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Stack hint should look for 0, not -1, and not care about environment variables.

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This commit is contained in:
Ryan C. Gordon 2015-05-26 21:19:23 -04:00
parent a8fa7bd1f7
commit baea64e642
4 changed files with 5 additions and 13 deletions
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3
include/SDL_hints.h
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@ -350,13 +350,12 @@ extern "C" {
/**
* \brief A string specifying SDL's threads stack size in bytes or "-1" for the backend's default size
* \brief A string specifying SDL's threads stack size in bytes or "0" for the backend's default size
*
* Use this hint in case you need to set SDL's threads stack size to other than the default.
* This is specially useful if you build SDL against a non glibc libc library (such as musl) which
* provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses).
* Support for this hint is currenly available only in the pthread backend.
* As a precaution, this hint can not be set via an environment variable.
*/
#define SDL_HINT_THREAD_STACK_SIZE "SDL_THREAD_STACK_SIZE"

8
src/SDL.c
View file

@ -107,7 +107,6 @@ SDL_SetMainReady(void)
int
SDL_InitSubSystem(Uint32 flags)
{
static Uint32 hints_initialized = SDL_FALSE;
if (!SDL_MainIsReady) {
SDL_SetError("Application didn't initialize properly, did you include SDL_main.h in the file containing your main() function?");
return -1;
@ -115,13 +114,6 @@ SDL_InitSubSystem(Uint32 flags)
/* Clear the error message */
SDL_ClearError();
if (hints_initialized == SDL_FALSE) {
/* Set a default of -1 for SDL_HINT_THREAD_STACK_SIZE to prevent the
end user from interfering it's value with environment variables */
SDL_SetHintWithPriority(SDL_HINT_THREAD_STACK_SIZE, "-1", SDL_HINT_OVERRIDE);
hints_initialized = SDL_TRUE;
}
#if SDL_VIDEO_DRIVER_WINDOWS
if ((flags & (SDL_INIT_HAPTIC|SDL_INIT_JOYSTICK))) {

5
src/thread/pthread/SDL_systhread.c
View file

@ -111,7 +111,10 @@ SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
/* If the SDL_HINT_THREAD_STACK_SIZE exists and it seems to be a positive number, use it */
if (hint && hint[0] >= '0' && hint[0] <= '9') {
pthread_attr_setstacksize(&type, (size_t)SDL_atoi(hint));
const size_t stacksize = (size_t) SDL_atoi(hint);
if (stacksize > 0) {
pthread_attr_setstacksize(&type, );
}
}
pthread_attr_getstacksize(&type, &ss);

2
test/torturethread.c
View file

@ -87,8 +87,6 @@ main(int argc, char *argv[])
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
SDL_SetHintWithPriority(SDL_HINT_THREAD_STACK_SIZE, SDL_getenv(SDL_HINT_THREAD_STACK_SIZE), SDL_HINT_OVERRIDE);
signal(SIGSEGV, SIG_DFL);
for (i = 0; i < NUMTHREADS; i++) {