diff options
Diffstat (limited to 'lib/libc_r/test/sigwait_d.c')
| -rw-r--r-- | lib/libc_r/test/sigwait_d.c | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/lib/libc_r/test/sigwait_d.c b/lib/libc_r/test/sigwait_d.c deleted file mode 100644 index f3ccd6b..0000000 --- a/lib/libc_r/test/sigwait_d.c +++ /dev/null @@ -1,304 +0,0 @@ -/* - * Copyright (c) 1998 Daniel M. Eischen <eischen@vigrid.com> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Daniel M. Eischen. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY DANIEL M. EISCHEN AND CONTRIBUTORS ``AS IS'' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ -#include <stdlib.h> -#include <unistd.h> - -#include <errno.h> -#include <pthread.h> -#include <signal.h> -#include <stdio.h> -#include <string.h> - -#if defined(_LIBC_R_) -#include <pthread_np.h> -#endif - -static int sigcounts[NSIG + 1]; -static sigset_t wait_mask; -static pthread_mutex_t waiter_mutex; - - -static void * -sigwaiter (void *arg) -{ - int signo; - sigset_t mask; - - /* Block SIGHUP */ - sigemptyset (&mask); - sigaddset (&mask, SIGHUP); - sigprocmask (SIG_BLOCK, &mask, NULL); - - while (sigcounts[SIGINT] == 0) { - if (sigwait (&wait_mask, &signo) != 0) { - fprintf (stderr, - "Unable to wait for signal, errno %d\n", - errno); - exit (1); - } - sigcounts[signo]++; - fprintf (stderr, "Sigwait caught signal %d\n", signo); - - /* Allow the main thread to prevent the sigwait. */ - pthread_mutex_lock (&waiter_mutex); - pthread_mutex_unlock (&waiter_mutex); - } - - pthread_exit (arg); - return (NULL); -} - - -static void -sighandler (int signo) -{ - fprintf (stderr, " -> Signal handler caught signal %d\n", signo); - - if ((signo >= 0) && (signo <= NSIG)) - sigcounts[signo]++; -} - -static void -send_thread_signal (pthread_t tid, int signo) -{ - if (pthread_kill (tid, signo) != 0) { - fprintf (stderr, "Unable to send thread signal, errno %d.\n", - errno); - exit (1); - } -} - -static void -send_process_signal (int signo) -{ - if (kill (getpid (), signo) != 0) { - fprintf (stderr, "Unable to send process signal, errno %d.\n", - errno); - exit (1); - } -} - - -int main (int argc, char *argv[]) -{ - pthread_mutexattr_t mattr; - pthread_attr_t pattr; - pthread_t tid; - void * exit_status; - struct sigaction act; - - /* Initialize our signal counts. */ - memset ((void *) sigcounts, 0, NSIG * sizeof (int)); - - /* Setup our wait mask. */ - sigemptyset (&wait_mask); /* Default action */ - sigaddset (&wait_mask, SIGHUP); /* terminate */ - sigaddset (&wait_mask, SIGINT); /* terminate */ - sigaddset (&wait_mask, SIGQUIT); /* create core image */ - sigaddset (&wait_mask, SIGURG); /* ignore */ - sigaddset (&wait_mask, SIGIO); /* ignore */ - sigaddset (&wait_mask, SIGUSR1); /* terminate */ - - /* Ignore signals SIGHUP and SIGIO. */ - sigemptyset (&act.sa_mask); - sigaddset (&act.sa_mask, SIGHUP); - sigaddset (&act.sa_mask, SIGIO); - act.sa_handler = SIG_IGN; - act.sa_flags = 0; - sigaction (SIGHUP, &act, NULL); - sigaction (SIGIO, &act, NULL); - - /* Install a signal handler for SIGURG */ - sigemptyset (&act.sa_mask); - sigaddset (&act.sa_mask, SIGURG); - act.sa_handler = sighandler; - act.sa_flags = SA_RESTART; - sigaction (SIGURG, &act, NULL); - - /* Install a signal handler for SIGXCPU */ - sigemptyset (&act.sa_mask); - sigaddset (&act.sa_mask, SIGXCPU); - sigaction (SIGXCPU, &act, NULL); - - /* - * Initialize the thread attribute. - */ - if ((pthread_attr_init (&pattr) != 0) || - (pthread_attr_setdetachstate (&pattr, - PTHREAD_CREATE_JOINABLE) != 0)) { - fprintf (stderr, "Unable to initialize thread attributes.\n"); - exit (1); - } - - /* - * Initialize and create a mutex. - */ - if ((pthread_mutexattr_init (&mattr) != 0) || - (pthread_mutex_init (&waiter_mutex, &mattr) != 0)) { - fprintf (stderr, "Unable to create waiter mutex.\n"); - exit (1); - } - - /* - * Create the sigwaiter thread. - */ - if (pthread_create (&tid, &pattr, sigwaiter, NULL) != 0) { - fprintf (stderr, "Unable to create thread.