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46bb47cf04
This avoids the need to malloc something extra, use a semaphore, etc, and fixes Emscripten with pthreads support, which might not spin up a web worker until after SDL_CreateThread returns and thus can't wait on a semaphore at this point in any case. Fixes Bugzilla #5064.
99 lines
3 KiB
C
99 lines
3 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 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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#ifndef SDL_thread_c_h_
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#define SDL_thread_c_h_
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#include "SDL_thread.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_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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#elif SDL_THREAD_STDCPP
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#include "stdcpp/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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typedef enum SDL_ThreadState
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{
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SDL_THREAD_STATE_ALIVE,
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SDL_THREAD_STATE_DETACHED,
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SDL_THREAD_STATE_ZOMBIE,
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SDL_THREAD_STATE_CLEANED,
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} SDL_ThreadState;
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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_atomic_t state; /* SDL_THREAD_STATE_* */
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SDL_error errbuf;
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char *name;
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size_t stacksize; /* 0 for default, >0 for user-specified stack size. */
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int (SDLCALL * userfunc) (void *);
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void *userdata;
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void *data;
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void *endfunc; /* only used on some platforms. */
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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(SDL_Thread *thread);
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/* This is the system-independent thread local storage structure */
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typedef struct {
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unsigned int limit;
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struct {
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void *data;
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void (SDLCALL *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(void);
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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: */
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