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, |
… | |
… | |
52 | * 2007-05-02 Add assembly versions for x86 and amd64 (to avoid reliance |
52 | * 2007-05-02 Add assembly versions for x86 and amd64 (to avoid reliance |
53 | * on SIGUSR2 and sigaltstack in Crossfire). |
53 | * on SIGUSR2 and sigaltstack in Crossfire). |
54 | * 2008-01-21 Disable CFI usage on anything but GNU/Linux. |
54 | * 2008-01-21 Disable CFI usage on anything but GNU/Linux. |
55 | * 2008-03-02 Switched to 2-clause BSD license with GPL exception. |
55 | * 2008-03-02 Switched to 2-clause BSD license with GPL exception. |
56 | * 2008-04-04 New (but highly unrecommended) pthreads backend. |
56 | * 2008-04-04 New (but highly unrecommended) pthreads backend. |
|
|
57 | * 2008-04-24 Reinstate CORO_LOSER (had wrong stack adjustments). |
|
|
58 | * 2008-10-30 Support assembly method on x86 with and without frame pointer. |
|
|
59 | * 2008-11-03 Use a global asm statement for CORO_ASM, idea by pippijn. |
|
|
60 | * 2008-11-05 Hopefully fix misaligned stacks with CORO_ASM/SETJMP. |
|
|
61 | * 2008-11-07 rbp wasn't saved in CORO_ASM on x86_64. |
|
|
62 | * introduce coro_destroy, which is a nop except for pthreads. |
|
|
63 | * speed up CORO_PTHREAD. Do no longer leak threads either. |
|
|
64 | * coro_create now allows one to create source coro_contexts. |
|
|
65 | * do not rely on makecontext passing a void * correctly. |
|
|
66 | * try harder to get _setjmp/_longjmp. |
|
|
67 | * major code cleanup/restructuring. |
|
|
68 | * 2008-11-10 the .cfi hacks are no longer needed. |
|
|
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). |
|
|
80 | * 2012-12-07 API version 3 - add coro_stack_alloc/coro_stack_free. |
57 | */ |
81 | */ |
58 | |
82 | |
59 | #ifndef CORO_H |
83 | #ifndef CORO_H |
60 | #define CORO_H |
84 | #define CORO_H |
61 | |
85 | |
62 | #define CORO_VERSION 2 |
86 | #if __cplusplus |
63 | |
87 | extern "C" { |
64 | /* |
88 | #endif |
65 | * Changes since API version 1: |
|
|
66 | * replaced bogus -DCORO_LOOSE with gramatically more correct -DCORO_LOSER |
|
|
67 | */ |
|
|
68 | |
89 | |
69 | /* |
90 | /* |
70 | * This library consists of only three files |
91 | * This library consists of only three files |
71 | * coro.h, coro.c and LICENSE (and optionally README) |
92 | * coro.h, coro.c and LICENSE (and optionally README) |
72 | * |
93 | * |
73 | * It implements what is known as coroutines, in a hopefully |
94 | * It implements what is known as coroutines, in a hopefully |
74 | * portable way. At the moment you have to define which kind |
95 | * portable way. |
75 | * of implementation flavour you want: |
96 | * |
|
|
97 | * All compiletime symbols must be defined both when including coro.h |
|
|
98 | * (using libcoro) as well as when compiling coro.c (the implementation). |
|
|
99 | * |
|
|
100 | * You can manually specify which flavour you want. If you don't define |
|
|
101 | * any of these, libcoro tries to choose a safe and fast default: |
76 | * |
102 | * |
77 | * -DCORO_UCONTEXT |
103 | * -DCORO_UCONTEXT |
78 | * |
104 | * |
79 | * This flavour uses SUSv2's get/set/swap/makecontext functions that |
105 | * This flavour uses SUSv2's get/set/swap/makecontext functions that |
80 | * unfortunately only newer unices support. |
106 | * unfortunately only some unices support, and is quite slow. |
81 | * |
107 | * |
82 | * -DCORO_SJLJ |
108 | * -DCORO_SJLJ |
83 | * |
109 | * |
84 | * This flavour uses SUSv2's setjmp/longjmp and sigaltstack functions to |
110 | * This flavour uses SUSv2's setjmp/longjmp and sigaltstack functions to |
85 | * do it's job. Coroutine creation is much slower than UCONTEXT, but |
111 | * do it's job. Coroutine creation is much slower than UCONTEXT, but |
86 | * context switching is often a bit cheaper. It should work on almost |
112 | * context switching is a bit cheaper. It should work on almost all unices. |
87 | * all unices. |
|
|
88 | * |
113 | * |
89 | * -DCORO_LINUX |
114 | * -DCORO_LINUX |
