add clang

05/tcc-final/tests/tests2/114_bound_signal.c

@@ -0,0 +1,143 @@
+#include <stdio.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <setjmp.h>
+
+static volatile int run = 1;
+static sem_t sem;
+static sem_t sem_child;
+
+static void
+add (int n)
+{
+    int i;
+    int arr[n];
+
+    for (i = 0; i < n; i++) {
+        arr[i]++;
+    }
+    memset (&arr[0], 0, n * sizeof(int));
+}
+
+static void *
+high_load (void *unused)
+{
+    while (run) {
+        add(10);
+        add(20);
+    }
+    return NULL;
+}
+
+static void *
+do_signal (void *unused)
+{
+    while (run) {
+        kill (getpid(), SIGUSR1);
+        while (sem_wait(&sem) < 0 && errno == EINTR);
+    }
+    return NULL;
+}
+
+static void *
+do_fork (void *unused)
+{
+    pid_t pid;
+
+    while (run) {
+        switch ((pid = fork())) {
+        case 0:
+            add(1000);
+            add(2000);
+            exit(0);
+            break;
+        case -1:
+            return NULL;
+        default:
+            while (sem_wait(&sem_child) < 0 && errno == EINTR);
+            wait(NULL);
+            break;
+        }
+    }
+    return NULL;
+}
+
+static void signal_handler(int sig)
+{
+    add(10);
+    add(20);
+    sem_post (&sem);
+}
+
+static void child_handler(int sig)
+{
+    add(10);
+    add(20);
+    sem_post (&sem_child);
+}
+
+int
+main (void)
+{
+    int i;
+    pthread_t id1, id2, id3;
+    struct sigaction act;
+    sigjmp_buf sj;
+    sigset_t m;
+    time_t end;
+
+    memset (&act, 0, sizeof (act));
+    act.sa_handler = signal_handler;
+    act.sa_flags = 0;
+    sigemptyset (&act.sa_mask);
+    sigaction (SIGUSR1, &act, NULL);
+    act.sa_handler = child_handler;
+    sigaction (SIGCHLD, &act, NULL);
+
+    printf ("start\n"); fflush(stdout);
+
+    sem_init (&sem, 0, 0);
+    sem_init (&sem_child, 0, 0);
+    pthread_create(&id1, NULL, high_load, NULL);
+    pthread_create(&id2, NULL, do_signal, NULL);
+#if !defined(__APPLE__)
+    pthread_create(&id3, NULL, do_fork, NULL);
+#endif
+
+    /* sleep does not work !!! */
+    end = time(NULL) + 2;
+    while (time(NULL) < end) ;
+    run = 0;
+
+    pthread_join(id1, NULL);
+    pthread_join(id2, NULL);
+#if !defined(__APPLE__)
+    pthread_join(id3, NULL);
+#endif
+    sem_destroy (&sem);
+    sem_destroy (&sem_child);
+
+    printf ("end\n"); fflush(stdout);
+
+    sigemptyset (&m);
+    sigprocmask (SIG_SETMASK, &m, NULL);
+    if (sigsetjmp (sj, 0) == 0)
+    {
+        sigaddset (&m, SIGUSR1);
+        sigprocmask (SIG_SETMASK, &m, NULL);
+        siglongjmp (sj, 1);
+        printf ("failed");
+        return 1;
+    }
+    sigprocmask (SIG_SETMASK, NULL, &m);
+    if (!sigismember (&m, SIGUSR1))
+        printf ("failed");
+    return 0;
+}