diff options
Diffstat (limited to 'read-cache.c')
| -rw-r--r-- | read-cache.c | 170 |
1 files changed, 112 insertions, 58 deletions
diff --git a/read-cache.c b/read-cache.c index 87d5db3fb0..f2c53eb8a8 100644 --- a/read-cache.c +++ b/read-cache.c @@ -17,6 +17,7 @@ #include "commit.h" #include "blob.h" #include "resolve-undo.h" +#include "run-command.h" #include "strbuf.h" #include "varint.h" #include "split-index.h" @@ -194,7 +195,7 @@ int match_stat_data(const struct stat_data *sd, struct stat *st) * cache, ie the parts that aren't tracked by GIT, and only used * to validate the cache. */ -void fill_stat_cache_info(struct cache_entry *ce, struct stat *st) +void fill_stat_cache_info(struct index_state *istate, struct cache_entry *ce, struct stat *st) { fill_stat_data(&ce->ce_stat_data, st); @@ -203,7 +204,7 @@ void fill_stat_cache_info(struct cache_entry *ce, struct stat *st) if (S_ISREG(st->st_mode)) { ce_mark_uptodate(ce); - mark_fsmonitor_valid(ce); + mark_fsmonitor_valid(istate, ce); } } @@ -548,7 +549,7 @@ static int index_name_stage_pos(const struct index_state *istate, const char *na first = 0; last = istate->cache_nr; while (last > first) { - int next = (last + first) >> 1; + int next = first + ((last - first) >> 1); struct cache_entry *ce = istate->cache[next]; int cmp = cache_name_stage_compare(name, namelen, stage, ce->name, ce_namelen(ce), ce_stage(ce)); if (!cmp) @@ -588,13 +589,19 @@ int remove_index_entry_at(struct index_state *istate, int pos) * CE_REMOVE is set in ce_flags. This is much more effective than * calling remove_index_entry_at() for each entry to be removed. */ -void remove_marked_cache_entries(struct index_state *istate) +void remove_marked_cache_entries(struct index_state *istate, int invalidate) { struct cache_entry **ce_array = istate->cache; unsigned int i, j; for (i = j = 0; i < istate->cache_nr; i++) { if (ce_array[i]->ce_flags & CE_REMOVE) { + if (invalidate) { + cache_tree_invalidate_path(istate, + ce_array[i]->name); + untracked_cache_remove_from_index(istate, + ce_array[i]->name); + } remove_name_hash(istate, ce_array[i]); save_or_free_index_entry(istate, ce_array[i]); } @@ -702,6 +709,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st, int add_option = (ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE| (intent_only ? ADD_CACHE_NEW_ONLY : 0)); int hash_flags = HASH_WRITE_OBJECT; + struct object_id oid; if (flags & ADD_CACHE_RENORMALIZE) hash_flags |= HASH_RENORMALIZE; @@ -711,6 +719,8 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st, namelen = strlen(path); if (S_ISDIR(st_mode)) { + if (resolve_gitlink_ref(path, "HEAD", &oid) < 0) + return error(_("'%s' does not have a commit checked out"), path); while (namelen && path[namelen-1] == '/') namelen--; } @@ -718,7 +728,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st, memcpy(ce->name, path, namelen); ce->ce_namelen = namelen; if (!intent_only) - fill_stat_cache_info(ce, st); + fill_stat_cache_info(istate, ce, st); else ce->ce_flags |= CE_INTENT_TO_ADD; @@ -1433,7 +1443,7 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate, */ if (!S_ISGITLINK(ce->ce_mode)) { ce_mark_uptodate(ce); - mark_fsmonitor_valid(ce); + mark_fsmonitor_valid(istate, ce); } return ce; } @@ -1448,7 +1458,7 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate, updated = make_empty_cache_entry(istate, ce_namelen(ce)); copy_cache_entry(updated, ce); memcpy(updated->name, ce->name, ce->ce_namelen + 1); - fill_stat_cache_info(updated, &st); + fill_stat_cache_info(istate, updated, &st); /* * If ignore_valid is not set, we