1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20 */ 21 #include "../SDL_internal.h" 22 23 #ifndef SDL_thread_c_h_ 24 #define SDL_thread_c_h_ 25 26 #include "SDL_thread.h" 27 28 /* Need the definitions of SYS_ThreadHandle */ 29 #if SDL_THREADS_DISABLED 30 #include "generic/SDL_systhread_c.h" 31 #elif SDL_THREAD_PTHREAD 32 #include "pthread/SDL_systhread_c.h" 33 #elif SDL_THREAD_WINDOWS 34 #include "windows/SDL_systhread_c.h" 35 #elif SDL_THREAD_PSP 36 #include "psp/SDL_systhread_c.h" 37 #elif SDL_THREAD_STDCPP 38 #include "stdcpp/SDL_systhread_c.h" 39 #else 40 #error Need thread implementation for this platform 41 #include "generic/SDL_systhread_c.h" 42 #endif 43 #include "../SDL_error_c.h" 44 45 typedef enum SDL_ThreadState 46 { 47 SDL_THREAD_STATE_ALIVE, 48 SDL_THREAD_STATE_DETACHED, 49 SDL_THREAD_STATE_ZOMBIE, 50 SDL_THREAD_STATE_CLEANED, 51 } SDL_ThreadState; 52 53 /* This is the system-independent thread info structure */ 54 struct SDL_Thread 55 { 56 SDL_threadID threadid; 57 SYS_ThreadHandle handle; 58 int status; 59 SDL_atomic_t state; /* SDL_THREAD_STATE_* */ 60 SDL_error errbuf; 61 char *name; 62 size_t stacksize; /* 0 for default, >0 for user-specified stack size. */ 63 int (SDLCALL * userfunc) (void *); 64 void *userdata; 65 void *data; 66 void *endfunc; /* only used on some platforms. */ 67 }; 68 69 /* This is the function called to run a thread */ 70 extern void SDL_RunThread(SDL_Thread *thread); 71 72 /* This is the system-independent thread local storage structure */ 73 typedef struct { 74 unsigned int limit; 75 struct { 76 void *data; 77 void (SDLCALL *destructor)(void*); 78 } array[1]; 79 } SDL_TLSData; 80 81 /* This is how many TLS entries we allocate at once */ 82 #define TLS_ALLOC_CHUNKSIZE 4 83 84 /* Get cross-platform, slow, thread local storage for this thread. 85 This is only intended as a fallback if getting real thread-local 86 storage fails or isn't supported on this platform. 87 */ 88 extern SDL_TLSData *SDL_Generic_GetTLSData(void); 89 90 /* Set cross-platform, slow, thread local storage for this thread. 91 This is only intended as a fallback if getting real thread-local 92 storage fails or isn't supported on this platform. 93 */ 94 extern int SDL_Generic_SetTLSData(SDL_TLSData *data); 95 96 #endif /* SDL_thread_c_h_ */ 97 98 /* vi: set ts=4 sw=4 expandtab: */ 99