Code

provide a facility for "delayed" progress reporting
[git.git] / index-pack.c
index a833f640f6bb4e9eb2b876b65644b410b426dbb0..824004f9a2a53dcef1db3c083a4a94ce0eff9028 100644 (file)
@@ -6,6 +6,7 @@
 #include "commit.h"
 #include "tag.h"
 #include "tree.h"
+#include "progress.h"
 
 static const char index_pack_usage[] =
 "git-index-pack [-v] [-o <index-file>] [{ ---keep | --keep=<msg> }] { <pack-file> | --stdin [--fix-thin] [<pack-file>] }";
@@ -47,40 +48,7 @@ static int nr_resolved_deltas;
 static int from_stdin;
 static int verbose;
 
-static volatile sig_atomic_t progress_update;
-
-static void progress_interval(int signum)
-{
-       progress_update = 1;
-}
-
-static void setup_progress_signal(void)
-{
-       struct sigaction sa;
-       struct itimerval v;
-
-       memset(&sa, 0, sizeof(sa));
-       sa.sa_handler = progress_interval;
-       sigemptyset(&sa.sa_mask);
-       sa.sa_flags = SA_RESTART;
-       sigaction(SIGALRM, &sa, NULL);
-
-       v.it_interval.tv_sec = 1;
-       v.it_interval.tv_usec = 0;
-       v.it_value = v.it_interval;
-       setitimer(ITIMER_REAL, &v, NULL);
-
-}
-
-static unsigned display_progress(unsigned n, unsigned total, unsigned last_pc)
-{
-       unsigned percent = n * 100 / total;
-       if (percent != last_pc || progress_update) {
-               fprintf(stderr, "%4u%% (%u/%u) done\r", percent, n, total);
-               progress_update = 0;
-       }
-       return percent;
-}
+static struct progress progress;
 
 /* We always read in 4kB chunks. */
 static unsigned char input_buffer[4096];
@@ -428,7 +396,7 @@ static int compare_delta_entry(const void *a, const void *b)
 /* Parse all objects and return the pack content SHA1 hash */
 static void parse_pack_objects(unsigned char *sha1)
 {
-       int i, percent = -1;
+       int i;
        struct delta_entry *delta = deltas;
        void *data;
        struct stat st;
@@ -440,7 +408,7 @@ static void parse_pack_objects(unsigned char *sha1)
         * - remember base (SHA1 or offset) for all deltas.
         */
        if (verbose)
-               fprintf(stderr, "Indexing %d objects.\n", nr_objects);
+               start_progress(&progress, "Indexing %u objects...", "", nr_objects);
        for (i = 0; i < nr_objects; i++) {
                struct object_entry *obj = &objects[i];
                data = unpack_raw_entry(obj, &delta->base);
@@ -453,11 +421,11 @@ static void parse_pack_objects(unsigned char *sha1)
                        sha1_object(data, obj->size, obj->type, obj->sha1);
                free(data);
                if (verbose)
-                       percent = display_progress(i+1, nr_objects, percent);
+                       display_progress(&progress, i+1);
        }
        objects[i].offset = consumed_bytes;
        if (verbose)
-               fputc('\n', stderr);
+               stop_progress(&progress);
 
        /* Check pack integrity */
        flush();
@@ -489,7 +457,7 @@ static void parse_pack_objects(unsigned char *sha1)
         *   for some more deltas.
         */
        if (verbose)
-               fprintf(stderr, "Resolving %d deltas.\n", nr_deltas);
+               start_progress(&progress, "Resolving %u deltas...", "", nr_deltas);
        for (i = 0; i < nr_objects; i++) {
                struct object_entry *obj = &objects[i];
                union delta_base base;
@@ -521,11 +489,8 @@ static void parse_pack_objects(unsigned char *sha1)
                        }
                free(data);
                if (verbose)
-                       percent = display_progress(nr_resolved_deltas,
-                                                  nr_deltas, percent);
+                       display_progress(&progress, nr_resolved_deltas);
        }
-       if (verbose && nr_resolved_deltas == nr_deltas)
-               fputc('\n', stderr);
 }
 
 static int write_compressed(int fd, void *in, unsigned int size, uint32_t *obj_crc)
@@ -587,7 +552,7 @@ static int delta_pos_compare(const void *_a, const void *_b)
 static void fix_unresolved_deltas(int nr_unresolved)
 {
        struct delta_entry **sorted_by_pos;
-       int i, n = 0, percent = -1;
+       int i, n = 0;
 
