/*
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
#include <pthread.h>

#ifdef __APPLE__
// Spinlocks do not exist on mac
typedef struct {
  int __whatever;
} pthread_spinlock_t;
extern int pthread_spin_init(pthread_spinlock_t* __lock, int __pshared);
extern int pthread_spin_destroy(pthread_spinlock_t* __lock);
extern int pthread_spin_lock(pthread_spinlock_t* __lock);
extern int pthread_spin_trylock(pthread_spinlock_t* __lock);
extern int pthread_spin_unlock(pthread_spinlock_t* __lock);
#endif

void spinlock_double_lock_bad(pthread_spinlock_t* m) {
  pthread_spin_lock(m);
  pthread_spin_lock(m);
}

void spinlock_double_lock_bad2() {
  pthread_spinlock_t m;
  spinlock_double_lock_bad(&m);
}