static void cache_free(struct submodule_cache *cache)
{
struct hashmap_iter iter;
struct submodule_entry *entry;
/*
* We iterate over the name hash here to be symmetric with the
* allocation of struct submodule entries. Each is allocated by
* their .gitmodule blob sha1 and submodule name.
*/
hashmap_iter_init(&cache->for_name, &iter);
while ((entry = hashmap_iter_next(&iter)))
free_one_config(entry);
hashmap_free(&cache->for_path, 1);
hashmap_free(&cache->for_name, 1);
}
void fscache_merge(struct fscache *dest)
{
struct hashmap_iter iter;
struct hashmap_entry *e;
struct fscache *cache = fscache_getcache();
/*
* Only do the merge if fscache was enabled and we have a dest
* cache to merge into.
*/
if (!dest) {
fscache_enable(0);
return;
}
if (!cache)
BUG("fscache_merge() called on a thread where fscache has not been initialized");
TlsSetValue(dwTlsIndex, NULL);
trace_printf_key(&trace_fscache, "fscache_merge: lstat %u, opendir %u, "
"total requests/misses %u/%u\n",
cache->lstat_requests, cache->opendir_requests,
cache->fscache_requests, cache->fscache_misses);
/*
* This is only safe because the primary thread we're merging into
* isn't being used so the critical section only needs to prevent
* the the child threads from stomping on each other.
*/
EnterCriticalSection(&fscache_cs);
hashmap_iter_init(&cache->map, &iter);
while ((e = hashmap_iter_next(&iter)))
hashmap_add(&dest->map, e);
mem_pool_combine(dest->mem_pool, cache->mem_pool);
dest->lstat_requests += cache->lstat_requests;
dest->opendir_requests += cache->opendir_requests;
dest->fscache_requests += cache->fscache_requests;
dest->fscache_misses += cache->fscache_misses;
initialized--;
LeaveCriticalSection(&fscache_cs);
free(cache);
}
/*
* Reallocate and reinitialize the array of all attributes (which is used in
* the attribute collection process) in 'check' based on the global dictionary
* of attributes.
*/
static void all_attrs_init(struct attr_hashmap *map, struct attr_check *check)
{
int i;
unsigned int size;
hashmap_lock(map);
size = hashmap_get_size(&map->map);
if (size < check->all_attrs_nr)
BUG("interned attributes shouldn't be deleted");
/*
* If the number of attributes in the global dictionary has increased
* (or this attr_check instance doesn't have an initialized all_attrs
* field), reallocate the provided attr_check instance's all_attrs
* field and fill each entry with its corresponding git_attr.
*/
if (size != check->all_attrs_nr) {
struct attr_hash_entry *e;
struct hashmap_iter iter;
hashmap_iter_init(&map->map, &iter);
REALLOC_ARRAY(check->all_attrs, size);
check->all_attrs_nr = size;
while ((e = hashmap_iter_next(&iter))) {
const struct git_attr *a = e->value;
check->all_attrs[a->attr_nr].attr = a;
}
}
hashmap_unlock(map);
/*
* Re-initialize every entry in check->all_attrs.
* This re-initialization can live outside of the locked region since
* the attribute dictionary is no longer being accessed.
