1 files changed, 43 insertions, 0 deletions
diff --git a/tests/semtest2.c b/tests/semtest2.c
new file mode 100644
index 0000000..c015df8
--- /dev/null
+++ b/tests/semtest2.c
@@ -0,0 +1,43 @@
+#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>
+
+#include "../ui_ipc.h"
+
+pid_t child;
+
+#define LOG(cmd) fprintf(stderr, "%s\n", cmd);
+
+int main(int argc, char **argv) {
+  if (ui_ipc_init(1) != 0) {
+    perror("ui_ipc_init");
+    exit(1);
+  }
+  if ( (child = fork()) == 0 ) {
+    /* child */
+    sleep(1);
+    LOG("child: sempost");
+    ui_ipc_sempost(SEM_RD);
+    LOG("child: done");
+    sleep(1);
+    exit(0);
+  } else if (child > 0) {
+    /* parent */
+    LOG("parent: semwait");
+    ui_ipc_semwait(SEM_RD);
+    LOG("parent: waitpid");
+    waitpid(child, NULL, 0);
+  } else if (child < 0) {
+    perror("fork");
+    exit(1);
+  }
+  ui_ipc_free(1);
+
+  exit(0);
+}
+