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-rw-r--r--read-cache.c170
1 files changed, 112 insertions, 58 deletions
diff --git a/read-cache.c b/read-cache.c
index 0e0c93edc9..4dd22f4f6e 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);
}
}
@@ -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;
@@ -1422,7 +1432,7 @@ 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;
}
@@ -1437,7 +1447,7 @@ 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
@@ -1634,39 +1644,24 @@ 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;
@@ -1740,6 +1735,8 @@ 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;
/*
@@ -1752,22 +1749,20 @@ 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;
@@ -1806,7 +1801,9 @@ 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)
@@ -2040,7 +2037,7 @@ static void *load_cache_entries_thread(void *_data)
}
static unsigned long load_cache_entries_threaded(struct index_state *istate, const char *mmap, size_t mmap_size,
- unsigned long src_offset, int nr_threads, struct index_entry_offset_table *ieot)
+ int nr_threads, struct index_entry_offset_table *ieot)
{
int i, offset, ieot_blocks, ieot_start, err;
struct load_cache_entries_thread_data *data;
@@ -2201,7 +2198,7 @@ int do_read_index(struct index_state *istate, const char *path, int must_exist)
ieot = read_ieot_extension(mmap, mmap_size, extension_offset);
if (ieot) {
- src_offset += load_cache_entries_threaded(istate, mmap, mmap_size, src_offset, nr_threads, ieot);
+ src_offset += load_cache_entries_threaded(istate, mmap, mmap_size, nr_threads, ieot);
free(ieot);
} else {
src_offset += load_all_cache_entries(istate, mmap, mmap_size, src_offset);
@@ -2220,6 +2217,16 @@ 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:
@@ -2251,9 +2258,17 @@ 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)) {
@@ -2269,7 +2284,11 @@ 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,
@@ -2307,6 +2326,7 @@ 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);
@@ -2528,6 +2548,8 @@ 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);
@@ -2539,15 +2561,13 @@ 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);
}
}
@@ -2566,10 +2586,7 @@ 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);
@@ -2727,7 +2744,7 @@ 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;
@@ -2894,7 +2911,8 @@ 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 ||
@@ -2976,6 +2994,16 @@ 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;
}
@@ -2995,12 +3023,32 @@ 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,
@@ -3080,7 +3128,13 @@ 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));
@@ -3189,7 +3243,7 @@ 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 22:27:54 +0000