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

#include "bench.h"

volatile int go = 0;

pthread_cond_t c;
pthread_mutex_t m;

void __attribute__((noinline)) call() {
	pthread_mutex_lock(&m);
	pthread_cond_signal(&c);
	pthread_mutex_unlock(&m);
}

int  __attribute__((noinline)) wait() {
	pthread_mutex_lock(&m);
	go = 1;
	BENCH(
		for (size_t i = 0; i < times; i++) {
			pthread_cond_wait(&c, &m);
		},
		result
	)
	printf( "%g\n", result );
	go = 0;
	pthread_mutex_unlock(&m);
	return 0;
}

void* thread_main(__attribute__((unused)) void * arg ) {
	while(go == 0) { sched_yield(); }
	while(go == 1) { call(); }
	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 1;
	}
	wait();
	if (pthread_join( thread, NULL) < 0) {
		perror( "failure" );
		return 1;
	}
}

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