mirror of
https://github.com/libsdl-org/SDL.git
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fb0ce375f0
* Add braces after if conditions
* More add braces after if conditions
* Add braces after while() conditions
* Fix compilation because of macro being modified
* Add braces to for loop
* Add braces after if/goto
* Move comments up
* Remove extra () in the 'return ...;' statements
* More remove extra () in the 'return ...;' statements
* More remove extra () in the 'return ...;' statements after merge
* Fix inconsistent patterns are xxx == NULL vs !xxx
* More "{}" for "if() break;" and "if() continue;"
* More "{}" after if() short statement
* More "{}" after "if () return;" statement
* More fix inconsistent patterns are xxx == NULL vs !xxx
* Revert some modificaion on SDL_RLEaccel.c
* SDL_RLEaccel: no short statement
* Cleanup 'if' where the bracket is in a new line
* Cleanup 'while' where the bracket is in a new line
* Cleanup 'for' where the bracket is in a new line
* Cleanup 'else' where the bracket is in a new line
(cherry picked from commit 6a2200823c to reduce conflicts merging between SDL2 and SDL3)
118 lines
2.6 KiB
C++
118 lines
2.6 KiB
C++
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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/* An implementation of mutexes using the Symbian API. */
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#include <e32std.h>
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#include "SDL_thread.h"
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#include "SDL_systhread_c.h"
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struct SDL_mutex
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{
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TInt handle;
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};
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extern TInt CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny*, TAny*);
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static TInt NewMutex(const TDesC& aName, TAny* aPtr1, TAny*)
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{
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return ((RMutex *)aPtr1)->CreateGlobal(aName);
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}
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/* Create a mutex */
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SDL_mutex *
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SDL_CreateMutex(void)
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{
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RMutex rmutex;
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TInt status = CreateUnique(NewMutex, &rmutex, NULL);
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if (status != KErrNone) {
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SDL_SetError("Couldn't create mutex.");
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}
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SDL_mutex* mutex = new /*(ELeave)*/ SDL_mutex;
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mutex->handle = rmutex.Handle();
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return mutex;
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}
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/* Free the mutex */
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void
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SDL_DestroyMutex(SDL_mutex * mutex)
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{
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if (mutex) {
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RMutex rmutex;
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rmutex.SetHandle(mutex->handle);
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rmutex.Signal();
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rmutex.Close();
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delete(mutex);
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mutex = NULL;
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}
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}
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/* Try to lock the mutex */
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#if 0
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int
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SDL_TryLockMutex(SDL_mutex * mutex)
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{
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if (mutex == NULL)
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{
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SDL_SetError("Passed a NULL mutex.");
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return -1;
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}
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// Not yet implemented.
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return 0;
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}
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#endif
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/* Lock the mutex */
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int
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SDL_LockMutex(SDL_mutex * mutex)
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{
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if (mutex == NULL) {
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return SDL_InvalidParamError("mutex");
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}
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RMutex rmutex;
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rmutex.SetHandle(mutex->handle);
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rmutex.Wait();
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return 0;
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}
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/* Unlock the mutex */
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int
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SDL_UnlockMutex(SDL_mutex * mutex)
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{
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if (mutex == NULL) {
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return SDL_InvalidParamError("mutex");
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}
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RMutex rmutex;
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rmutex.SetHandle(mutex->handle);
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rmutex.Signal();
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return 0;
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}
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/* vi: set ts=4 sw=4 expandtab: */
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