = item->priority;
-                               }
-                               else {
-                                       if (item->priority < saved_priority &&
-                                               rspamd_session_events_pending (task->s) > start_events_pending) {
-                                               /*
-                                                * Delay further checks as we have higher
-                                                * priority filters to be processed
-                                                */
-                                               return FALSE;
-                                       }
-                               }
-
-                               rspamd_symcache_check_symbol (task, cache, item,
-                                               checkpoint);
-                               all_done = FALSE;
-                       }
-               }
-
-               break;
-
-       case RSPAMD_TASK_STAGE_FILTERS:
-               all_done = TRUE;
-
-               for (i = 0; i < (gint) checkpoint->version; i++) {
-                       if (RSPAMD_TASK_IS_SKIPPED (task)) {
-                               return TRUE;
-                       }
-
-                       item = g_ptr_array_index (checkpoint->order->d, i);
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (item->type & SYMBOL_TYPE_CLASSIFIER) {
-                               continue;
-                       }
-
-                       if (!CHECK_START_BIT (checkpoint, dyn_item)) {
-                               all_done = FALSE;
-
-                               if (!rspamd_symcache_check_deps (task, cache, item,
-                                               checkpoint, 0, FALSE)) {
-
-                                       msg_debug_cache_task ("blocked execution of %d(%s) unless deps are "
-                                                                                 "resolved",
-                                                       item->id, item->symbol);
-
-                                       continue;
-                               }
-
-                               rspamd_symcache_check_symbol (task, cache, item,
-                                               checkpoint);
-
-                               if (checkpoint->has_slow) {
-                                       /* Delay */
-                                       checkpoint->has_slow = FALSE;
-
-                                       return FALSE;
-                               }
-                       }
-
-                       if (!(item->type & SYMBOL_TYPE_FINE)) {
-                               if (rspamd_symcache_metric_limit (task, checkpoint)) {
-                                       msg_info_task ("task has already scored more than %.2f, so do "
-                                                                  "not "
-                                                                  "plan more checks",
-                                                       checkpoint->rs->score);
-                                       all_done = TRUE;
-                                       break;
-                               }
-                       }
-               }
-
-               break;
-
-       case RSPAMD_TASK_STAGE_POST_FILTERS:
-               /* Check for postfilters */
-               saved_priority = G_MININT;
-               all_done = TRUE;
-
-               for (i = 0; i < (gint) cache->postfilters->len; i++) {
-                       if (RSPAMD_TASK_IS_SKIPPED (task)) {
-                               return TRUE;
-                       }
-
-                       item = g_ptr_array_index (cache->postfilters, i);
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (!CHECK_START_BIT (checkpoint, dyn_item) &&
-                               !CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                               /* Check priorities */
-                               all_done = FALSE;
-
-                               if (checkpoint->has_slow) {
-                                       /* Delay */
-                                       checkpoint->has_slow = FALSE;
-
-                                       return FALSE;
-                               }
-
-                               if (saved_priority == G_MININT) {
-                                       saved_priority = item->priority;
-                               }
-                               else {
-                                       if (item->priority > saved_priority &&
-                                               rspamd_session_events_pending (task->s) > start_events_pending) {
-                                               /*
-                                                * Delay further checks as we have higher
-                                                * priority filters to be processed
-                                                */
-
-                                               return FALSE;
-                                       }
-                               }
-
-                               rspamd_symcache_check_symbol (task, cache, item,
-                                               checkpoint);
-                       }
-               }
-
-               break;
-
-       case RSPAMD_TASK_STAGE_IDEMPOTENT:
-               /* Check for postfilters */
-               saved_priority = G_MININT;
-
-               for (i = 0; i < (gint) cache->idempotent->len; i++) {
-                       item = g_ptr_array_index (cache->idempotent, i);
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (!CHECK_START_BIT (checkpoint, dyn_item) &&
-                               !CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                               /* Check priorities */
-                               if (checkpoint->has_slow) {
-                                       /* Delay */
-                                       checkpoint->has_slow = FALSE;
-
-                                       return FALSE;
-                               }
-
-                               if (saved_priority == G_MININT) {
-                                       saved_priority = item->priority;
-                               }
-                               else {
-                                       if (item->priority > saved_priority &&
-                                               rspamd_session_events_pending (task->s) > start_events_pending) {
-                                               /*
-                                                * Delay further checks as we have higher
-                                                * priority filters to be processed
-                                                */
-                                               return FALSE;
-                                       }
-                               }
-                               rspamd_symcache_check_symbol (task, cache, item,
-                                               checkpoint);
-                       }
-               }
-               break;
-       default:
-               g_assert_not_reached ();
-       }
-
-       return all_done;
-}
-
-struct counters_cbdata {
-       ucl_object_t *top;
-       struct rspamd_symcache *cache;
-};
-
-/* Leave several digits */
-#define P10(X) (1e##X)
-#define ROUND_DOUBLE_DIGITS(x, dig) (floor((x) * P10(dig)) / P10(dig))
-#define ROUND_DOUBLE(x) ROUND_DOUBLE_DIGITS(x, 3)
-
-static void
-rspamd_symcache_counters_cb (gpointer k, gpointer v, gpointer ud)
-{
-       struct counters_cbdata *cbd = ud;
-       ucl_object_t *obj, *top;
-       struct rspamd_symcache_item *item = v, *parent;
-       const gchar *symbol = k;
-
-       top = cbd->top;
-
-       obj = ucl_object_typed_new (UCL_OBJECT);
-       ucl_object_insert_key (obj, ucl_object_fromstring (symbol ? symbol : "unknown"),
-                       "symbol", 0, false);
-
-       if (item->is_virtual) {
-               if (!(item->type & SYMBOL_TYPE_GHOST)) {
-                       parent = g_ptr_array_index (cbd->cache->items_by_id,