\n"); - exit (1); - } -#if defined(_LIBC_R_) - pthread_set_name_np (tid, "sigwaiter"); -#endif - - /* - * Verify that an ignored signal doesn't cause a wakeup. - * We don't have a handler installed for SIGIO. - */ - send_thread_signal (tid, SIGIO); - sleep (1); - send_process_signal (SIGIO); - sleep (1); - if (sigcounts[SIGIO] != 0) - fprintf (stderr, - "FAIL: sigwait wakes up for ignored signal SIGIO.\n"); - - /* - * Verify that a signal with a default action of ignore, for - * which we have a signal handler installed, will release a sigwait. - */ - send_thread_signal (tid, SIGURG); - sleep (1); - send_process_signal (SIGURG); - sleep (1); - if (sigcounts[SIGURG] != 2) - fprintf (stderr, "FAIL: sigwait doesn't wake up for SIGURG.\n"); - - /* - * Verify that a signal with a default action that terminates - * the process will release a sigwait. - */ - send_thread_signal (tid, SIGUSR1); - sleep (1); - send_process_signal (SIGUSR1); - sleep (1); - if (sigcounts[SIGUSR1] != 2) - fprintf (stderr, - "FAIL: sigwait doesn't wake up for SIGUSR1.\n"); - - /* - * Verify that if we install a signal handler for a previously - * ignored signal, an occurrence of this signal will release - * the (already waiting) sigwait. - */ - - /* Install a signal handler for SIGHUP. */ - sigemptyset (&act.sa_mask); - sigaddset (&act.sa_mask, SIGHUP); - act.sa_handler = sighandler; - act.sa_flags = SA_RESTART; - sigaction (SIGHUP, &act, NULL); - - /* Sending SIGHUP should release the sigwait. */ - send_process_signal (SIGHUP); - sleep (1); - send_thread_signal (tid, SIGHUP); - sleep (1); - if (sigcounts[SIGHUP] != 2) - fprintf (stderr, "FAIL: sigwait doesn't wake up for SIGHUP.\n"); - - /* - * Verify that a pending signal in the waiters mask will - * cause sigwait to return the pending signal. We do this - * by taking the waiters mutex and signaling the waiter to - * release him from the sigwait. The waiter will block - * on taking the mutex, and we can then send the waiter a - * signal which should be added to his pending signals. - * The next time the waiter does a sigwait, he should - * return with the pending signal. - */ - sigcounts[SIGHUP] = 0; - pthread_mutex_lock (&waiter_mutex); - /* Release the waiter from sigwait. */ - send_process_signal (SIGHUP); - sleep (1); - if (sigcounts[SIGHUP] != 1) - fprintf (stderr, "FAIL: sigwait doesn't wake up for SIGHUP.\n"); - /* - * Add SIGHUP to the process pending signals. Since there is - * a signal handler installed for SIGHUP and this signal is - * blocked from the waiter thread and unblocked in the main - * thread, the signal handler should be called once for SIGHUP. - */ - send_process_signal (SIGHUP); - /* Release the waiter thread and allow him to run. */ - pthread_mutex_unlock (&waiter_mutex); - sleep (1); - if (sigcounts[SIGHUP] != 2) - fprintf (stderr, - "FAIL: sigwait doesn't return for pending SIGHUP.\n"); - - /* - * Repeat the above test using pthread_kill and SIGUSR1. - */ - sigcounts[SIGUSR1] = 0; - pthread_mutex_lock (&waiter_mutex); - /* Release the waiter from sigwait. */ - send_thread_signal (tid, SIGUSR1); - sleep (1); - if (sigcounts[SIGUSR1] != 1) - fprintf (stderr, - "FAIL: sigwait doesn't wake up for SIGUSR1.\n"); - /* Add SIGUSR1 to the waiters pending signals. */ - send_thread_signal (tid, SIGUSR1); - /* Release the waiter thread and allow him to run. */ - pthread_mutex_unlock (&waiter_mutex); - sleep (1); - if (sigcounts[SIGUSR1] != 2) - fprintf (stderr, - "FAIL: sigwait doesn't return for pending SIGUSR1.\n"); - - /* - * Verify that we can still kill the process for a signal - * not being waited on by sigwait. - */ - send_process_signal (SIGPIPE); - fprintf (stderr, "FAIL: SIGPIPE did not terminate process.\n"); - - /* - * Wait for the thread to finish. - */ - pthread_join (tid, &exit_status); - - return (0); -} |
