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authorShawn O. Pearce <spearce@spearce.org>2007-01-14 05:28:58 (GMT)
committerJunio C Hamano <junkio@cox.net>2007-01-14 20:20:39 (GMT)
commit3f6ee2d15ab4be8690c17c0af0338b8495f6f706 (patch)
tree896f8c3a056ab5608d0db694e87e69c1162ee34b /merge-recursive.c
parent66a155bc129b12f1f13be8e3f20e57db5ace0e6f (diff)
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Display a progress meter during merge-recursive.
Because large merges on slow systems can take up to a minute to execute we should try to keep the user entertained with a progress meter to let them know how far we have progressed through the current merge. The progress meter considers each entry in the in-memory index to be a unit, which means a single recursive merge will double the number of units in the progress meter. Files which are unmerged after the 3-way tree merge are also considered a unit within the progress meter. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'merge-recursive.c')
-rw-r--r--merge-recursive.c73
1 files changed, 66 insertions, 7 deletions
diff --git a/merge-recursive.c b/merge-recursive.c
index 9237a57..966d8e9 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -79,6 +79,11 @@ static struct path_list current_directory_set = {NULL, 0, 0, 1};
static int call_depth = 0;
static int verbosity = 2;
static int buffer_output = 1;
+static int do_progress = 1;
+static unsigned last_percent;
+static unsigned merged_cnt;
+static unsigned total_cnt;
+static volatile sig_atomic_t progress_update;
static struct output_buffer *output_list, *output_end;
static int show (int v)
@@ -153,6 +158,39 @@ static void output_commit_title(struct commit *commit)
}
}
+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 void display_progress()
+{
+ unsigned percent = total_cnt ? merged_cnt * 100 / total_cnt : 0;
+ if (progress_update || percent != last_percent) {
+ fprintf(stderr, "%4u%% (%u/%u) done\r",
+ percent, merged_cnt, total_cnt);
+ progress_update = 0;
+ last_percent = percent;
+ }
+}
+
static struct cache_entry *make_cache_entry(unsigned int mode,
const unsigned char *sha1, const char *path, int stage, int refresh)
{
@@ -315,11 +353,14 @@ static struct path_list *get_unmerged(void)
int i;
unmerged->strdup_paths = 1;
+ total_cnt += active_nr;
- for (i = 0; i < active_nr; i++) {
+ for (i = 0; i < active_nr; i++, merged_cnt++) {
struct path_list_item *item;
struct stage_data *e;
struct cache_entry *ce = active_cache[i];
+ if (do_progress)
+ display_progress();
if (!ce_stage(ce))
continue;
@@ -1096,13 +1137,15 @@ static int merge_trees(struct tree *head,
re_merge = get_renames(merge, common, head, merge, entries);
clean = process_renames(re_head, re_merge,
branch1, branch2);
- for (i = 0; i < entries->nr; i++) {
+ total_cnt += entries->nr;
+ for (i = 0; i < entries->nr; i++, merged_cnt++) {
const char *path = entries->items[i].path;
struct stage_data *e = entries->items[i].util;
- if (e->processed)
- continue;
- if (!process_entry(path, e, branch1, branch2))
+ if (!e->processed
+ && !process_entry(path, e, branch1, branch2))
clean = 0;
+ if (do_progress)
+ display_progress();
}
path_list_clear(re_merge, 0);
@@ -1210,6 +1253,15 @@ static int merge(struct commit *h1,
commit_list_insert(h1, &(*result)->parents);
commit_list_insert(h2, &(*result)->parents->next);
}
+ if (!call_depth && do_progress) {
+ /* Make sure we end at 100% */
+ if (!total_cnt)
+ total_cnt = 1;
+ merged_cnt = total_cnt;
+ progress_update = 1;
+ display_progress();
+ fputc('\n', stderr);
+ }
flush_output();
return clean;
}
@@ -1279,6 +1331,12 @@ int main(int argc, char *argv[])
}
if (argc - i != 3) /* "--" "<head>" "<remote>" */
die("Not handling anything other than two heads merge.");
+ if (verbosity >= 5) {
+ buffer_output = 0;
+ do_progress = 0;
+ }
+ else
+ do_progress = isatty(1);
branch1 = argv[++i];
branch2 = argv[++i];
@@ -1288,8 +1346,9 @@ int main(int argc, char *argv[])
branch1 = better_branch_name(branch1);
branch2 = better_branch_name(branch2);
- if (verbosity >= 5)
- buffer_output = 0;
+
+ if (do_progress)
+ setup_progress_signal();
if (show(3))
printf("Merging %s with %s\n", branch1, branch2);