#include "progress.h"
#include "refs.h"
-#ifdef THREADED_DELTA_SEARCH
+#ifndef NO_PTHREADS
#include "thread-utils.h"
#include <pthread.h>
#endif
-static const char pack_usage[] = "\
-git pack-objects [{ -q | --progress | --all-progress }] \n\
- [--max-pack-size=N] [--local] [--incremental] \n\
- [--window=N] [--window-memory=N] [--depth=N] \n\
- [--no-reuse-delta] [--no-reuse-object] [--delta-base-offset] \n\
- [--threads=N] [--non-empty] [--revs [--unpacked | --all]*] [--reflog] \n\
- [--stdout | base-name] [--include-tag] \n\
- [--keep-unreachable | --unpack-unreachable] \n\
- [<ref-list | <object-list]";
+static const char pack_usage[] =
+ "git pack-objects [{ -q | --progress | --all-progress }]\n"
+ " [--all-progress-implied]\n"
+ " [--max-pack-size=N] [--local] [--incremental]\n"
+ " [--window=N] [--window-memory=N] [--depth=N]\n"
+ " [--no-reuse-delta] [--no-reuse-object] [--delta-base-offset]\n"
+ " [--threads=N] [--non-empty] [--revs [--unpacked | --all]*]\n"
+ " [--reflog] [--stdout | base-name] [--include-tag]\n"
+ " [--keep-unreachable | --unpack-unreachable \n"
+ " [<ref-list | <object-list]";
struct object_entry {
struct pack_idx_entry idx;
static const char *base_name;
static int progress = 1;
static int window = 10;
-static uint32_t pack_size_limit, pack_size_limit_cfg;
+static unsigned long pack_size_limit, pack_size_limit_cfg;
static int depth = 50;
-static int delta_search_threads = 1;
+static int delta_search_threads;
static int pack_to_stdout;
static int num_preferred_base;
static struct progress *progress_state;
static int pack_compression_seen;
static unsigned long delta_cache_size = 0;
-static unsigned long max_delta_cache_size = 0;
+static unsigned long max_delta_cache_size = 256 * 1024 * 1024;
static unsigned long cache_max_small_delta_size = 1000;
static unsigned long window_memory_limit = 0;
type = entry->type;
- /* write limit if limited packsize and not first object */
+ /* apply size limit if limited packsize and not first object */
if (!pack_size_limit || !nr_written)
limit = 0;
else if (pack_size_limit <= write_offset)
die("unable to read %s", sha1_to_hex(entry->idx.sha1));
/*
* make sure no cached delta data remains from a
- * previous attempt before a pack split occured.
+ * previous attempt before a pack split occurred.
*/
free(entry->delta_data);
entry->delta_data = NULL;
/* offset is non zero if object is written already. */
if (e->idx.offset || e->preferred_base)
- return 1;
+ return -1;
- /* if we are deltified, write out base object first. */
- if (e->delta && !write_one(f, e->delta, offset))
- return 0;
+ /*
+ * If we are deltified, attempt to write out base object first.
+ * If that fails due to the pack size limit then the current
+ * object might still possibly fit undeltified within that limit.
+ */
+ if (e->delta)
+ write_one(f, e->delta, offset);
e->idx.offset = *offset;
size = write_object(f, e, *offset);
sha1write(f, &hdr, sizeof(hdr));
offset = sizeof(hdr);
nr_written = 0;
- for (; i < nr_objects; i++) {
- if (!write_one(f, objects + i, &offset))
- break;
- display_progress(progress_state, written);
- }
+ for (i = 0; i < nr_objects; i++)
+ if (write_one(f, objects + i, &offset) == 1)
+ display_progress(progress_state, written);
/*
* Did we write the wrong # entries in the header?
if (!pack_to_stdout) {
mode_t mode = umask(0);
struct stat st;
- char *idx_tmp_name, tmpname[PATH_MAX];
+ const char *idx_tmp_name;
+ char tmpname[PATH_MAX];
umask(mode);
mode = 0444 & ~mode;
base_name, sha1_to_hex(sha1));
free_pack_by_name(tmpname);
if (adjust_perm(pack_tmp_name, mode))
- die("unable to make temporary pack file readable: %s",
- strerror(errno));
+ die_errno("unable to make temporary pack file readable");
if (rename(pack_tmp_name, tmpname))
- die("unable to rename temporary pack file: %s",
- strerror(errno));
+ die_errno("unable to rename temporary pack file");
/*
* Packs are runtime accessed in their mtime
snprintf(tmpname, sizeof(tmpname), "%s-%s.idx",
base_name, sha1_to_hex(sha1));
if (adjust_perm(idx_tmp_name, mode))
- die("unable to make temporary index file readable: %s",
- strerror(errno));
+ die_errno("unable to make temporary index file readable");
if (rename(idx_tmp_name, tmpname))
- die("unable to rename temporary index file: %s",
- strerror(errno));
+ die_errno("unable to rename temporary index file");
- free(idx_tmp_name);
+ free((void *) idx_tmp_name);
free(pack_tmp_name);
puts(sha1_to_hex(sha1));
}
written_list[j]->offset = (off_t)-1;
}
nr_remaining -= nr_written;
- } while (nr_remaining && i < nr_objects);
+ } while (nr_remaining);
free(written_list);
stop_progress(&progress_state);
if (written != nr_result)
die("wrote %"PRIu32" objects while expecting %"PRIu32,
written, nr_result);
- /*
- * We have scanned through [0 ... i). Since we have written
- * the correct number of objects, the remaining [i ... nr_objects)
- * items must be either already written (due to out-of-order delta base)
- * or a preferred base. Count those which are neither and complain if any.
