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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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6
src/thread/stdcpp/SDL_systhread.cpp
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@ -40,16 +40,16 @@ extern "C" {
static void
RunThread(void *args)
{
SDL_RunThread(args);
SDL_RunThread((SDL_Thread *) args);
}
extern "C"
int
SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
SDL_SYS_CreateThread(SDL_Thread * thread)
{
try {
// !!! FIXME: no way to set a thread stack size here.
std::thread cpp_thread(RunThread, args);
std::thread cpp_thread(RunThread, thread);
thread->handle = (void *) new std::thread(std::move(cpp_thread));
return 0;
} catch (std::system_error & ex) {