Revision 61be1e1f9eb2822799e581d912a22636a2220058 authored by Junio C Hamano on 05 April 2024, 18:00:12 UTC, committed by Junio C Hamano on 05 April 2024, 18:00:12 UTC
The pack-bitmap machinery learned to write pseudo-merge bitmaps, which act as imaginary octopus merges covering un-bitmapped reference tips. This enhances bitmap coverage, and thus, performance, for repositories with many references using bitmaps. * tb/pseudo-merge-reachability-bitmap: (24 commits) t/perf: implement performace tests for pseudo-merge bitmaps pseudo-merge: implement support for finding existing merges ewah: `bitmap_equals_ewah()` pack-bitmap: extra trace2 information pack-bitmap.c: use pseudo-merges during traversal t/test-lib-functions.sh: support `--date` in `test_commit_bulk()` pack-bitmap: implement test helpers for pseudo-merge ewah: implement `ewah_bitmap_popcount()` pseudo-merge: implement support for reading pseudo-merge commits pack-bitmap.c: read pseudo-merge extension pseudo-merge: scaffolding for reads pack-bitmap: extract `read_bitmap()` function pack-bitmap-write.c: write pseudo-merge table pack-bitmap-write.c: select pseudo-merge commits pseudo-merge: implement support for selecting pseudo-merge commits pack-bitmap: make `bitmap_writer_push_bitmapped_commit()` public pack-bitmap: implement `bitmap_writer_has_bitmapped_object_id()` pack-bitmap-write: support storing pseudo-merge commits pseudo-merge.ch: initial commit pack-bitmap: move some initialization to `bitmap_writer_init()` ...
notes-cache.c
#include "git-compat-util.h"
#include "notes-cache.h"
#include "object-store-ll.h"
#include "pretty.h"
#include "repository.h"
#include "commit.h"
#include "refs.h"
#include "strbuf.h"
static int notes_cache_match_validity(struct repository *r,
const char *ref,
const char *validity)
{
struct object_id oid;
struct commit *commit;
struct pretty_print_context pretty_ctx;
struct strbuf msg = STRBUF_INIT;
int ret;
if (read_ref(ref, &oid) < 0)
return 0;
commit = lookup_commit_reference_gently(r, &oid, 1);
if (!commit)
return 0;
memset(&pretty_ctx, 0, sizeof(pretty_ctx));
repo_format_commit_message(r, commit, "%s", &msg,
&pretty_ctx);
strbuf_trim(&msg);
ret = !strcmp(msg.buf, validity);
strbuf_release(&msg);
return ret;
}
void notes_cache_init(struct repository *r, struct notes_cache *c,
const char *name, const char *validity)
{
struct strbuf ref = STRBUF_INIT;
int flags = NOTES_INIT_WRITABLE;
memset(c, 0, sizeof(*c));
c->validity = xstrdup(validity);
strbuf_addf(&ref, "refs/notes/%s", name);
if (!notes_cache_match_validity(r, ref.buf, validity))
flags |= NOTES_INIT_EMPTY;
init_notes(&c->tree, ref.buf, combine_notes_overwrite, flags);
strbuf_release(&ref);
}
int notes_cache_write(struct notes_cache *c)
{
struct object_id tree_oid, commit_oid;
if (!c || !c->tree.initialized || !c->tree.update_ref ||
!*c->tree.update_ref)
return -1;
if (!c->tree.dirty)
return 0;
if (write_notes_tree(&c->tree, &tree_oid))
return -1;
if (commit_tree(c->validity, strlen(c->validity), &tree_oid, NULL,
&commit_oid, NULL, NULL) < 0)
return -1;
if (update_ref("update notes cache", c->tree.update_ref, &commit_oid,
NULL, 0, UPDATE_REFS_QUIET_ON_ERR) < 0)
return -1;
return 0;
}
char *notes_cache_get(struct notes_cache *c, struct object_id *key_oid,
size_t *outsize)
{
const struct object_id *value_oid;
enum object_type type;
char *value;
unsigned long size;
value_oid = get_note(&c->tree, key_oid);
if (!value_oid)
return NULL;
value = repo_read_object_file(the_repository, value_oid, &type, &size);
*outsize = size;
return value;
}
int notes_cache_put(struct notes_cache *c, struct object_id *key_oid,
const char *data, size_t size)
{
struct object_id value_oid;
if (write_object_file(data, size, OBJ_BLOB, &value_oid) < 0)
return -1;
return add_note(&c->tree, key_oid, &value_oid, NULL);
}
Computing file changes ...