- */
- for (j = 0; i < nr_objects; i++) {
- struct object_entry *e = objects + i;
- j += !e->idx.offset && !e->preferred_base;
- }
- if (j)
- die("wrote %"PRIu32" objects as expected but %"PRIu32
- " unwritten", written, j);
}
static int locate_object_entry_hash(const unsigned char *sha1)
static unsigned name_hash(const char *name)
{
- unsigned char c;
- unsigned hash = 0;
+ unsigned c, hash = 0;
if (!name)
return 0;
static struct git_attr *attr_delta;
if (!attr_delta)
- attr_delta = git_attr("delta", 5);
+ attr_delta = git_attr("delta");
check[0].attr = attr_delta;
}
it->pcache.tree_size = size;
}
+static void cleanup_preferred_base(void)
+{
+ struct pbase_tree *it;
+ unsigned i;
+
+ it = pbase_tree;
+ pbase_tree = NULL;
+ while (it) {
+ struct pbase_tree *this = it;
+ it = this->next;
+ free(this->pcache.tree_data);
+ free(this);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(pbase_tree_cache); i++) {
+ if (!pbase_tree_cache[i])
+ continue;
+ free(pbase_tree_cache[i]->tree_data);
+ free(pbase_tree_cache[i]);
+ pbase_tree_cache[i] = NULL;
+ }
+
+ free(done_pbase_paths);
+ done_pbase_paths = NULL;
+ done_pbase_paths_num = done_pbase_paths_alloc = 0;
+}
+
static void check_object(struct object_entry *entry)
{
if (entry->in_pack) {
return 0;
}
-#ifdef THREADED_DELTA_SEARCH
+#ifndef NO_PTHREADS
-static pthread_mutex_t read_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t read_mutex;
#define read_lock() pthread_mutex_lock(&read_mutex)
#define read_unlock() pthread_mutex_unlock(&read_mutex)
-static pthread_mutex_t cache_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t cache_mutex;
#define cache_lock() pthread_mutex_lock(&cache_mutex)
#define cache_unlock() pthread_mutex_unlock(&cache_mutex)
-static pthread_mutex_t progress_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t progress_mutex;
#define progress_lock() pthread_mutex_lock(&progress_mutex)
#define progress_unlock() pthread_mutex_unlock(&progress_mutex)
/*
* Handle memory allocation outside of the cache
* accounting lock. Compiler will optimize the strangeness
- * away when THREADED_DELTA_SEARCH is not defined.
+ * away when NO_PTHREADS is defined.
*/
free(trg_entry->delta_data);
cache_lock();
free(array);
}
-#ifdef THREADED_DELTA_SEARCH
+#ifndef NO_PTHREADS
/*
* The main thread waits on the condition that (at least) one of the workers
unsigned *processed;
};
-static pthread_cond_t progress_cond = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t progress_cond;
+
+/*
+ * Mutex and conditional variable can't be statically-initialized on Windows.
+ */
+static void init_threaded_search(void)
+{
+ pthread_mutex_init(&read_mutex, NULL);
+ pthread_mutex_init(&cache_mutex, NULL);
+ pthread_mutex_init(&progress_mutex, NULL);
+ pthread_cond_init(&progress_cond, NULL);
+}
+
+static void cleanup_threaded_search(void)
+{
+ pthread_cond_destroy(&progress_cond);
+ pthread_mutex_destroy(&read_mutex);
+ pthread_mutex_destroy(&cache_mutex);
+ pthread_mutex_destroy(&progress_mutex);
+}
static void *threaded_find_deltas(void *arg)
{
static void ll_find_deltas(struct object_entry **list, unsigned list_size,
int window, int depth, unsigned *processed)
{
- struct thread_params p[delta_search_threads];
+ struct thread_params *p;
int i, ret, active_threads = 0;
+ init_threaded_search();
+
+ if (!delta_search_threads) /* --threads=0 means autodetect */
+ delta_search_threads = online_cpus();
if (delta_search_threads <= 1) {
find_deltas(list, &list_size, window, depth, processed);
+ cleanup_threaded_search();
return;
}
+ if (progress > pack_to_stdout)
+ fprintf(stderr, "Delta compression using up to %d threads.\n",
+ delta_search_threads);
+ p = xcalloc(delta_search_threads, sizeof(*p));
/* Partition the work amongst work threads. */
for (i = 0; i < delta_search_threads; i++) {
unsigned sub_size = list_size / (delta_search_threads - i);
+ /* don't use too small segments or no deltas will be found */
+ if (sub_size < 2*window && i+1 < delta_search_threads)
