-#include "cache.h"
-#include "config.h"
-#include "dir.h"
#include "git-compat-util.h"
+#include "config.h"
#include "lockfile.h"
#include "pack.h"
#include "packfile.h"
#include "bloom.h"
#include "commit-slab.h"
#include "shallow.h"
+#include "json-writer.h"
+#include "trace2.h"
void git_test_write_commit_graph_or_die(void)
{
const unsigned char *data, *chunk_lookup;
uint32_t i;
struct commit_graph *graph;
- uint64_t last_chunk_offset;
- uint32_t last_chunk_id;
+ uint64_t next_chunk_offset;
uint32_t graph_signature;
unsigned char graph_version, hash_version;
graph->data = graph_map;
graph->data_len = graph_size;
- last_chunk_id = 0;
- last_chunk_offset = 8;
+ if (graph_size < GRAPH_HEADER_SIZE +
+ (graph->num_chunks + 1) * GRAPH_CHUNKLOOKUP_WIDTH +
+ GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) {
+ error(_("commit-graph file is too small to hold %u chunks"),
+ graph->num_chunks);
+ free(graph);
+ return NULL;
+ }
+
chunk_lookup = data + 8;
+ next_chunk_offset = get_be64(chunk_lookup + 4);
for (i = 0; i < graph->num_chunks; i++) {
uint32_t chunk_id;
- uint64_t chunk_offset;
+ uint64_t chunk_offset = next_chunk_offset;
int chunk_repeated = 0;
- if (data + graph_size - chunk_lookup <
- GRAPH_CHUNKLOOKUP_WIDTH) {
- error(_("commit-graph chunk lookup table entry missing; file may be incomplete"));
- goto free_and_return;
- }
-
chunk_id = get_be32(chunk_lookup + 0);
- chunk_offset = get_be64(chunk_lookup + 4);
chunk_lookup += GRAPH_CHUNKLOOKUP_WIDTH;
+ next_chunk_offset = get_be64(chunk_lookup + 4);
if (chunk_offset > graph_size - the_hash_algo->rawsz) {
error(_("commit-graph improper chunk offset %08x%08x"), (uint32_t)(chunk_offset >> 32),
case GRAPH_CHUNKID_OIDLOOKUP:
if (graph->chunk_oid_lookup)
chunk_repeated = 1;
- else
+ else {
graph->chunk_oid_lookup = data + chunk_offset;
+ graph->num_commits = (next_chunk_offset - chunk_offset)
+ / graph->hash_len;
+ }
break;
case GRAPH_CHUNKID_DATA:
error(_("commit-graph chunk id %08x appears multiple times"), chunk_id);
goto free_and_return;
}
-
- if (last_chunk_id == GRAPH_CHUNKID_OIDLOOKUP)
- {
- graph->num_commits = (chunk_offset - last_chunk_offset)
- / graph->hash_len;
- }
-
- last_chunk_id = chunk_id;
- last_chunk_offset = chunk_offset;
}
if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) {
return !!r->objects->commit_graph;
r->objects->commit_graph_attempted = 1;
- if (git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD, 0))
- die("dying as requested by the '%s' variable on commit-graph load!",
- GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD);
-
prepare_repo_settings(r);
if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) &&
int parse_commit_in_graph(struct repository *r, struct commit *item)
{
+ static int checked_env = 0;
+
+ if (!checked_env &&
+ git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE, 0))
+ die("dying as requested by the '%s' variable on commit-graph parse!",
+ GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE);
+ checked_env = 1;
+
if (!prepare_commit_graph(r))
return 0;
return parse_commit_in_graph_one(r, r->objects->commit_graph, item);
const struct split_commit_graph_opts *split_opts;
size_t total_bloom_filter_data_size;
+ const struct bloom_filter_settings *bloom_settings;
};
-static void write_graph_chunk_fanout(struct hashfile *f,
- struct write_commit_graph_context *ctx)
+static int write_graph_chunk_fanout(struct hashfile *f,
+ struct write_commit_graph_context *ctx)
{
int i, count = 0;
struct commit **list = ctx->commits.list;
hashwrite_be32(f, count);
}
+
+ return 0;
}
