mingw-w64-libraries/winpthreads/tests/pthread_mutex/attr-prioceiling.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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   DEALINGS IN THE SOFTWARE.
*/

#include "test.h"

/**
 * Test Summary:
 *
 * Test functions `pthread_mutexattr_setprioceiling` and
 * `pthread_mutexattr_getprioceiling`.
 */

static void DoTest (int value, int expectedValue, int expectedReturn1, int expectedReturn2) {
  pthread_mutexattr_t mutexAttr;
  pthread_mutex_t mutex;

  assert (pthread_mutexattr_init (&mutexAttr) == 0);
  assert (pthread_mutexattr_setprioceiling (&mutexAttr, value) == expectedReturn1);
  assert (pthread_mutexattr_getprioceiling (&mutexAttr, &value) == 0);
  assert (value == expectedValue);
  assert (pthread_mutex_init (&mutex, &mutexAttr) == expectedReturn2);
  if (expectedReturn2 == 0) {
    assert (pthread_mutex_destroy (&mutex) == 0);
  }
  assert (pthread_mutexattr_destroy (&mutexAttr) == 0);
}

int main (void) {
  /**
   * Any valid `THRAED_PRIORITY_*` value can be set for prioceiling attribute.
   *
   * Currently, it has no effect; POSIX realtime extensions are not implemented.
   */
  for (int value = THREAD_PRIORITY_IDLE; value <= THREAD_PRIORITY_TIME_CRITICAL; ++value) {
    DoTest (value, value, 0, 0);
  }

  /**
   * Try setting an invalid value; default attribute value must be used.
   */
  DoTest (0xFF, THREAD_PRIORITY_NORMAL, EINVAL, 0);

  return 0;
}