#include "revision.h"
#include "list-objects.h"
#include "builtin.h"
+#include "log-tree.h"
/* bits #0-15 in revision.h */
" --remove-empty\n"
" --all\n"
" --stdin\n"
+" --quiet\n"
" ordering output:\n"
" --topo-order\n"
" --date-order\n"
" --left-right\n"
" special purpose:\n"
" --bisect\n"
-" --bisect-vars"
+" --bisect-vars\n"
+" --bisect-all"
;
static struct rev_info revs;
static int hdr_termination;
static const char *header_prefix;
+static void finish_commit(struct commit *commit);
static void show_commit(struct commit *commit)
{
if (show_timestamp)
parents = parents->next;
}
}
+ show_decorations(commit);
if (revs.commit_format == CMIT_FMT_ONELINE)
putchar(' ');
else
putchar('\n');
if (revs.verbose_header) {
- char *buf = NULL;
- unsigned long buflen = 0;
- pretty_print_commit(revs.commit_format, commit, ~0,
- &buf, &buflen,
- revs.abbrev, NULL, NULL, revs.date_mode, 0);
- printf("%s%c", buf, hdr_termination);
- free(buf);
+ struct strbuf buf;
+ strbuf_init(&buf, 0);
+ pretty_print_commit(revs.commit_format, commit,
+ &buf, revs.abbrev, NULL, NULL,
+ revs.date_mode, 0);
+ if (buf.len)
+ printf("%s%c", buf.buf, hdr_termination);
+ strbuf_release(&buf);
}
maybe_flush_or_die(stdout, "stdout");
+ finish_commit(commit);
+}
+
+static void finish_commit(struct commit *commit)
+{
if (commit->parents) {
free_commit_list(commit->parents);
commit->parents = NULL;
commit->buffer = NULL;
}
+static void finish_object(struct object_array_entry *p)
+{
+ if (p->item->type == OBJ_BLOB && !has_sha1_file(p->item->sha1))
+ die("missing blob object '%s'", sha1_to_hex(p->item->sha1));
+}
+
static void show_object(struct object_array_entry *p)
{
/* An object with name "foo\n0000000..." can be used to
*/
const char *ep = strchr(p->name, '\n');
- if (p->item->type == OBJ_BLOB && !has_sha1_file(p->item->sha1))
- die("missing blob object '%s'", sha1_to_hex(p->item->sha1));
-
+ finish_object(p);
if (ep) {
printf("%s %.*s\n", sha1_to_hex(p->item->sha1),
(int) (ep - p->name),
if (commit->object.flags & (UNINTERESTING | COUNTED))
break;
- if (!revs.prune_fn || (commit->object.flags & TREECHANGE))
+ if (!(commit->object.flags & TREESAME))
nr++;
commit->object.flags |= COUNTED;
p = commit->parents;
return count;
}
-static inline int halfway(struct commit_list *p, int distance, int nr)
+static inline int halfway(struct commit_list *p, int nr)
{
/*
* Don't short-cut something we are not going to return!
*/
- if (revs.prune_fn && !(p->item->object.flags & TREECHANGE))
+ if (p->item->object.flags & TREESAME)
return 0;
if (DEBUG_BISECT)
return 0;
* 2 and 3 are halfway of 5.
* 3 is halfway of 6 but 2 and 4 are not.
