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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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e73284e37f
ThreadSanitizer. - Modified DRD's error reporting code such that it does no longer let the Valgrind core print the Valgrind thread ID but that it now prints the DRD thread ID and name. Updated expected output files where necessary. - Modified drd/test/Makefile.am such that the tests using gcc's built-in functions for atomic memory access such that these are only compiled when the gcc version in use supports these built-in functions. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@10186
57 lines
955 B
C
57 lines
955 B
C
/**
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* @file rwlock_test.c
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*
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* @brief Multithreaded test program that triggers various access patterns
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* without triggering any race conditions.
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*/
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#define _GNU_SOURCE 1
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#include <pthread.h>
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#include <stdio.h>
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static pthread_rwlock_t s_rwlock;
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static int s_counter;
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static void* thread_func(void* arg)
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{
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int i;
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int sum = 0;
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for (i = 0; i < 1000; i++)
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{
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pthread_rwlock_rdlock(&s_rwlock);
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sum += s_counter;
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pthread_rwlock_unlock(&s_rwlock);
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pthread_rwlock_wrlock(&s_rwlock);
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s_counter++;
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pthread_rwlock_unlock(&s_rwlock);
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}
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return 0;
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}
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int main(int argc, char** argv)
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{
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const int thread_count = 10;
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pthread_t tid[thread_count];
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int i;
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pthread_rwlock_init(&s_rwlock, NULL);
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for (i = 0; i < thread_count; i++)
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{
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pthread_create(&tid[i], 0, thread_func, 0);
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}
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for (i = 0; i < thread_count; i++)
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{
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pthread_join(tid[i], 0);
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}
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fprintf(stderr, "Finished.\n");
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return 0;
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}
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