-                                       item->specific.virtual.parent);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (ROUND_DOUBLE (item->st->weight)),
-                                       "weight", 0, false);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (ROUND_DOUBLE (parent->st->avg_frequency)),
-                                       "frequency", 0, false);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromint (parent->st->total_hits),
-                                       "hits", 0, false);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (ROUND_DOUBLE (parent->st->avg_time)),
-                                       "time", 0, false);
-               }
-               else {
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (ROUND_DOUBLE (item->st->weight)),
-                                       "weight", 0, false);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (0.0),
-                                       "frequency", 0, false);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (0.0),
-                                       "hits", 0, false);
-                       ucl_object_insert_key (obj,
-                                       ucl_object_fromdouble (0.0),
-                                       "time", 0, false);
-               }
-       }
-       else {
-               ucl_object_insert_key (obj,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->weight)),
-                               "weight", 0, false);
-               ucl_object_insert_key (obj,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->avg_frequency)),
-                               "frequency", 0, false);
-               ucl_object_insert_key (obj,
-                               ucl_object_fromint (item->st->total_hits),
-                               "hits", 0, false);
-               ucl_object_insert_key (obj,
-                               ucl_object_fromdouble (ROUND_DOUBLE (item->st->avg_time)),
-                               "time", 0, false);
-       }
-
-       ucl_array_append (top, obj);
-}
-
-#undef ROUND_DOUBLE
-
-ucl_object_t *
-rspamd_symcache_counters (struct rspamd_symcache *cache)
-{
-       ucl_object_t *top;
-       struct counters_cbdata cbd;
-
-       g_assert (cache != NULL);
-       top = ucl_object_typed_new (UCL_ARRAY);
-       cbd.top = top;
-       cbd.cache = cache;
-       g_hash_table_foreach (cache->items_by_symbol,
-                       rspamd_symcache_counters_cb, &cbd);
-
-       return top;
-}
-
-static void
-rspamd_symcache_call_peak_cb (struct ev_loop *ev_base,
-               struct rspamd_symcache *cache,
-               struct rspamd_symcache_item *item,
-               gdouble cur_value,
-               gdouble cur_err)
-{
-       lua_State *L = cache->cfg->lua_state;
-       struct ev_loop **pbase;
-
-       lua_rawgeti (L, LUA_REGISTRYINDEX, cache->peak_cb);
-       pbase = lua_newuserdata (L, sizeof (*pbase));
-       *pbase = ev_base;
-       rspamd_lua_setclass (L, "rspamd{ev_base}", -1);
-       lua_pushstring (L, item->symbol);
-       lua_pushnumber (L, item->st->avg_frequency);
-       lua_pushnumber (L, sqrt (item->st->stddev_frequency));
-       lua_pushnumber (L, cur_value);
-       lua_pushnumber (L, cur_err);
-
-       if (lua_pcall (L, 6, 0, 0) != 0) {
-               msg_info_cache ("call to peak function for %s failed: %s",
-                               item->symbol, lua_tostring (L, -1));
-               lua_pop (L, 1);
-       }
-}
-
-static void
-rspamd_symcache_resort_cb (EV_P_ ev_timer *w, int revents)
-{
-       gdouble tm;
-       struct rspamd_cache_refresh_cbdata *cbdata =
-                       (struct rspamd_cache_refresh_cbdata *)w->data;
-       struct rspamd_symcache *cache;
-       struct rspamd_symcache_item *item;
-       guint i;
-       gdouble cur_ticks;
-       static const double decay_rate = 0.25;
-
-       cache = cbdata->cache;
-       /* Plan new event */
-       tm = rspamd_time_jitter (cache->reload_time, 0);
-       cur_ticks = rspamd_get_ticks (FALSE);
-       msg_debug_cache ("resort symbols cache, next reload in %.2f seconds", tm);
-       g_assert (cache != NULL);
-       cbdata->resort_ev.repeat = tm;
-       ev_timer_again (EV_A_ w);
-
-       if (rspamd_worker_is_primary_controller (cbdata->w)) {
-               /* Gather stats from shared execution times */
-               for (i = 0; i < cache->filters->len; i ++) {
-                       item = g_ptr_array_index (cache->filters, i);
-                       item->st->total_hits += item->st->hits;
-                       g_atomic_int_set (&item->st->hits, 0);
-
-                       if (item->last_count > 0 && cbdata->w->index == 0) {
-                               /* Calculate frequency */
-                               gdouble cur_err, cur_value;
-
-                               cur_value = (item->st->total_hits - item->last_count) /
-                                                       (cur_ticks - cbdata->last_resort);
-                               rspamd_set_counter_ema (&item->st->frequency_counter,
-                                               cur_value, decay_rate);
-                               item->st->avg_frequency = item->st->frequency_counter.mean;
-                               item->st->stddev_frequency = item->st->frequency_counter.stddev;
-
-                               if (cur_value > 0) {
-                                       msg_debug_cache ("frequency for %s is %.2f, avg: %.2f",
-                                                       item->symbol, cur_value, item->st->avg_frequency);
-                               }
-
-                               cur_err = (item->st->avg_frequency - cur_value);
-                               cur_err *= cur_err;
-
-                               /*
-                                * TODO: replace magic number
-                                */
-                               if (item->st->frequency_counter.number > 10 &&
-                                       cur_err > sqrt (item->st->stddev_frequency) * 3) {
-                                       item->frequency_peaks ++;
-                                       msg_debug_cache ("peak found for %s is %.2f, avg: %.2f, "
-                                                                        "stddev: %.2f, error: %.2f, peaks: %d",
-                                                       item->symbol, cur_value,
-                                                       item->st->avg_frequency,
-                                                       item->st->stddev_frequency,
-                                                       cur_err,
-                                                       item->frequency_peaks);
-
-                                       if (cache->peak_cb != -1) {
-                                               rspamd_symcache_call_peak_cb (cbdata->event_loop,
-                                                               cache, item,
-                                                               cur_value, cur_err);
-                                       }
-                               }
-                       }
-
-                       item->last_count = item->st->total_hits;
-
-                       if (item->cd->number > 0) {
-                               if (item->type & (SYMBOL_TYPE_CALLBACK|SYMBOL_TYPE_NORMAL)) {
-                                       item->st->avg_time = item->cd->mean;
-                                       rspamd_set_counter_ema (&item->st->time_counter,
-                                                       item->st->avg_time, decay_rate);
-                                       item->st->avg_time = item->st->time_counter.mean;
-                                       memset (item->cd, 0, sizeof (*item->cd));
-                               }
-                       }
-               }
-
-               cbdata->last_resort = cur_ticks;
-               /* We don't do actual sorting due to topological guarantees */
-       }
-}
-
-static void
-rspamd_symcache_refresh_dtor (void *d)
-{