-static void write_graph_chunk_oids(struct hashfile *f, int hash_len,
- struct write_commit_graph_context *ctx)
+static int write_graph_chunk_oids(struct hashfile *f,
+ struct write_commit_graph_context *ctx)
{
struct commit **list = ctx->commits.list;
int count;
for (count = 0; count < ctx->commits.nr; count++, list++) {
display_progress(ctx->progress, ++ctx->progress_cnt);
- hashwrite(f, (*list)->object.oid.hash, (int)hash_len);
+ hashwrite(f, (*list)->object.oid.hash, the_hash_algo->rawsz);
}
+
+ return 0;
}
static const unsigned char *commit_to_sha1(size_t index, void *table)
return commits[index]->object.oid.hash;
}
-static void write_graph_chunk_data(struct hashfile *f, int hash_len,
- struct write_commit_graph_context *ctx)
+static int write_graph_chunk_data(struct hashfile *f,
+ struct write_commit_graph_context *ctx)
{
struct commit **list = ctx->commits.list;
struct commit **last = ctx->commits.list + ctx->commits.nr;
die(_("unable to parse commit %s"),
oid_to_hex(&(*list)->object.oid));
tree = get_commit_tree_oid(*list);
- hashwrite(f, tree->hash, hash_len);
+ hashwrite(f, tree->hash, the_hash_algo->rawsz);
parent = (*list)->parents;
list++;
}
+
+ return 0;
}
-static void write_graph_chunk_extra_edges(struct hashfile *f,
- struct write_commit_graph_context *ctx)
+static int write_graph_chunk_extra_edges(struct hashfile *f,
+ struct write_commit_graph_context *ctx)
{
struct commit **list = ctx->commits.list;
struct commit **last = ctx->commits.list + ctx->commits.nr;
list++;
}
+
+ return 0;
}
-static void write_graph_chunk_bloom_indexes(struct hashfile *f,
- struct write_commit_graph_context *ctx)
+static int write_graph_chunk_bloom_indexes(struct hashfile *f,
+ struct write_commit_graph_context *ctx)
{
struct commit **list = ctx->commits.list;
struct commit **last = ctx->commits.list + ctx->commits.nr;
uint32_t cur_pos = 0;
- struct progress *progress = NULL;
- int i = 0;
-
- if (ctx->report_progress)
- progress = start_delayed_progress(
- _("Writing changed paths Bloom filters index"),
- ctx->commits.nr);
while (list < last) {
struct bloom_filter *filter = get_bloom_filter(ctx->r, *list, 0);
- cur_pos += filter->len;
- display_progress(progress, ++i);
+ size_t len = filter ? filter->len : 0;
+ cur_pos += len;
+ display_progress(ctx->progress, ++ctx->progress_cnt);
hashwrite_be32(f, cur_pos);
list++;
}
- stop_progress(&progress);
+ return 0;
+}
+
+static void trace2_bloom_filter_settings(struct write_commit_graph_context *ctx)
+{
+ struct json_writer jw = JSON_WRITER_INIT;
+
+ jw_object_begin(&jw, 0);
+ jw_object_intmax(&jw, "hash_version", ctx->bloom_settings->hash_version);
+ jw_object_intmax(&jw, "num_hashes", ctx->bloom_settings->num_hashes);
+ jw_object_intmax(&jw, "bits_per_entry", ctx->bloom_settings->bits_per_entry);
+ jw_end(&jw);
+
+ trace2_data_json("bloom", ctx->r, "settings", &jw);
+
+ jw_release(&jw);
}
-static void write_graph_chunk_bloom_data(struct hashfile *f,
- struct write_commit_graph_context *ctx,
- const struct bloom_filter_settings *settings)
+static int write_graph_chunk_bloom_data(struct hashfile *f,
+ struct write_commit_graph_context *ctx)
{
struct commit **list = ctx->commits.list;
struct commit **last = ctx->commits.list + ctx->commits.nr;
- struct progress *progress = NULL;
- int i = 0;
- if (ctx->report_progress)
- progress = start_delayed_progress(
- _("Writing changed paths Bloom filters data"),
- ctx->commits.nr);
+ trace2_bloom_filter_settings(ctx);
- hashwrite_be32(f, settings->hash_version);
- hashwrite_be32(f, settings->num_hashes);
