src/thread/SDL_thread_c.h
author Sam Lantinga <slouken@libsdl.org>
Wed, 10 Jul 2013 18:31:17 -0700
changeset 7393 358696c354a8
parent 7011 82bbfbbc720e
child 7482 249d8ecbbb7d
permissions -rw-r--r--
Added release/acquire memory barriers to the atomic API
* Added a destructor to clean up TLS memory at thread shutdown
* Refactored the TLS code to have platform independent code and a small platform dependent core with a fallback to generic code if platform dependent functions fail.
* Fixed recursion issues with SDL_GetErrBuf()
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2013 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_config.h"
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#ifndef _SDL_thread_c_h
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#define _SDL_thread_c_h
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/* Need the definitions of SYS_ThreadHandle */
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#if SDL_THREADS_DISABLED
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#include "generic/SDL_systhread_c.h"
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#elif SDL_THREAD_BEOS
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#include "beos/SDL_systhread_c.h"
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#elif SDL_THREAD_EPOC
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#include "epoc/SDL_systhread_c.h"
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#elif SDL_THREAD_PTHREAD
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#include "pthread/SDL_systhread_c.h"
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#elif SDL_THREAD_WINDOWS
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#include "windows/SDL_systhread_c.h"
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#elif SDL_THREAD_PSP
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#include "psp/SDL_systhread_c.h"
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#else
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#error Need thread implementation for this platform
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#include "generic/SDL_systhread_c.h"
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#endif
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#include "../SDL_error_c.h"
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/* This is the system-independent thread info structure */
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struct SDL_Thread
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{
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    SDL_threadID threadid;
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    SYS_ThreadHandle handle;
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    int status;
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    SDL_error errbuf;
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    char *name;
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    void *data;
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};
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/* This is the function called to run a thread */
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extern void SDL_RunThread(void *data);
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/* This is the system-independent thread local storage structure */
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typedef struct {
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    int limit;
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    struct {
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        void *data;
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        void (*destructor)(void*);
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    } array[1];
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} SDL_TLSData;
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/* This is how many TLS entries we allocate at once */
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#define TLS_ALLOC_CHUNKSIZE 4
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/* Get cross-platform, slow, thread local storage for this thread.
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   This is only intended as a fallback if getting real thread-local
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   storage fails or isn't supported on this platform.
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 */
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extern SDL_TLSData *SDL_Generic_GetTLSData();
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/* Set cross-platform, slow, thread local storage for this thread.
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   This is only intended as a fallback if getting real thread-local
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   storage fails or isn't supported on this platform.
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 */
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extern int SDL_Generic_SetTLSData(SDL_TLSData *data);
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#endif /* _SDL_thread_c_h */
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/* vi: set ts=4 sw=4 expandtab: */