src/thread/stdcpp/SDL_sysmutex.cpp
author David Ludwig
Mon, 10 Mar 2014 21:21:35 -0400
changeset 8600 092802455aed
parent 8488 bb48911cd9c8
child 8611 a762dfc67e1a
permissions -rw-r--r--
build fixes for most WinRT-related files

Still TODO: getting the D3D11 renderer back up and running in VC 2012.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 extern "C" {
    24 #include "SDL_thread.h"
    25 #include "SDL_systhread_c.h"
    26 #include "SDL_log.h"
    27 }
    28 
    29 #include <system_error>
    30 
    31 #include "SDL_sysmutex_c.h"
    32 #include <Windows.h>
    33 
    34 
    35 /* Create a mutex */
    36 extern "C"
    37 SDL_mutex *
    38 SDL_CreateMutex(void)
    39 {
    40     /* Allocate and initialize the mutex */
    41     try {
    42         SDL_mutex * mutex = new SDL_mutex;
    43         return mutex;
    44     } catch (std::system_error & ex) {
    45         SDL_SetError("unable to create a C++ mutex: code=%d; %s", ex.code(), ex.what());
    46         return NULL;
    47     } catch (std::bad_alloc &) {
    48         SDL_OutOfMemory();
    49         return NULL;
    50     }
    51 }
    52 
    53 /* Free the mutex */
    54 extern "C"
    55 void
    56 SDL_DestroyMutex(SDL_mutex * mutex)
    57 {
    58     if (mutex) {
    59         delete mutex;
    60     }
    61 }
    62 
    63 /* Lock the semaphore */
    64 extern "C"
    65 int
    66 SDL_mutexP(SDL_mutex * mutex)
    67 {
    68     if (mutex == NULL) {
    69         SDL_SetError("Passed a NULL mutex");
    70         return -1;
    71     }
    72 
    73     try {
    74         mutex->cpp_mutex.lock();
    75         return 0;
    76     } catch (std::system_error & ex) {
    77         SDL_SetError("unable to lock a C++ mutex: code=%d; %s", ex.code(), ex.what());
    78         return -1;
    79     }
    80 }
    81 
    82 /* Unlock the mutex */
    83 extern "C"
    84 int
    85 SDL_mutexV(SDL_mutex * mutex)
    86 {
    87     if (mutex == NULL) {
    88         SDL_SetError("Passed a NULL mutex");
    89         return -1;
    90     }
    91 
    92     mutex->cpp_mutex.unlock();
    93     return 0;
    94 }
    95 
    96 /* vi: set ts=4 sw=4 expandtab: */