*/
for (i = 0; i < check->all_attrs_nr; i++) {
check->all_attrs[i].value = ATTR__UNKNOWN;
check->all_attrs[i].macro = NULL;
}
}
static int run_dir_diff(const char *extcmd, int symlinks, const char *prefix,
int argc, const char **argv)
{
char tmpdir[PATH_MAX];
struct strbuf info = STRBUF_INIT, lpath = STRBUF_INIT;
struct strbuf rpath = STRBUF_INIT, buf = STRBUF_INIT;
struct strbuf ldir = STRBUF_INIT, rdir = STRBUF_INIT;
struct strbuf wtdir = STRBUF_INIT;
char *lbase_dir, *rbase_dir;
size_t ldir_len, rdir_len, wtdir_len;
const char *workdir, *tmp;
int ret = 0, i;
FILE *fp;
struct hashmap working_tree_dups, submodules, symlinks2;
struct hashmap_iter iter;
struct pair_entry *entry;
struct index_state wtindex;
struct checkout lstate, rstate;
int rc, flags = RUN_GIT_CMD, err = 0;
struct child_process child = CHILD_PROCESS_INIT;
const char *helper_argv[] = { "difftool--helper", NULL, NULL, NULL };
struct hashmap wt_modified, tmp_modified;
int indices_loaded = 0;
workdir = get_git_work_tree();
/* Setup temp directories */
tmp = getenv("TMPDIR");
xsnprintf(tmpdir, sizeof(tmpdir), "%s/git-difftool.XXXXXX", tmp ? tmp : "/tmp");
if (!mkdtemp(tmpdir))
return error("could not create '%s'", tmpdir);
strbuf_addf(&ldir, "%s/left/", tmpdir);
strbuf_addf(&rdir, "%s/right/", tmpdir);
strbuf_addstr(&wtdir, workdir);
if (!wtdir.len || !is_dir_sep(wtdir.buf[wtdir.len - 1]))
strbuf_addch(&wtdir, '/');
mkdir(ldir.buf, 0700);
mkdir(rdir.buf, 0700);
memset(&wtindex, 0, sizeof(wtindex));
memset(&lstate, 0, sizeof(lstate));
lstate.base_dir = lbase_dir = xstrdup(ldir.buf);
lstate.base_dir_len = ldir.len;
lstate.force = 1;
memset(&rstate, 0, sizeof(rstate));
rstate.base_dir = rbase_dir = xstrdup(rdir.buf);
rstate.base_dir_len = rdir.len;
rstate.force = 1;
ldir_len = ldir.len;
rdir_len = rdir.len;
wtdir_len = wtdir.len;
hashmap_init(&working_tree_dups,
(hashmap_cmp_fn)working_tree_entry_cmp, NULL, 0);
hashmap_init(&submodules, (hashmap_cmp_fn)pair_cmp, NULL, 0);
hashmap_init(&symlinks2, (hashmap_cmp_fn)pair_cmp, NULL, 0);
child.no_stdin = 1;
child.git_cmd = 1;
child.use_shell = 0;
child.clean_on_exit = 1;
child.dir = prefix;
child.out = -1;
argv_array_pushl(&child.args, "diff", "--raw", "--no-abbrev", "-z",
NULL);
for (i = 0; i < argc; i++)
argv_array_push(&child.args, argv[i]);
if (start_command(&child))
die("could not obtain raw diff");
fp = xfdopen(child.out, "r");
/* Build index info for left and right sides of the diff */
i = 0;
while (!strbuf_getline_nul(&info, fp)) {
int lmode, rmode;
struct object_id loid, roid;
char status;
const char *src_path, *dst_path;
if (starts_with(info.buf, "::"))
die(N_("combined diff formats('-c' and '--cc') are "
"not supported in\n"
"directory diff mode('-d' and '--dir-diff')."));
if (parse_index_info(info.buf, &lmode, &rmode, &loid, &roid,
&status))
break;
if (strbuf_getline_nul(&lpath, fp))
break;
src_path = lpath.buf;
i++;
if (status != 'C' && status != 'R') {
dst_path = src_path;
} else {
if (strbuf_getline_nul(&rpath, fp))
break;
dst_path = rpath.buf;
}
if (S_ISGITLINK(lmode) || S_ISGITLINK(rmode)) {
strbuf_reset(&buf);
strbuf_addf(&buf, "Subproject commit %s",
oid_to_hex(&loid));
add_left_or_right(&submodules, src_path, buf.buf, 0);
strbuf_reset(&buf);
strbuf_addf(&buf, "Subproject commit %s",
oid_to_hex(&roid));
if (!oidcmp(&loid, &roid))
strbuf_addstr(&buf, "-dirty");
add_left_or_right(&submodules, dst_path, buf.buf, 1);
continue;
}
if (S_ISLNK(lmode)) {
char *content = get_symlink(&loid, src_path);
add_left_or_right(&symlinks2, src_path, content, 0);
free(content);
}
if (S_ISLNK(rmode)) {
char *content = get_symlink(&roid, dst_path);
add_left_or_right(&symlinks2, dst_path, content, 1);
free(content);
}
if (lmode && status != 'C') {
if (checkout_path(lmode, &loid, src_path, &lstate)) {
ret = error("could not write '%s'", src_path);
goto finish;
}
}
if (rmode && !S_ISLNK(rmode)) {
struct working_tree_entry *entry;
/* Avoid duplicate working_tree entries */
FLEX_ALLOC_STR(entry, path, dst_path);
hashmap_entry_init(entry, strhash(dst_path));
if (hashmap_get(&working_tree_dups, entry, NULL)) {
free(entry);
continue;
}
hashmap_add(&working_tree_dups, entry);
if (!use_wt_file(workdir, dst_path, &roid)) {
if (checkout_path(rmode, &roid, dst_path,
&rstate)) {
ret = error("could not write '%s'",
dst_path);
goto finish;
}
} else if (!is_null_oid(&roid)) {
/*
* Changes in the working tree need special
* treatment since they are not part of the
* index.