-       struct rspamd_cache_refresh_cbdata *cbdata =
-                       (struct rspamd_cache_refresh_cbdata *)d;
-
-       ev_timer_stop (cbdata->event_loop, &cbdata->resort_ev);
-}
-
-void
-rspamd_symcache_start_refresh (struct rspamd_symcache *cache,
-                                                          struct ev_loop *ev_base, struct rspamd_worker *w)
-{
-       gdouble tm;
-       struct rspamd_cache_refresh_cbdata *cbdata;
-
-       cbdata = rspamd_mempool_alloc0 (cache->static_pool, sizeof (*cbdata));
-       cbdata->last_resort = rspamd_get_ticks (TRUE);
-       cbdata->event_loop = ev_base;
-       cbdata->w = w;
-       cbdata->cache = cache;
-       tm = rspamd_time_jitter (cache->reload_time, 0);
-       msg_debug_cache ("next reload in %.2f seconds", tm);
-       g_assert (cache != NULL);
-       cbdata->resort_ev.data = cbdata;
-       ev_timer_init (&cbdata->resort_ev, rspamd_symcache_resort_cb,
-                       tm, tm);
-       ev_timer_start (cbdata->event_loop, &cbdata->resort_ev);
-       rspamd_mempool_add_destructor (cache->static_pool,
-                       rspamd_symcache_refresh_dtor, cbdata);
-}
-
-void
-rspamd_symcache_inc_frequency (struct rspamd_symcache *cache,
-                                                          struct rspamd_symcache_item *item)
-{
-       if (item != NULL) {
-               g_atomic_int_inc (&item->st->hits);
-       }
-}
-
-void
-rspamd_symcache_add_dependency (struct rspamd_symcache *cache,
-                                                               gint id_from, const gchar *to,
-                                                               gint virtual_id_from)
-{
-       struct rspamd_symcache_item *source, *vsource;
-       struct cache_dependency *dep;
-
-       g_assert (id_from >= 0 && id_from < (gint)cache->items_by_id->len);
-
-       source = (struct rspamd_symcache_item *)g_ptr_array_index (cache->items_by_id, id_from);
-       dep = rspamd_mempool_alloc (cache->static_pool, sizeof (*dep));
-       dep->id = id_from;
-       dep->sym = rspamd_mempool_strdup (cache->static_pool, to);
-       /* Will be filled later */
-       dep->item = NULL;
-       dep->vid = -1;
-       g_ptr_array_add (source->deps, dep);
-
-       if (virtual_id_from >= 0) {
-               g_assert (virtual_id_from < (gint)cache->virtual->len);
-               /* We need that for settings id propagation */
-               vsource = (struct rspamd_symcache_item *)
-                               g_ptr_array_index (cache->virtual, virtual_id_from);
-               dep = rspamd_mempool_alloc (cache->static_pool, sizeof (*dep));
-               dep->vid = virtual_id_from;
-               dep->id = -1;
-               dep->sym = rspamd_mempool_strdup (cache->static_pool, to);
-               /* Will be filled later */
-               dep->item = NULL;
-               g_ptr_array_add (vsource->deps, dep);
-       }
-}
-
-void
-rspamd_symcache_add_delayed_dependency (struct rspamd_symcache *cache,
-                                                                               const gchar *from, const gchar *to)
-{
-       struct delayed_cache_dependency *ddep;
-
-       g_assert (from != NULL);
-       g_assert (to != NULL);
-
-       ddep = g_malloc0 (sizeof (*ddep));
-       ddep->from = g_strdup (from);
-       ddep->to = g_strdup (to);
-
-       cache->delayed_deps = g_list_prepend (cache->delayed_deps, ddep);
-}
-
-gint
-rspamd_symcache_find_symbol (struct rspamd_symcache *cache, const gchar *name)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-
-       if (name == NULL) {
-               return -1;
-       }
-
-       item = g_hash_table_lookup (cache->items_by_symbol, name);
-
-       if (item != NULL) {
-               return item->id;
-       }
-
-       return -1;
-}
-
-gboolean
-rspamd_symcache_stat_symbol (struct rspamd_symcache *cache,
-                                                        const gchar *name,
-                                                        gdouble *frequency,
-                                                        gdouble *freq_stddev,
-                                                        gdouble *tm,
-                                                        guint *nhits)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-
-       if (name == NULL) {
-               return FALSE;
-       }
-
-       item = g_hash_table_lookup (cache->items_by_symbol, name);
-
-       if (item != NULL) {
-               *frequency = item->st->avg_frequency;
-               *freq_stddev = sqrt (item->st->stddev_frequency);
-               *tm = item->st->time_counter.mean;
-
-               if (nhits) {
-                       *nhits = item->st->hits;
-               }
-
-               return TRUE;
-       }
-
-       return FALSE;
-}
-
-const gchar *
-rspamd_symcache_symbol_by_id (struct rspamd_symcache *cache,
-                                                         gint id)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-
-       if (id < 0 || id >= (gint)cache->items_by_id->len) {
-               return NULL;
-       }
-
-       item = g_ptr_array_index (cache->items_by_id, id);
-
-       return item->symbol;
-}
-
-guint
-rspamd_symcache_stats_symbols_count (struct rspamd_symcache *cache)
-{
-       g_assert (cache != NULL);
-
-       return cache->stats_symbols_count;
-}
-
-
-void
-rspamd_symcache_disable_all_symbols (struct rspamd_task *task,
-                                                                        struct rspamd_symcache *cache,
-                                                                        guint skip_mask)
-{
-       struct cache_savepoint *checkpoint;
-       guint i;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-
-       if (task->checkpoint == NULL) {
-               checkpoint = rspamd_symcache_make_checkpoint (task, cache);
-               task->checkpoint = checkpoint;
-       }
-       else {
-               checkpoint = task->checkpoint;
-       }
-
-       /* Enable for squeezed symbols */
-       PTR_ARRAY_FOREACH (cache->items_by_id, i, item) {
-               dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-               if (!(item->type & (skip_mask))) {
-                       SET_FINISH_BIT (checkpoint, dyn_item);
-                       SET_START_BIT (checkpoint, dyn_item);
-               }
-       }
-}
-
-static void
-rspamd_symcache_disable_symbol_checkpoint (struct rspamd_task *task,
-               struct rspamd_symcache *cache, const gchar *symbol)
-{
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-
-       if (task->checkpoint == NULL) {
-               checkpoint = rspamd_symcache_make_checkpoint (task, cache);
-               task->checkpoint = checkpoint;
-       }
-       else {
-               checkpoint = task->checkpoint;
-       }
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-               SET_FINISH_BIT (checkpoint, dyn_item);
-               SET_START_BIT (checkpoint, dyn_item);
-               msg_debug_cache_task ("disable execution of %s", symbol);
-       }
-       else {
-               msg_info_task ("cannot disable %s: not found", symbol);
-       }
-}
-
-static void
-rspamd_symcache_enable_symbol_checkpoint (struct rspamd_task *task,
-               struct rspamd_symcache *cache, const gchar *symbol)
-{
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-
-       if (task->checkpoint == NULL) {
-               checkpoint = rspamd_symcache_make_checkpoint (task, cache);
-               task->checkpoint = checkpoint;
-       }
-       else {
-               checkpoint = task->checkpoint;
-       }
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-               dyn_item->finished = 0;
-               dyn_item->started = 0;
-               msg_debug_cache_task ("enable execution of %s", symbol);
-       }
-       else {
-               msg_info_task ("cannot enable %s: not found", symbol);
-       }
-}
-
-struct rspamd_abstract_callback_data*
-rspamd_symcache_get_cbdata (struct rspamd_symcache *cache,
-                                                       const gchar *symbol)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               return item->specific.normal.user_data;
