// commit 12e1e324683a1d381b7f15dd36c99b37dd44d940 2015-04-10
// robust mutex should work with detached threads too
#include <pthread.h>
#include <string.h>
#include <errno.h>
#include "test.h"

#define TX(r,f,x) ( ((r)=(f))==x || (t_error(#f" failed: got %d \"%s\" want %d \"%s\"\n", r, strerror(r), x, strerror(x)), 0) )
#define T(r,f) TX(r,f,0)

static pthread_barrier_t barrier2;

static void *start_lock(void *arg)
{
	pthread_mutex_lock(arg);
	pthread_barrier_wait(&barrier2);
	return 0;
}

int main(void)
{
	pthread_t td;
	int r;
	pthread_mutexattr_t mtx_a;
	pthread_mutex_t mtx;

	T(r, pthread_barrier_init(&barrier2, 0, 2));
	T(r, pthread_mutexattr_init(&mtx_a));
	T(r, pthread_mutexattr_setrobust(&mtx_a, PTHREAD_MUTEX_ROBUST));
	T(r, pthread_mutexattr_setpshared(&mtx_a, PTHREAD_PROCESS_SHARED));
	T(r, pthread_mutex_init(&mtx, &mtx_a));
	T(r, pthread_create(&td, 0, start_lock, &mtx));
	T(r, pthread_detach(td));
	pthread_barrier_wait(&barrier2);
	TX(r, pthread_mutex_trylock(&mtx), EOWNERDEAD);
	return t_status;
}