nanocoat/tests/testSpinLock.c

   1 /* -*- Mode: C; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the Mozilla Public License Version 2.0.
   7 // See license.mkd for licensing and copyright information.
   8 // -------------------------------------------------------------------------*/
   9
  10 #include <string.h>
  11
  12 #include "test.h"
  13 #include "proto.h"
  14 #include "mock.h"
  15 #include "unit.h"
  16 #include "sjme/multithread.h"
  17
  18 /**
  19  * Tests spinlocks.
  20  *
  21  * @since 2024/07/31
  22  */
  23 SJME_TEST_DECLARE(testSpinLock)
  24 {
  25         sjme_errorCode error;
  26         sjme_thread_spinLock lock;
  27         sjme_jint count;
  28
  29         /* Zero out lock state. */
  30         memset(&lock, 0, sizeof(lock));
  31
  32         /* Lock. */
  33         error = sjme_thread_spinLockGrab(&lock);
  34         sjme_unit_equalI(test, error, SJME_ERROR_NONE,
  35                 "Spin lock grab failed?");
  36         sjme_unit_equalI(test, sjme_atomic_sjme_jint_get(&lock.count), 1,
  37                 "Spin lock count not one?");
  38
  39         /* Lock. */
  40         error = sjme_thread_spinLockGrab(&lock);
  41         sjme_unit_equalI(test, error, SJME_ERROR_NONE,
  42                 "Spin lock grab again failed?");
  43         sjme_unit_equalI(test, sjme_atomic_sjme_jint_get(&lock.count), 2,
  44                 "Spin lock count not two?");
  45
  46         /* Unlock. */
  47         count = -2;
  48         error = sjme_thread_spinLockRelease(&lock, &count);
  49         sjme_unit_equalI(test, error, SJME_ERROR_NONE,
  50                 "Spin lock release failed?");
  51         sjme_unit_equalI(test, count, 1,
  52                 "Unlock count is not one?");
  53         sjme_unit_equalI(test, sjme_atomic_sjme_jint_get(&lock.count), 1,
  54                 "Spin lock count not one?");
  55
  56         /* Unlock. */
  57         count = -2;
  58         error = sjme_thread_spinLockRelease(&lock, &count);
  59         sjme_unit_equalI(test, error, SJME_ERROR_NONE,
  60                 "Spin lock release again failed?");
  61         sjme_unit_equalI(test, count, 0,
  62                 "Unlock count is not zero?");
  63         sjme_unit_equalI(test, sjme_atomic_sjme_jint_get(&lock.count), 0,
  64                 "Spin lock count not zero?");
  65
  66         /* Test done. */
  67         return SJME_TEST_RESULT_PASS;
  68 }