-       }
-
-       return NULL;
-}
-
-gboolean
-rspamd_symcache_is_checked (struct rspamd_task *task,
-                                                       struct rspamd_symcache *cache, const gchar *symbol)
-{
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       if (task->checkpoint == NULL) {
-               checkpoint = rspamd_symcache_make_checkpoint (task, cache);
-               task->checkpoint = checkpoint;
-       }
-       else {
-               checkpoint = task->checkpoint;
-       }
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-               return dyn_item->started;
-       }
-
-       return FALSE;
-}
-
-void
-rspamd_symcache_disable_symbol_perm (struct rspamd_symcache *cache,
-                                                                        const gchar *symbol,
-                                                                        gboolean resolve_parent)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, resolve_parent);
-
-       if (item) {
-               item->enabled = FALSE;
-       }
-}
-
-void
-rspamd_symcache_enable_symbol_perm (struct rspamd_symcache *cache,
-                                                                       const gchar *symbol)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               item->enabled = TRUE;
-       }
-}
-
-guint64
-rspamd_symcache_get_cksum (struct rspamd_symcache *cache)
-{
-       g_assert (cache != NULL);
-
-       return cache->cksum;
-}
-
-
-gboolean
-rspamd_symcache_is_symbol_enabled (struct rspamd_task *task,
-                                                                  struct rspamd_symcache *cache,
-                                                                  const gchar *symbol)
-{
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       lua_State *L;
-       struct rspamd_task **ptask;
-       gboolean ret = TRUE;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       checkpoint = task->checkpoint;
-
-
-       if (checkpoint) {
-               item = rspamd_symcache_find_filter (cache, symbol, true);
-
-               if (item) {
-
-                       if (!rspamd_symcache_is_item_allowed (task, item, TRUE)) {
-                               ret = FALSE;
-                       }
-                       else {
-                               dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-                               if (CHECK_START_BIT (checkpoint, dyn_item)) {
-                                       ret = FALSE;
-                               }
-                               else {
-                                       if (item->specific.normal.conditions) {
-                                               struct rspamd_symcache_condition *cur_cond;
-
-                                               DL_FOREACH (item->specific.normal.conditions, cur_cond) {
-                                                       /*
-                                                        * We also executes condition callback to check
-                                                        * if we need this symbol
-                                                        */
-                                                       L = task->cfg->lua_state;
-                                                       lua_rawgeti (L, LUA_REGISTRYINDEX, cur_cond->cb);
-                                                       ptask = lua_newuserdata (L, sizeof (struct rspamd_task *));
-                                                       rspamd_lua_setclass (L, "rspamd{task}", -1);
-                                                       *ptask = task;
-
-                                                       if (lua_pcall (L, 1, 1, 0) != 0) {
-                                                               msg_info_task ("call to condition for %s failed: %s",
-                                                                               item->symbol, lua_tostring (L, -1));
-                                                               lua_pop (L, 1);
-                                                       }
-                                                       else {
-                                                               ret = lua_toboolean (L, -1);
-                                                               lua_pop (L, 1);
-                                                       }
-
-                                                       if (!ret) {
-                                                               break;
-                                                       }
-                                               }
-                                       }
-                               }
-                       }
-               }
-       }
-
-       return ret;
-}
-
-
-gboolean
-rspamd_symcache_enable_symbol (struct rspamd_task *task,
-                                                          struct rspamd_symcache *cache,
-                                                          const gchar *symbol)
-{
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       gboolean ret = FALSE;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       checkpoint = task->checkpoint;
-
-       if (checkpoint) {
-               item = rspamd_symcache_find_filter (cache, symbol, true);
-
-               if (item) {
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (!CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                               ret = TRUE;
-                               CLR_START_BIT (checkpoint, dyn_item);
-                               CLR_FINISH_BIT (checkpoint, dyn_item);
-                       }
-                       else {
-                               msg_debug_task ("cannot enable symbol %s: already started", symbol);
-                       }
-               }
-       }
-
-       return ret;
-}
-
-
-gboolean
-rspamd_symcache_disable_symbol (struct rspamd_task *task,
-                                                               struct rspamd_symcache *cache,
-                                                               const gchar *symbol)
-{
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       gboolean ret = FALSE;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       checkpoint = task->checkpoint;
-
-       if (checkpoint) {
-               item = rspamd_symcache_find_filter (cache, symbol, true);
-
-               if (item) {
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-                       if (!CHECK_START_BIT (checkpoint, dyn_item)) {
-                               ret = TRUE;
-                               SET_START_BIT (checkpoint, dyn_item);
-                               SET_FINISH_BIT (checkpoint, dyn_item);
-                       }
-                       else {
-                               if (!CHECK_FINISH_BIT (checkpoint, dyn_item)) {
-                                       msg_warn_task ("cannot disable symbol %s: already started",
-                                                       symbol);
-                               }
-                       }
-               }
-       }
-
-       return ret;
-}
-
-void
-rspamd_symcache_foreach (struct rspamd_symcache *cache,
-                                                void (*func) (struct rspamd_symcache_item *, gpointer),
-                                                gpointer ud)
-{
-       struct rspamd_symcache_item *item;
-       GHashTableIter it;
-       gpointer k, v;
-
-       g_hash_table_iter_init (&it, cache->items_by_symbol);
-
-       while (g_hash_table_iter_next (&it, &k, &v)) {
-               item = (struct rspamd_symcache_item *)v;
-               func (item, ud);
-       }
-}
-
-struct rspamd_symcache_item *
-rspamd_symcache_get_cur_item (struct rspamd_task *task)
-{
-       struct cache_savepoint *checkpoint = task->checkpoint;
-
-       if (checkpoint == NULL) {
-               return NULL;
-       }
-
-       return checkpoint->cur_item;
-}
-
-/**
- * Replaces the current item being processed.
