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Comparing libcoro/coro.h (file contents):
Revision 1.39 by root, Sun Nov 16 00:55:41 2008 UTC vs.
Revision 1.51 by root, Wed Dec 5 01:09:12 2012 UTC

1/* 1/*
2 * Copyright (c) 2001-2008 Marc Alexander Lehmann <schmorp@schmorp.de> 2 * Copyright (c) 2001-2012 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,
8 * this list of conditions and the following disclaimer. 8 * this list of conditions and the following disclaimer.
9 * 9 *
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the 11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution. 12 * documentation and/or other materials provided with the distribution.
13 * 13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
16 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 16 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
17 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 17 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
18 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 18 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
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.
70 * 2008-11-19 define coro_*jmp symbols for easier porting.
71 * 2009-06-23 tentative win32-backend support for mingw32 (Yasuhiro Matsumoto).
72 * 2010-12-03 tentative support for uclibc (which lacks all sorts of things).
73 * 2011-05-30 set initial callee-saved-registers to zero with CORO_ASM.
74 * use .cfi_undefined rip on linux-amd64 for better backtraces.
75 * 2011-06-08 maybe properly implement weird windows amd64 calling conventions.
76 * 2011-07-03 rely on __GCC_HAVE_DWARF2_CFI_ASM for cfi detection.
77 * 2011-08-08 cygwin trashes stacks, use pthreads with double stack on cygwin.
78 * 2012-12-04 reduce misprediction penalty for x86/amd64 assembly switcher.
79 * 2012-12-05 experimental fiber backend (allocates stack twice).
70 */ 80 */
71 81
72#ifndef CORO_H 82#ifndef CORO_H
73#define CORO_H 83#define CORO_H
84
85#if __cplusplus
86extern "C" {
87#endif
74 88
75#define CORO_VERSION 2 89#define CORO_VERSION 2
76 90
77/* 91/*
78 * Changes since API version 1: 92 * Changes since API version 1:
… …
108 * -DCORO_LOSER 122 * -DCORO_LOSER
109 * 123 *
110 * Microsoft's highly proprietary platform doesn't support sigaltstack, and 124 * Microsoft's highly proprietary platform doesn't support sigaltstack, and
111 * this automatically selects a suitable workaround for this platform. 125 * this automatically selects a suitable workaround for this platform.
112 * (untested) 126 * (untested)
127 *
128 * -DCORO_FIBER
129 *
130 * slower, but probably more portable variant for the Microsoft operating
131 * system, using fibers. ignores your stack.
113 * 132 *
114 * -DCORO_IRIX 133 * -DCORO_IRIX
115 * 134 *
116 * SGI's version of Microsoft's NT ;) 135 * SGI's version of Microsoft's NT ;)
117 * 136 *
… …
191 * That was it. No other user-visible functions are implemented here. 210 * That was it. No other user-visible functions are implemented here.
192 */ 211 */
193 212
194/*****************************************************************************/ 213/*****************************************************************************/
195 214
196#if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \ 215#if !defined CORO_LOSER && !defined CORO_UCONTEXT \
197 && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \ 216 && !defined CORO_SJLJ && !defined CORO_LINUX \
198 && !defined(CORO_IRIX) && !defined(CORO_ASM) \ 217 && !defined CORO_IRIX && !defined CORO_ASM \
199 && !defined(CORO_PTHREAD) 218 && !defined CORO_PTHREAD && !defined CORO_FIBER
200# if defined(WINDOWS) 219# if defined WINDOWS && (defined __x86 || defined __amd64 || defined _M_IX86 || defined _M_AMD64)
220# define CORO_ASM 1
221# elif defined WINDOWS || defined _WIN32
201# define CORO_LOSER 1 /* you don't win with windoze */ 222# define CORO_LOSER 1 /* you don't win with windoze */
202# elif defined(__linux) && (defined(__x86) || defined (__amd64)) 223# elif defined __linux && (defined __x86 || defined __amd64)
203# define CORO_ASM 1 224# define CORO_ASM 1
204# elif defined(HAVE_UCONTEXT_H) 225# elif defined HAVE_UCONTEXT_H
205# define CORO_UCONTEXT 1 226# define CORO_UCONTEXT 1
206# elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) 227# elif defined HAVE_SETJMP_H && defined HAVE_SIGALTSTACK
207# define CORO_SJLJ 1 228# define CORO_SJLJ 1
208# else 229# else
209error unknown or unsupported architecture 230error unknown or unsupported architecture
210# endif 231# endif
211#endif 232#endif
… …
239# define _XOPEN_UNIX 1 260# define _XOPEN_UNIX 1
240# endif 261# endif
241 262
242# include <setjmp.h> 263# include <setjmp.h>
243 264
244struct coro_context { 265# if _XOPEN_UNIX > 0 || defined (_setjmp)
245#if _XOPEN_UNIX > 0 || CORO_LOSER 266# define coro_jmp_buf jmp_buf
246 jmp_buf env; 267# define coro_setjmp(env) _setjmp (env)
247#else 268# define coro_longjmp(env) _longjmp ((env), 1)
248 sigjmp_buf env;
249#endif
250};
251
252# if _XOPEN_UNIX > 0
253# define coro_transfer(p,n) do { if (! _setjmp ((p)->env )) _longjmp ((n)->env, 1); } while (0)
254# elif CORO_LOSER 269# elif CORO_LOSER
255# define coro_transfer(p,n) do { if (! setjmp ((p)->env )) longjmp ((n)->env, 1); } while (0) 270# define coro_jmp_buf jmp_buf
271# define coro_setjmp(env) setjmp (env)
272# define coro_longjmp(env) longjmp ((env), 1)
256# else 273# else
274# define coro_jmp_buf sigjmp_buf
275# define coro_setjmp(env) sigsetjmp (env, 0)
276# define coro_longjmp(env) siglongjmp ((env), 1)
277# endif
278
279struct coro_context {
280 coro_jmp_buf env;
281};
282
257# define coro_transfer(p,n) do { if (!sigsetjmp ((p)->env, 0)) siglongjmp ((n)->env, 1); } while (0) 283# define coro_transfer(p,n) do { if (!coro_setjmp ((p)->env)) coro_longjmp ((n)->env); } while (0)
258# endif
259
260# define coro_destroy(ctx) (void *)(ctx) 284# define coro_destroy(ctx) (void *)(ctx)
261 285
262#elif CORO_ASM 286#elif CORO_ASM
263 287
264struct coro_context { 288struct coro_context {
… …
282}; 306};
283 307
284void coro_transfer (coro_context *prev, coro_context *next); 308void coro_transfer (coro_context *prev, coro_context *next);
285void coro_destroy (coro_context *ctx); 309void coro_destroy (coro_context *ctx);
286 310
287#endif 311#elif CORO_FIBER
288 312
289#endif 313struct coro_context {
314 void *fiber;
315 /* only used for initialisation */
316 coro_func coro;
317 void *arg;
318};
290 319
320#endif
321
322#if __cplusplus
323}
324#endif
325
326#endif
327

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