From 2d938fc7bcf2c8ce314c44955db5a4dd2e9b6adb Mon Sep 17 00:00:00 2001 From: Christian Couder Date: Sun, 17 May 2009 17:36:46 +0200 Subject: [PATCH] bisect: check ancestors without forking a "git rev-list" process We must save the pending commits that will be used during revision walking and unparse them after, because we want to leave a clean state for the next revision walking that will try to find the best bisection point. As we don't fork a process anymore to call "git rev-list", we need to remove the use of GIT_TRACE to check how "git rev-list" is called from the t6030 test that uses it. Signed-off-by: Christian Couder Signed-off-by: Junio C Hamano --- bisect.c | 54 +++++++++++++++---------------------- t/t6030-bisect-porcelain.sh | 13 +-------- 2 files changed, 23 insertions(+), 44 deletions(-) diff --git a/bisect.c b/bisect.c index dc4e1bb3c..c43c120bd 100644 --- a/bisect.c +++ b/bisect.c @@ -750,42 +750,31 @@ static void check_merge_bases(void) free_commit_list(result); } -/* - * This function runs the command "git rev-list $_good ^$_bad" - * and returns 1 if it produces some output, 0 otherwise. - */ -static int check_ancestors(void) +static int check_ancestors(const char *prefix) { - struct argv_array rev_argv = { NULL, 0, 0 }; - struct strbuf str = STRBUF_INIT; - int i, result = 0; - struct child_process rls; - FILE *rls_fout; + struct rev_info revs; + struct object_array pending_copy; + int i, res; - argv_array_push(&rev_argv, xstrdup("rev-list")); - argv_array_push_sha1(&rev_argv, current_bad_sha1, "^%s"); - for (i = 0; i < good_revs.sha1_nr; i++) - argv_array_push_sha1(&rev_argv, good_revs.sha1[i], "%s"); - argv_array_push(&rev_argv, NULL); + bisect_rev_setup(&revs, prefix, "^%s", "%s", 0); - memset(&rls, 0, sizeof(rls)); - rls.argv = rev_argv.argv; - rls.out = -1; - rls.git_cmd = 1; - if (start_command(&rls)) - die("Could not launch 'git rev-list' command."); - rls_fout = fdopen(rls.out, "r"); - while (strbuf_getline(&str, rls_fout, '\n') != EOF) { - strbuf_trim(&str); - if (*str.buf) { - result = 1; - break; - } + /* Save pending objects, so they can be cleaned up later. */ + memset(&pending_copy, 0, sizeof(pending_copy)); + for (i = 0; i < revs.pending.nr; i++) + add_object_array(revs.pending.objects[i].item, + revs.pending.objects[i].name, + &pending_copy); + + bisect_common(&revs); + res = (revs.commits != NULL); + + /* Clean up objects used, as they will be reused. */ + for (i = 0; i < pending_copy.nr; i++) { + struct object *o = pending_copy.objects[i].item; + unparse_commit((struct commit *)o); } - fclose(rls_fout); - finish_command(&rls); - return result; + return res; } /* @@ -813,7 +802,8 @@ static void check_good_are_ancestors_of_bad(const char *prefix) if (good_revs.sha1_nr == 0) return; - if (check_ancestors()) + /* Check if all good revs are ancestor of the bad rev. */ + if (check_ancestors(prefix)) check_merge_bases(); /* Create file BISECT_ANCESTORS_OK. */ diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh index 54b7ea650..5254b2351 100755 --- a/t/t6030-bisect-porcelain.sh +++ b/t/t6030-bisect-porcelain.sh @@ -482,28 +482,17 @@ test_expect_success 'good merge bases when good and bad are siblings' ' git bisect reset ' -check_trace() { - grep "$1" "$GIT_TRACE" | grep "\^$2" | grep "$3" >/dev/null -} - test_expect_success 'optimized merge base checks' ' - GIT_TRACE="$(pwd)/trace.log" && - export GIT_TRACE && git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt && grep "merge base must be tested" my_bisect_log.txt && grep "$HASH4" my_bisect_log.txt && - check_trace "rev-list" "$HASH7" "$SIDE_HASH7" && git bisect good > my_bisect_log2.txt && test -f ".git/BISECT_ANCESTORS_OK" && test "$HASH6" = $(git rev-parse --verify HEAD) && - : > "$GIT_TRACE" && git bisect bad > my_bisect_log3.txt && - test_must_fail check_trace "rev-list" "$HASH6" "$SIDE_HASH7" && git bisect good "$A_HASH" > my_bisect_log4.txt && grep "merge base must be tested" my_bisect_log4.txt && - test_must_fail test -f ".git/BISECT_ANCESTORS_OK" && - check_trace "rev-list" "$HASH6" "$A_HASH" && - unset GIT_TRACE + test_must_fail test -f ".git/BISECT_ANCESTORS_OK" ' # This creates another side branch called "parallel" with some files -- 2.26.2