igt/gem_gtt_hog: Convert opencoded fork()/wait() over to igt_fork()

No reason not to use the common infrastructure here.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/tests/gem_gtt_hog.c b/tests/gem_gtt_hog.c
index 5d47540..9f1b4f6 100644 (file)
--- a/tests/gem_gtt_hog.c
+++ b/tests/gem_gtt_hog.c
@@ -150,7 +150,6 @@ static void run(data_t *data, int child)
        munmap(ptr, size);
 
        igt_assert(x == canary);
-       exit(0);
 }
 
 igt_simple_main
@@ -158,7 +157,6 @@ igt_simple_main
        struct timeval start, end;
        pid_t children[64];
        data_t data = {};
-       int n;
 
        /* check for an intel gpu before goint nuts. */
        int fd = drm_open_any();
@@ -171,22 +169,11 @@ igt_simple_main
        data.intel_gen = intel_gen(data.devid);
 
        gettimeofday(&start, NULL);
-       for (n = 0; n < ARRAY_SIZE(children); n++) {
-               switch ((children[n] = fork())) {
-               case -1: igt_assert(0);
-               case 0: run(&data, n); break;
-               default: break;
-               }
-       }
-
-       for (n = 0; n < ARRAY_SIZE(children); n++) {
-               int status = -1;
-               while (waitpid(children[n], &status, 0) == -1 &&
-                      errno == -EINTR)
-                       ;
-               igt_assert(status == 0);
-       }
+       igt_fork(child, ARRAY_SIZE(children))
+               run(&data, child);
+       igt_waitchildren();
        gettimeofday(&end, NULL);
+
        igt_info("Time to execute %lu children:         %7.3fms\n",
                 ARRAY_SIZE(children), elapsed(&start, &end) / 1000);
 }