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Diffstat (limited to 'nptl/tst-signal3.c')
| -rw-r--r-- | nptl/tst-signal3.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/nptl/tst-signal3.c b/nptl/tst-signal3.c new file mode 100644 index 0000000000..3de2887545 --- /dev/null +++ b/nptl/tst-signal3.c @@ -0,0 +1,240 @@ +/* Copyright (C) 2002 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 <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); + } + + 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], NULL, tf, (void *) (long int) i) != 0) + { + printf ("create of thread %d failed\n", i); + exit (1); + } + } + + int result = 0; + unsigned int r = 42; + pid_t pid = getpid (); + + for (i = 0; i < ROUNDS; ++i) + { + if (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" |