90 | * |
115 | * |
|
|
116 | * CORO_SJLJ variant. |
91 | * Old GNU/Linux systems (<= glibc-2.1) only work with this implementation |
117 | * Old GNU/Linux systems (<= glibc-2.1) only work with this implementation |
92 | * (it is very fast and therefore recommended over other methods, but |
118 | * (it is very fast and therefore recommended over other methods, but |
93 | * doesn't work with anything newer). |
119 | * doesn't work with anything newer). |
94 | * |
120 | * |
95 | * -DCORO_LOSER |
121 | * -DCORO_LOSER |
96 | * |
122 | * |
|
|
123 | * CORO_SJLJ variant. |
97 | * Microsoft's highly proprietary platform doesn't support sigaltstack, and |
124 | * Microsoft's highly proprietary platform doesn't support sigaltstack, and |
98 | * this automatically selects a suitable workaround for this platform. |
125 | * this selects a suitable workaround for this platform. It might not work |
99 | * (untested) |
126 | * with your compiler though - it has only been tested with MSVC 6. |
|
|
127 | * |
|
|
128 | * -DCORO_FIBER |
|
|
129 | * |
|
|
130 | * Slower, but probably more portable variant for the Microsoft operating |
|
|
131 | * system, using fibers. Ignores the passed stack and allocates it internally. |
|
|
132 | * Also, due to bugs in cygwin, this does not work with cygwin. |
100 | * |
133 | * |
101 | * -DCORO_IRIX |
134 | * -DCORO_IRIX |
102 | * |
135 | * |
|
|
136 | * CORO_SJLJ variant. |
103 | * SGI's version of Microsoft's NT ;) |
137 | * For SGI's version of Microsoft's NT ;) |
104 | * |
138 | * |
105 | * -DCORO_ASM |
139 | * -DCORO_ASM |
106 | * |
140 | * |
107 | * Handcoded assembly, known to work only on a few architectures/ABI: |
141 | * Hand coded assembly, known to work only on a few architectures/ABI: |
108 | * ELF Linux x86 && amd64 when gcc is used and optimisation is turned on. |
142 | * GCC + x86/IA32 and amd64/x86_64 + GNU/Linux and a few BSDs. Fastest choice, |
|
|
143 | * if it works. |
109 | * |
144 | * |
110 | * -DCORO_PTHREAD |
145 | * -DCORO_PTHREAD |
111 | * |
146 | * |
112 | * Use the pthread API. You have to provide <pthread.h> and -lpthread. |
147 | * Use the pthread API. You have to provide <pthread.h> and -lpthread. |
|
|
148 | * This is likely the slowest backend, and it also does not support fork(), |
|
|
149 | * so avoid it at all costs. |
113 | * |
150 | * |
114 | * If you define neither of these symbols, coro.h will try to autodetect |
151 | * If you define neither of these symbols, coro.h will try to autodetect |
115 | * the model. This currently works for CORO_LOSER only. For the other |
152 | * the best/safest model. To help with the autodetection, you should check |
116 | * alternatives you should check (e.g. using autoconf) and define the |
153 | * (e.g. using autoconf) and define the following symbols: HAVE_UCONTEXT_H |
117 | * following symbols: HAVE_UCONTEXT_H / HAVE_SETJMP_H / HAVE_SIGALTSTACK. |
154 | * / HAVE_SETJMP_H / HAVE_SIGALTSTACK. |
|
|
155 | */ |
|
|
156 | |
|
|
157 | /* |
|
|
158 | * Changes when the API changes incompatibly. |
|
|
159 | * This is ONLY the API version - there is no ABI compatibility between releases. |
118 | */ |
160 | * |
|
|
161 | * Changes in API version 2: |
|
|
162 | * replaced bogus -DCORO_LOOSE with grammatically more correct -DCORO_LOSER |
|
|
163 | * Changes in API version 3: |
|
|
164 | * introduced stack management (CORO_STACKALLOC) |
|
|
165 | */ |
|
|
166 | #define CORO_VERSION 3 |
|
|
167 | |
|
|
168 | #include <stddef.h> |
119 | |
169 | |
120 | /* |
170 | /* |
121 | * This is the type for the initialization function of a new coroutine. |
171 | * This is the type for the initialization function of a new coroutine. |
122 | */ |
172 | */ |
123 | typedef void (*coro_func)(void *); |
173 | typedef void (*coro_func)(void *); |
… | |
… | |
132 | /* |
182 | /* |
133 | * This function creates a new coroutine. Apart from a pointer to an |
183 | * This function creates a new coroutine. Apart from a pointer to an |
