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-rw-r--r--test/nptl/tst-signal3.c261
1 files changed, 261 insertions, 0 deletions
diff --git a/test/nptl/tst-signal3.c b/test/nptl/tst-signal3.c
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+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+/* Number of different signalss to use. Also is the number of
+ threads. */
+#define N 10
+/* Maximum number of threads in flight at any one time. */
+#define INFLIGHT 5
+/* Number of signals sent in total. */
+#define ROUNDS 10000
+
+
+static int received[N][N];
+static int nsig[N];
+static pthread_t th[N];
+static sem_t sem;
+static pthread_mutex_t lock[N];
+static pthread_t th_main;
+static int sig0;
+
+static void
+handler (int sig)
+{
+ int i;
+ for (i = 0; i < N; ++i)
+ if (pthread_equal (pthread_self (), th[i]))
+ break;
+
+ if (i == N)
+ {
+ if (pthread_equal (pthread_self (), th_main))
+ puts ("signal received by main thread");
+ else
+ printf ("signal received by unknown thread (%lx)\n",
+ (unsigned long int) pthread_self ());
+ exit (1);
+ }
+
+ ++received[i][sig - sig0];
+
+ sem_post (&sem);
+}
+
+
+static void *
+tf (void *arg)
+{
+ int idx = (long int) arg;
+
+ sigset_t ss;
+ sigemptyset (&ss);
+
+ int i;
+ for (i = 0; i <= idx; ++i)
+ sigaddset (&ss, sig0 + i);
+
+ if (pthread_sigmask (SIG_UNBLOCK, &ss, NULL) != 0)
+ {
+ printf ("thread %d: pthread_sigmask failed\n", i);
+ exit (1);
+ }
+
+ pthread_mutex_lock (&lock[idx]);
+
+ return NULL;
+}
+
+
+static int
+do_test (void)
+{
+ /* Block all signals. */
+ sigset_t ss;
+ sigfillset (&ss);
+
+ th_main = pthread_self ();
+
+ sig0 = SIGRTMIN;
+
+ if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0)
+ {
+ puts ("1st pthread_sigmask failed");
+ exit (1);
+ }
+
+ /* Install the handler. */
+ int i;
+ for (i = 0; i < N; ++i)
+ {
+ struct sigaction sa =
+ {
+ .sa_handler = handler,
+ .sa_flags = 0
+ };
+ sigfillset (&sa.sa_mask);
+
+ if (sigaction (sig0 + i, &sa, NULL) != 0)
+ {
+ printf ("sigaction for signal %d failed\n", i);
+ exit (1);
+ }
+ }
+
+ if (sem_init (&sem, 0, INFLIGHT) != 0)
+ {
+ puts ("sem_init failed");
+ exit (1);
+ }
+
+ pthread_attr_t a;
+
+ if (pthread_attr_init (&a) != 0)
+ {
+ puts ("attr_init failed");
+ exit (1);
+ }
+
+ if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)
+ {
+ puts ("attr_setstacksize failed");
+ return 1;
+ }
+
+ for (i = 0; i < N; ++i)
+ {
+ if (pthread_mutex_init (&lock[i], NULL) != 0)
+ {
+ printf ("mutex_init[%d] failed\n", i);
+ }
+
+ if (pthread_mutex_lock (&lock[i]) != 0)
+ {
+ printf ("mutex_lock[%d] failed\n", i);
+ }
+
+ if (pthread_create (&th[i], &a, tf, (void *) (long int) i) != 0)
+ {
+ printf ("create of thread %d failed\n", i);
+ exit (1);
+ }
+ }
+
+ if (pthread_attr_destroy (&a) != 0)
+ {
+ puts ("attr_destroy failed");
+ exit (1);
+ }
+
+ int result = 0;
+ unsigned int r = 42;
+ pid_t pid = getpid ();
+
+ for (i = 0; i < ROUNDS; ++i)
+ {
+ if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0)
+ {
+ printf ("sem_wait round %d failed: %m\n", i);
+ exit (1);
+ }
+
+ int s = rand_r (&r) % N;
+
+ kill (pid, sig0 + s);
+ }
+
+ void *status;
+ for (i = 0; i < N; ++i)
+ {
+ if (pthread_mutex_unlock (&lock[i]) != 0)
+ {
+ printf ("unlock %d failed\n", i);
+ exit (1);
+ }
+
+ if (pthread_join (th[i], &status) != 0)
+ {
+ printf ("join %d failed\n", i);
+ result = 1;
+ }
+ else if (status != NULL)
+ {
+ printf ("%d: result != NULL\n", i);
+ result = 1;
+ }
+ }
+
+ int total = 0;
+ for (i = 0; i < N; ++i)
+ {
+ int j;
+
+ for (j = 0; j <= i; ++j)
+ total += received[i][j];
+
+ for (j = i + 1; j < N; ++j)
+ if (received[i][j] != 0)
+ {
+ printf ("thread %d received signal SIGRTMIN+%d\n", i, j);
+ result = 1;
+ }
+ }
+
+ if (total != ROUNDS)
+ {
+ printf ("total number of handled signals is %d, expected %d\n",
+ total, ROUNDS);
+ result = 1;
+ }
+
+ printf ("A total of %d signals sent and received\n", total);
+ for (i = 0; i < N; ++i)
+ {
+ printf ("thread %2d:", i);
+
+ int j;
+ for (j = 0; j <= i; ++j)
+ {
+ printf (" %5d", received[i][j]);
+ nsig[j] += received[i][j];
+ }
+
+ putchar ('\n');
+
+ }
+
+ printf ("\nTotal :");
+ for (i = 0; i < N; ++i)
+ printf (" %5d", nsig[i]);
+ putchar ('\n');
+
+ return result;
+}
+
+#define TIMEOUT 10
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"