1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2011 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, |
… | |
… | |
73 | * 2011-05-30 set initial callee-saved-registers to zero with CORO_ASM. |
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. |
74 | * use .cfi_undefined rip on linux-amd64 for better backtraces. |
75 | * 2011-06-08 maybe properly implement weird windows amd64 calling conventions. |
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. |
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. |
77 | * 2011-08-08 cygwin trashes stacks, use pthreads with double stack on cygwin. |
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78 | * 2012-12-04 reduce misprediction penalty for x86/amd64 assembly switcher. |
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79 | * 2012-12-05 experimental fiber backend (allocates stack twice). |
78 | */ |
80 | */ |
79 | |
81 | |
80 | #ifndef CORO_H |
82 | #ifndef CORO_H |
81 | #define CORO_H |
83 | #define CORO_H |
82 | |
84 | |
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120 | * -DCORO_LOSER |
122 | * -DCORO_LOSER |
121 | * |
123 | * |
122 | * Microsoft's highly proprietary platform doesn't support sigaltstack, and |
124 | * Microsoft's highly proprietary platform doesn't support sigaltstack, and |
123 | * this automatically selects a suitable workaround for this platform. |
125 | * this automatically selects a suitable workaround for this platform. |
124 | * (untested) |
126 | * (untested) |
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127 | * |
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128 | * -DCORO_FIBER |
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129 | * |
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130 | * slower, but probably more portable variant for the Microsoft operating |
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131 | * system, using fibers. ignores your stack. |
125 | * |
132 | * |
126 | * -DCORO_IRIX |
133 | * -DCORO_IRIX |
127 | * |
134 | * |
128 | * SGI's version of Microsoft's NT ;) |
135 | * SGI's version of Microsoft's NT ;) |
129 | * |
136 | * |
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203 | * That was it. No other user-visible functions are implemented here. |
210 | * That was it. No other user-visible functions are implemented here. |
204 | */ |
211 | */ |
205 | |
212 | |
206 | /*****************************************************************************/ |
213 | /*****************************************************************************/ |
207 | |
214 | |
208 | #if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \ |
215 | #if !defined CORO_LOSER && !defined CORO_UCONTEXT \ |
209 | && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \ |
216 | && !defined CORO_SJLJ && !defined CORO_LINUX \ |
210 | && !defined(CORO_IRIX) && !defined(CORO_ASM) \ |
217 | && !defined CORO_IRIX && !defined CORO_ASM \ |
211 | && !defined(CORO_PTHREAD) |
218 | && !defined CORO_PTHREAD && !defined CORO_FIBER |
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219 | # if defined WINDOWS && (defined __x86 || defined __amd64 || defined _M_IX86 || defined _M_AMD64) |
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220 | # define CORO_ASM 1 |
212 | # if defined(WINDOWS) || defined(_WIN32) |
221 | # elif defined WINDOWS || defined _WIN32 |
213 | # define CORO_LOSER 1 /* you don't win with windoze */ |
222 | # define CORO_LOSER 1 /* you don't win with windoze */ |
214 | # elif defined(__linux) && (defined(__x86) || defined (__amd64)) |
223 | # elif defined __linux && (defined __x86 || defined __amd64) |
215 | # define CORO_ASM 1 |
224 | # define CORO_ASM 1 |
216 | # elif defined(HAVE_UCONTEXT_H) |
225 | # elif defined HAVE_UCONTEXT_H |
217 | # define CORO_UCONTEXT 1 |
226 | # define CORO_UCONTEXT 1 |
218 | # elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) |
227 | # elif defined HAVE_SETJMP_H && defined HAVE_SIGALTSTACK |
219 | # define CORO_SJLJ 1 |
228 | # define CORO_SJLJ 1 |
220 | # else |
229 | # else |
221 | error unknown or unsupported architecture |
230 | error unknown or unsupported architecture |
222 | # endif |
231 | # endif |
223 | #endif |
232 | #endif |
… | |
… | |
297 | }; |
306 | }; |
298 | |
307 | |
299 | void coro_transfer (coro_context *prev, coro_context *next); |
308 | void coro_transfer (coro_context *prev, coro_context *next); |
300 | void coro_destroy (coro_context *ctx); |
309 | void coro_destroy (coro_context *ctx); |
301 | |
310 | |
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311 | #elif CORO_FIBER |
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312 | |
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313 | struct coro_context { |
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314 | void *fiber; |
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315 | /* only used for initialisation */ |
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316 | coro_func coro; |
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317 | void *arg; |
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318 | }; |
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319 | |
302 | #endif |
320 | #endif |
303 | |
321 | |
304 | #if __cplusplus |
322 | #if __cplusplus |
305 | } |
323 | } |
306 | #endif |
324 | #endif |