134 | * uninitialised coro_context, it expects a pointer to the entry function |
184 | * uninitialised coro_context, it expects a pointer to the entry function |
135 | * and the single pointer value that is given to it as argument. |
185 | * and the single pointer value that is given to it as argument. |
136 | * |
186 | * |
137 | * Allocating/deallocating the stack is your own responsibility, so there is |
187 | * Allocating/deallocating the stack is your own responsibility. |
138 | * no coro_destroy function. |
188 | * |
|
|
189 | * As a special case, if coro, arg, sptr and ssze are all zero, |
|
|
190 | * then an "empty" coro_context will be created that is suitable |
|
|
191 | * as an initial source for coro_transfer. |
|
|
192 | * |
|
|
193 | * This function is not reentrant, but putting a mutex around it |
|
|
194 | * will work. |
139 | */ |
195 | */ |
140 | void coro_create (coro_context *ctx, /* an uninitialised coro_context */ |
196 | void coro_create (coro_context *ctx, /* an uninitialised coro_context */ |
141 | coro_func coro, /* the coroutine code to be executed */ |
197 | coro_func coro, /* the coroutine code to be executed */ |
142 | void *arg, /* a single pointer passed to the coro */ |
198 | void *arg, /* a single pointer passed to the coro */ |
143 | void *sptr, /* start of stack area */ |
199 | void *sptr, /* start of stack area */ |
144 | long ssize); /* size of stack area */ |
200 | size_t ssze); /* size of stack area in bytes */ |
145 | |
201 | |
146 | /* |
202 | /* |
147 | * The following prototype defines the coroutine switching function. It is |
203 | * The following prototype defines the coroutine switching function. It is |
148 | * usually implemented as a macro, so watch out. |
204 | * sometimes implemented as a macro, so watch out. |
|
|
205 | * |
|
|
206 | * This function is thread-safe and reentrant. |
149 | * |
207 | */ |
|
|
208 | #if 0 |
150 | void coro_transfer(coro_context *prev, coro_context *next); |
209 | void coro_transfer (coro_context *prev, coro_context *next); |
|
|
210 | #endif |
|
|
211 | |
|
|
212 | /* |
|
|
213 | * The following prototype defines the coroutine destroy function. It |
|
|
214 | * is sometimes implemented as a macro, so watch out. It also serves no |
|
|
215 | * purpose unless you want to use the CORO_PTHREAD backend, where it is |
|
|
216 | * used to clean up the thread. You are responsible for freeing the stack |
|
|
217 | * and the context itself. |
151 | */ |
218 | * |
152 | |
219 | * This function is thread-safe and reentrant. |
153 | /* |
|
|
154 | * That was it. No other user-visible functions are implemented here. |
|
|
155 | */ |
220 | */ |
|
|
221 | #if 0 |
|
|
222 | void coro_destroy (coro_context *ctx); |
|
|
223 | #endif |
156 | |
224 | |
157 | /*****************************************************************************/ |
225 | /*****************************************************************************/ |
|
|
226 | /* optional stack management */ |
|
|
227 | /*****************************************************************************/ |
|
|
228 | /* |
|
|
229 | * You can disable all of the stack management functions by |
|
|
230 | * defining CORO_STACKALLOC to 0. Otherwise, they are enabled by default. |
|
|
231 | * |
|
|
232 | * If stack management is enabled, you can influence the implementation via these |
|
|
233 | * symbols: |
|
|
234 | * |
|
|
235 | * -DCORO_USE_VALGRIND |
|
|
236 | * |
|
|
237 | * If defined, then libcoro will include valgrind/valgrind.h and register |
|
|
238 | * and unregister stacks with valgrind. |
|
|
239 | * |
|
|
240 | * -DCORO_GUARDPAGES=n |
|
|
241 | * |
|
|
242 | * libcoro will try to use the specified number of guard pages to protect against |
|
|
243 | * stack overflow. If n is 0, then the feature will be disabled. If it isn't |
|
|
244 | * defined, then libcoro will choose a suitable default. If guardpages are not |
|
|
245 | * supported on the platform, then the feature will be silently disabled. |
