#include <haproxy/api.h>
#include <haproxy/freq_ctr.h>
#include <haproxy/list.h>
+#include <haproxy/pool-t.h>
#include <haproxy/thread.h>
-/* On architectures supporting threads and double-word CAS, we can implement
- * lock-less memory pools. This isn't supported for debugging modes however.
- */
-#if defined(USE_THREAD) && defined(HA_HAVE_CAS_DW) && !defined(DEBUG_NO_LOCKLESS_POOLS) && !defined(DEBUG_UAF) && !defined(DEBUG_FAIL_ALLOC)
-#define CONFIG_HAP_LOCKLESS_POOLS
-#endif
-
-#ifndef DEBUG_DONT_SHARE_POOLS
-#define MEM_F_SHARED 0x1
-#else
-#define MEM_F_SHARED 0
-#endif
-#define MEM_F_EXACT 0x2
-
-/* reserve an extra void* at the end of a pool for linking */
-#ifdef DEBUG_MEMORY_POOLS
-#define POOL_EXTRA (sizeof(void *))
-#define POOL_LINK(pool, item) (void **)(((char *)item) + (pool->size))
-#else
-#define POOL_EXTRA (0)
-#define POOL_LINK(pool, item) ((void **)(item))
-#endif
-
-#define MAX_BASE_POOLS 32
-
-#define POOL_AVG_SAMPLES 1024
-
-struct pool_cache_head {
- struct list list; /* head of objects in this pool */
- size_t size; /* size of an object */
- unsigned int count; /* number of objects in this pool */
-};
-
-struct pool_cache_item {
- struct list by_pool; /* link to objects in this pool */
- struct list by_lru; /* link to objects by LRU order */
-};
-
extern struct pool_cache_head pool_cache[][MAX_BASE_POOLS];
extern THREAD_LOCAL size_t pool_cache_bytes; /* total cache size */
extern THREAD_LOCAL size_t pool_cache_count; /* #cache objects */
-
-#ifdef CONFIG_HAP_LOCKLESS_POOLS
-struct pool_free_list {
- void **free_list;
- uintptr_t seq;
-};
-#endif
-
-/* Note below, in case of lockless pools, we still need the lock only for
- * the flush() operation.
- */
-struct pool_head {
- void **free_list;
-#ifdef CONFIG_HAP_LOCKLESS_POOLS
- uintptr_t seq;
-#endif
- __decl_thread(HA_SPINLOCK_T lock); /* the spin lock */
- unsigned int used; /* how many chunks are currently in use */
- unsigned int needed_avg;/* floating indicator between used and allocated */
- unsigned int allocated; /* how many chunks have been allocated */
- unsigned int limit; /* hard limit on the number of chunks */
- unsigned int minavail; /* how many chunks are expected to be used */
- unsigned int size; /* chunk size */
- unsigned int flags; /* MEM_F_* */
- unsigned int users; /* number of pools sharing this zone */
- unsigned int failed; /* failed allocations */
- struct list list; /* list of all known pools */
- char name[12]; /* name of the pool */
-} __attribute__((aligned(64)));
-
-
extern struct pool_head pool_base_start[MAX_BASE_POOLS];
extern unsigned int pool_base_count;
--- /dev/null
+/*
+ * include/haproxy/pool-t.h
+ * Memory pools configuration and type definitions.
+ *
+ * Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _HAPROXY_POOL_T_H
+#define _HAPROXY_POOL_T_H
+
+#include <haproxy/api.h>
+#include <haproxy/list.h>
+#include <haproxy/thread.h>
+
+/* On architectures supporting threads and double-word CAS, we can implement
+ * lock-less memory pools. This isn't supported for debugging modes however.
+ */
+#if defined(USE_THREAD) && defined(HA_HAVE_CAS_DW) && !defined(DEBUG_NO_LOCKLESS_POOLS) && !defined(DEBUG_UAF) && !defined(DEBUG_FAIL_ALLOC)
+#define CONFIG_HAP_LOCKLESS_POOLS
+#endif
+
+/* Pools of very similar size are shared by default, unless macro
+ * DEBUG_DONT_SHARE_POOLS is set.
+ */
+#ifndef DEBUG_DONT_SHARE_POOLS
+#define MEM_F_SHARED 0x1
+#else
+#define MEM_F_SHARED 0
+#endif
+#define MEM_F_EXACT 0x2
+
+/* By default, free objects are linked by a pointer stored at the beginning of
+ * the memory area. When DEBUG_MEMORY_POOLS is set, the allocated area is
+ * inflated by the size of a pointer so that the link is placed at the end
+ * of the objects. Hence free objects in pools remain intact. In addition,
+ * this location is used to keep a pointer to the pool the object was
+ * allocated from, and verify it's freed into the appropriate one.
+ */
+#ifdef DEBUG_MEMORY_POOLS
+#define POOL_EXTRA (sizeof(void *))
+#define POOL_LINK(pool, item) (void **)(((char *)(item)) + ((pool)->size))
+#else
+#define POOL_EXTRA (0)
+#define POOL_LINK(pool, item) ((void **)(item))
+#endif
+
+#define MAX_BASE_POOLS 32
+
+#define POOL_AVG_SAMPLES 1024
+
+
+struct pool_cache_head {
+ struct list list; /* head of objects in this pool */
+ size_t size; /* size of an object */
+ unsigned int count; /* number of objects in this pool */
+};
+
+struct pool_cache_item {
+ struct list by_pool; /* link to objects in this pool */
+ struct list by_lru; /* link to objects by LRU order */
+};
+
+struct pool_free_list {
+ void **free_list;
+ uintptr_t seq;
+};
+
+/* Note below, in case of lockless pools, we still need the lock only for
+ * the flush() operation.
+ */
+struct pool_head {
+ void **free_list;
+#ifdef CONFIG_HAP_LOCKLESS_POOLS
+ uintptr_t seq;
+#endif
+ __decl_thread(HA_SPINLOCK_T lock); /* the spin lock */
+ unsigned int used; /* how many chunks are currently in use */
+ unsigned int needed_avg;/* floating indicator between used and allocated */
+ unsigned int allocated; /* how many chunks have been allocated */
+ unsigned int limit; /* hard limit on the number of chunks */
+ unsigned int minavail; /* how many chunks are expected to be used */
+ unsigned int size; /* chunk size */
+ unsigned int flags; /* MEM_F_* */
+ unsigned int users; /* number of pools sharing this zone */
+ unsigned int failed; /* failed allocations */
+ struct list list; /* list of all known pools */
+ char name[12]; /* name of the pool */
+} __attribute__((aligned(64)));
+
+#endif /* _HAPROXY_POOL_T_H */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ */
projects / thirdparty / haproxy.git / commitdiff
