2.5-18.1

1 files changed, 275 insertions, 0 deletions

diff --git a/nptl/tst-robust8.c b/nptl/tst-robust8.c
new file mode 100644
index 0000000000..9c636250d4
--- /dev/null
+++ b/nptl/tst-robust8.c
@@ -0,0 +1,275 @@
+#include <pthread.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/wait.h>
+
+
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#define TIMEOUT 5
+#include "../test-skeleton.c"
+
+
+static int fd;
+#define N 100
+
+static void
+prepare (void)
+{
+  fd = create_temp_file ("tst-robust8", NULL);
+  if (fd == -1)
+    exit (1);
+}
+
+
+#define THESIGNAL SIGKILL
+#define ROUNDS 5
+#define THREADS 9
+
+
+static const struct timespec before = { 0, 0 };
+
+
+static pthread_mutex_t *map;
+
+
+static void *
+tf (void *arg)
+{
+  long int nr = (long int) arg;
+  int fct = nr % 3;
+
+  uint8_t state[N];
+  memset (state, '\0', sizeof (state));
+
+  while (1)
+    {
+      int r = random () % N;
+      if (state[r] == 0)
+	{
+	  int e;
+
+	  switch (fct)
+	    {
+	    case 0:
+	      e = pthread_mutex_lock (&map[r]);
+	      if (e != 0)
+		{
+		  printf ("mutex_lock of %d in thread %ld failed with %d\n",
+			  r, nr, e);
+		  exit (1);
+		}
+	      state[r] = 1;
+	      break;
+	    case 1:
+	      e = pthread_mutex_timedlock (&map[r], &before);
+	      if (e != 0 && e != ETIMEDOUT)
+		{
+		  printf ("\
+mutex_timedlock of %d in thread %ld failed with %d\n",
+			  r, nr, e);
+		  exit (1);
+		}
+	      break;
+	    default:
+	      e = pthread_mutex_trylock (&map[r]);
+	      if (e != 0 && e != EBUSY)
+		{
+		  printf ("mutex_trylock of %d in thread %ld failed with %d\n",
+			  r, nr, e);
+		  exit (1);
+		}
+	      break;
+	    }
+
+	  if (e == EOWNERDEAD)
+	    pthread_mutex_consistent_np (&map[r]);
+
+	  if (e == 0 || e == EOWNERDEAD)
+	    state[r] = 1;
+	}
+      else
+	{
+	  int e = pthread_mutex_unlock (&map[r]);
+	  if (e != 0)
+	    {
+	      printf ("mutex_unlock of %d in thread %ld failed with %d\n",
+		      r, nr, e);
+	      exit (1);
+	    }
+
+	  state[r] = 0;
+	}
+    }
+}
+
+
+static void
+child (int round)
+{
+  for (int thread = 1; thread <= THREADS; ++thread)
+    {
+      pthread_t th;
+      if (pthread_create (&th, NULL, tf, (void *) (long int) thread) != 0)
+	{
+	  printf ("cannot create thread %d in round %d\n", thread, round);
+	  exit (1);
+	}
+    }
+
+  struct timespec ts;
+  ts.tv_sec = 0;
+  ts.tv_nsec = 1000000000 / ROUNDS;
+  while (nanosleep (&ts, &ts) != 0)
+    /* nothing */;
+
+  /* Time to die.  */
+  kill (getpid (), THESIGNAL);
+
+  /* We better never get here.  */
+  abort ();
+}
+
+
+static int
+do_test (void)
+{
+  if (ftruncate (fd, N * sizeof (pthread_mutex_t)) != 0)
+    {
+      puts ("cannot size new file");
+      return 1;
+    }
+
+  map = mmap (NULL, N * sizeof (pthread_mutex_t), PROT_READ | PROT_WRITE,
+	      MAP_SHARED, fd, 0);
+  if (map == MAP_FAILED)
+    {
+      puts ("mapping failed");
+      return 1;
+    }
+
+  pthread_mutexattr_t ma;
+  if (pthread_mutexattr_init (&ma) != 0)
+    {
+      puts ("mutexattr_init failed");
+      return 0;
+    }
+  if (pthread_mutexattr_setrobust_np (&ma, PTHREAD_MUTEX_ROBUST_NP) != 0)
+    {
+      puts ("mutexattr_setrobust failed");
+      return 1;
+    }
+  if (pthread_mutexattr_setpshared (&ma, PTHREAD_PROCESS_SHARED) != 0)
+    {
+      puts ("mutexattr_setpshared failed");
+      return 1;
+    }
+#ifdef ENABLE_PI
+  if (pthread_mutexattr_setprotocol (&ma, PTHREAD_PRIO_INHERIT) != 0)
+    {
+      puts ("pthread_mutexattr_setprotocol failed");
+      return 1;
+    }
+#endif
+
+  for (int round = 1; round <= ROUNDS; ++round)
+    {
+      for (int n = 0; n < N; ++n)
+	{
+	  int e = pthread_mutex_init (&map[n], &ma);
+	  if (e == ENOTSUP)
+	    {
+#ifdef ENABLE_PI
+	      puts ("cannot support pshared robust PI mutexes");
+#else
+	      puts ("cannot support pshared robust mutexes");
+#endif
+	      return 0;
+	    }
+	  if (e != 0)
+	    {
+	      printf ("mutex_init %d in round %d failed\n", n + 1, round);
+	      return 1;
+	    }
+	}
+
+      pid_t p = fork ();
+      if (p == -1)
+	{
+	  printf ("fork in round %d failed\n", round);
+	  return 1;
+	}
+      if (p == 0)
+	child (round);
+
+      int status;
+      if (TEMP_FAILURE_RETRY (waitpid (p, &status, 0)) != p)
+	{
+	  printf ("waitpid in round %d failed\n", round);
+	  return 1;
+	}
+      if (!WIFSIGNALED (status))
+	{
+	  printf ("child did not die of a signal in round %d\n", round);
+	  return 1;
+	}
+      if (WTERMSIG (status) != THESIGNAL)
+	{
+	  printf ("child did not die of signal %d in round %d\n",
+		  THESIGNAL, round);
+	  return 1;
+	}
+
+      for (int n = 0; n < N; ++n)
+	{
+	  int e = pthread_mutex_lock (&map[n]);
+	  if (e != 0 && e != EOWNERDEAD)
+	    {
+	      printf ("mutex_lock %d failed in round %d\n", n + 1, round);
+	      return 1;
+	    }
+	}
+
+      for (int n = 0; n < N; ++n)
+	if (pthread_mutex_unlock (&map[n]) != 0)
+	  {
+	    printf ("mutex_unlock %d failed in round %d\n", n + 1, round);
+	    return 1;
+	  }
+
+      for (int n = 0; n < N; ++n)
+	{
+	  int e = pthread_mutex_destroy (&map[n]);
+	  if (e != 0)
+	    {
+	      printf ("mutex_destroy %d in round %d failed with %d\n",
+		      n + 1, round, e);
+	      printf("nusers = %d\n", (int) map[n].__data.__nusers);
+	      return 1;
+	    }
+	}
+    }
+
+  if (pthread_mutexattr_destroy (&ma) != 0)
+    {
+      puts ("mutexattr_destroy failed");
+      return 1;
+    }
+
+  if (munmap (map, N * sizeof (pthread_mutex_t)) != 0)
+    {
+      puts ("munmap failed");
+      return 1;
+    }
+
+  return 0;
+}