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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, see
- <http://www.gnu.org/licenses/>. */
- #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"
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