should leave CE_VALID bit * alone. Otherwise, paths marked with --no-assume-unchanged @@ -1645,39 +1655,24 @@ struct ondisk_cache_entry { uint32_t uid; uint32_t gid; uint32_t size; - unsigned char sha1[20]; - uint16_t flags; - char name[FLEX_ARRAY]; /* more */ -}; - -/* - * This struct is used when CE_EXTENDED bit is 1 - * The struct must match ondisk_cache_entry exactly from - * ctime till flags - */ -struct ondisk_cache_entry_extended { - struct cache_time ctime; - struct cache_time mtime; - uint32_t dev; - uint32_t ino; - uint32_t mode; - uint32_t uid; - uint32_t gid; - uint32_t size; - unsigned char sha1[20]; - uint16_t flags; - uint16_t flags2; - char name[FLEX_ARRAY]; /* more */ + /* + * unsigned char hash[hashsz]; + * uint16_t flags; + * if (flags & CE_EXTENDED) + * uint16_t flags2; + */ + unsigned char data[GIT_MAX_RAWSZ + 2 * sizeof(uint16_t)]; + char name[FLEX_ARRAY]; }; /* These are only used for v3 or lower */ #define align_padding_size(size, len) ((size + (len) + 8) & ~7) - (size + len) -#define align_flex_name(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7) +#define align_flex_name(STRUCT,len) ((offsetof(struct STRUCT,data) + (len) + 8) & ~7) #define ondisk_cache_entry_size(len) align_flex_name(ondisk_cache_entry,len) -#define ondisk_cache_entry_extended_size(len) align_flex_name(ondisk_cache_entry_extended,len) -#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \ - ondisk_cache_entry_extended_size(ce_namelen(ce)) : \ - ondisk_cache_entry_size(ce_namelen(ce))) +#define ondisk_data_size(flags, len) (the_hash_algo->rawsz + \ + ((flags & CE_EXTENDED) ? 2 : 1) * sizeof(uint16_t) + len) +#define ondisk_data_size_max(len) (ondisk_data_size(CE_EXTENDED, len)) +#define ondisk_ce_size(ce) (ondisk_cache_entry_size(ondisk_data_size((ce)->ce_flags, ce_namelen(ce)))) /* Allow fsck to force verification of the index checksum. */ int verify_index_checksum; @@ -1751,6 +1746,8 @@ static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool, struct cache_entry *ce; size_t len; const char *name; + const unsigned hashsz = the_hash_algo->rawsz; + const uint16_t *flagsp = (const uint16_t *)(ondisk->data + hashsz); unsigned int flags; size_t copy_len = 0; /* @@ -1763,22 +1760,20 @@ static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool, int expand_name_field = version == 4; /* On-disk flags are just 16 bits */ - flags = get_be16(&ondisk->flags); + flags = get_be16(flagsp); len = flags & CE_NAMEMASK; if (flags & CE_EXTENDED) { - struct ondisk_cache_entry_extended *ondisk2; int extended_flags; - ondisk2 = (struct ondisk_cache_entry_extended *)ondisk; - extended_flags = get_be16(&ondisk2->flags2) << 16; + extended_flags = get_be16(flagsp + 1) << 16; /* We do not yet understand any bit out of CE_EXTENDED_FLAGS */ if (extended_flags & ~CE_EXTENDED_FLAGS) die(_("unknown index entry format 0x%08x"), extended_flags); flags |= extended_flags; - name = ondisk2->name; + name = (const char *)(flagsp + 2); } else - name = ondisk->name; + name = (const char *)(flagsp + 1); if (expand_name_field) { const unsigned char *cp = (const unsigned char *)name; @@ -1817,7 +1812,9 @@ static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool, ce->ce_flags = flags & ~CE_NAMEMASK; ce->ce_namelen = len; ce->index = 0; - hashcpy(ce->oid.hash, ondisk->sha1); + hashcpy(ce->oid.hash, ondisk->data); + memcpy(ce->name, name, len); + ce->name[len] = '\0'; if (expand_name_field) { if (copy_len) @@ -2154,7 +2151,7 @@ int do_read_index(struct index_state *istate, const char *path, int must_exist) if (mmap_size < sizeof(struct