glfw/src/win32_thread.c
Camilla Löwy 35f3b58c21 Win32: Make thread functions backend independent
This is work towards allowing the Null backend to build for Windows
using the Win32 threading API, without the Win32 backend being enabled.
2021-10-12 12:54:36 +02:00

99 lines
3.1 KiB
C

//========================================================================
// GLFW 3.4 Win32 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
// Please use C89 style variable declarations in this file because VS 2010
//========================================================================
#include "internal.h"
#include <assert.h>
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls)
{
assert(tls->win32.allocated == GLFW_FALSE);
tls->win32.index = TlsAlloc();
if (tls->win32.index == TLS_OUT_OF_INDEXES)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to allocate TLS index");
return GLFW_FALSE;
}
tls->win32.allocated = GLFW_TRUE;
return GLFW_TRUE;
}
void _glfwPlatformDestroyTls(_GLFWtls* tls)
{
if (tls->win32.allocated)
TlsFree(tls->win32.index);
memset(tls, 0, sizeof(_GLFWtls));
}
void* _glfwPlatformGetTls(_GLFWtls* tls)
{
assert(tls->win32.allocated == GLFW_TRUE);
return TlsGetValue(tls->win32.index);
}
void _glfwPlatformSetTls(_GLFWtls* tls, void* value)
{
assert(tls->win32.allocated == GLFW_TRUE);
TlsSetValue(tls->win32.index, value);
}
GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex)
{
assert(mutex->win32.allocated == GLFW_FALSE);
InitializeCriticalSection(&mutex->win32.section);
return mutex->win32.allocated = GLFW_TRUE;
}
void _glfwPlatformDestroyMutex(_GLFWmutex* mutex)
{
if (mutex->win32.allocated)
DeleteCriticalSection(&mutex->win32.section);
memset(mutex, 0, sizeof(_GLFWmutex));
}
void _glfwPlatformLockMutex(_GLFWmutex* mutex)
{
assert(mutex->win32.allocated == GLFW_TRUE);
EnterCriticalSection(&mutex->win32.section);
}
void _glfwPlatformUnlockMutex(_GLFWmutex* mutex)
{
assert(mutex->win32.allocated == GLFW_TRUE);
LeaveCriticalSection(&mutex->win32.section);
}