From c89e18ec972f165650a453aa8bd8b30309e323e6 Mon Sep 17 00:00:00 2001
From: toni <toni@devlap.local>
Date: Tue, 13 Oct 2015 09:01:50 +0200
Subject: added semaphore tests
---
tests/semtest.c | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
create mode 100644 tests/semtest.c
(limited to 'tests/semtest.c')
diff --git a/tests/semtest.c b/tests/semtest.c
new file mode 100644
index 0000000..7968127
--- /dev/null
+++ b/tests/semtest.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <semaphore.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+
+
+sem_t *mysem = NULL;
+pid_t child;
+
+#define LOG(cmd) fprintf(stderr, "%s\n", cmd);
+
+int main(int argc, char **argv) {
+ sem_unlink("/mysem");
+ if ( (mysem = sem_open("/mysem", O_CREAT, S_IRUSR | S_IWUSR, 1)) != NULL ) {
+ if ( (child = fork()) == 0 ) {
+ /* child */
+ sleep(1);
+ LOG("child: sempost");
+ sem_post(mysem);
+ LOG("child: done");
+ sleep(1);
+ exit(0);
+ } else if (child > 0) {
+ /* parent */
+ LOG("parent: semwait");
+ sem_wait(mysem);
+ LOG("parent: waitpid");
+ waitpid(child, NULL, 0);
+ } else if (child < 0) {
+ perror("fork");
+ }
+ } else {
+ sem_close(mysem);
+ exit(1);
+ }
+ exit(0);
+}
+
--
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