mingw-w64-libraries/winpthreads/tests/pthread_mutex/normal-static.c

/*
   Copyright (c) 2026 mingw-w64 project

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   The above copyright notice and this permission notice shall be included in
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   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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*/

#include "test.h"

/**
 * Test Summary:
 *
 * This test is equivalent to `normal-basic.c`, except it uses statically
 * initialized `pthread_mutex_t` object.
 */

int main(void)
{
  pthread_mutex_t mutex = PTHREAD_NORMAL_MUTEX_INITIALIZER;

  assert(pthread_mutex_lock(&mutex) == 0);
  assert(pthread_mutex_trylock(&mutex) == EBUSY);
  assert(pthread_mutex_destroy(&mutex) == EBUSY);
  assert(pthread_mutex_consistent(&mutex) == EINVAL);
  assert(pthread_mutex_unlock(&mutex) == 0);
  /**
   * POSIX states that calling `pthread_mutex_unlock` on NORMAL mutex that is
   * not owned by the calling thread is undefined behavior.
   *
   * Our implementation for NORMAL mutexes does not check ownership at all,
   * so call to `pthread_mutex_unlock` on a valid NORMAL mutex always succeeds.
   */
  assert(pthread_mutex_unlock(&mutex) == 0);
  assert(pthread_mutex_destroy(&mutex) == 0);
  assert(mutex == (pthread_mutex_t)0);
  assert(pthread_mutex_lock(&mutex) == EINVAL);

  return 0;
}