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Added a hint to specify new thread stack size (thanks, Gabriel!).

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Fixes Bugzilla #2019.

(we'll do a better fix when we break the API in SDL 2.1.)
This commit is contained in:
Ryan C. Gordon
2015-05-26 21:13:27 -04:00
parent bcdc63a38b
commit a8fa7bd1f7
4 changed files with 32 additions and 0 deletions
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8
src/SDL.c
View File

@@ -107,6 +107,7 @@ 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;
@@ -114,6 +115,13 @@ 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))) {

10
src/thread/pthread/SDL_systhread.c
View File

@@ -45,6 +45,7 @@
#include "SDL_platform.h"
#include "SDL_thread.h"
#include "SDL_hints.h"
#include "../SDL_thread_c.h"
#include "../SDL_systhread.h"
#ifdef __ANDROID__
@@ -86,6 +87,8 @@ int
SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
{
pthread_attr_t type;
size_t ss;
const char *hint = SDL_GetHint(SDL_HINT_THREAD_STACK_SIZE);
/* do this here before any threads exist, so there's no race condition. */
#if defined(__MACOSX__) || defined(__IPHONEOS__) || defined(__LINUX__)
@@ -105,6 +108,13 @@ SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
return SDL_SetError("Couldn't initialize pthread attributes");
}
pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
/* 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));
}
pthread_attr_getstacksize(&type, &ss);
/* Create the thread and go! */
if (pthread_create(&thread->handle, &type, RunThread, args) != 0) {