source: benchmark/mutexC/pthreads.c @ b8ab91a

#include <pthread.h>
#include <stdio.h>
#include <stdbool.h>

#include "../bench.h"

pthread_mutex_t mutex;

volatile bool go = false;

void call() {
        go = true;
        for ( size_t i = 0; i < times; i += 1 ) {
                pthread_mutex_lock( &mutex );
                pthread_mutex_unlock( &mutex );
        }
        go = false;
}
void * thread_main( __attribute__((unused)) void * arg ) {
        while ( ! go );
        while ( go ) {
                pthread_mutex_lock( &mutex );
                pthread_mutex_unlock( &mutex );
        }
        return NULL;
}
int main( int argc, char * argv[] ) {
        BENCH_START()
        pthread_t thread;
        if ( pthread_create( &thread, NULL, thread_main, NULL ) < 0 ) {
                perror( "failure" );
                return EXIT_FAILURE;
        }
        BENCH(
                call(),
                result
        )
        printf( "%g\n", result );
        if ( pthread_join( thread, NULL ) < 0 ) {
                perror( "failure" );
                return EXIT_FAILURE;
        }
}

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