1 files changed, 177 insertions, 0 deletions
diff --git a/src/SDL12/include/SDL_mutex.h b/src/SDL12/include/SDL_mutex.h
new file mode 100644
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+++ b/src/SDL12/include/SDL_mutex.h
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+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2009 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+
+#ifndef _SDL_mutex_h
+#define _SDL_mutex_h
+
+/** @file SDL_mutex.h
+ *  Functions to provide thread synchronization primitives
+ *
+ *  @note These are independent of the other SDL routines.
+ */
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Synchronization functions which can time out return this value
+ *  if they time out.
+ */
+#define SDL_MUTEX_TIMEDOUT	1
+
+/** This is the timeout value which corresponds to never time out */
+#define SDL_MUTEX_MAXWAIT	(~(Uint32)0)
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/** @name Mutex functions                                        */ /*@{*/
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/** The SDL mutex structure, defined in SDL_mutex.c */
+struct SDL_mutex;
+typedef struct SDL_mutex SDL_mutex;
+
+/** Create a mutex, initialized unlocked */
+extern DECLSPEC SDL_mutex * SDLCALL SDL_CreateMutex(void);
+
+#define SDL_LockMutex(m)	SDL_mutexP(m)
+/** Lock the mutex
+ *  @return 0, or -1 on error
+ */
+extern DECLSPEC int SDLCALL SDL_mutexP(SDL_mutex *mutex);
+
+#define SDL_UnlockMutex(m)	SDL_mutexV(m)
+/** Unlock the mutex
+ *  @return 0, or -1 on error
+ *
+ *  It is an error to unlock a mutex that has not been locked by
+ *  the current thread, and doing so results in undefined behavior.
+ */
+extern DECLSPEC int SDLCALL SDL_mutexV(SDL_mutex *mutex);
+
+/** Destroy a mutex */
+extern DECLSPEC void SDLCALL SDL_DestroyMutex(SDL_mutex *mutex);
+
+/*@}*/
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/** @name Semaphore functions                                    */ /*@{*/
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/** The SDL semaphore structure, defined in SDL_sem.c */
+struct SDL_semaphore;
+typedef struct SDL_semaphore SDL_sem;
+
+/** Create a semaphore, initialized with value, returns NULL on failure. */
+extern DECLSPEC SDL_sem * SDLCALL SDL_CreateSemaphore(Uint32 initial_value);
+
+/** Destroy a semaphore */
+extern DECLSPEC void SDLCALL SDL_DestroySemaphore(SDL_sem *sem);
+
+/**
+ * This function suspends the calling thread until the semaphore pointed 
+ * to by sem has a positive count. It then atomically decreases the semaphore
+ * count.
+ */
+extern DECLSPEC int SDLCALL SDL_SemWait(SDL_sem *sem);
+
+/** Non-blocking variant of SDL_SemWait().
+ *  @return 0 if the wait succeeds,
+ *  SDL_MUTEX_TIMEDOUT if the wait would block, and -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_SemTryWait(SDL_sem *sem);
+
+/** Variant of SDL_SemWait() with a timeout in milliseconds, returns 0 if
+ *  the wait succeeds, SDL_MUTEX_TIMEDOUT if the wait does not succeed in
+ *  the allotted time, and -1 on error.
+ *
+ *  On some platforms this function is implemented by looping with a delay
+ *  of 1 ms, and so should be avoided if possible.
+ */
+extern DECLSPEC int SDLCALL SDL_SemWaitTimeout(SDL_sem *sem, Uint32 ms);
+
+/** Atomically increases the semaphore's count (not blocking).
+ *  @return 0, or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_SemPost(SDL_sem *sem);
+
+/** Returns the current count of the semaphore */
+extern DECLSPEC Uint32 SDLCALL SDL_SemValue(SDL_sem *sem);
+
+/*@}*/
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/** @name Condition_variable_functions                           */ /*@{*/
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*@{*/
+/** The SDL condition variable structure, defined in SDL_cond.c */
+struct SDL_cond;
+typedef struct SDL_cond SDL_cond;
+/*@}*/
+
+/** Create a condition variable */
+extern DECLSPEC SDL_cond * SDLCALL SDL_CreateCond(void);
+
+/** Destroy a condition variable */
+extern DECLSPEC void SDLCALL SDL_DestroyCond(SDL_cond *cond);
+
+/** Restart one of the threads that are waiting on the condition variable,
+ *  @return 0 or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_CondSignal(SDL_cond *cond);
+
+/** Restart all threads that are waiting on the condition variable,
+ *  @return 0 or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_CondBroadcast(SDL_cond *cond);
+
+/** Wait on the condition variable, unlocking the provided mutex.
+ *  The mutex must be locked before entering this function!
+ *  The mutex is re-locked once the condition variable is signaled.
+ *  @return 0 when it is signaled, or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_CondWait(SDL_cond *cond, SDL_mutex *mut);
+
+/** Waits for at most 'ms' milliseconds, and returns 0 if the condition
+ *  variable is signaled, SDL_MUTEX_TIMEDOUT if the condition is not
+ *  signaled in the allotted time, and -1 on error.
+ *  On some platforms this function is implemented by looping with a delay
+ *  of 1 ms, and so should be avoided if possible.
+ */
+extern DECLSPEC int SDLCALL SDL_CondWaitTimeout(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms);
+
+/*@}*/
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_mutex_h */
+