*/
- distance *= 2;
- switch (distance - nr) {
+ switch (2 * weight(p) - nr) {
case -1: case 0: case 1:
return 1;
default:
char *ep, *sp;
fprintf(stderr, "%c%c%c ",
- (flags & TREECHANGE) ? 'T' : ' ',
+ (flags & TREESAME) ? ' ' : 'T',
(flags & UNINTERESTING) ? 'U' : ' ',
(flags & COUNTED) ? 'C' : ' ');
if (commit->util)
}
#endif /* DEBUG_BISECT */
+static struct commit_list *best_bisection(struct commit_list *list, int nr)
+{
+ struct commit_list *p, *best;
+ int best_distance = -1;
+
+ best = list;
+ for (p = list; p; p = p->next) {
+ int distance;
+ unsigned flags = p->item->object.flags;
+
+ if (flags & TREESAME)
+ continue;
+ distance = weight(p);
+ if (nr - distance < distance)
+ distance = nr - distance;
+ if (distance > best_distance) {
+ best = p;
+ best_distance = distance;
+ }
+ }
+
+ return best;
+}
+
+struct commit_dist {
+ struct commit *commit;
+ int distance;
+};
+
+static int compare_commit_dist(const void *a_, const void *b_)
+{
+ struct commit_dist *a, *b;
+
+ a = (struct commit_dist *)a_;
+ b = (struct commit_dist *)b_;
+ if (a->distance != b->distance)
+ return b->distance - a->distance; /* desc sort */
+ return hashcmp(a->commit->object.sha1, b->commit->object.sha1);
+}
+
+static struct commit_list *best_bisection_sorted(struct commit_list *list, int nr)
+{
+ struct commit_list *p;
+ struct commit_dist *array = xcalloc(nr, sizeof(*array));
+ int cnt, i;
+
+ for (p = list, cnt = 0; p; p = p->next) {
+ int distance;
+ unsigned flags = p->item->object.flags;
+
+ if (flags & TREESAME)
+ continue;
+ distance = weight(p);
+ if (nr - distance < distance)
+ distance = nr - distance;
+ array[cnt].commit = p->item;
+ array[cnt].distance = distance;
+ cnt++;
+ }
+ qsort(array, cnt, sizeof(*array), compare_commit_dist);
+ for (p = list, i = 0; i < cnt; i++) {
+ struct name_decoration *r = xmalloc(sizeof(*r) + 100);
+ struct object *obj = &(array[i].commit->object);
+
+ sprintf(r->name, "dist=%d", array[i].distance);
+ r->next = add_decoration(&name_decoration, obj, r);
+ p->item = array[i].commit;
+ p = p->next;
+ }
+ if (p)
+ p->next = NULL;
+ free(array);
+ return list;
+}
+
/*
* zero or positive weight is the number of interesting commits it can
* reach, including itself. Especially, weight = 0 means it does not
* unknown. After running count_distance() first, they will get zero
* or positive distance.
*/
-
-static struct commit_list *find_bisection(struct commit_list *list,
- int *reaches, int *all)
+static struct commit_list *do_find_bisection(struct commit_list *list,
+ int nr, int *weights,
+ int find_all)
{
- int n, nr, on_list, counted, distance;
- struct commit_list *p, *best, *next, *last;
- int *weights;
-
- show_list("bisection 2 entry", 0, 0, list);
-
- /*
- * Count the number of total and tree-changing items on the
- * list, while reversing the list.
- */
- for (nr = on_list = 0, last = NULL, p = list;
- p;
- p = next) {
- unsigned flags = p->item->object.flags;
-
- next = p->next;
- if (flags & UNINTERESTING)
- continue;
- p->next = last;
- last = p;
- if (!revs.prune_fn || (flags & TREECHANGE))
- nr++;
- on_list++;
- }
- list = last;
- show_list("bisection 2 sorted", 0, nr, list);
+ int n, counted;
+ struct commit_list *p;
- *all = nr;
- weights = xcalloc(on_list, sizeof(*weights));
counted = 0;
for (n = 0, p = list; p; p = p->next) {
p->item->util = &weights[n++];
switch (count_interesting_parents(commit)) {
case 0:
- if (!revs.prune_fn || (flags & TREECHANGE)) {
+ if (!(flags & TREESAME)) {
weight_set(p, 1);
counted++;
show_list("bisection 2 count one",
for (p = list; p; p = p->next) {
if (p->item->object.flags & UNINTERESTING)
continue;
- n = weight(p);
- if (n != -2)
+ if (weight(p) != -2)
continue;
- distance = count_distance(p);
+ weight_set(p, count_distance(p));
clear_distance(list);
- weight_set(p, distance);
/* Does it happen to be at exactly half-way? */
- if (halfway(p, distance, nr)) {
- p->next = NULL;
- *reaches = distance;
- free(weights);
+ if (!find_all && halfway(p, nr))
return p;
- }
counted++;
}
* add one for p itself if p is to be counted,
* otherwise inherit it from q directly.
