[PATCH v3 02/15] run-command API: have "run_processes_parallel{,_tr2}()" return void
- From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
- Date
- Oct 12, 2022, 21:02 UTC
- Message-ID
- <patch-v3-02.15-a2e4fd652c1-20221012T205712Z-avarab@gmail.com>
- In-Reply-To
- <cover-v3-00.15-00000000000-20221012T205712Z-avarab@gmail.com>
Change the "run_processes_parallel{,_tr2}()" functions to return void, instead of int. Ever since c553c72eed6 (run-command: add an asynchronous parallel child processor, 2015-12-15) they have unconditionally returned 0.
To get a "real" return value out of this function the caller needs to get it via the "task_finished_fn" callback, see the example in hook.c added in 96e7225b310 (hook: add 'run' subcommand, 2021-12-22).
So the "result = " and "if (!result)" code added to "builtin/fetch.c" d54dea77dba (fetch: let --jobs=<n> parallelize --multiple, too, 2019-10-05) has always been redundant, we always took that "if" path. Likewise the "ret =" in "t/helper/test-run-command.c" added in be5d88e1128 (test-tool run-command: learn to run (parts of) the testsuite, 2019-10-04) wasn't used, instead we got the return value from the "if (suite.failed.nr > 0)" block seen in the context.
Subsequent commits will alter this API interface, getting rid of this always-zero return value makes it easier to understand those changes.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> --- builtin/fetch.c | 17 ++++++++--------- run-command.c | 27 +++++++++++---------------- run-command.h | 16 ++++++++-------- t/helper/test-run-command.c | 16 ++++++++-------- 4 files changed, 35 insertions(+), 41 deletions(-)
diff --git a/builtin/fetch.c b/builtin/fetch.c index a0fca93bb6a..78043fb67ef 100644 --- a/builtin/fetch.c +++ b/builtin/fetch.c @@ -1953,15 +1953,14 @@ static int fetch_multiple(struct string_list *list, int max_children) struct parallel_fetch_state state = { argv.v, list, 0, 0 }; strvec_push(&argv, "--end-of-options"); - result = run_processes_parallel_tr2(max_children, - &fetch_next_remote, - &fetch_failed_to_start, - &fetch_finished, - &state, - "fetch", "parallel/fetch"); - - if (!result) - result = state.result; + run_processes_parallel_tr2(max_children, + &fetch_next_remote, + &fetch_failed_to_start, + &fetch_finished, + &state, + "fetch", "parallel/fetch"); + + result = state.result; } else for (i = 0; i < list->nr; i++) { const char *name = list->items[i].string; diff --git a/run-command.c b/run-command.c index 5ec3a46dccf..642e6b6e057 100644 --- a/run-command.c +++ b/run-command.c @@ -1783,11 +1783,11 @@ static int pp_collect_finished(struct parallel_processes *pp) return result; } -int run_processes_parallel(int n, - get_next_task_fn get_next_task, - start_failure_fn start_failure, - task_finished_fn task_finished, - void *pp_cb) +void run_processes_parallel(int n, + get_next_task_fn get_next_task, + start_failure_fn start_failure, + task_finished_fn task_finished, + void *pp_cb) { int i, code; int output_timeout = 100; @@ -1834,25 +1834,20 @@ int run_processes_parallel(int n, } pp_cleanup(&pp); - return 0; } -int run_processes_parallel_tr2(int n, get_next_task_fn get_next_task, - start_failure_fn start_failure, - task_finished_fn task_finished, void *pp_cb, - const char *tr2_category, const char *tr2_label) +void run_processes_parallel_tr2(int n, get_next_task_fn get_next_task, + start_failure_fn start_failure, + task_finished_fn task_finished, void *pp_cb, + const char *tr2_category, const char *tr2_label) { - int result; - trace2_region_enter_printf(tr2_category, tr2_label, NULL, "max:%d", ((n < 1) ? online_cpus() : n)); - result = run_processes_parallel(n, get_next_task, start_failure, - task_finished, pp_cb); + run_processes_parallel(n, get_next_task, start_failure, + task_finished, pp_cb); trace2_region_leave(tr2_category, tr2_label, NULL); - - return result; } int run_auto_maintenance(int quiet) diff --git a/run-command.h b/run-command.h index 0e85e5846a5..e76a1b6b5b3 100644 --- a/run-command.h +++ b/run-command.h @@ -485,14 +485,14 @@ typedef int (*task_finished_fn)(int result, * API reads that setting. */ extern int run_processes_parallel_ungroup; -int run_processes_parallel(int n, - get_next_task_fn, - start_failure_fn, - task_finished_fn, - void *pp_cb); -int run_processes_parallel_tr2(int n, get_next_task_fn, start_failure_fn, - task_finished_fn, void *pp_cb, - const char *tr2_category, const char *tr2_label); +void run_processes_parallel(int n, + get_next_task_fn, + start_failure_fn, + task_finished_fn, + void *pp_cb); +void run_processes_parallel_tr2(int n, get_next_task_fn, start_failure_fn, + task_finished_fn, void *pp_cb, + const char *tr2_category, const char *tr2_label); /** * Convenience function which prepares env for a command to be run in a diff --git a/t/helper/test-run-command.c b/t/helper/test-run-command.c index 390fa4fb724..30c474f3243 100644 --- a/t/helper/test-run-command.c +++ b/t/helper/test-run-command.c @@ -192,8 +192,8 @@ static int testsuite(int argc, const char **argv) fprintf(stderr, "Running %"PRIuMAX" tests (%d at a time)\n", (uintmax_t)suite.tests.nr, max_jobs); - ret = run_processes_parallel(max_jobs, next_test, test_failed, - test_finished, &suite); + run_processes_parallel(max_jobs, next_test, test_failed, + test_finished, &suite); if (suite.failed.nr > 0) { ret = 1; @@ -428,16 +428,16 @@ int cmd__run_command(int argc, const char **argv) strvec_pushv(&proc.args, (const char **)argv + 3); if (!strcmp(argv[1], "run-command-parallel")) { - exit(run_processes_parallel(jobs, parallel_next, - NULL, NULL, &proc)); + run_processes_parallel(jobs, parallel_next, NULL, NULL, &proc); } else if (!strcmp(argv[1], "run-command-abort")) { - exit(run_processes_parallel(jobs, parallel_next, - NULL, task_finished, &proc)); + run_processes_parallel(jobs, parallel_next, NULL, + task_finished, &proc); } else if (!strcmp(argv[1], "run-command-no-jobs")) { - exit(run_processes_parallel(jobs, no_job, - NULL, task_finished, &proc)); + run_processes_parallel(jobs, no_job, NULL, task_finished, + &proc); } else { fprintf(stderr, "check usage\n"); return 1; } + exit(0); }
-- 2.38.0.971.ge79ff6d20e7