#include <stdio.h>
#include <pthread.h>
#include <errno.h>
#include <err.h>
#include <inttypes.h>
#include <unistd.h>

#define PTHREAD_REQUIRE_STATUS(a, b) if ((errno = a) != b) \
				err(1, "failed %s", # a)
#define PTHREAD_REQUIRE(a) if ((errno = a) != 0) \
				err(1, "failed %s", # a)
#define ATF_REQUIRE_EQ(a, b) if (a != b) \
				errx(1, "%s != %s", # a, # b)
#define ATF_REQUIRE(a) if (!(a)) \
				errx(1, "%s failed", # a)

static pthread_mutex_t mutex;
static pthread_mutex_t static_mutex = PTHREAD_MUTEX_INITIALIZER;
static int global_x;

/* This code is used for verifying non-timed specific code */
static struct timespec ts_lengthy = {
	.tv_sec = UINT16_MAX,
	.tv_nsec = 0
};

/* This code is used for verifying timed-only specific code */
static struct timespec ts_shortlived = {
	.tv_sec = 0,
	.tv_nsec = 120
};

int
main(void)
{
	PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));

	printf("Before acquiring timed-mutex with timedlock\n");
	PTHREAD_REQUIRE(pthread_mutex_timedlock(&mutex, &ts_lengthy));

	printf("Before endeavor to reacquire timed-mutex (timeout expected)\n");
	PTHREAD_REQUIRE_STATUS(pthread_mutex_timedlock(&mutex, &ts_shortlived),
	    ETIMEDOUT);

	printf("Unlocking timed-mutex\n");
	PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
	return 0;
}