summaryrefslogtreecommitdiff
path: root/test/signal/sigchld.c
diff options
context:
space:
mode:
Diffstat (limited to 'test/signal/sigchld.c')
-rw-r--r--test/signal/sigchld.c40
1 files changed, 19 insertions, 21 deletions
diff --git a/test/signal/sigchld.c b/test/signal/sigchld.c
index cf82bb6b5..ad2970624 100644
--- a/test/signal/sigchld.c
+++ b/test/signal/sigchld.c
@@ -9,20 +9,30 @@
void test_handler(int signo)
{
- printf("caught signo: %d\n", signo);
- fflush(stdout);
+ write(1, "caught SIGCHLD\n", 15);
+ return;
}
int main(void)
{
pid_t mypid;
- int count = 0;
struct sigaction siga;
static sigset_t sigset;
- mypid = getpid();
+ /* Set up sighandling */
+ sigfillset(&sigset);
+ siga.sa_handler = test_handler;
+ siga.sa_mask = sigset;
+ siga.sa_flags = 0;
+ if (sigaction(SIGCHLD, &siga, (struct sigaction *)NULL) != 0) {
+ fprintf(stderr, "sigaction choked: %s!", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ /* Setup a child process to exercise the sig handling for us */
+ mypid = getpid();
if (fork() == 0) {
int i;
@@ -30,32 +40,20 @@ int main(void)
sleep(2);
kill(mypid, SIGCHLD);
}
- exit(EXIT_SUCCESS);
+ _exit(EXIT_SUCCESS);
}
- sigfillset(&sigset);
-
- siga.sa_handler = test_handler;
- siga.sa_mask = sigset;
- siga.sa_flags = 0;
-
- if (sigaction(SIGCHLD, &siga, (struct sigaction *)NULL) != 0) {
- fprintf(stderr, "sigaction choked: %s!", strerror(errno));
- exit(EXIT_FAILURE);
- }
- printf("waiting for a SIGCHLD\n");
- fflush(stdout);
+ /* Wait for signals */
+ write(1, "waiting for a SIGCHLD\n",22);
for(;;) {
sleep(10);
if (waitpid(-1, NULL, WNOHANG | WUNTRACED) > 0)
break;
- printf("after sleep %d\n", ++count);
- fflush(stdout);
+ write(1, "after sleep\n", 12);
}
- printf("after loop\n");
-
+ printf("Bye-bye! All done!\n");
return 0;
}