Tests: `gen-ust-nevents`: add syncpoints

[lttng-tools.git] / tests / utils / testapp / gen-ust-nevents / gen-ust-nevents.c

diff --git a/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c b/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c
index abbc72e1285037f5edc8d1b8e78b83d04bd775e8..ec71023de4d872632d59aef98d1f14037bc854bc 100644 (file)
--- a/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c
+++ b/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c
@@ -27,6 +27,8 @@ static struct option long_options[] =
        /* These options set a flag. */
        {"iter", required_argument, 0, 'i'},
        {"wait", required_argument, 0, 'w'},
+       {"create-in-main", required_argument, 0, 'm'},
+       {"wait-before-first-event", required_argument, 0, 'b'},
        {0, 0, 0, 0}
 };
 
@@ -39,10 +41,18 @@ int main(int argc, char **argv)
        float flt = 2222.0;
        unsigned int nr_iter = 100;
        useconds_t nr_usec = 0;
+       char *wait_before_first_event_file_path = NULL;
+       char *create_in_main_file_path = NULL;
 
-       while ((option = getopt_long(argc, argv, "i:w:",
+       while ((option = getopt_long(argc, argv, "i:w:b:m:",
                        long_options, &option_index)) != -1) {
                switch (option) {
+               case 'b':
+                       wait_before_first_event_file_path = strdup(optarg);
+                       break;
+               case 'm':
+                       create_in_main_file_path = strdup(optarg);
+                       break;
                case 'i':
                        nr_iter = atoi(optarg);
                        break;
@@ -62,6 +72,23 @@ int main(int argc, char **argv)
                goto end;
        }
 
+       /*
+        * The two following sync points allow for tests to do work after the
+        * app has started BUT before it generates any events.
+        */
+       if (create_in_main_file_path) {
+               ret = create_file(create_in_main_file_path);
+               if (ret != 0) {
+                       goto end;
+               }
+       }
+
+       if (wait_before_first_event_file_path) {
+               ret = wait_on_file(wait_before_first_event_file_path);
+               if (ret != 0) {
+                       goto end;
+               }
+       }
 
        for (i = 0; i < nr_iter; i++) {
                netint = htonl(i);
@@ -87,5 +114,7 @@ int main(int argc, char **argv)
        }
 
 end:
-        exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
+       free(create_in_main_file_path);
+       free(wait_before_first_event_file_path);
+       exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
 }