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Updated SDL2

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This commit is contained in:
Gerhard Stein
2020-09-28 16:41:30 +02:00
parent c6950836a0
commit 2ecfbd1189
1421 changed files with 369825 additions and 151297 deletions
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175
project/jni/sdl-2.0/include/SDL_thread.h
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2020 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
@@ -19,8 +19,8 @@
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef _SDL_thread_h
#define _SDL_thread_h
#ifndef SDL_thread_h_
#define SDL_thread_h_
/**
* \file SDL_thread.h
@@ -51,36 +51,39 @@ typedef unsigned long SDL_threadID;
/* Thread local storage ID, 0 is the invalid ID */
typedef unsigned int SDL_TLSID;
/* The SDL thread priority
/**
* The SDL thread priority.
*
* Note: On many systems you require special privileges to set high priority.
* \note On many systems you require special privileges to set high or time critical priority.
*/
typedef enum {
SDL_THREAD_PRIORITY_LOW,
SDL_THREAD_PRIORITY_NORMAL,
SDL_THREAD_PRIORITY_HIGH
SDL_THREAD_PRIORITY_HIGH,
SDL_THREAD_PRIORITY_TIME_CRITICAL
} SDL_ThreadPriority;
/* The function passed to SDL_CreateThread()
It is passed a void* user context parameter and returns an int.
/**
* The function passed to SDL_CreateThread().
* It is passed a void* user context parameter and returns an int.
*/
typedef int (SDLCALL * SDL_ThreadFunction) (void *data);
#if defined(__WIN32__) && !defined(HAVE_LIBC)
#if defined(__WIN32__)
/**
* \file SDL_thread.h
*
* We compile SDL into a DLL. This means, that it's the DLL which
* creates a new thread for the calling process with the SDL_CreateThread()
* API. There is a problem with this, that only the RTL of the SDL.DLL will
* API. There is a problem with this, that only the RTL of the SDL2.DLL will
* be initialized for those threads, and not the RTL of the calling
* application!
*
* To solve this, we make a little hack here.
*
* We'll always use the caller's _beginthread() and _endthread() APIs to
* start a new thread. This way, if it's the SDL.DLL which uses this API,
* then the RTL of SDL.DLL will be used to create the new thread, and if it's
* start a new thread. This way, if it's the SDL2.DLL which uses this API,
* then the RTL of SDL2.DLL will be used to create the new thread, and if it's
* the application, then the RTL of the application will be used.
*
* So, in short:
@@ -88,16 +91,20 @@ typedef int (SDLCALL * SDL_ThreadFunction) (void *data);
* library!
*/
#define SDL_PASSED_BEGINTHREAD_ENDTHREAD
#include <process.h> /* This has _beginthread() and _endthread() defined! */
#include <process.h> /* _beginthreadex() and _endthreadex() */
typedef uintptr_t(__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned,
unsigned (__stdcall *
func) (void
*),
void *arg, unsigned,
unsigned *threadID);
typedef uintptr_t (__cdecl * pfnSDL_CurrentBeginThread)
(void *, unsigned, unsigned (__stdcall *func)(void *),
void * /*arg*/, unsigned, unsigned * /* threadID */);
typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code);
#ifndef SDL_beginthread
#define SDL_beginthread _beginthreadex
#endif
#ifndef SDL_endthread
#define SDL_endthread _endthreadex
#endif
/**
* Create a thread.
*/
@@ -106,18 +113,84 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
pfnSDL_CurrentBeginThread pfnBeginThread,
pfnSDL_CurrentEndThread pfnEndThread);
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThreadWithStackSize(int (SDLCALL * fn) (void *),
const char *name, const size_t stacksize, void *data,
pfnSDL_CurrentBeginThread pfnBeginThread,
pfnSDL_CurrentEndThread pfnEndThread);
/**
* Create a thread.
*/
#define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
#if defined(SDL_CreateThread) && SDL_DYNAMIC_API
#undef SDL_CreateThread
#define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#undef SDL_CreateThreadWithStackSize
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#else
#define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)SDL_endthread)
#endif
#elif defined(__OS2__)
/*
* just like the windows case above: We compile SDL2
* into a dll with Watcom's runtime statically linked.
*/
#define SDL_PASSED_BEGINTHREAD_ENDTHREAD
#ifndef __EMX__
#include <process.h>
#else
#include <stdlib.h>
#endif
typedef int (*pfnSDL_CurrentBeginThread)(void (*func)(void *), void *, unsigned, void * /*arg*/);
typedef void (*pfnSDL_CurrentEndThread)(void);
#ifndef SDL_beginthread
#define SDL_beginthread _beginthread
#endif
#ifndef SDL_endthread
#define SDL_endthread _endthread
#endif
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
pfnSDL_CurrentBeginThread pfnBeginThread,
pfnSDL_CurrentEndThread pfnEndThread);
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,
pfnSDL_CurrentBeginThread pfnBeginThread,
pfnSDL_CurrentEndThread pfnEndThread);
#if defined(SDL_CreateThread) && SDL_DYNAMIC_API
#undef SDL_CreateThread
#define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#undef SDL_CreateThreadWithStackSize
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#else
#define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)SDL_beginthread, (pfnSDL_CurrentEndThread)SDL_endthread)
#endif
#else
/**
* Create a thread with a default stack size.