*/
- if (!revs.prune_fn || (flags & TREECHANGE)) {
+ if (!(flags & TREESAME)) {
weight_set(p, weight(q)+1);
counted++;
show_list("bisection 2 count one",
weight_set(p, weight(q));
/* Does it happen to be at exactly half-way? */
- distance = weight(p);
- if (halfway(p, distance, nr)) {
- p->next = NULL;
- *reaches = distance;
- free(weights);
+ if (!find_all && halfway(p, nr))
return p;
- }
}
}
show_list("bisection 2 counted all", counted, nr, list);
- /* Then find the best one */
- counted = -1;
- best = list;
- for (p = list; p; p = p->next) {
+ if (!find_all)
+ return best_bisection(list, nr);
+ else
+ return best_bisection_sorted(list, nr);
+}
+
+static struct commit_list *find_bisection(struct commit_list *list,
+ int *reaches, int *all,
+ int find_all)
+{
+ int nr, on_list;
+ struct commit_list *p, *best, *next, *last;
+ int *weights;
+
+ show_list("bisection 2 entry", 0, 0, list);
+
+ /*
+ * Count the number of total and tree-changing items on the
+ * list, while reversing the list.
+ */
+ for (nr = on_list = 0, last = NULL, p = list;
+ p;
+ p = next) {
unsigned flags = p->item->object.flags;
- if (revs.prune_fn && !(flags & TREECHANGE))
+ next = p->next;
+ if (flags & UNINTERESTING)
continue;
- distance = weight(p);
- if (nr - distance < distance)
- distance = nr - distance;
- if (distance > counted) {
- best = p;
- counted = distance;
- *reaches = weight(p);
- }
+ p->next = last;
+ last = p;
+ if (!(flags & TREESAME))
+ nr++;
+ on_list++;
+ }
+ list = last;
+ show_list("bisection 2 sorted", 0, nr, list);
+
+ *all = nr;
+ weights = xcalloc(on_list, sizeof(*weights));
+
+ /* Do the real work of finding bisection commit. */
+ best = do_find_bisection(list, nr, weights, find_all);
+ if (best) {
+ if (!find_all)
+ best->next = NULL;
+ *reaches = weight(best);
}
- if (best)
- best->next = NULL;
free(weights);
return best;
}
while (fgets(line, sizeof(line), stdin) != NULL) {
int len = strlen(line);
- if (line[len - 1] == '\n')
+ if (len && line[len - 1] == '\n')
line[--len] = 0;
if (!len)
break;
int i;
int read_from_stdin = 0;
int bisect_show_vars = 0;
+ int bisect_find_all = 0;
+ int quiet = 0;
git_config(git_default_config);
init_revisions(&revs, prefix);
bisect_list = 1;
continue;
}
+ if (!strcmp(arg, "--bisect-all")) {
+ bisect_list = 1;
+ bisect_find_all = 1;
+ continue;
+ }
if (!strcmp(arg, "--bisect-vars")) {
bisect_list = 1;
bisect_show_vars = 1;
read_revisions_from_stdin(&revs);
continue;
}
+ if (!strcmp(arg, "--quiet")) {
+ quiet = 1;
+ continue;
+ }
usage(rev_list_usage);
}
if (bisect_list)
revs.limited = 1;
- prepare_revision_walk(&revs);
+ if (prepare_revision_walk(&revs))
+ die("revision walk setup failed");
if (revs.tree_objects)
mark_edges_uninteresting(revs.commits, &revs, show_edge);
if (bisect_list) {
int reaches = reaches, all = all;
- revs.commits = find_bisection(revs.commits, &reaches, &all);
+ revs.commits = find_bisection(revs.commits, &reaches, &all,
+ bisect_find_all);
if (bisect_show_vars) {
int cnt;
+ char hex[41];
if (!revs.commits)
return 1;
/*
* A bisect set of size N has (N-1) commits further
* to test, as we already know one bad one.
*/
- cnt = all-reaches;
+ cnt = all - reaches;
if (cnt < reaches)
cnt = reaches;
+ strcpy(hex, sha1_to_hex(revs.commits->item->object.sha1));
+
+ if (bisect_find_all) {
+ traverse_commit_list(&revs, show_commit, show_object);
+ printf("------\n");
+ }
+
printf("bisect_rev=%s\n"
"bisect_nr=%d\n"
"bisect_good=%d\n"
"bisect_bad=%d\n"
"bisect_all=%d\n",
- sha1_to_hex(revs.commits->item->object.sha1),
+ hex,
cnt - 1,
all - reaches - 1,
reaches - 1,
}
}
- traverse_commit_list(&revs, show_commit, show_object);
+ traverse_commit_list(&revs,
+ quiet ? finish_commit : show_commit,
+ quiet ? finish_object : show_object);
return 0;
}