- * Returns the current item being processed (if any)
- * @param task
- * @param item
- * @return
- */
-struct rspamd_symcache_item *
-rspamd_symcache_set_cur_item (struct rspamd_task *task,
-                                                         struct rspamd_symcache_item *item)
-{
-       struct cache_savepoint *checkpoint = task->checkpoint;
-       struct rspamd_symcache_item *ex;
-
-       ex = checkpoint->cur_item;
-       checkpoint->cur_item = item;
-
-       return ex;
-}
-
-struct rspamd_symcache_delayed_cbdata {
-       struct rspamd_symcache_item *item;
-       struct rspamd_task *task;
-       struct rspamd_async_event *event;
-       struct ev_timer tm;
-};
-
-static void
-rspamd_symcache_delayed_item_fin (gpointer ud)
-{
-       struct rspamd_symcache_delayed_cbdata *cbd =
-                       (struct rspamd_symcache_delayed_cbdata *)ud;
-       struct rspamd_task *task;
-       struct cache_savepoint *checkpoint;
-
-       task = cbd->task;
-       checkpoint = task->checkpoint;
-       checkpoint->has_slow = FALSE;
-       ev_timer_stop (task->event_loop, &cbd->tm);
-}
-
-static void
-rspamd_symcache_delayed_item_cb (EV_P_ ev_timer *w, int what)
-{
-       struct rspamd_symcache_delayed_cbdata *cbd =
-                       (struct rspamd_symcache_delayed_cbdata *)w->data;
-       struct rspamd_symcache_item *item;
-       struct rspamd_task *task;
-       struct cache_dependency *rdep;
-       struct cache_savepoint *checkpoint;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       guint i;
-
-       item = cbd->item;
-       task = cbd->task;
-       checkpoint = task->checkpoint;
-       cbd->event = NULL;
-
-       /* Timer will be stopped here */
-       rspamd_session_remove_event (task->s,
-                       rspamd_symcache_delayed_item_fin, cbd);
-
-       /* Process all reverse dependencies */
-       PTR_ARRAY_FOREACH (item->rdeps, i, rdep) {
-               if (rdep->item) {
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, rdep->item);
-                       if (!CHECK_START_BIT (checkpoint, dyn_item)) {
-                               msg_debug_cache_task ("check item %d(%s) rdep of %s ",
-                                               rdep->item->id, rdep->item->symbol, item->symbol);
-
-                               if (!rspamd_symcache_check_deps (task, task->cfg->cache,
-                                               rdep->item,
-                                               checkpoint, 0, FALSE)) {
-                                       msg_debug_cache_task ("blocked execution of %d(%s) rdep of %s "
-                                                                                 "unless deps are resolved",
-                                                       rdep->item->id, rdep->item->symbol, item->symbol);
-                               }
-                               else {
-                                       rspamd_symcache_check_symbol (task, task->cfg->cache,
-                                                       rdep->item,
-                                                       checkpoint);
-                               }
-                       }
-               }
-       }
-}
-
-static void
-rspamd_delayed_timer_dtor (gpointer d)
-{
-       struct rspamd_symcache_delayed_cbdata *cbd =
-                       (struct rspamd_symcache_delayed_cbdata *)d;
-
-       if (cbd->event) {
-               /* Event has not been executed */
-               rspamd_session_remove_event (cbd->task->s,
-                               rspamd_symcache_delayed_item_fin, cbd);
-               cbd->event = NULL;
-       }
-}
-
-/**
- * Finalize the current async element potentially calling its deps
- */
-void
-rspamd_symcache_finalize_item (struct rspamd_task *task,
-                                                          struct rspamd_symcache_item *item)
-{
-       struct cache_savepoint *checkpoint = task->checkpoint;
-       struct cache_dependency *rdep;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       gdouble diff;
-       guint i;
-       gboolean enable_slow_timer = FALSE;
-       const gdouble slow_diff_limit = 300;
-
-       /* Sanity checks */
-       g_assert (checkpoint->items_inflight > 0);
-       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-
-       if (dyn_item->async_events > 0) {
-               /*
-                * XXX: Race condition
-                *
-                * It is possible that some async event is still in flight, but we
-                * already know its result, however, it is the responsibility of that
-                * event to decrease async events count and call this function
-                * one more time
-                */
-               msg_debug_cache_task ("postpone finalisation of %s(%d) as there are %d "
-                                                         "async events pending",
-                                                         item->symbol, item->id, dyn_item->async_events);
-
-               return;
-       }
-
-       msg_debug_cache_task ("process finalize for item %s(%d)", item->symbol, item->id);
-       SET_FINISH_BIT (checkpoint, dyn_item);
-       checkpoint->items_inflight --;
-       checkpoint->cur_item = NULL;
-
-       if (checkpoint->profile) {
-               ev_now_update_if_cheap (task->event_loop);
-               diff = ((ev_now (task->event_loop) - checkpoint->profile_start) * 1e3 -
-                               dyn_item->start_msec);
-
-               if (diff > slow_diff_limit) {
-
-                       if (!checkpoint->has_slow) {
-                               checkpoint->has_slow = TRUE;
-                               enable_slow_timer = TRUE;
-                               msg_info_task ("slow rule: %s(%d): %.2f ms; enable slow timer delay",
-                                               item->symbol, item->id,
-                                               diff);
-                       }
-                       else {
-                               msg_info_task ("slow rule: %s(%d): %.2f ms",
-                                               item->symbol, item->id,
-                                               diff);
-                       }
-               }
-
-               if (G_UNLIKELY (RSPAMD_TASK_IS_PROFILING (task))) {
-                       rspamd_task_profile_set (task, item->symbol, diff);
-               }
-
-               if (rspamd_worker_is_scanner (task->worker)) {
-                       rspamd_set_counter (item->cd, diff);
