--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/libsdl-trunk/include/SDL_mutex.h Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,162 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2006 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
+
+/* Functions to provide thread synchronization primitives
+
+ 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)
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/* 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);
+
+/* Lock the mutex (Returns 0, or -1 on error) */
+#define SDL_LockMutex(m) SDL_mutexP(m)
+extern DECLSPEC int SDLCALL SDL_mutexP(SDL_mutex *mutex);
+
+/* Unlock the mutex (Returns 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.
+ */
+#define SDL_UnlockMutex(m) SDL_mutexV(m)
+extern DECLSPEC int SDLCALL SDL_mutexV(SDL_mutex *mutex);
+
+/* Destroy a mutex */
+extern DECLSPEC void SDLCALL SDL_DestroyMutex(SDL_mutex *mutex);
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/* 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(), returns 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), returns 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);
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/* 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,
+ returns 0 or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_CondSignal(SDL_cond *cond);
+
+/* Restart all threads that are waiting on the condition variable,
+ returns 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.
+ Returns 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 */