cache_header) + the_hash_algo->rawsz) die(_("%s: index file smaller than expected"), path); - mmap = xmmap(NULL, mmap_size, PROT_READ, MAP_PRIVATE, fd, 0); + mmap = xmmap_gently(NULL, mmap_size, PROT_READ, MAP_PRIVATE, fd, 0); if (mmap == MAP_FAILED) die_errno(_("%s: unable to map index file"), path); close(fd); @@ -2231,6 +2228,16 @@ int do_read_index(struct index_state *istate, const char *path, int must_exist) load_index_extensions(&p); } munmap((void *)mmap, mmap_size); + + /* + * TODO trace2: replace "the_repository" with the actual repo instance + * that is associated with the given "istate". + */ + trace2_data_intmax("index", the_repository, "read/version", + istate->version); + trace2_data_intmax("index", the_repository, "read/cache_nr", + istate->cache_nr); + return istate->cache_nr; unmap: @@ -2262,9 +2269,17 @@ int read_index_from(struct index_state *istate, const char *path, if (istate->initialized) return istate->cache_nr; + /* + * TODO trace2: replace "the_repository" with the actual repo instance + * that is associated with the given "istate". + */ + trace2_region_enter_printf("index", "do_read_index", the_repository, + "%s", path); trace_performance_enter(); ret = do_read_index(istate, path, 0); trace_performance_leave("read cache %s", path); + trace2_region_leave_printf("index", "do_read_index", the_repository, + "%s", path); split_index = istate->split_index; if (!split_index || is_null_oid(&split_index->base_oid)) { @@ -2280,7 +2295,11 @@ int read_index_from(struct index_state *istate, const char *path, base_oid_hex = oid_to_hex(&split_index->base_oid); base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_oid_hex); + trace2_region_enter_printf("index", "shared/do_read_index", + the_repository, "%s", base_path); ret = do_read_index(split_index->base, base_path, 1); + trace2_region_leave_printf("index", "shared/do_read_index", + the_repository, "%s", base_path); if (!oideq(&split_index->base_oid, &split_index->base->oid)) die(_("broken index, expect %s in %s, got %s"), base_oid_hex, base_path, @@ -2318,6 +2337,7 @@ int discard_index(struct index_state *istate) free_name_hash(istate); cache_tree_free(&(istate->cache_tree)); istate->initialized = 0; + istate->fsmonitor_has_run_once = 0; FREE_AND_NULL(istate->cache); istate->cache_alloc = 0; discard_split_index(istate); @@ -2539,6 +2559,8 @@ static void copy_cache_entry_to_ondisk(struct ondisk_cache_entry *ondisk, struct cache_entry *ce) { short flags; + const unsigned hashsz = the_hash_algo->rawsz; + uint16_t *flagsp = (uint16_t *)(ondisk->data + hashsz); ondisk->ctime.sec = htonl(ce->ce_stat_data.sd_ctime.sec); ondisk->mtime.sec = htonl(ce->ce_stat_data.sd_mtime.sec); @@ -2550,15 +2572,13 @@ static void copy_cache_entry_to_ondisk(struct ondisk_cache_entry *ondisk, ondisk->uid = htonl(ce->ce_stat_data.sd_uid); ondisk->gid = htonl(ce->ce_stat_data.sd_gid); ondisk->size = htonl(ce->ce_stat_data.sd_size); - hashcpy(ondisk->sha1, ce->oid.hash); + hashcpy(ondisk->data, ce->oid.hash); flags = ce->ce_flags & ~CE_NAMEMASK; flags |= (ce_namelen(ce) >= CE_NAMEMASK ? CE_NAMEMASK : ce_namelen(ce)); - ondisk->flags = htons(flags); + flagsp[0] = htons(flags); if (ce->ce_flags & CE_EXTENDED) { - struct ondisk_cache_entry_extended *ondisk2; - ondisk2 = (struct ondisk_cache_entry_extended *)ondisk; - ondisk2->flags2 = htons((ce->ce_flags & CE_EXTENDED_FLAGS) >> 16); + flagsp[1] = htons((ce->ce_flags & CE_EXTENDED_FLAGS) >> 16); } } @@ -2577,10 +2597,7 @@ static int ce_write_entry(git_hash_ctx *c, int fd, struct cache_entry *ce, stripped_name = 