        /*
         * Since many unresolved deltas may well be themselves base objects
@@ -632,12 +597,9 @@ static void fix_unresolved_deltas(int nr_unresolved)
                append_obj_to_pack(d->base.sha1, data, size, type);
                free(data);
                if (verbose)
-                       percent = display_progress(nr_resolved_deltas,
-                                                  nr_deltas, percent);
+                       display_progress(&progress, nr_resolved_deltas);
        }
        free(sorted_by_pos);
-       if (verbose)
-               fputc('\n', stderr);
 }
 
 static void readjust_pack_header_and_sha1(unsigned char *sha1)
@@ -671,6 +633,9 @@ static void readjust_pack_header_and_sha1(unsigned char *sha1)
        write_or_die(output_fd, sha1, 20);
 }
 
+static uint32_t index_default_version = 1;
+static uint32_t index_off32_limit = 0x7fffffff;
+
 static int sha1_compare(const void *_a, const void *_b)
 {
        struct object_entry *a = *(struct object_entry **)_a;
@@ -719,7 +684,7 @@ static const char *write_index_file(const char *index_name, unsigned char *sha1)
        f = sha1fd(fd, index_name);
 
        /* if last object's offset is >= 2^31 we should use index V2 */
-       index_version = (objects[nr_objects-1].offset >> 31) ? 2 : 1;
+       index_version = (objects[nr_objects-1].offset >> 31) ? 2 : index_default_version;
 
        /* index versions 2 and above need a header */
        if (index_version >= 2) {
@@ -779,7 +744,7 @@ static const char *write_index_file(const char *index_name, unsigned char *sha1)
                list = sorted_by_sha;
                for (i = 0; i < nr_objects; i++) {
                        struct object_entry *obj = *list++;
-                       uint32_t offset = (obj->offset <= 0x7fffffff) ?
+                       uint32_t offset = (obj->offset <= index_off32_limit) ?
                                obj->offset : (0x80000000 | nr_large_offset++);
                        offset = htonl(offset);
                        sha1write(f, &offset, 4);
@@ -790,7 +755,7 @@ static const char *write_index_file(const char *index_name, unsigned char *sha1)
                while (nr_large_offset) {
                        struct object_entry *obj = *list++;
                        uint64_t offset = obj->offset;
-                       if (offset > 0x7fffffff) {
+                       if (offset > index_off32_limit) {
                                uint32_t split[2];
                                split[0]        = htonl(offset >> 32);
                                split[1] = htonl(offset & 0xffffffff);
@@ -929,6 +894,15 @@ int main(int argc, char **argv)
                                if (index_name || (i+1) >= argc)
                                        usage(index_pack_usage);
                                index_name = argv[++i];
+                       } else if (!prefixcmp(arg, "--index-version=")) {
+                               char *c;
+                               index_default_version = strtoul(arg + 16, &c, 10);
+                               if (index_default_version > 2)
+                                       die("bad %s", arg);
+                               if (*c == ',')
+                                       index_off32_limit = strtoul(c+1, &c, 0);
+                               if (*c || index_off32_limit & 0x80000000)
+                                       die("bad %s", arg);
                        } else
                                usage(index_pack_usage);
                        continue;
@@ -968,10 +942,13 @@ int main(int argc, char **argv)
        parse_pack_header();
        objects = xmalloc((nr_objects + 1) * sizeof(struct object_entry));
        deltas = xmalloc(nr_objects * sizeof(struct delta_entry));
-       if (verbose)
-               setup_progress_signal();
        parse_pack_objects(sha1);
-       if (nr_deltas != nr_resolved_deltas) {
+       if (nr_deltas == nr_resolved_deltas) {
+               if (verbose)
+                       stop_progress(&progress);
+               /* Flush remaining pack final 20-byte SHA1. */
+               flush();
+       } else {
                if (fix_thin_pack) {
                        int nr_unresolved = nr_deltas - nr_resolved_deltas;
                        int nr_objects_initial = nr_objects;
@@ -981,17 +958,16 @@ int main(int argc, char **argv)
                                           (nr_objects + nr_unresolved + 1)
                                           * sizeof(*objects));
                        fix_unresolved_deltas(nr_unresolved);
-                       if (verbose)
+                       if (verbose) {
+                               stop_progress(&progress);
                                fprintf(stderr, "%d objects were added to complete this thin pack.\n",
                                        nr_objects - nr_objects_initial);
+                       }
                        readjust_pack_header_and_sha1(sha1);
                }
                if (nr_deltas != nr_resolved_deltas)
                        die("pack has %d unresolved deltas",
                            nr_deltas - nr_resolved_deltas);
-       } else {
-               /* Flush remaining pack final 20-byte SHA1. */
-               flush();
        }
        free(deltas);
        curr_index = write_index_file(index_name, sha1);