*/
struct cache_entry *ce2 =
make_cache_entry(rmode, roid.hash,
dst_path, 0, 0);
add_index_entry(&wtindex, ce2,
ADD_CACHE_JUST_APPEND);
add_path(&rdir, rdir_len, dst_path);
if (ensure_leading_directories(rdir.buf)) {
ret = error("could not create "
"directory for '%s'",
dst_path);
goto finish;
}
add_path(&wtdir, wtdir_len, dst_path);
if (symlinks) {
if (symlink(wtdir.buf, rdir.buf)) {
ret = error_errno("could not symlink '%s' to '%s'", wtdir.buf, rdir.buf);
goto finish;
}
} else {
struct stat st;
if (stat(wtdir.buf, &st))
st.st_mode = 0644;
if (copy_file(rdir.buf, wtdir.buf,
st.st_mode)) {
ret = error("could not copy '%s' to '%s'", wtdir.buf, rdir.buf);
goto finish;
}
}
}
}
}
fclose(fp);
fp = NULL;
if (finish_command(&child)) {
ret = error("error occurred running diff --raw");
goto finish;
}
if (!i)
goto finish;
/*
* Changes to submodules require special treatment.This loop writes a
* temporary file to both the left and right directories to show the
* change in the recorded SHA1 for the submodule.
*/
hashmap_iter_init(&submodules, &iter);
while ((entry = hashmap_iter_next(&iter))) {
if (*entry->left) {
add_path(&ldir, ldir_len, entry->path);
ensure_leading_directories(ldir.buf);
write_file(ldir.buf, "%s", entry->left);
}
if (*entry->right) {
add_path(&rdir, rdir_len, entry->path);
ensure_leading_directories(rdir.buf);
write_file(rdir.buf, "%s", entry->right);
}
}
/*
* Symbolic links require special treatment.The standard "git diff"
* shows only the link itself, not the contents of the link target.
* This loop replicates that behavior.
*/
hashmap_iter_init(&symlinks2, &iter);
while ((entry = hashmap_iter_next(&iter))) {
if (*entry->left) {
add_path(&ldir, ldir_len, entry->path);
ensure_leading_directories(ldir.buf);
write_file(ldir.buf, "%s", entry->left);
}
if (*entry->right) {
add_path(&rdir, rdir_len, entry->path);
ensure_leading_directories(rdir.buf);
write_file(rdir.buf, "%s", entry->right);
}
}
strbuf_release(&buf);
strbuf_setlen(&ldir, ldir_len);
helper_argv[1] = ldir.buf;
strbuf_setlen(&rdir, rdir_len);
helper_argv[2] = rdir.buf;
if (extcmd) {
helper_argv[0] = extcmd;
flags = 0;
} else
setenv("GIT_DIFFTOOL_DIRDIFF", "true", 1);
rc = run_command_v_opt(helper_argv, flags);
/*
* If the diff includes working copy files and those
* files were modified during the diff, then the changes
* should be copied back to the working tree.
* Do not copy back files when symlinks are used and the
* external tool did not replace the original link with a file.
*
* These hashes are loaded lazily since they aren't needed
* in the common case of --symlinks and the difftool updating
* files through the symlink.