-               }
-       }
-
-       if (enable_slow_timer) {
-               struct rspamd_symcache_delayed_cbdata *cbd =
-                               rspamd_mempool_alloc (task->task_pool,sizeof (*cbd));
-               /* Add timer to allow something else to be executed */
-               ev_timer *tm = &cbd->tm;
-
-               cbd->event = rspamd_session_add_event (task->s,
-                               rspamd_symcache_delayed_item_fin, cbd,
-                               "symcache");
-
-               /*
-                * If no event could be added, then we are already in the destruction
-                * phase. So the main issue is to deal with has slow here
-                */
-               if (cbd->event) {
-                       ev_timer_init (tm, rspamd_symcache_delayed_item_cb, 0.1, 0.0);
-                       ev_set_priority (tm, EV_MINPRI);
-                       rspamd_mempool_add_destructor (task->task_pool,
-                                       rspamd_delayed_timer_dtor, cbd);
-
-                       cbd->task = task;
-                       cbd->item = item;
-                       tm->data = cbd;
-                       ev_timer_start (task->event_loop, tm);
-               }
-               else {
-                       /* Just reset as no timer is added */
-                       checkpoint->has_slow = FALSE;
-               }
-
-               return;
-       }
-
-       /* Process all reverse dependencies */
-       PTR_ARRAY_FOREACH (item->rdeps, i, rdep) {
-               if (rdep->item) {
-                       dyn_item = rspamd_symcache_get_dynamic (checkpoint, rdep->item);
-                       if (!CHECK_START_BIT (checkpoint, dyn_item)) {
-                               msg_debug_cache_task ("check item %d(%s) rdep of %s ",
-                                               rdep->item->id, rdep->item->symbol, item->symbol);
-
-                               if (!rspamd_symcache_check_deps (task, task->cfg->cache,
-                                               rdep->item,
-                                               checkpoint, 0, FALSE)) {
-                                       msg_debug_cache_task ("blocked execution of %d(%s) rdep of %s "
-                                                  "unless deps are resolved",
-                                                       rdep->item->id, rdep->item->symbol, item->symbol);
-                               }
-                               else {
-                                       rspamd_symcache_check_symbol (task, task->cfg->cache,
-                                                       rdep->item,
-                                                       checkpoint);
-                               }
-                       }
-               }
-       }
-}
-
-guint
-rspamd_symcache_item_async_inc_full (struct rspamd_task *task,
-                                                               struct rspamd_symcache_item *item,
-                                                               const gchar *subsystem,
-                                                               const gchar *loc)
-{
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       struct cache_savepoint *checkpoint = task->checkpoint;
-
-       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-       msg_debug_cache_task ("increase async events counter for %s(%d) = %d + 1; "
-                                          "subsystem %s (%s)",
-                       item->symbol, item->id, dyn_item->async_events, subsystem, loc);
-       return ++dyn_item->async_events;
-}
-
-guint
-rspamd_symcache_item_async_dec_full (struct rspamd_task *task,
-                                                               struct rspamd_symcache_item *item,
-                                                               const gchar *subsystem,
-                                                               const gchar *loc)
-{
-       struct rspamd_symcache_dynamic_item *dyn_item;
-       struct cache_savepoint *checkpoint = task->checkpoint;
-
-       dyn_item = rspamd_symcache_get_dynamic (checkpoint, item);
-       msg_debug_cache_task ("decrease async events counter for %s(%d) = %d - 1; "
-                                          "subsystem %s (%s)",
-                       item->symbol, item->id, dyn_item->async_events, subsystem, loc);
-       g_assert (dyn_item->async_events > 0);
-
-       return --dyn_item->async_events;
-}
-
-gboolean
-rspamd_symcache_item_async_dec_check_full (struct rspamd_task *task,
-                                                                         struct rspamd_symcache_item *item,
-                                                                         const gchar *subsystem,
-                                                                         const gchar *loc)
-{
-       if (rspamd_symcache_item_async_dec_full (task, item, subsystem, loc) == 0) {
-               rspamd_symcache_finalize_item (task, item);
-
-               return TRUE;
-       }
-
-       return FALSE;
-}
-
-gboolean
-rspamd_symcache_add_symbol_flags (struct rspamd_symcache *cache,
-                                                                                  const gchar *symbol,
-                                                                                  guint flags)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               item->type |= flags;
-
-               return TRUE;
-       }
-
-       return FALSE;
-}
-
-gboolean
-rspamd_symcache_set_symbol_flags (struct rspamd_symcache *cache,
-                                                                                  const gchar *symbol,
-                                                                                  guint flags)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               item->type = flags;
-
-               return TRUE;
-       }
-
-       return FALSE;
-}
-
-void
-rspamd_symcache_get_symbol_details(struct rspamd_symcache *cache,
-                                                                                  const gchar *symbol,
-                                                                                  ucl_object_t *this_sym_ucl)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, false);
-
-       if (item) {
-               ucl_object_insert_key (this_sym_ucl,
-                       ucl_object_fromstring(item->type_descr),
-                       "type", strlen("type"), false);
-
-               // any other data?