- hashwrite_be32(f, settings->bits_per_entry);
+ hashwrite_be32(f, ctx->bloom_settings->hash_version);
+ hashwrite_be32(f, ctx->bloom_settings->num_hashes);
+ hashwrite_be32(f, ctx->bloom_settings->bits_per_entry);
while (list < last) {
struct bloom_filter *filter = get_bloom_filter(ctx->r, *list, 0);
- display_progress(progress, ++i);
- hashwrite(f, filter->data, filter->len * sizeof(unsigned char));
+ size_t len = filter ? filter->len : 0;
+
+ display_progress(ctx->progress, ++ctx->progress_cnt);
+ if (len)
+ hashwrite(f, filter->data, len * sizeof(unsigned char));
list++;
}
- stop_progress(&progress);
+ return 0;
}
static int oid_compare(const void *_a, const void *_b)
_("Collecting referenced commits"), 0);
for_each_ref(add_ref_to_set, &data);
+
+ stop_progress(&data.progress);
+
result = write_commit_graph(odb, NULL, &commits,
flags, split_opts);
oidset_clear(&commits);
- if (data.progress)
- stop_progress(&data.progress);
return result;
}
return 0;
}
+typedef int (*chunk_write_fn)(struct hashfile *f,
+ struct write_commit_graph_context *ctx);
+
+struct chunk_info {
+ uint32_t id;
+ uint64_t size;
+ chunk_write_fn write_fn;
+};
+
static int write_commit_graph_file(struct write_commit_graph_context *ctx)
{
uint32_t i;
int fd;
struct hashfile *f;
struct lock_file lk = LOCK_INIT;
- uint32_t chunk_ids[MAX_NUM_CHUNKS + 1];
- uint64_t chunk_offsets[MAX_NUM_CHUNKS + 1];
+ struct chunk_info chunks[MAX_NUM_CHUNKS + 1];
const unsigned hashsz = the_hash_algo->rawsz;
struct strbuf progress_title = STRBUF_INIT;
int num_chunks = 3;
+ uint64_t chunk_offset;
struct object_id file_hash;
- const struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS;
+ struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS;
+
+ if (!ctx->bloom_settings) {
+ bloom_settings.bits_per_entry = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_BITS_PER_ENTRY",
+ bloom_settings.bits_per_entry);
+ bloom_settings.num_hashes = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_NUM_HASHES",
+ bloom_settings.num_hashes);
+ ctx->bloom_settings = &bloom_settings;
+ }
if (ctx->split) {
struct strbuf tmp_file = STRBUF_INIT;
f = hashfd(lk.tempfile->fd, lk.tempfile->filename.buf);
}
- chunk_ids[0] = GRAPH_CHUNKID_OIDFANOUT;
- chunk_ids[1] = GRAPH_CHUNKID_OIDLOOKUP;
- chunk_ids[2] = GRAPH_CHUNKID_DATA;
+ chunks[0].id = GRAPH_CHUNKID_OIDFANOUT;
+ chunks[0].size = GRAPH_FANOUT_SIZE;
+ chunks[0].write_fn = write_graph_chunk_fanout;
+ chunks[1].id = GRAPH_CHUNKID_OIDLOOKUP;
+ chunks[1].size = hashsz * ctx->commits.nr;
+ chunks[1].write_fn = write_graph_chunk_oids;
+ chunks[2].id = GRAPH_CHUNKID_DATA;
+ chunks[2].size = (hashsz + 16) * ctx->commits.nr;
+ chunks[2].write_fn = write_graph_chunk_data;
if (ctx->num_extra_edges) {
- chunk_ids[num_chunks] = GRAPH_CHUNKID_EXTRAEDGES;
+ chunks[num_chunks].id = GRAPH_CHUNKID_EXTRAEDGES;
+ chunks[num_chunks].size = 4 * ctx->num_extra_edges;
+ chunks[num_chunks].write_fn = write_graph_chunk_extra_edges;
num_chunks++;
}
if (ctx->changed_paths) {
- chunk_ids[num_chunks] = GRAPH_CHUNKID_BLOOMINDEXES;
+ chunks[num_chunks].id = GRAPH_CHUNKID_BLOOMINDEXES;
+ chunks[num_chunks].size = sizeof(uint32_t) * ctx->commits.nr;
+ chunks[num_chunks].write_fn = write_graph_chunk_bloom_indexes;
num_chunks++;
- chunk_ids[num_chunks] = GRAPH_CHUNKID_BLOOMDATA;
+ chunks[num_chunks].id = GRAPH_CHUNKID_BLOOMDATA;
+ chunks[num_chunks].size = sizeof(uint32_t) * 3
+ + ctx->total_bloom_filter_data_size;
+ chunks[num_chunks].write_fn = write_graph_chunk_bloom_data;
num_chunks++;
}
if (ctx->num_commit_graphs_after > 1) {
