| /* |
| * 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 assertions: |
| * -> pthread_kill() does not make the system unstable |
| * -> no signal get lost when they are not already pending. |
| |
| * The steps are: |
| * -> create 2 threads which send signals heavily to a 3rd thread. |
| * -> Create another thread which sends a signal synchronously to another one. |
| |
| * The test fails if a signal is lost. The other assertion is tested implicitely |
| |
| */ |
| |
| /* 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 <semaphore.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 |
| |
| /********************************************************************************************/ |
| /*********************************** Test cases *****************************************/ |
| /********************************************************************************************/ |
| |
| char do_it = 1; |
| long long iterations = 0; |
| |
| /* Handler for user request to terminate */ |
| void sighdl(int sig) |
| { |
| /* do_it = 0 */ |
| |
| do |
| { |
| do_it = 0; |
| } |
| while (do_it); |
| } |
| |
| void floodsighdl(int sig) |
| { |
| /* Nothing to do */ |
| return ; |
| } |
| |
| /* Signals flood receiver thread */ |
| void* flood_receiver(void *arg) |
| { |
| int ret = 0; |
| /* register the signal handler for this one thread */ |
| |
| struct sigaction sa; |
| sigemptyset (&sa.sa_mask); |
| sa.sa_flags = 0; |
| sa.sa_handler = floodsighdl; |
| |
| if ((ret = sigaction(SIGABRT, &sa, NULL))) { |
| UNRESOLVED(ret, "Unable to register signal handler"); |
| } |
| |
| if ((ret = sigaction(SIGBUS, &sa, NULL))) |
| { |
| UNRESOLVED(ret, "Unable to register signal handler"); |
| } |
| |
| /* Wait for the other threads to terminate */ |
| |
| do { |
| sched_yield(); |
| } while (*(int *) arg); |
| |
| return NULL; |
| } |
| |
| /* Signal flood threads */ |
| void * flooder_1(void * arg) |
| { |
| int ret = 0; |
| |
| while (do_it) |
| { |
| iterations++; |
| ret = pthread_kill(*(pthread_t *) arg , SIGABRT); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Flooder 1 thread got an error"); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| void * flooder_2(void * arg) |
| { |
| int ret = 0; |
| |
| while (do_it) |
| { |
| iterations++; |
| ret = pthread_kill(*(pthread_t *) arg , SIGBUS); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Flooder 1 thread got an error"); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| /* Synchronized threads */ |
| int sync; |
| void syncsighdl(int sig) |
| { |
| /* signal we have been called*/ |
| sync = 1; |
| return ; |
| } |
| |
| void * sync_rec(void * arg) |
| { |
| int ret = 0; |
| |
| struct sigaction sa; |
| sigemptyset (&sa.sa_mask); |
| sa.sa_flags = 0; |
| sa.sa_handler = syncsighdl; |
| |
| if ((ret = sigaction (SIGILL, &sa, NULL))) { |
| UNRESOLVED(ret, "Unable to register signal handler"); |
| } |
| |
| /* wait until termination */ |
| do { |
| sched_yield(); |
| } while (*(int *) arg); |
| |
| return NULL; |
| } |
| |
| void * sync_send(void * arg) |
| { |
| int ret = 0; |
| |
| while (do_it) |
| { |
| /* Disarm the flag */ |
| sync = 0; |
| /* Send the signal */ |
| ret = pthread_kill(*(pthread_t *) arg, SIGILL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to send signal"); |
| } |
| |
| /* Sleep up to 5 sec */ |
| for (ret = 0; (ret < 5) && (sync == 0); ret++) |
| sleep(1); |
| |
| /* Test if signal was received */ |
| if (sync == 0) |
| { |
| FAILED("Signal SIGILL was not delivered within 5 second -- lost?"); |
| } |
| } |
| |
| return NULL; |
| |
| } |
| |
| /* Main function */ |
| int main (int argc, char * argv[]) |
| { |
| int ret = 0; |
| |
| int flooding = 1; |
| pthread_t fl_rec; |
| pthread_t fl_snd1, fl_snd2; |
| |
| int synchro = 1; |
| pthread_t sy_rec; |
| pthread_t sy_snd; |
| |
| struct sigaction sa; |
| |
| /* Initialize output routine */ |
| output_init(); |
| |
| /* 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 |
| |
| ret = pthread_create(&fl_rec, NULL, flood_receiver, &flooding); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Unable to create a thread"); |
| } |
| |
| ret = pthread_create(&fl_snd1, NULL, flooder_1, &fl_rec); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Unable to create a thread"); |
| } |
| |
| ret = pthread_create(&fl_snd2, NULL, flooder_2, &fl_rec); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Unable to create a thread"); |
| } |
| |
| ret = pthread_create(&sy_rec, NULL, sync_rec, &synchro); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Unable to create a thread"); |
| } |
| |
| ret = pthread_create(&sy_snd, NULL, sync_send, &sy_rec); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Unable to create a thread"); |
| } |
| |
| /* Wait the user stops the test */ |
| ret = pthread_join(fl_snd1, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join a thread"); |
| } |
| |
| ret = pthread_join(fl_snd2, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join a thread"); |
| } |
| |
| flooding = 0; |
| ret = pthread_join(fl_rec, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join a thread"); |
| } |
| |
| ret = pthread_join(sy_snd, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join a thread"); |
| } |
| |
| synchro = 0; |
| |
| ret = pthread_join(sy_rec, NULL); |
| |
| if (ret != 0) |
| { |
| UNRESOLVED(ret, "Failed to join a thread"); |
| } |
| |
| /* We've been asked to stop */ |
| output("pthread_kill stress test PASSED -- %llu iterations\n", iterations); |
| |
| PASSED; |
| } |