1; } - if (ce->ce_flags & CE_EXTENDED) - size = offsetof(struct ondisk_cache_entry_extended, name); - else - size = offsetof(struct ondisk_cache_entry, name); + size = offsetof(struct ondisk_cache_entry,data) + ondisk_data_size(ce->ce_flags, 0); if (!previous_name) { int len = ce_namelen(ce); @@ -2738,7 +2755,7 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile, struct cache_entry **cache = istate->cache; int entries = istate->cache_nr; struct stat st; - struct ondisk_cache_entry_extended ondisk; + struct ondisk_cache_entry ondisk; struct strbuf previous_name_buf = STRBUF_INIT, *previous_name; int drop_cache_tree = istate->drop_cache_tree; off_t offset; @@ -2905,7 +2922,8 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile, return -1; } - if (!strip_extensions && istate->split_index) { + if (!strip_extensions && istate->split_index && + !is_null_oid(&istate->split_index->base_oid)) { struct strbuf sb = STRBUF_INIT; err = write_link_extension(&sb, istate) < 0 || @@ -2987,6 +3005,16 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile, istate->timestamp.sec = (unsigned int)st.st_mtime; istate->timestamp.nsec = ST_MTIME_NSEC(st); trace_performance_since(start, "write index, changed mask = %x", istate->cache_changed); + + /* + * TODO trace2: replace "the_repository" with the actual repo instance + * that is associated with the given "istate". + */ + trace2_data_intmax("index", the_repository, "write/version", + istate->version); + trace2_data_intmax("index", the_repository, "write/cache_nr", + istate->cache_nr); + return 0; } @@ -3006,12 +3034,32 @@ static int commit_locked_index(struct lock_file *lk) static int do_write_locked_index(struct index_state *istate, struct lock_file *lock, unsigned flags) { - int ret = do_write_index(istate, lock->tempfile, 0); + int ret; + + /* + * TODO trace2: replace "the_repository" with the actual repo instance + * that is associated with the given "istate". + */ + trace2_region_enter_printf("index", "do_write_index", the_repository, + "%s", lock->tempfile->filename.buf); + ret = do_write_index(istate, lock->tempfile, 0); + trace2_region_leave_printf("index", "do_write_index", the_repository, + "%s", lock->tempfile->filename.buf); + if (ret) return ret; if (flags & COMMIT_LOCK) - return commit_locked_index(lock); - return close_lock_file_gently(lock); + ret = commit_locked_index(lock); + else + ret = close_lock_file_gently(lock); + + run_hook_le(NULL, "post-index-change", + istate->updated_workdir ? "1" : "0", + istate->updated_skipworktree ? "1" : "0", NULL); + istate->updated_workdir = 0; + istate->updated_skipworktree = 0; + + return ret; } static int write_split_index(struct index_state *istate, @@ -3091,7 +3139,13 @@ static int write_shared_index(struct index_state *istate, int ret; move_cache_to_base_index(istate); + + trace2_region_enter_printf("index", "shared/do_write_index", + the_repository, "%s", (*temp)->filename.buf); ret = do_write_index(si->base, *temp, 1); + trace2_region_leave_printf("index", "shared/do_write_index", + the_repository, "%s", (*temp)->filename.buf); + if (ret) return ret; ret = adjust_shared_perm(get_tempfile_path(*temp)); @@ -3200,7 +3254,7 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock, ret = write_split_index(istate, lock, flags); /* Freshen the shared index only if the split-index was written */ - if (!ret && !new_shared_index) { + if (!ret && !new_shared_index && !is_null_oid(&si->base_oid)) { const char *shared_index = git_path("sharedindex.%s", oid_to_hex(&si->base_oid)); freshen_shared_index(shared_index, 1); |