github.com/Konstantin8105/c4go@v0.0.0-20240505174241-768bb1c65a51/tests/raylib/external/glfw/src/posix_thread.c (about)

     1  //========================================================================
     2  // GLFW 3.4 POSIX - www.glfw.org
     3  //------------------------------------------------------------------------
     4  // Copyright (c) 2002-2006 Marcus Geelnard
     5  // Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org>
     6  //
     7  // This software is provided 'as-is', without any express or implied
     8  // warranty. In no event will the authors be held liable for any damages
     9  // arising from the use of this software.
    10  //
    11  // Permission is granted to anyone to use this software for any purpose,
    12  // including commercial applications, and to alter it and redistribute it
    13  // freely, subject to the following restrictions:
    14  //
    15  // 1. The origin of this software must not be misrepresented; you must not
    16  //    claim that you wrote the original software. If you use this software
    17  //    in a product, an acknowledgment in the product documentation would
    18  //    be appreciated but is not required.
    19  //
    20  // 2. Altered source versions must be plainly marked as such, and must not
    21  //    be misrepresented as being the original software.
    22  //
    23  // 3. This notice may not be removed or altered from any source
    24  //    distribution.
    25  //
    26  //========================================================================
    27  // It is fine to use C99 in this file because it will not be built with VS
    28  //========================================================================
    29  
    30  #include "internal.h"
    31  
    32  #include <assert.h>
    33  #include <string.h>
    34  
    35  
    36  //////////////////////////////////////////////////////////////////////////
    37  //////                       GLFW platform API                      //////
    38  //////////////////////////////////////////////////////////////////////////
    39  
    40  GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls)
    41  {
    42      assert(tls->posix.allocated == GLFW_FALSE);
    43  
    44      if (pthread_key_create(&tls->posix.key, NULL) != 0)
    45      {
    46          _glfwInputError(GLFW_PLATFORM_ERROR,
    47                          "POSIX: Failed to create context TLS");
    48          return GLFW_FALSE;
    49      }
    50  
    51      tls->posix.allocated = GLFW_TRUE;
    52      return GLFW_TRUE;
    53  }
    54  
    55  void _glfwPlatformDestroyTls(_GLFWtls* tls)
    56  {
    57      if (tls->posix.allocated)
    58          pthread_key_delete(tls->posix.key);
    59      memset(tls, 0, sizeof(_GLFWtls));
    60  }
    61  
    62  void* _glfwPlatformGetTls(_GLFWtls* tls)
    63  {
    64      assert(tls->posix.allocated == GLFW_TRUE);
    65      return pthread_getspecific(tls->posix.key);
    66  }
    67  
    68  void _glfwPlatformSetTls(_GLFWtls* tls, void* value)
    69  {
    70      assert(tls->posix.allocated == GLFW_TRUE);
    71      pthread_setspecific(tls->posix.key, value);
    72  }
    73  
    74  GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex)
    75  {
    76      assert(mutex->posix.allocated == GLFW_FALSE);
    77  
    78      if (pthread_mutex_init(&mutex->posix.handle, NULL) != 0)
    79      {
    80          _glfwInputError(GLFW_PLATFORM_ERROR, "POSIX: Failed to create mutex");
    81          return GLFW_FALSE;
    82      }
    83  
    84      return mutex->posix.allocated = GLFW_TRUE;
    85  }
    86  
    87  void _glfwPlatformDestroyMutex(_GLFWmutex* mutex)
    88  {
    89      if (mutex->posix.allocated)
    90          pthread_mutex_destroy(&mutex->posix.handle);
    91      memset(mutex, 0, sizeof(_GLFWmutex));
    92  }
    93  
    94  void _glfwPlatformLockMutex(_GLFWmutex* mutex)
    95  {
    96      assert(mutex->posix.allocated == GLFW_TRUE);
    97      pthread_mutex_lock(&mutex->posix.handle);
    98  }
    99  
   100  void _glfwPlatformUnlockMutex(_GLFWmutex* mutex)
   101  {
   102      assert(mutex->posix.allocated == GLFW_TRUE);
   103      pthread_mutex_unlock(&mutex->posix.handle);
   104  }
   105