+ sub_size = 0;
+
p[i].window = window;
p[i].depth = depth;
p[i].processed = processed;
active_threads--;
}
}
+ cleanup_threaded_search();
+ free(p);
}
#else
static int git_pack_config(const char *k, const char *v, void *cb)
{
- if(!strcmp(k, "pack.window")) {
+ if (!strcmp(k, "pack.window")) {
window = git_config_int(k, v);
return 0;
}
if (delta_search_threads < 0)
die("invalid number of threads specified (%d)",
delta_search_threads);
-#ifndef THREADED_DELTA_SEARCH
+#ifdef NO_PTHREADS
if (delta_search_threads != 1)
warning("no threads support, ignoring %s", k);
#endif
if (!ferror(stdin))
die("fgets returned NULL, not EOF, not error!");
if (errno != EINTR)
- die("fgets: %s", strerror(errno));
+ die_errno("fgets");
clearerr(stdin);
continue;
}
#define OBJECT_ADDED (1u<<20)
-static void show_commit(struct commit *commit)
+static void show_commit(struct commit *commit, void *data)
{
add_object_entry(commit->object.sha1, OBJ_COMMIT, NULL, 0);
commit->object.flags |= OBJECT_ADDED;
}
-static void show_object(struct object_array_entry *p)
+static void show_object(struct object *obj, const struct name_path *path, const char *last)
{
- add_preferred_base_object(p->name);
- add_object_entry(p->item->sha1, p->item->type, p->name, 0);
- p->item->flags |= OBJECT_ADDED;
- free((char *)p->name);
- p->name = NULL;
+ char *name = path_name(path, last);
+
+ add_preferred_base_object(name);
+ add_object_entry(obj->sha1, obj->type, name, 0);
+ obj->flags |= OBJECT_ADDED;
+
+ /*
+ * We will have generated the hash from the name,
+ * but not saved a pointer to it - we can free it
+ */
+ free((char *)name);
}
static void show_edge(struct commit *commit)
if (prepare_revision_walk(&revs))
die("revision walk setup failed");
mark_edges_uninteresting(revs.commits, &revs, show_edge);
- traverse_commit_list(&revs, show_commit, show_object);
+ traverse_commit_list(&revs, show_commit, show_object, NULL);
if (keep_unreachable)
add_objects_in_unpacked_packs(&revs);
{
int use_internal_rev_list = 0;
int thin = 0;
+ int all_progress_implied = 0;
uint32_t i;
const char **rp_av;
int rp_ac_alloc = 64;
int rp_ac;
+ read_replace_refs = 0;
+
rp_av = xcalloc(rp_ac_alloc, sizeof(*rp_av));
rp_av[0] = "pack-objects";
continue;
}
if (!prefixcmp(arg, "--max-pack-size=")) {
- char *end;
pack_size_limit_cfg = 0;
- pack_size_limit = strtoul(arg+16, &end, 0) * 1024 * 1024;
- if (!arg[16] || *end)
+ if (!git_parse_ulong(arg+16, &pack_size_limit))
usage(pack_usage);
continue;
}
delta_search_threads = strtoul(arg+10, &end, 0);
if (!arg[10] || *end || delta_search_threads < 0)
usage(pack_usage);
-#ifndef THREADED_DELTA_SEARCH
+#ifdef NO_PTHREADS
if (delta_search_threads != 1)
warning("no threads support, "
"ignoring %s", arg);
progress = 2;
continue;
}
+ if (!strcmp("--all-progress-implied", arg)) {
+ all_progress_implied = 1;
+ continue;
+ }
if (!strcmp("-q", arg)) {
progress = 0;
continue;
die("bad %s", arg);
continue;
}
+ if (!strcmp(arg, "--keep-true-parents")) {
+ grafts_replace_parents = 0;
+ continue;
+ }
usage(pack_usage);
}
if (!pack_to_stdout && !pack_size_limit)
pack_size_limit = pack_size_limit_cfg;
-
if (pack_to_stdout && pack_size_limit)
die("--max-pack-size cannot be used to build a pack for transfer.");
+ if (pack_size_limit && pack_size_limit < 1024*1024) {
+ warning("minimum pack size limit is 1 MiB");
+ pack_size_limit = 1024*1024;
+ }
if (!pack_to_stdout && thin)
die("--thin cannot be used to build an indexable pack.");
if (keep_unreachable && unpack_unreachable)
die("--keep-unreachable and --unpack-unreachable are incompatible.");
-#ifdef THREADED_DELTA_SEARCH
- if (!delta_search_threads) /* --threads=0 means autodetect */
- delta_search_threads = online_cpus();
-#endif
+ if (progress && all_progress_implied)
+ progress = 2;
prepare_packed_git();
rp_av[rp_ac] = NULL;
get_object_list(rp_ac, rp_av);
}
+ cleanup_preferred_base();
if (include_tag && nr_result)
for_each_ref(add_ref_tag, NULL);
stop_progress(&progress_state);
projects / git.git / blobdiff