blob: 3fd64c5628ce9c00c1f5208957c1e34c66954de8 [file] [log] [blame]
/* Needed for older glibcs (2.3 and older, at least) who don't
otherwise "know" about pthread_rwlock_anything or about
PTHREAD_MUTEX_RECURSIVE (amongst things). */
#define _GNU_SOURCE 1
#include <stdio.h>
#include <pthread.h>
#include <assert.h>
#if defined(VGO_darwin)
#define OS_IS_DARWIN 1
#else
#define OS_IS_DARWIN 0
#endif
/* Do trivial stuff with a reader-writer lock. */
int main ( void )
{
int r;
pthread_rwlock_t rwl;
r = pthread_rwlock_init( &rwl, NULL ); assert(r == 0);
r = pthread_rwlock_wrlock( &rwl ); assert(r == 0);
r = pthread_rwlock_unlock( &rwl ); assert(r == 0);
r = pthread_rwlock_rdlock( &rwl ); assert(r == 0);
r = pthread_rwlock_rdlock( &rwl ); assert(r == 0);
r = pthread_rwlock_unlock( &rwl ); assert(r == 0);
r = pthread_rwlock_unlock( &rwl ); assert(r == 0);
/* this should fail - lock is unowned now */
r = pthread_rwlock_unlock( &rwl ); assert(OS_IS_DARWIN || r == 0);
r = pthread_rwlock_destroy( &rwl ); assert(r == 0);
return 0;
}