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-rw-r--r--builtin-log.c88
-rw-r--r--revision.c63
-rw-r--r--revision.h8
3 files changed, 119 insertions, 40 deletions
diff --git a/builtin-log.c b/builtin-log.c
index 4e9d0cb..981f388 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -77,17 +77,85 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
}
}
+/*
+ * This gives a rough estimate for how many commits we
+ * will print out in the list.
+ */
+static int estimate_commit_count(struct rev_info *rev, struct commit_list *list)
+{
+ int n = 0;
+
+ while (list) {
+ struct commit *commit = list->item;
+ unsigned int flags = commit->object.flags;
+
+ list = list->next;
+ if (flags & UNINTERESTING)
+ continue;
+ if (rev->prune_fn && rev->dense && !(flags & TREECHANGE)) {
+ if (commit->parents && !commit->parents->next)
+ continue;
+ }
+ n++;
+ }
+ return n;
+}
+
+static void show_early_header(struct rev_info *rev, const char *stage, int nr)
+{
+ if (rev->shown_one) {
+ rev->shown_one = 0;
+ if (rev->commit_format != CMIT_FMT_ONELINE)
+ putchar(rev->diffopt.line_termination);
+ }
+ printf("Final output: %d %s\n", nr, stage);
+}
+
+struct itimerval early_output_timer;
+
static void log_show_early(struct rev_info *revs, struct commit_list *list)
{
int i = revs->early_output;
+ int show_header = 1;
sort_in_topological_order(&list, revs->lifo);
while (list && i) {
struct commit *commit = list->item;
- log_tree_commit(revs, commit);
+ switch (simplify_commit(revs, commit)) {
+ case commit_show:
+ if (show_header) {
+ int n = estimate_commit_count(revs, list);
+ show_early_header(revs, "incomplete", n);
+ show_header = 0;
+ }
+ log_tree_commit(revs, commit);
+ i--;
+ break;
+ case commit_ignore:
+ break;
+ case commit_error:
+ return;
+ }
list = list->next;
- i--;
}
+
+ /* Did we already get enough commits for the early output? */
+ if (!i)
+ return;
+
+ /*
+ * ..if no, then repeat it twice a second until we
+ * do.
+ *
+ * NOTE! We don't use "it_interval", because if the
+ * reader isn't listening, we want our output to be
+ * throttled by the writing, and not have the timer
+ * trigger every second even if we're blocked on a
+ * reader!
+ */
+ early_output_timer.it_value.tv_sec = 0;
+ early_output_timer.it_value.tv_usec = 500000;
+ setitimer(ITIMER_REAL, &early_output_timer, NULL);
}
static void early_output(int signal)
@@ -98,7 +166,6 @@ static void early_output(int signal)
static void setup_early_output(struct rev_info *rev)
{
struct sigaction sa;
- struct itimerval v;
/*
* Set up the signal handler, minimally intrusively:
@@ -120,21 +187,16 @@ static void setup_early_output(struct rev_info *rev)
*
* This is a one-time-only trigger.
*/
- memset(&v, 0, sizeof(v));
- v.it_value.tv_sec = 0;
- v.it_value.tv_usec = 100000;
- setitimer(ITIMER_REAL, &v, NULL);
+ early_output_timer.it_value.tv_sec = 0;
+ early_output_timer.it_value.tv_usec = 100000;
+ setitimer(ITIMER_REAL, &early_output_timer, NULL);
}
static void finish_early_output(struct rev_info *rev)
{
+ int n = estimate_commit_count(rev, rev->commits);
signal(SIGALRM, SIG_IGN);
- if (rev->shown_one) {
- rev->shown_one = 0;
- if (rev->commit_format != CMIT_FMT_ONELINE)
- putchar(rev->diffopt.line_termination);
- }
- printf("Final output:\n");
+ show_early_header(rev, "done", n);
}
static int cmd_log_walk(struct rev_info *rev)
diff --git a/revision.c b/revision.c
index 26610bb..2e6121f 100644
--- a/revision.c
+++ b/revision.c
@@ -1398,6 +1398,36 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
commit->buffer, strlen(commit->buffer));
}
+enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit)
+{
+ if (commit->object.flags & SHOWN)
+ return commit_ignore;
+ if (revs->unpacked && has_sha1_pack(commit->object.sha1, revs->ignore_packed))
+ return commit_ignore;
+ if (commit->object.flags & UNINTERESTING)
+ return commit_ignore;
+ if (revs->min_age != -1 && (commit->date > revs->min_age))
+ return commit_ignore;
+ if (revs->no_merges && commit->parents && commit->parents->next)
+ return commit_ignore;
+ if (!commit_match(commit, revs))
+ return commit_ignore;
+ if (revs->prune_fn && revs->dense) {
+ /* Commit without changes? */
+ if (!(commit->object.flags & TREECHANGE)) {
+ /* drop merges unless we want parenthood */
+ if (!revs->parents)
+ return commit_ignore;
+ /* non-merge - always ignore it */
+ if (!commit->parents || !commit->parents->next)
+ return commit_ignore;
+ }
+ if (revs->parents && rewrite_parents(revs, commit) < 0)
+ return commit_error;
+ }
+ return commit_show;
+}
+
static struct commit *get_revision_1(struct rev_info *revs)
{
if (!revs->commits)
@@ -1425,36 +1455,15 @@ static struct commit *get_revision_1(struct rev_info *revs)
if (add_parents_to_list(revs, commit, &revs->commits) < 0)
return NULL;
}
- if (commit->object.flags & SHOWN)
- continue;
-
- if (revs->unpacked && has_sha1_pack(commit->object.sha1,
- revs->ignore_packed))
- continue;
- if (commit->object.flags & UNINTERESTING)
- continue;
- if (revs->min_age != -1 && (commit->date > revs->min_age))
- continue;
- if (revs->no_merges &&
- commit->parents && commit->parents->next)
- continue;
- if (!commit_match(commit, revs))
+ switch (simplify_commit(revs, commit)) {
+ case commit_ignore:
continue;
- if (revs->prune_fn && revs->dense) {
- /* Commit without changes? */
- if (!(commit->object.flags & TREECHANGE)) {
- /* drop merges unless we want parenthood */
- if (!revs->parents)
- continue;
- /* non-merge - always ignore it */
- if (!commit->parents || !commit->parents->next)
- continue;
- }
- if (revs->parents && rewrite_parents(revs, commit) < 0)
- return NULL;
+ case commit_error:
+ return NULL;
+ default:
+ return commit;
}
- return commit;
} while (revs->commits);
return NULL;
}
diff --git a/revision.h b/revision.h
index d8a5a50..2232247 100644
--- a/revision.h
+++ b/revision.h
@@ -133,4 +133,12 @@ extern void add_object(struct object *obj,
extern void add_pending_object(struct rev_info *revs, struct object *obj, const char *name);
+enum commit_action {
+ commit_ignore,
+ commit_show,
+ commit_error
+};
+
+extern enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit);
+
#endif