*/
hashmap_init(&wt_modified, (hashmap_cmp_fn)path_entry_cmp,
NULL, wtindex.cache_nr);
hashmap_init(&tmp_modified, (hashmap_cmp_fn)path_entry_cmp,
NULL, wtindex.cache_nr);
for (i = 0; i < wtindex.cache_nr; i++) {
struct hashmap_entry dummy;
const char *name = wtindex.cache[i]->name;
struct stat st;
add_path(&rdir, rdir_len, name);
if (lstat(rdir.buf, &st))
continue;
if ((symlinks && S_ISLNK(st.st_mode)) || !S_ISREG(st.st_mode))
continue;
if (!indices_loaded) {
static struct lock_file lock;
strbuf_reset(&buf);
strbuf_addf(&buf, "%s/wtindex", tmpdir);
if (hold_lock_file_for_update(&lock, buf.buf, 0) < 0 ||
write_locked_index(&wtindex, &lock, COMMIT_LOCK)) {
ret = error("could not write %s", buf.buf);
rollback_lock_file(&lock);
goto finish;
}
changed_files(&wt_modified, buf.buf, workdir);
strbuf_setlen(&rdir, rdir_len);
changed_files(&tmp_modified, buf.buf, rdir.buf);
add_path(&rdir, rdir_len, name);
indices_loaded = 1;
}
hashmap_entry_init(&dummy, strhash(name));
if (hashmap_get(&tmp_modified, &dummy, name)) {
add_path(&wtdir, wtdir_len, name);
if (hashmap_get(&wt_modified, &dummy, name)) {
warning(_("both files modified: '%s' and '%s'."),
wtdir.buf, rdir.buf);
warning(_("working tree file has been left."));
warning("%s", "");
err = 1;
} else if (unlink(wtdir.buf) ||
copy_file(wtdir.buf, rdir.buf, st.st_mode))
warning_errno(_("could not copy '%s' to '%s'"),
rdir.buf, wtdir.buf);
}
}
if (err) {
warning(_("temporary files exist in '%s'."), tmpdir);
warning(_("you may want to cleanup or recover these."));
exit(1);
} else
exit_cleanup(tmpdir, rc);
finish:
if (fp)
fclose(fp);
free(lbase_dir);
free(rbase_dir);
strbuf_release(&ldir);
strbuf_release(&rdir);
strbuf_release(&wtdir);
strbuf_release(&buf);
return ret;
}
/*
* Read stdin line by line and print result of commands to stdout:
*
* hash key -> strhash(key) memhash(key) strihash(key) memihash(key)
* put key value -> NULL / old value
* get key -> NULL / value
* remove key -> NULL / old value
* iterate -> key1 value1\nkey2 value2\n...
* size -> tablesize numentries
*
* perfhashmap method rounds -> test hashmap.[ch] performance
*/
int main(int argc, char *argv[])
{
char line[1024];
struct hashmap map;
int icase;
/* init hash map */
icase = argc > 1 && !strcmp("ignorecase", argv[1]);
hashmap_init(&map, (hashmap_cmp_fn) (icase ? test_entry_cmp_icase
: test_entry_cmp), 0);
/* process commands from stdin */
while (fgets(line, sizeof(line), stdin)) {
char *cmd, *p1 = NULL, *p2 = NULL;
int l1 = 0, l2 = 0, hash = 0;
struct test_entry *entry;
/* break line into command and up to two parameters */
cmd = strtok(line, DELIM);
/* ignore empty lines */
if (!cmd || *cmd == '#')
continue;
p1 = strtok(NULL, DELIM);
if (p1) {
l1 = strlen(p1);
hash = icase ? strihash(p1) : strhash(p1);
p2 = strtok(NULL, DELIM);
if (p2)
l2 = strlen(p2);
}
if (!strcmp("hash", cmd) && l1) {
/* print results of different hash functions */
printf("%u %u %u %u\n", strhash(p1), memhash(p1, l1),
strihash(p1), memihash(p1, l1));
} else if (!strcmp("add", cmd) && l1 && l2) {
/* create entry with key = p1, value = p2 */
entry = alloc_test_entry(hash, p1, l1, p2, l2);
/* add to hashmap */
hashmap_add(&map, entry);
} else if (!strcmp("put", cmd) && l1 && l2) {
/* create entry with key = p1, value = p2 */
