Implement pthread_barrier calls in sthread, and test them in McMini

[simgrid.git] / teshsuite / mc / mcmini / simple_barrier_with_threads_deadlock.c

diff --git a/teshsuite/mc/mcmini/simple_barrier_with_threads_deadlock.c b/teshsuite/mc/mcmini/simple_barrier_with_threads_deadlock.c
new file mode 100644 (file)
index 0000000..f63f4ba
--- /dev/null
+++ b/teshsuite/mc/mcmini/simple_barrier_with_threads_deadlock.c
@@ -0,0 +1,43 @@
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int THREAD_NUM; 
+int DEBUG = 0;
+
+pthread_barrier_t barrier;
+pthread_t *thread;
+
+static void * thread_doit(void *unused)
+{
+    if(DEBUG) printf("Thread %lu: Waiting at barrier\n", (unsigned long)pthread_self());
+    pthread_barrier_wait(&barrier);
+    if(DEBUG) printf("Thread %lu: Passed the barrier\n", (unsigned long)pthread_self());
+    return NULL;
+}
+
+int main(int argc, char* argv[]) {
+    if(argc != 3){
+        printf("Usage: %s THREAD_NUM DEBUG_FLAG\n", argv[0]);
+        return 1;
+    }
+
+    THREAD_NUM = atoi(argv[1]);
+    DEBUG = atoi(argv[2]);
+
+    thread = (pthread_t*) malloc(THREAD_NUM * sizeof(pthread_t));
+
+    pthread_barrier_init(&barrier, NULL, THREAD_NUM);
+    for(int i = 0; i < THREAD_NUM; i++) {
+        pthread_create(&thread[i], NULL, &thread_doit, NULL);
+    }
+
+    pthread_barrier_wait(&barrier);
+
+    for(int i = 0; i < THREAD_NUM; i++) {
+        pthread_join(thread[i], NULL);
+    }
+
+    free(thread);
+    return 0;
+}