*
* This is equivalent to calling:
* SDL_CreateThreadWithStackSize(fn, name, 0, data);
*/
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
/**
* Create a thread.
*
* Thread naming is a little complicated: Most systems have very small
* limits for the string length (BeOS has 32 bytes, Linux currently has 16,
* limits for the string length (Haiku has 32 bytes, Linux currently has 16,
* Visual C++ 6.0 has nine!), and possibly other arbitrary rules. You'll
* have to see what happens with your system's debugger. The name should be
* UTF-8 (but using the naming limits of C identifiers is a better bet).
@@ -130,9 +203,17 @@ SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
* If a system imposes requirements, SDL will try to munge the string for
* it (truncate, etc), but the original string contents will be available
* from SDL_GetThreadName().
*
* The size (in bytes) of the new stack can be specified. Zero means "use
* the system default" which might be wildly different between platforms
* (x86 Linux generally defaults to eight megabytes, an embedded device
* might be a few kilobytes instead).
*
* In SDL 2.1, stacksize will be folded into the original SDL_CreateThread
* function.
*/
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);
#endif
@@ -163,13 +244,53 @@ extern DECLSPEC SDL_threadID SDLCALL SDL_GetThreadID(SDL_Thread * thread);
extern DECLSPEC int SDLCALL SDL_SetThreadPriority(SDL_ThreadPriority priority);
/**
* Wait for a thread to finish.
* Wait for a thread to finish. Threads that haven't been detached will
* remain (as a "zombie") until this function cleans them up. Not doing so
* is a resource leak.
*
* Once a thread has been cleaned up through this function, the SDL_Thread
* that references it becomes invalid and should not be referenced again.
* As such, only one thread may call SDL_WaitThread() on another.
*
* The return code for the thread function is placed in the area
* pointed to by \c status, if \c status is not NULL.
*
* You may not wait on a thread that has been used in a call to
* SDL_DetachThread(). Use either that function or this one, but not
* both, or behavior is undefined.
*
* It is safe to pass NULL to this function; it is a no-op.
*/
extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread * thread, int *status);
/**
* A thread may be "detached" to signify that it should not remain until
* another thread has called SDL_WaitThread() on it. Detaching a thread
* is useful for long-running threads that nothing needs to synchronize
* with or further manage. When a detached thread is done, it simply
* goes away.
*
* There is no way to recover the return code of a detached thread. If you
* need this, don't detach the thread and instead use SDL_WaitThread().
*
* Once a thread is detached, you should usually assume the SDL_Thread isn't
* safe to reference again, as it will become invalid immediately upon
* the detached thread's exit, instead of remaining until someone has called
* SDL_WaitThread() to finally clean it up. As such, don't detach the same
* thread more than once.
*
* If a thread has already exited when passed to SDL_DetachThread(), it will
* stop waiting for a call to SDL_WaitThread() and clean up immediately.
* It is not safe to detach a thread that might be used with SDL_WaitThread().
*
* You may not call SDL_WaitThread() on a thread that has been detached.
* Use either that function or this one, but not both, or behavior is
* undefined.
*
* It is safe to pass NULL to this function; it is a no-op.
*/
extern DECLSPEC void SDLCALL SDL_DetachThread(SDL_Thread * thread);
/**
* \brief Create an identifier that is globally visible to all threads but refers to data that is thread-specific.
*
@@ -186,9 +307,9 @@ extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread * thread, int *status);
* if (!thread_local_storage) {
* thread_local_storage = SDL_TLSCreate();
* }
* SDL_AtomicUnLock(&tls_lock);
* SDL_AtomicUnlock(&tls_lock);
* }
* SDL_TLSSet(thread_local_storage, value);
* SDL_TLSSet(thread_local_storage, value, 0);
* }
*
* void *GetMyThreadData(void)
@@ -226,7 +347,7 @@ extern DECLSPEC void * SDLCALL SDL_TLSGet(SDL_TLSID id);
* \sa SDL_TLSCreate()
* \sa SDL_TLSGet()
*/
extern DECLSPEC int SDLCALL SDL_TLSSet(SDL_TLSID id, const void *value, void (*destructor)(void*));
extern DECLSPEC int SDLCALL SDL_TLSSet(SDL_TLSID id, const void *value, void (SDLCALL *destructor)(void*));
/* Ends C function definitions when using C++ */
@@ -235,6 +356,6 @@ extern DECLSPEC int SDLCALL SDL_TLSSet(SDL_TLSID id, const void *value, void (*d
#endif
#include "close_code.h"
#endif /* _SDL_thread_h */
#endif /* SDL_thread_h_ */
/* vi: set ts=4 sw=4 expandtab: */