-       }
-}
-
-guint
-rspamd_symcache_get_symbol_flags (struct rspamd_symcache *cache,
-                                                                               const gchar *symbol)
-{
-       struct rspamd_symcache_item *item;
-
-       g_assert (cache != NULL);
-       g_assert (symbol != NULL);
-
-       item = rspamd_symcache_find_filter (cache, symbol, true);
-
-       if (item) {
-               return item->type;
-       }
-
-       return 0;
-}
-
-void
-rspamd_symcache_composites_foreach (struct rspamd_task *task,
-                                                                                struct rspamd_symcache *cache,
-                                                                                GHFunc func,
-                                                                                gpointer fd)
-{
-       guint i;
-       struct rspamd_symcache_item *item;
-       struct rspamd_symcache_dynamic_item *dyn_item;
-
-       if (task->checkpoint == NULL) {
-               return;
-       }
-
-       PTR_ARRAY_FOREACH (cache->composites, i, item) {
-               dyn_item = rspamd_symcache_get_dynamic (task->checkpoint, item);
-
-               if (!CHECK_START_BIT (task->checkpoint, dyn_item)) {
-                       /* Cannot do it due to 2 passes */
-                       /* SET_START_BIT (task->checkpoint, dyn_item); */
-                       func (item->symbol, item->specific.normal.user_data, fd);
-                       SET_FINISH_BIT (task->checkpoint, dyn_item);
-               }
-       }
-}
-
-bool
-rspamd_symcache_set_allowed_settings_ids (struct rspamd_symcache *cache,
-                                                                                          const gchar *symbol,
-                                                                                          const guint32 *ids,
-                                                                                          guint nids)
-{
-       struct rspamd_symcache_item *item;
-
-       item = rspamd_symcache_find_filter (cache, symbol, false);
-
-       if (item == NULL) {
-               return false;
-       }
-
-       if (nids <= G_N_ELEMENTS (item->allowed_ids.st)) {
-               /* Use static version */
-               memset (&item->allowed_ids, 0, sizeof (item->allowed_ids));
-               for (guint i = 0; i < nids; i++) {
-                       item->allowed_ids.st[i] = ids[i];
-               }
-       }
-       else {
-               /* Need to use a separate list */
-               item->allowed_ids.dyn.e = -1; /* Flag */
-               item->allowed_ids.dyn.n = rspamd_mempool_alloc (cache->static_pool,
-                               sizeof (guint32) * nids);
-               item->allowed_ids.dyn.len = nids;
-               item->allowed_ids.dyn.allocated = nids;
-
-               for (guint i = 0; i < nids; i++) {
-                       item->allowed_ids.dyn.n[i] = ids[i];
-               }
-
-               /* Keep sorted */
-               qsort (item->allowed_ids.dyn.n, nids, sizeof (guint32), rspamd_id_cmp);
-       }
-
-       return true;
-}
-
-bool
-rspamd_symcache_set_forbidden_settings_ids (struct rspamd_symcache *cache,
-                                                                                         const gchar *symbol,
-                                                                                         const guint32 *ids,
-                                                                                         guint nids)
-{
-       struct rspamd_symcache_item *item;
-
-       item = rspamd_symcache_find_filter (cache, symbol, false);
-
-       if (item == NULL) {
-               return false;
-       }
-
-       g_assert (nids < G_MAXUINT16);
-
-       if (nids <= G_N_ELEMENTS (item->forbidden_ids.st)) {
-               /* Use static version */
-               memset (&item->forbidden_ids, 0, sizeof (item->forbidden_ids));
-               for (guint i = 0; i < nids; i++) {
-                       item->forbidden_ids.st[i] = ids[i];
-               }
-       }
-       else {
-               /* Need to use a separate list */
-               item->forbidden_ids.dyn.e = -1; /* Flag */
-               item->forbidden_ids.dyn.n = rspamd_mempool_alloc (cache->static_pool,
-                               sizeof (guint32) * nids);
-               item->forbidden_ids.dyn.len = nids;
-               item->forbidden_ids.dyn.allocated = nids;
-
-               for (guint i = 0; i < nids; i++) {
-                       item->forbidden_ids.dyn.n[i] = ids[i];
-               }
-
-               /* Keep sorted */
-               qsort (item->forbidden_ids.dyn.n, nids, sizeof (guint32), rspamd_id_cmp);
-       }
-
-       return true;
-}
-
-const guint32*
-rspamd_symcache_get_allowed_settings_ids (struct rspamd_symcache *cache,
-                                                                                 const gchar *symbol,
-                                                                                 guint *nids)
-{
-       struct rspamd_symcache_item *item;
-       guint cnt = 0;
-
-       item = rspamd_symcache_find_filter (cache, symbol, false);
-
-       if (item == NULL) {
-               return NULL;
-       }
-
-       if (item->allowed_ids.dyn.e == -1) {
-               /* Dynamic list */
-               *nids = item->allowed_ids.dyn.len;
-
-               return item->allowed_ids.dyn.n;
-       }
-       else {
-               while (item->allowed_ids.st[cnt] != 0 && cnt < G_N_ELEMENTS (item->allowed_ids.st)) {
-                       cnt ++;
-               }
-
-               *nids = cnt;
-
-               return item->allowed_ids.st;
-       }
-}
-
-const guint32*
-rspamd_symcache_get_forbidden_settings_ids (struct rspamd_symcache *cache,
-                                                                                       const gchar *symbol,
-                                                                                       guint *nids)
-{
-       struct rspamd_symcache_item *item;
-       guint cnt = 0;
-
-       item = rspamd_symcache_find_filter (cache, symbol, false);
-
-       if (item == NULL) {
-               return NULL;
-       }
-
-       if (item->forbidden_ids.dyn.e == -1) {
-               /* Dynamic list */
-               *nids = item->allowed_ids.dyn.len;
-
-               return item->allowed_ids.dyn.n;
-       }
-       else {
-               while (item->forbidden_ids.st[cnt] != 0 && cnt < G_N_ELEMENTS (item->allowed_ids.st)) {
-                       cnt ++;
-               }
-
-               *nids = cnt;
-
-               return item->forbidden_ids.st;
-       }
-}
-
-/* Insertion sort: usable for near-sorted ids list */
-static inline void
-rspamd_ids_insertion_sort (guint *a, guint n)
-{
-       for (guint i = 1; i < n; i++) {
-               guint32 tmp = a[i];
-               guint j = i;
-
-               while (j > 0 && tmp < a[j - 1]) {
-                       a[j] = a[j - 1];
-                       j --;
-               }
-
-               a[j] = tmp;
-       }
-}
-
-static inline void
-rspamd_symcache_add_id_to_list (rspamd_mempool_t *pool,
-                                                               struct rspamd_symcache_id_list *ls,
-                                                               guint32 id)
-{
-       guint cnt = 0;
-       guint *new_array;
-
-       if (ls->st[0] == -1) {
-               /* Dynamic array */
-               if (ls->dyn.len < ls->dyn.allocated) {
-                       /* Trivial, append + sort */
-                       ls->dyn.n[ls->dyn.len++] = id;
-               }
-               else {
-                       /* Reallocate */
-                       g_assert (ls->dyn.allocated <= G_MAXINT16);
-                       ls->dyn.allocated *= 2;
-
-                       new_array = rspamd_mempool_alloc (pool,
-                                       ls->dyn.allocated * sizeof (guint32));
-                       memcpy (new_array, ls->dyn.n, ls->dyn.len * sizeof (guint32));
-                       ls->dyn.n = new_array;
-                       ls->dyn.n[ls->dyn.len++] = id;
-               }
-
-               rspamd_ids_insertion_sort (ls->dyn.n, ls->dyn.len);
-       }
-       else {
-               /* Static part */
-               while (ls->st[cnt] != 0 && cnt < G_N_ELEMENTS (ls->st)) {
-                       cnt ++;
-               }
-
-               if (cnt < G_N_ELEMENTS (ls->st)) {
-                       ls->st[cnt] = id;
-               }
-               else {
-                       /* Switch to dynamic */
-                       new_array = rspamd_mempool_alloc (pool,
-                                       G_N_ELEMENTS (ls->st) * 2 * sizeof (guint32));
-                       memcpy (new_array, ls->st,  G_N_ELEMENTS (ls->st) * sizeof (guint32));
-                       ls->dyn.n = new_array;
-                       ls->dyn.e = -1;
-                       ls->dyn.allocated = G_N_ELEMENTS (ls->st) * 2;
-                       ls->dyn.len = G_N_ELEMENTS (ls->st);
-
-                       /* Recursively jump to dynamic branch that will handle insertion + sorting */
-                       rspamd_symcache_add_id_to_list (pool, ls, id);
-               }
-       }
-}
-
-void
-rspamd_symcache_process_settings_elt (struct rspamd_symcache *cache,
-                                                                         struct rspamd_config_settings_elt *elt)
-{
-       guint32 id = elt->id;
-       ucl_object_iter_t iter;
-       struct rspamd_symcache_item *item, *parent;
-       const ucl_object_t *cur;
-
-
-       if (elt->symbols_disabled) {
-               /* Process denied symbols */
-               iter = NULL;
-
-               while ((cur = ucl_object_iterate (elt->symbols_disabled, &iter, true)) != NULL) {
-                       const gchar *sym = ucl_object_key (cur);
-                       item = rspamd_symcache_find_filter (cache, sym, false);
-
-                       if (item) {
-                               if (item->is_virtual) {
-                                       /*
-                                        * Virtual symbols are special:
-                                        * we ignore them in symcache but prevent them from being
-                                        * inserted.