entry = alloc_test_entry(hash, p1, l1, p2, l2);
/* add / replace entry */
entry = hashmap_put(&map, entry);
/* print and free replaced entry, if any */
puts(entry ? get_value(entry) : "NULL");
free(entry);
} else if (!strcmp("get", cmd) && l1) {
/* lookup entry in hashmap */
entry = hashmap_get_from_hash(&map, hash, p1);
/* print result */
if (!entry)
puts("NULL");
while (entry) {
puts(get_value(entry));
entry = hashmap_get_next(&map, entry);
}
} else if (!strcmp("remove", cmd) && l1) {
/* setup static key */
struct hashmap_entry key;
hashmap_entry_init(&key, hash);
/* remove entry from hashmap */
entry = hashmap_remove(&map, &key, p1);
/* print result and free entry*/
puts(entry ? get_value(entry) : "NULL");
free(entry);
} else if (!strcmp("iterate", cmd)) {
struct hashmap_iter iter;
hashmap_iter_init(&map, &iter);
while ((entry = hashmap_iter_next(&iter)))
printf("%s %s\n", entry->key, get_value(entry));
} else if (!strcmp("size", cmd)) {
/* print table sizes */
printf("%u %u\n", map.tablesize, map.size);
} else if (!strcmp("intern", cmd) && l1) {
/* test that strintern works */
const char *i1 = strintern(p1);
const char *i2 = strintern(p1);
if (strcmp(i1, p1))
printf("strintern(%s) returns %s\n", p1, i1);
else if (i1 == p1)
printf("strintern(%s) returns input pointer\n", p1);
else if (i1 != i2)
printf("strintern(%s) != strintern(%s)", i1, i2);
else
printf("%s\n", i1);
} else if (!strcmp("perfhashmap", cmd) && l1 && l2) {
perf_hashmap(atoi(p1), atoi(p2));
} else {
printf("Unknown command %s\n", cmd);
}
}
hashmap_free(&map, 1);
return 0;
}
/* This does a lookup of a submodule configuration by name or by path
* (key) with on-demand reading of the appropriate .gitmodules from
* revisions.
*/
static const struct submodule *config_from(struct submodule_cache *cache,
const unsigned char *commit_sha1, const char *key,
enum lookup_type lookup_type)
{
struct strbuf rev = STRBUF_INIT;
unsigned long config_size;
char *config;
unsigned char sha1[20];
enum object_type type;
const struct submodule *submodule = NULL;
struct parse_config_parameter parameter;
/*
* If any parameter except the cache is a NULL pointer just
* return the first submodule. Can be used to check whether
* there are any submodules parsed.
*/
if (!commit_sha1 || !key) {
struct hashmap_iter iter;
struct submodule_entry *entry;
hashmap_iter_init(&cache->for_name, &iter);
entry = hashmap_iter_next(&iter);
if (!entry)
return NULL;
return entry->config;
}
if (!gitmodule_sha1_from_commit(commit_sha1, sha1))
return NULL;
switch (lookup_type) {
case lookup_name:
submodule = cache_lookup_name(cache, sha1, key);
break;
case lookup_path:
submodule = cache_lookup_path(cache, sha1, key);
break;
}
if (submodule)
return submodule;
config = read_sha1_file(sha1, &type, &config_size);
if (!config)
return NULL;
if (type != OBJ_BLOB) {
free(config);
return NULL;
}
/* fill the submodule config into the cache */
parameter.cache = cache;
parameter.commit_sha1 = commit_sha1;
parameter.gitmodules_sha1 = sha1;
parameter.overwrite = 0;
git_config_from_buf(parse_config, rev.buf, config, config_size,
¶meter);
free(config);
switch (lookup_type) {
case lookup_name:
return cache_lookup_name(cache, sha1, key);
case lookup_path:
return cache_lookup_path(cache, sha1, key);
default:
return NULL;
}
}