| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2001-2008 Marc Alexander Lehmann <schmorp@schmorp.de> |
2 | * Copyright (c) 2001-2009 Marc Alexander Lehmann <schmorp@schmorp.de> |
| 3 | * |
3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without modifica- |
4 | * Redistribution and use in source and binary forms, with or without modifica- |
| 5 | * tion, are permitted provided that the following conditions are met: |
5 | * tion, are permitted provided that the following conditions are met: |
| 6 | * |
6 | * |
| 7 | * 1. Redistributions of source code must retain the above copyright notice, |
7 | * 1. Redistributions of source code must retain the above copyright notice, |
| … | |
… | |
| 65 | * do not rely on makecontext passing a void * correctly. |
65 | * do not rely on makecontext passing a void * correctly. |
| 66 | * try harder to get _setjmp/_longjmp. |
66 | * try harder to get _setjmp/_longjmp. |
| 67 | * major code cleanup/restructuring. |
67 | * major code cleanup/restructuring. |
| 68 | * 2008-11-10 the .cfi hacks are no longer needed. |
68 | * 2008-11-10 the .cfi hacks are no longer needed. |
| 69 | * 2008-11-16 work around a freebsd pthread bug. |
69 | * 2008-11-16 work around a freebsd pthread bug. |
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70 | * 2008-11-19 define coro_*jmp symbols for easier porting. |
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71 | * 2009-06-23 tentative win32-backend support for mingw32 (Yasuhiro Matsumoto). |
| 70 | */ |
72 | */ |
| 71 | |
73 | |
| 72 | #ifndef CORO_H |
74 | #ifndef CORO_H |
| 73 | #define CORO_H |
75 | #define CORO_H |
| 74 | |
76 | |
| … | |
… | |
| 239 | # define _XOPEN_UNIX 1 |
241 | # define _XOPEN_UNIX 1 |
| 240 | # endif |
242 | # endif |
| 241 | |
243 | |
| 242 | # include <setjmp.h> |
244 | # include <setjmp.h> |
| 243 | |
245 | |
| 244 | struct coro_context { |
246 | # if _XOPEN_UNIX > 0 || defined (_setjmp) |
| 245 | #if _XOPEN_UNIX > 0 || CORO_LOSER |
247 | # define coro_jmp_buf jmp_buf |
| 246 | jmp_buf env; |
248 | # define coro_setjmp(env) _setjmp (env) |
| 247 | #else |
249 | # define coro_longjmp(env) _longjmp ((env), 1) |
| 248 | sigjmp_buf env; |
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| 249 | #endif |
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| 250 | }; |
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| 251 | |
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| 252 | # if _XOPEN_UNIX > 0 |
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| 253 | # define coro_transfer(p,n) do { if (! _setjmp ((p)->env )) _longjmp ((n)->env, 1); } while (0) |
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| 254 | # elif CORO_LOSER |
250 | # elif CORO_LOSER |
| 255 | # define coro_transfer(p,n) do { if (! setjmp ((p)->env )) longjmp ((n)->env, 1); } while (0) |
251 | # define coro_jmp_buf jmp_buf |
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252 | # define coro_setjmp(env) setjmp (env) |
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253 | # define coro_longjmp(env) longjmp ((env), 1) |
| 256 | # else |
254 | # else |
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255 | # define coro_jmp_buf sigjmp_buf |
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256 | # define coro_setjmp(env) sigsetjmp (env, 0) |
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257 | # define coro_longjmp(env) siglongjmp ((env), 1) |
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258 | # endif |
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259 | |
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260 | struct coro_context { |
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261 | coro_jmp_buf env; |
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262 | }; |
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263 | |
| 257 | # define coro_transfer(p,n) do { if (!sigsetjmp ((p)->env, 0)) siglongjmp ((n)->env, 1); } while (0) |
264 | # define coro_transfer(p,n) do { if (!coro_setjmp ((p)->env)) coro_longjmp ((n)->env); } while (0) |
| 258 | # endif |
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| 259 | |
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| 260 | # define coro_destroy(ctx) (void *)(ctx) |
265 | # define coro_destroy(ctx) (void *)(ctx) |
| 261 | |
266 | |
| 262 | #elif CORO_ASM |
267 | #elif CORO_ASM |
| 263 | |
268 | |
| 264 | struct coro_context { |
269 | struct coro_context { |
