| /* |
| * Copyright (c) 2005, 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 sample test aims to check the following assertion: |
| * |
| * If several threads are waiting for a signal and this signal is generated |
| * for a specific thread, only this thread is unblocked. |
| |
| * The steps are: |
| * -> mask SIGUSR1 |
| * -> create several threads which sigwait for SIGUSR1 |
| * -> pthread_kill one of the threads |
| * -> Check than this thread has been awaken. |
| |
| * The test fails if the thread is not awaken. |
| |
| */ |
| |
| /* 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 <signal.h> |
| #include <errno.h> |
| |
| /******************************************************************************/ |
| /*************************** Test framework *******************************/ |
| /******************************************************************************/ |
| #include "../testfrmw/testfrmw.h" |
| #include "../testfrmw/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 5 |
| |
| /******************************************************************************/ |
| /*************************** Test case ***********************************/ |
| /******************************************************************************/ |
| |
| int n_awaken = 0; |
| pthread_t last_awaken; |
| sigset_t setusr; |
| |
| /* Thread function */ |
| void * threaded(void * arg) |
| { |
| int ret; |
| int sig; |
| |
| /* The signal is already masked, because inherited from the parent */ |
| |
| /* wait for the signal */ |
| ret = sigwait(&setusr, &sig); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "failed to wait for signal in thread"); |
| } |
| |
| n_awaken++; |
| |
| last_awaken = pthread_self(); |
| |
| /* quit */ |
| return NULL; |
| } |
| |
| /* The main test function. */ |
| int main(int argc, char * argv[]) |
| { |
| int ret, i; |
| pthread_t ch[ NTHREADS ]; |
| |
| /* Initialize output */ |
| output_init(); |
| |
| /* Set the signal mask */ |
| ret = sigemptyset(&setusr); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to empty signal set"); |
| } |
| |
| ret = sigaddset(&setusr, SIGUSR1); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "failed to add SIGUSR1 to signal set"); |
| } |
| |
| ret = pthread_sigmask(SIG_BLOCK, &setusr, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to block SIGUSR1"); |
| } |
| |
| /* Create the children */ |
| |
| for (i = 0; i < NTHREADS; i++) |
| { |
| ret = pthread_create(&ch[ i ], NULL, threaded, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to create a thread"); |
| } |
| } |
| |
| /* raise the signal */ |
| ret = pthread_kill(ch[ 0 ], SIGUSR1); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to raise the signal"); |
| } |
| |
| sleep(1); |
| |
| if (n_awaken != 1) |
| { |
| output("%d threads were awaken\n", n_awaken); |
| FAILED("Unexpected number of threads awaken"); |
| } |
| |
| if (!pthread_equal(last_awaken, ch[0])) |
| { |
| FAILED("The awaken thread is not the signal target one."); |
| } |
| |
| /* Wake other threads */ |
| for (i = 1; i < NTHREADS ; i++) |
| { |
| ret = pthread_kill(ch[ i ], SIGUSR1); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to raise the signal"); |
| } |
| } |
| |
| /* Wait for child thread termination */ |
| for (i = 0; i < NTHREADS; i++) |
| { |
| ret = pthread_join(ch[ i ], NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join the thread"); |
| } |
| } |
| |
| /* Test passed */ |
| #if VERBOSE > 0 |
| |
| output("Test passed\n"); |
| |
| #endif |
| |
| PASSED; |
| } |