mutex.cpp

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/*
 * This file is part of the µOS++ project (https://micro-os-plus.github.io/).
 * Copyright (c) 2016-2025 Liviu Ionescu. All rights reserved.
 *
 * Permission to use, copy, modify, and/or distribute this software
 * for any purpose is hereby granted, under the terms of the MIT license.
 *
 * If a copy of the license was not distributed with this file, it can
 * be obtained from https://opensource.org/licenses/mit.
 */
 
#include <cmsis-plus/estd/mutex>
 
// ----------------------------------------------------------------------------
 
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wc++98-compat"
#endif
 
// ----------------------------------------------------------------------------
 
namespace os
{
  namespace estd
  {
    // ========================================================================
 
    void
    mutex::lock ()
    {
      os::rtos::result_t res;
      res = nm_.lock ();
      if (res != os::rtos::result::ok)
        {
          os::estd::__throw_cmsis_error (static_cast<int> (res),
                                         "mutex lock failed");
        }
    }
 
    bool
    mutex::try_lock ()
    {
      os::rtos::result_t res;
      res = nm_.try_lock ();
      if (res == os::rtos::result::ok)
        {
          return true;
        }
      else if (res == EWOULDBLOCK)
        {
          return false;
        }
 
      os::estd::__throw_cmsis_error (static_cast<int> (res),
                                     "mutex try_lock failed");
      // return false;
    }
 
    void
    mutex::unlock ()
    {
      os::rtos::result_t res;
      res = nm_.unlock ();
      if (res != os::rtos::result::ok)
        {
          os::estd::__throw_cmsis_error (static_cast<int> (res),
                                         "mutex unlock failed");
        }
    }
 
    // ========================================================================
 
    void
    recursive_mutex::lock ()
    {
      os::rtos::result_t res;
      res = nm_.lock ();
      if (res != os::rtos::result::ok)
        {
          os::estd::__throw_cmsis_error (static_cast<int> (res),
                                         "recursive_mutex lock failed");
        }
    }
 
    bool
    recursive_mutex::try_lock () noexcept
    {
      os::rtos::result_t res;
      res = nm_.try_lock ();
      if (res == os::rtos::result::ok)
        {
          return true;
        }
      else if (res == EWOULDBLOCK)
        {
          return false;
        }
 
      os::estd::__throw_cmsis_error (static_cast<int> (res),
                                     "recursive_mutex try_lock failed");
      // return false;
    }
 
    void
    recursive_mutex::unlock ()
    {
      os::rtos::result_t res;
      res = nm_.unlock ();
      if (res != os::rtos::result::ok)
        {
          os::estd::__throw_cmsis_error (static_cast<int> (res),
                                         "recursive_mutex unlock failed");
        }
    }
 
    // ========================================================================
 
  } /* namespace estd */
} /* namespace os */
 
// ----------------------------------------------------------------------------