WinRT: merged with SDL 2.0.0 codebase (aka. SDL hg rev d4ce48ff30d1)

src/thread/stdcpp/SDL_sysmutex.cpp

@@ -0,0 +1,113 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.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.
+*/
+#include "SDL_config.h"
+
+extern "C" {
+#include "SDL_thread.h"
+#include "SDL_systhread_c.h"
+#include "SDL_log.h"
+}
+
+#include <exception>
+
+#include "SDL_sysmutex_c.h"
+#include <Windows.h>
+
+
+/* Create a mutex */
+extern "C"
+SDL_mutex *
+SDL_CreateMutex(void)
+{
+    /* Allocate and initialize the mutex */
+    try {
+        SDL_mutex * mutex = new SDL_mutex;
+        return mutex;
+    } catch (std::exception & ex) {
+        SDL_SetError("unable to create C++ mutex: %s", ex.what());
+        return NULL;
+    } catch (...) {
+        SDL_SetError("unable to create C++ mutex due to an unknown exception");
+        return NULL;
+    }
+}
+
+/* Free the mutex */
+extern "C"
+void
+SDL_DestroyMutex(SDL_mutex * mutex)
+{
+    if (mutex) {
+        try {
+            delete mutex;
+        } catch (...) {
+            // catch any and all exceptions, just in case something happens
+        }
+    }
+}
+
+/* Lock the semaphore */
+extern "C"
+int
+SDL_mutexP(SDL_mutex * mutex)
+{
+    SDL_threadID threadID = SDL_ThreadID();
+    DWORD realThreadID = GetCurrentThreadId();
+    if (mutex == NULL) {
+        SDL_SetError("Passed a NULL mutex");
+        return -1;
+    }
+
+    try {
+        mutex->cpp_mutex.lock();
+        return 0;
+    } catch (std::exception & ex) {
+        SDL_SetError("unable to lock C++ mutex: %s", ex.what());
+        return -1;
+    } catch (...) {
+        SDL_SetError("unable to lock C++ mutex due to an unknown exception");
+        return -1;
+    }
+}
+
+/* Unlock the mutex */
+extern "C"
+int
+SDL_mutexV(SDL_mutex * mutex)
+{
+    SDL_threadID threadID = SDL_ThreadID();
+    DWORD realThreadID = GetCurrentThreadId();
+    if (mutex == NULL) {
+        SDL_SetError("Passed a NULL mutex");
+        return -1;
+    }
+
+    try {
+        mutex->cpp_mutex.unlock();
+        return 0;
+    } catch (...) {
+        // catch any and all exceptions, just in case something happens.
+        SDL_SetError("unable to unlock C++ mutex due to an unknown exception");
+        return -1;
+    }
+}
+
+/* vi: set ts=4 sw=4 expandtab: */