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thread: Put all important SDL_CreateThread internal data into SDL_Thread.

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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.
This commit is contained in:
Ryan C. Gordon 2020-03-26 22:14:59 -04:00
parent abdc5cbf24
commit 46bb47cf04
8 changed files with 44 additions and 97 deletions
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5
src/thread/SDL_thread_c.h
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@ -60,11 +60,14 @@ struct SDL_Thread
SDL_error errbuf;
char *name;
size_t stacksize; /* 0 for default, >0 for user-specified stack size. */
int (SDLCALL * userfunc) (void *);
void *userdata;
void *data;
void *endfunc; /* only used on some platforms. */
};
/* This is the function called to run a thread */
extern void SDL_RunThread(void *data);
extern void SDL_RunThread(SDL_Thread *thread);
/* This is the system-independent thread local storage structure */
typedef struct {