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SDL/src/thread/SDL_thread_c.h

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Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/*
Simple DirectMedia Layer
Updated copyright date for 2020
2020-01-17 04:49:25 +00:00
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../SDL_internal.h"
Renaming of guard header names to quiet -Wreserved-id-macro Patch contributed by Sylvain
2016-11-21 05:34:54 +00:00
#ifndef SDL_thread_c_h_
#define SDL_thread_c_h_
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#include "SDL_thread.h"
/* Need the definitions of SYS_ThreadHandle */
#if SDL_THREADS_DISABLED
#include "generic/SDL_systhread_c.h"
#elif SDL_THREAD_PTHREAD
#include "pthread/SDL_systhread_c.h"
#elif SDL_THREAD_WINDOWS
#include "windows/SDL_systhread_c.h"
#elif SDL_THREAD_PSP
#include "psp/SDL_systhread_c.h"
#elif SDL_THREAD_STDCPP
#include "stdcpp/SDL_systhread_c.h"
#else
#error Need thread implementation for this platform
#include "generic/SDL_systhread_c.h"
#endif
#include "../SDL_error_c.h"
typedef enum SDL_ThreadState
{
SDL_THREAD_STATE_ALIVE,
SDL_THREAD_STATE_DETACHED,
SDL_THREAD_STATE_ZOMBIE,
SDL_THREAD_STATE_CLEANED,
} SDL_ThreadState;
/* This is the system-independent thread info structure */
struct SDL_Thread
{
SDL_threadID threadid;
SYS_ThreadHandle handle;
int status;
SDL_atomic_t state; /* SDL_THREAD_STATE_* */
SDL_error errbuf;
char *name;
threads: Handle SDL_HINT_THREAD_STACK_SIZE at top level, implement elsewhere.
2016-04-12 18:38:50 +00:00
size_t stacksize; /* 0 for default, >0 for user-specified stack size. */
thread: Put all important SDL_CreateThread internal data into SDL_Thread. 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.
2020-03-27 02:14:59 +00:00
int (SDLCALL * userfunc) (void *);
void *userdata;
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
void *data;
thread: Put all important SDL_CreateThread internal data into SDL_Thread. 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.
2020-03-27 02:14:59 +00:00
void *endfunc; /* only used on some platforms. */
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
};
/* This is the function called to run a thread */
thread: Put all important SDL_CreateThread internal data into SDL_Thread. 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.
2020-03-27 02:14:59 +00:00
extern void SDL_RunThread(SDL_Thread *thread);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/* This is the system-independent thread local storage structure */
typedef struct {
unsigned int limit;
struct {
void *data;
Fixed bug 3745 - specify SDLCALL as the calling convention for API callbacks Patches contributed by Ozkan Sezer
2017-08-14 13:28:21 +00:00
void (SDLCALL *destructor)(void*);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
} array[1];
} SDL_TLSData;
/* This is how many TLS entries we allocate at once */
#define TLS_ALLOC_CHUNKSIZE 4
/* Get cross-platform, slow, thread local storage for this thread.
This is only intended as a fallback if getting real thread-local
storage fails or isn't supported on this platform.
*/
Patch from Sylvain to fix clang warnings
2016-11-14 06:57:41 +00:00
extern SDL_TLSData *SDL_Generic_GetTLSData(void);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/* Set cross-platform, slow, thread local storage for this thread.
This is only intended as a fallback if getting real thread-local
storage fails or isn't supported on this platform.
*/
extern int SDL_Generic_SetTLSData(SDL_TLSData *data);
Renaming of guard header names to quiet -Wreserved-id-macro Patch contributed by Sylvain
2016-11-21 05:34:54 +00:00
#endif /* SDL_thread_c_h_ */
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/* vi: set ts=4 sw=4 expandtab: */
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