#include "csum-file.h"
#include "diff.h"
#include <sys/time.h>
+#include <signal.h>
static const char pack_usage[] = "git-pack-objects [-q] [--no-reuse-delta] [--non-empty] [--local] [--incremental] [--window=N] [--depth=N] {--stdout | base-name} < object-list";
static const char *base_name;
static unsigned char pack_file_sha1[20];
static int progress = 1;
+static volatile int progress_update = 0;
/*
* The object names in objects array are hashed with this hashtable,
static int pack_revindex_ix(struct packed_git *p)
{
- unsigned int ui = (unsigned int) p;
+ unsigned long ui = (unsigned long)p;
int i;
ui = ui ^ (ui >> 16); /* defeat structure alignment */
if (!otherbuf)
die("unable to read %s", sha1_to_hex(entry->delta->sha1));
delta_buf = diff_delta(otherbuf, othersize,
- buf, size, &delta_size, 0);
+ buf, size, &delta_size, 0, NULL);
if (!delta_buf || delta_size != entry->delta_size)
die("delta size changed");
free(buf);
struct sha1file *f;
unsigned long offset;
struct pack_header hdr;
+ unsigned last_percent = 999;
+ int do_progress = 0;
if (!base_name)
f = sha1fd(1, "<stdout>");
- else
+ else {
f = sha1create("%s-%s.%s", base_name,
sha1_to_hex(object_list_sha1), "pack");
+ do_progress = progress;
+ }
+ if (do_progress)
+ fprintf(stderr, "Writing %d objects.\n", nr_result);
+
hdr.hdr_signature = htonl(PACK_SIGNATURE);
hdr.hdr_version = htonl(PACK_VERSION);
hdr.hdr_entries = htonl(nr_result);
sha1write(f, &hdr, sizeof(hdr));
offset = sizeof(hdr);
- for (i = 0; i < nr_objects; i++)
+ if (!nr_result)
+ goto done;
+ for (i = 0; i < nr_objects; i++) {
offset = write_one(f, objects + i, offset);
-
+ if (do_progress) {
+ unsigned percent = written * 100 / nr_result;
+ if (progress_update || percent != last_percent) {
+ fprintf(stderr, "%4u%% (%u/%u) done\r",
+ percent, written, nr_result);
+ progress_update = 0;
+ last_percent = percent;
+ }
+ }
+ }
+ if (do_progress)
+ fputc('\n', stderr);
+ done:
sha1close(f, pack_file_sha1, 1);
}
int len;
};
+#define DIRBITS 12
+
static unsigned name_hash(struct name_path *path, const char *name)
{
struct name_path *p = path;
const char *n = name + strlen(name);
- unsigned hash = 0;
+ unsigned hash = 0, name_hash = 0, name_done = 0;
if (n != name && n[-1] == '\n')
n--;
while (name <= --n) {
unsigned char c = *n;
+ if (c == '/' && !name_done) {
+ name_hash = hash;
+ name_done = 1;
+ hash = 0;
+ }
hash = hash * 11 + c;
}
+ if (!name_done) {
+ name_hash = hash;
+ hash = 0;
+ }
for (p = path; p; p = p->up) {
hash = hash * 11 + '/';
n = p->elem + p->len;
hash = hash * 11 + c;
}
}
+ /*
+ * Make sure "Makefile" and "t/Makefile" are hashed separately
+ * but close enough.
+ */
+ hash = (name_hash<<DIRBITS) | (hash & ((1U<<DIRBITS )-1));
+
+ if (0) { /* debug */
+ n = name + strlen(name);
+ if (n != name && n[-1] == '\n')
+ n--;
+ while (name <= --n)
+ fputc(*n, stderr);
+ for (p = path; p; p = p->up) {
+ fputc('/', stderr);
+ n = p->elem + p->len;
+ while (p->elem <= --n)
+ fputc(*n, stderr);
+ }
+ fprintf(stderr, "\t%08x\n", hash);
+ }
return hash;
}
status = 1;
already_added:
+ if (progress_update) {
+ fprintf(stderr, "Counting objects...%d\r", nr_objects);
+ progress_update = 0;
+ }
if (exclude)
entry->preferred_base = 1;
else {
prepare_pack_ix();
for (i = 0, entry = objects; i < nr_objects; i++, entry++)
check_object(entry);
- for (i = 0, entry = objects; i < nr_objects; i++, entry++)
- if (!entry->delta && entry->delta_child)
- entry->delta_limit =
- check_delta_limit(entry, 1);
+
+ if (nr_objects == nr_result) {
+ /*
+ * Depth of objects that depend on the entry -- this
+ * is subtracted from depth-max to break too deep
+ * delta chain because of delta data reusing.
+ * However, we loosen this restriction when we know we
+ * are creating a thin pack -- it will have to be
+ * expanded on the other end anyway, so do not
+ * artificially cut the delta chain and let it go as
+ * deep as it wants.