-                                        */
-                                       rspamd_symcache_add_id_to_list (cache->static_pool,
-                                                       &item->forbidden_ids, id);
-                                       msg_debug_cache ("deny virtual symbol %s for settings %ud (%s); "
-                                                                        "parent can still be executed",
-                                                       sym, id, elt->name);
-                               }
-                               else {
-                                       /* Normal symbol, disable it */
-                                       rspamd_symcache_add_id_to_list (cache->static_pool,
-                                                       &item->forbidden_ids, id);
-                                       msg_debug_cache ("deny symbol %s for settings %ud (%s)",
-                                                       sym, id, elt->name);
-                               }
-                       }
-                       else {
-                               msg_warn_cache ("cannot find a symbol to disable %s "
-                                       "when processing settings %ud (%s)",
-                                       sym, id, elt->name);
-                       }
-               }
-       }
-
-       if (elt->symbols_enabled) {
-               iter = NULL;
-
-               while ((cur = ucl_object_iterate (elt->symbols_enabled, &iter, true)) != NULL) {
-                       /* Here, we resolve parent and explicitly allow it */
-                       const gchar *sym = ucl_object_key (cur);
-                       item = rspamd_symcache_find_filter (cache, sym, false);
-
-                       if (item) {
-                               if (item->is_virtual) {
-                                       if (!(item->type & SYMBOL_TYPE_GHOST)) {
-                                               parent = rspamd_symcache_find_filter (cache, sym, true);
-
-                                               if (parent) {
-                                                       if (elt->symbols_disabled &&
-                                                               ucl_object_lookup (elt->symbols_disabled, parent->symbol)) {
-                                                               msg_err_cache ("conflict in %s: cannot enable disabled symbol %s, "
-                                                                                          "wanted to enable symbol %s",
-                                                                               elt->name, parent->symbol, sym);
-                                                               continue;
-                                                       }
-
-                                                       rspamd_symcache_add_id_to_list (cache->static_pool,
-                                                                       &parent->exec_only_ids, id);
-                                                       msg_debug_cache ("allow just execution of symbol %s for settings %ud (%s)",
-                                                                       parent->symbol, id, elt->name);
-                                               }
-                                       }
-                                       /* Ignore ghosts */
-                               }
-
-                               rspamd_symcache_add_id_to_list (cache->static_pool,
-                                               &item->allowed_ids, id);
-                               msg_debug_cache ("allow execution of symbol %s for settings %ud (%s)",
-                                               sym, id, elt->name);
-                       }
-                       else {
-                               msg_warn_cache ("cannot find a symbol to enable %s "
-                                                               "when processing settings %ud (%s)",
-                                               sym, id, elt->name);
-                       }
-               }
-       }
-}
-
-gint
-rspamd_symcache_item_flags (struct rspamd_symcache_item *item)
-{
-       if (item) {
-               return item->type;
-       }
-
-       return 0;
-}
-
-const gchar*
-rspamd_symcache_item_name (struct rspamd_symcache_item *item)
-{
-       return item ? item->symbol : NULL;
-}
-
-const struct rspamd_symcache_item_stat *
-rspamd_symcache_item_stat (struct rspamd_symcache_item *item)
-{
-       return item ? item->st : NULL;
-}
-
-gboolean
-rspamd_symcache_item_is_enabled (struct rspamd_symcache_item *item)
-{
-       if (item) {
-               if (!item->enabled) {
-                       return FALSE;
-               }
-
-               if (item->is_virtual && item->specific.virtual.parent_item != NULL) {
-                       return rspamd_symcache_item_is_enabled (item->specific.virtual.parent_item);
-               }
-
-               return TRUE;
-       }
-
-       return FALSE;
-}
-
-struct rspamd_symcache_item * rspamd_symcache_item_get_parent (
-               struct rspamd_symcache_item *item)
-{
-       if (item && item->is_virtual && item->specific.virtual.parent_item != NULL) {
-               return item->specific.virtual.parent_item;
-       }
-
-       return NULL;
-}
-
-const GPtrArray*
-rspamd_symcache_item_get_deps (struct rspamd_symcache_item *item)
-{
-       struct rspamd_symcache_item *parent;
-
-       if (item) {
-               parent = rspamd_symcache_item_get_parent (item);
-
-               if (parent) {
-                       item = parent;
-               }
-
-               return item->deps;
-       }
-
-       return NULL;
-}
-
-const GPtrArray*
-rspamd_symcache_item_get_rdeps (struct rspamd_symcache_item *item)
-{
-       struct rspamd_symcache_item *parent;
-
-       if (item) {
-               parent = rspamd_symcache_item_get_parent (item);
-
-               if (parent) {
-                       item = parent;
-               }
-
-               return item->rdeps;
-       }
-
-       return NULL;
-}
-
-void
-rspamd_symcache_enable_profile (struct rspamd_task *task)
-{
-       struct cache_savepoint *checkpoint = task->checkpoint;
-
-       if (checkpoint && !checkpoint->profile) {
-               ev_now_update_if_cheap (task->event_loop);
-               ev_tstamp now = ev_now (task->event_loop);
-               checkpoint->profile_start = now;
-
-               msg_debug_cache_task ("enable profiling of symbols for task");
-               checkpoint->profile = TRUE;
-       }
-}