| /* |
| * Copyright (c) 2004, Bull S.A.. All rights reserved. |
| * Created by: Sebastien Decugis |
| |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., 59 |
| * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| |
| * This stress test aims to test the following assertion: |
| |
| * The init_routine from pthread_once never execute |
| * more or less than once. |
| |
| * The steps are: |
| * -> Create several threads |
| * -> All threads call pthread_once at the same time |
| * -> Check the init_routine executed once. |
| |
| */ |
| |
| /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */ |
| #define _POSIX_C_SOURCE 200112L |
| |
| /********************************************************************************************/ |
| /****************************** standard includes *****************************************/ |
| /********************************************************************************************/ |
| #include <pthread.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <errno.h> |
| #include <signal.h> |
| |
| /********************************************************************************************/ |
| /****************************** Test framework *****************************************/ |
| /********************************************************************************************/ |
| #include "testfrmw.h" |
| #include "testfrmw.c" |
| /* This header is responsible for defining the following macros: |
| * UNRESOLVED(ret, descr); |
| * where descr is a description of the error and ret is an int (error code for example) |
| * FAILED(descr); |
| * where descr is a short text saying why the test has failed. |
| * PASSED(); |
| * No parameter. |
| * |
| * Both three macros shall terminate the calling process. |
| * The testcase shall not terminate in any other maneer. |
| * |
| * The other file defines the functions |
| * void output_init() |
| * void output(char * string, ...) |
| * |
| * Those may be used to output information. |
| */ |
| |
| /********************************************************************************************/ |
| /********************************** Configuration ******************************************/ |
| /********************************************************************************************/ |
| #ifndef VERBOSE |
| #define VERBOSE 1 |
| #endif |
| |
| #define NTHREADS 30 |
| |
| /********************************************************************************************/ |
| /*********************************** Test cases *****************************************/ |
| /********************************************************************************************/ |
| |
| char do_it = 1; |
| long long iterations = 0; |
| |
| /* Handler for user request to terminate */ |
| void sighdl(int sig) |
| { |
| do |
| { |
| do_it = 0; |
| } |
| while (do_it); |
| } |
| |
| pthread_once_t once_ctl; |
| int once_chk; |
| pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER; |
| |
| void init_routine(void) |
| { |
| int ret = 0; |
| ret = pthread_mutex_lock(&mtx); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to lock mutex in initializer"); |
| } |
| |
| once_chk++; |
| |
| ret = pthread_mutex_unlock(&mtx); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to unlock mutex in initializer"); |
| } |
| |
| return ; |
| } |
| |
| /* Thread function */ |
| void * threaded(void * arg) |
| { |
| int ret = 0; |
| |
| /* Wait for all threads being created */ |
| ret = pthread_barrier_wait(arg); |
| |
| if ((ret != 0) && (ret != PTHREAD_BARRIER_SERIAL_THREAD)) |
| { |
| UNRESOLVED(ret, "Barrier wait failed"); |
| } |
| |
| /* Call init routine */ |
| ret = pthread_once(&once_ctl, init_routine); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "pthread_once failed"); |
| } |
| |
| return NULL; |
| } |
| |
| /* Main function */ |
| int main (int argc, char *argv[]) |
| { |
| int ret = 0, i; |
| |
| struct sigaction sa; |
| |
| pthread_barrier_t bar; |
| |
| pthread_t th[ NTHREADS ]; |
| |
| /* Initialize output routine */ |
| output_init(); |
| |
| /* Initialize barrier */ |
| ret = pthread_barrier_init(&bar, NULL, NTHREADS); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to init barrier"); |
| } |
| |
| /* Register the signal handler for SIGUSR1 */ |
| sigemptyset (&sa.sa_mask); |
| |
| sa.sa_flags = 0; |
| |
| sa.sa_handler = sighdl; |
| |
| if ((ret = sigaction (SIGUSR1, &sa, NULL))) |
| { |
| UNRESOLVED(ret, "Unable to register signal handler"); |
| } |
| |
| if ((ret = sigaction (SIGALRM, &sa, NULL))) |
| { |
| UNRESOLVED(ret, "Unable to register signal handler"); |
| } |
| |
| #if VERBOSE > 1 |
| output("[parent] Signal handler registered\n"); |
| |
| #endif |
| |
| while (do_it) |
| { |
| /* Reinitialize once handler & check value */ |
| once_ctl = PTHREAD_ONCE_INIT; |
| once_chk = 0; |
| |
| /* create the threads */ |
| |
| for (i = 0; i < NTHREADS; i++) |
| { |
| ret = pthread_create(&th[ i ], NULL, threaded, &bar); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to create a thread"); |
| } |
| } |
| |
| /* Then join */ |
| for (i = 0; i < NTHREADS; i++) |
| { |
| ret = pthread_join(th[ i ], NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join a thread"); |
| } |
| } |
| |
| /* check the value */ |
| ret = pthread_mutex_lock(&mtx); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to lock mutex in initializer"); |
| } |
| |
| if (once_chk != 1) |
| { |
| output("Control: %d\n", once_chk); |
| FAILED("The initializer function did not execute once"); |
| } |
| |
| ret = pthread_mutex_unlock(&mtx); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to unlock mutex in initializer"); |
| } |
| |
| iterations++; |
| } |
| |
| /* We've been asked to stop */ |
| |
| output("pthread_once stress test PASSED -- %llu iterations\n", iterations); |
| |
| ret = pthread_barrier_destroy(&bar); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to destroy the barrier"); |
| } |
| |
| PASSED; |
| } |