+ */
+ for (i = 0, entry = objects; i < nr_objects; i++, entry++)
+ if (!entry->delta && entry->delta_child)
+ entry->delta_limit =
+ check_delta_limit(entry, 1);
+ }
}
typedef int (*entry_sort_t)(const struct object_entry *, const struct object_entry *);
return memcmp(a->sha1, b->sha1, 20);
}
-static struct object_entry **create_final_object_list()
+static struct object_entry **create_final_object_list(void)
{
struct object_entry **list;
int i, j;
struct unpacked {
struct object_entry *entry;
void *data;
+ void **delta_index;
};
/*
}
size = cur_entry->size;
- if (size < 50)
- return -1;
oldsize = old_entry->size;
sizediff = oldsize > size ? oldsize - size : size - oldsize;
- if (sizediff > size / 8)
+
+ if (size < 50)
return -1;
if (old_entry->depth >= max_depth)
return 0;
if (sizediff >= max_size)
return -1;
delta_buf = diff_delta(old->data, oldsize,
- cur->data, size, &delta_size, max_size);
+ cur->data, size, &delta_size,
+ max_size, old->delta_index);
if (!delta_buf)
return 0;
cur_entry->delta = old_entry;
return 0;
}
+static void progress_interval(int signum)
+{
+ signal(SIGALRM, progress_interval);
+ progress_update = 1;
+}
+
static void find_deltas(struct object_entry **list, int window, int depth)
{
int i, idx;
unsigned int array_size = window * sizeof(struct unpacked);
struct unpacked *array = xmalloc(array_size);
- int eye_candy;
+ unsigned processed = 0;
+ unsigned last_percent = 999;
memset(array, 0, array_size);
i = nr_objects;
idx = 0;
- eye_candy = i - (nr_objects / 20);
+ if (progress)
+ fprintf(stderr, "Deltifying %d objects.\n", nr_result);
while (--i >= 0) {
struct object_entry *entry = list[i];
char type[10];
int j;
- if (progress && i <= eye_candy) {
- eye_candy -= nr_objects / 20;
- fputc('.', stderr);
+ if (!entry->preferred_base)
+ processed++;
+
+ if (progress) {
+ unsigned percent = processed * 100 / nr_result;
+ if (percent != last_percent || progress_update) {
+ fprintf(stderr, "%4u%% (%u/%u) done\r",
+ percent, processed, nr_result);
+ progress_update = 0;
+ last_percent = percent;
+ }
}
if (entry->delta)
*/
continue;
+ free(n->delta_index);
free(n->data);
n->entry = entry;
n->data = read_sha1_file(entry->sha1, type, &size);
idx = 0;
}
- for (i = 0; i < window; ++i)
+ if (progress)
+ fputc('\n', stderr);
+
+ for (i = 0; i < window; ++i) {
+ free(array[i].delta_index);
free(array[i].data);
+ }
free(array);
}
static void prepare_pack(int window, int depth)
{
- if (progress)
- fprintf(stderr, "Packing %d objects", nr_result);
get_object_details();
- if (progress)
- fputc('.', stderr);
-
sorted_by_type = create_sorted_list(type_size_sort);
if (window && depth)
find_deltas(sorted_by_type, window+1, depth);
- if (progress)
- fputc('\n', stderr);
- write_pack_file();
}
static int reuse_cached_pack(unsigned char *sha1, int pack_to_stdout)
int window = 10, depth = 10, pack_to_stdout = 0;
struct object_entry **list;
int i;
- struct timeval prev_tv;
- int eye_candy = 0;
- int eye_candy_incr = 500;
-
setup_git_directory();
usage(pack_usage);
prepare_packed_git();
+
if (progress) {
+ struct itimerval v;
+ v.it_interval.tv_sec = 1;
+ v.it_interval.tv_usec = 0;
+ v.it_value = v.it_interval;
+ signal(SIGALRM, progress_interval);
+ setitimer(ITIMER_REAL, &v, NULL);
fprintf(stderr, "Generating pack...\n");
- gettimeofday(&prev_tv, NULL);
}
+
while (fgets(line, sizeof(line), stdin) != NULL) {
unsigned char sha1[20];
- if (progress && (eye_candy <= nr_objects)) {
- fprintf(stderr, "Counting objects...%d\r", nr_objects);
- if (eye_candy && (50 <= eye_candy_incr)) {
- struct timeval tv;
- int time_diff;
- gettimeofday(&tv, NULL);
- time_diff = (tv.tv_sec - prev_tv.tv_sec);
- time_diff <<= 10;
- time_diff += (tv.tv_usec - prev_tv.tv_usec);
- if ((1 << 9) < time_diff)
- eye_candy_incr += 50;
- else if (50 < eye_candy_incr)
- eye_candy_incr -= 50;
- }
- eye_candy += eye_candy_incr;
- }
if (line[0] == '-') {
if (get_sha1_hex(line+1, sha1))
die("expected edge sha1, got garbage:\n %s",
}
if (progress)
fprintf(stderr, "Done counting %d objects.\n", nr_objects);
- if (non_empty && !nr_objects)
+ sorted_by_sha = create_final_object_list();
+ if (non_empty && !nr_result)
return 0;
- sorted_by_sha = create_final_object_list();
SHA1_Init(&ctx);
list = sorted_by_sha;
for (i = 0; i < nr_result; i++) {
if (reuse_cached_pack(object_list_sha1, pack_to_stdout))
;
else {
- prepare_pack(window, depth);
+ if (nr_result)
+ prepare_pack(window, depth);
+ if (progress && pack_to_stdout) {
+ /* the other end usually displays progress itself */
+ struct itimerval v = {{0,},};
+ setitimer(ITIMER_REAL, &v, NULL);
+ signal(SIGALRM, SIG_IGN );
+ progress_update = 0;
+ }
+ write_pack_file();
if (!pack_to_stdout) {
write_index_file();
puts(sha1_to_hex(object_list_sha1));