ccanlint: compile tests with coverage in parallel

Measuring ccanlint -d ccan/tdb2 on my dual core hyperthread laptop gives:
Before: 5:59
After: 5:30

diff --git a/tools/ccanlint/tests/tests_compile_coverage.c b/tools/ccanlint/tests/tests_compile_coverage.c
index 0cbddeb7c1688d8ce5d223dc2a69d934bc937598..a1028110c146051da688a36bf31aa92abf6ec7b8 100644 (file)
--- a/tools/ccanlint/tests/tests_compile_coverage.c
+++ b/tools/ccanlint/tests/tests_compile_coverage.c
@@ -28,30 +28,24 @@ static const char *can_run_coverage(struct manifest *m)
        return NULL;
 }
 
-static char *cov_compile(const void *ctx,
-                        struct manifest *m,
-                        struct ccan_file *file,
-                        bool link_with_module,
-                        bool keep)
+static void cov_compile(const void *ctx,
+                       unsigned int time_ms,
+                       struct manifest *m,
+                       struct ccan_file *file,
+                       bool link_with_module,
+                       bool keep)
 {
-       char *output;
        char *flags = talloc_asprintf(ctx, "%s %s", cflags, COVERAGE_CFLAGS);
 
        file->compiled[COMPILE_COVERAGE]
                = maybe_temp_file(ctx, "", keep, file->fullname);
-       if (!compile_and_link(ctx, file->fullname, ccan_dir,
-                             test_obj_list(m, link_with_module,
-                                           COMPILE_NORMAL,
-                                           COMPILE_COVERAGE),
-                             compiler, flags,
-                             lib_list(m, COMPILE_NORMAL),
-                             file->compiled[COMPILE_COVERAGE], &output)) {
-               talloc_free(file->compiled[COMPILE_COVERAGE]);
-               file->compiled[COMPILE_COVERAGE] = NULL;
-               return output;
-       }
-       talloc_free(output);
-       return NULL;
+       compile_and_link_async(file, time_ms, file->fullname, ccan_dir,
+                              test_obj_list(m, link_with_module,
+                                            COMPILE_NORMAL,
+                                            COMPILE_COVERAGE),
+                              compiler, flags,
+                              lib_list(m, COMPILE_NORMAL),
+                              file->compiled[COMPILE_COVERAGE]);
 }
 
 /* FIXME: Coverage from testable examples as well. */
@@ -63,6 +57,7 @@ static void do_compile_coverage_tests(struct manifest *m,
        char *cmdout;
        struct ccan_file *i;
        struct list_head *h;
+       bool ok;
        char *f = talloc_asprintf(score, "%s %s", cflags, COVERAGE_CFLAGS);
 
        /* For API tests, we need coverage version of module. */
@@ -77,14 +72,16 @@ static void do_compile_coverage_tests(struct manifest *m,
 
        foreach_ptr(h, &m->run_tests, &m->api_tests) {
                list_for_each(h, i, list) {
-                       cmdout = cov_compile(m, m, i,
-                                            h == &m->api_tests,
-                                            keep);
-                       if (cmdout) {
-                               score_file_error(score, i, 0,
-                                 "Failed to compile test with coverage: %s",
-                                 cmdout);
-                       }
+                       cov_compile(m, *timeleft, m, i, h == &m->api_tests,
+                                   keep);
+               }
+       }
+
+       while ((i = collect_command(&ok, &cmdout)) != NULL) {
+               if (!ok) {
+                       score_file_error(score, i, 0,
+                                        "Failed to compile test with coverage:"
+                                        " %s", cmdout);
                }
        }
        if (!score->error) {