- chunk_ids[num_chunks] = GRAPH_CHUNKID_BASE;
+ chunks[num_chunks].id = GRAPH_CHUNKID_BASE;
+ chunks[num_chunks].size = hashsz * (ctx->num_commit_graphs_after - 1);
+ chunks[num_chunks].write_fn = write_graph_chunk_base;
num_chunks++;
}
- chunk_ids[num_chunks] = 0;
-
- chunk_offsets[0] = 8 + (num_chunks + 1) * GRAPH_CHUNKLOOKUP_WIDTH;
- chunk_offsets[1] = chunk_offsets[0] + GRAPH_FANOUT_SIZE;
- chunk_offsets[2] = chunk_offsets[1] + hashsz * ctx->commits.nr;
- chunk_offsets[3] = chunk_offsets[2] + (hashsz + 16) * ctx->commits.nr;
-
- num_chunks = 3;
- if (ctx->num_extra_edges) {
- chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] +
- 4 * ctx->num_extra_edges;
- num_chunks++;
- }
- if (ctx->changed_paths) {
- chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] +
- sizeof(uint32_t) * ctx->commits.nr;
- num_chunks++;
-
- chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] +
- sizeof(uint32_t) * 3 + ctx->total_bloom_filter_data_size;
- num_chunks++;
- }
- if (ctx->num_commit_graphs_after > 1) {
- chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] +
- hashsz * (ctx->num_commit_graphs_after - 1);
- num_chunks++;
- }
+ chunks[num_chunks].id = 0;
+ chunks[num_chunks].size = 0;
hashwrite_be32(f, GRAPH_SIGNATURE);
hashwrite_u8(f, num_chunks);
hashwrite_u8(f, ctx->num_commit_graphs_after - 1);
+ chunk_offset = 8 + (num_chunks + 1) * GRAPH_CHUNKLOOKUP_WIDTH;
for (i = 0; i <= num_chunks; i++) {
uint32_t chunk_write[3];
- chunk_write[0] = htonl(chunk_ids[i]);
- chunk_write[1] = htonl(chunk_offsets[i] >> 32);
- chunk_write[2] = htonl(chunk_offsets[i] & 0xffffffff);
+ chunk_write[0] = htonl(chunks[i].id);
+ chunk_write[1] = htonl(chunk_offset >> 32);
+ chunk_write[2] = htonl(chunk_offset & 0xffffffff);
hashwrite(f, chunk_write, 12);
+
+ chunk_offset += chunks[i].size;
}
if (ctx->report_progress) {
progress_title.buf,
num_chunks * ctx->commits.nr);
}
- write_graph_chunk_fanout(f, ctx);
- write_graph_chunk_oids(f, hashsz, ctx);
- write_graph_chunk_data(f, hashsz, ctx);
- if (ctx->num_extra_edges)
- write_graph_chunk_extra_edges(f, ctx);
- if (ctx->changed_paths) {
- write_graph_chunk_bloom_indexes(f, ctx);
- write_graph_chunk_bloom_data(f, ctx, &bloom_settings);
- }
- if (ctx->num_commit_graphs_after > 1 &&
- write_graph_chunk_base(f, ctx)) {
- return -1;
+
+ for (i = 0; i < num_chunks; i++) {
+ uint64_t start_offset = f->total + f->offset;
+
+ if (chunks[i].write_fn(f, ctx))
+ return -1;
+
+ if (f->total + f->offset != start_offset + chunks[i].size)
+ BUG("expected to write %"PRId64" bytes to chunk %"PRIx32", but wrote %"PRId64" instead",
+ chunks[i].size, chunks[i].id,
+ f->total + f->offset - start_offset);
}
+
stop_progress(&ctx->progress);
strbuf_release(&progress_title);
ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0;
ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0;
ctx->split_opts = split_opts;
- ctx->changed_paths = flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS ? 1 : 0;
ctx->total_bloom_filter_data_size = 0;
+ if (flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS)
+ ctx->changed_paths = 1;
+ if (!(flags & COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS)) {
+ struct commit_graph *g;
+ prepare_commit_graph_one(ctx->r, ctx->odb);
+
+ g = ctx->r->objects->commit_graph;
+
+ /* We have changed-paths already. Keep them in the next graph */
+ if (g && g->chunk_bloom_data) {
+ ctx->changed_paths = 1;
+ ctx->bloom_settings = g->bloom_filter_settings;
+ }
+ }
+
if (ctx->split) {
struct commit_graph *g;
prepare_commit_graph(ctx->r);
projects / thirdparty / git.git / blobdiff