|
|
246 | */ |
|
|
247 | #ifndef CORO_STACKALLOC |
|
|
248 | # define CORO_STACKALLOC 1 |
|
|
249 | #endif |
158 | |
250 | |
|
|
251 | #if CORO_STACKALLOC |
|
|
252 | |
|
|
253 | /* |
|
|
254 | * The only allowed operations on these struct members is to read the |
|
|
255 | * "sptr" and "ssze" members to pass it to coro_create, to read the "sptr" |
|
|
256 | * member to see if it is false, in which case the stack isn't allocated, |
|
|
257 | * and to set the "sptr" member to 0, to indicate to coro_stack_free to |
|
|
258 | * not actually do anything. |
|
|
259 | */ |
|
|
260 | |
|
|
261 | struct coro_stack |
|
|
262 | { |
|
|
263 | void *sptr; |
|
|
264 | size_t ssze; |
|
|
265 | #if CORO_USE_VALGRIND |
|
|
266 | int valgrind_id; |
|
|
267 | #endif |
|
|
268 | }; |
|
|
269 | |
|
|
270 | /* |
|
|
271 | * Try to allocate a stack of at least the given size and return true if |
|
|
272 | * successful, or false otherwise. |
|
|
273 | * |
|
|
274 | * The size is *NOT* specified in bytes, but in units of sizeof (void *), |
|
|
275 | * i.e. the stack is typically 4(8) times larger on 32 bit(64 bit) platforms |
|
|
276 | * then the size passed in. |
|
|
277 | * |
|
|
278 | * If size is 0, then a "suitable" stack size is chosen (usually 1-2MB). |
|
|
279 | */ |
|
|
280 | int coro_stack_alloc (struct coro_stack *stack, unsigned int size); |
|
|
281 | |
|
|
282 | /* |
|
|
283 | * Free the stack allocated by coro_stack_alloc again. It is safe to |
|
|
284 | * call this function on the coro_stack structure even if coro_stack_alloc |
|
|
285 | * failed. |
|
|
286 | */ |
|
|
287 | void coro_stack_free (struct coro_stack *stack); |
|
|
288 | |
|
|
289 | #endif |
|
|
290 | |
|
|
291 | /* |
|
|
292 | * That was it. No other user-serviceable parts below here. |
|
|
293 | */ |
|
|
294 | |
|
|
295 | /*****************************************************************************/ |
|
|
296 | |
159 | #if !defined(CORO_LOSER) && !defined(CORO_UCONTEXT) \ |
297 | #if !defined CORO_LOSER && !defined CORO_UCONTEXT \ |
160 | && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \ |
298 | && !defined CORO_SJLJ && !defined CORO_LINUX \ |
161 | && !defined(CORO_IRIX) && !defined(CORO_ASM) \ |
299 | && !defined CORO_IRIX && !defined CORO_ASM \ |
162 | && !defined(CORO_PTHREAD) |
300 | && !defined CORO_PTHREAD && !defined CORO_FIBER |
163 | # if defined(WINDOWS) |
301 | # if defined WINDOWS && (defined __x86 || defined __amd64 || defined _M_IX86 || defined _M_AMD64) |
|
|
302 | # define CORO_ASM 1 |
|
|
303 | # elif defined WINDOWS || defined _WIN32 |
164 | # define CORO_LOSER 1 /* you don't win with windoze */ |
304 | # define CORO_LOSER 1 /* you don't win with windoze */ |
165 | # elif defined(__linux) && (defined(__x86) || defined (__amd64)) |
305 | # elif defined __linux && (defined __x86 || defined __amd64) |
166 | # define CORO_ASM 1 |
306 | # define CORO_ASM 1 |
167 | # elif defined(HAVE_UCONTEXT_H) |
307 | # elif defined HAVE_UCONTEXT_H |
168 | # define CORO_UCONTEXT 1 |
308 | # define CORO_UCONTEXT 1 |
169 | # elif defined(HAVE_SETJMP_H) && defined(HAVE_SIGALTSTACK) |
309 | # elif defined HAVE_SETJMP_H && defined HAVE_SIGALTSTACK |
170 | # define CORO_SJLJ 1 |
310 | # define CORO_SJLJ 1 |
171 | # else |
311 | # else |
172 | error unknown or unsupported architecture |
312 | error unknown or unsupported architecture |
173 | # endif |
313 | # endif |
174 | #endif |
314 | #endif |
… | |
… | |
177 | |
317 | |
178 | #if CORO_UCONTEXT |
318 | #if CORO_UCONTEXT |
179 | |
319 | |
180 | # include <ucontext.h> |
320 | # include <ucontext.h> |
181 | |
321 | |
182 | struct coro_context { |
322 | struct coro_context |
|
|
323 | { |
183 | ucontext_t uc; |
324 | ucontext_t uc; |
184 | }; |
325 | }; |
185 | |
326 | |
186 | # define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc)) |
327 | # define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc)) |
|
|
328 | # define coro_destroy(ctx) (void *)(ctx) |
187 | |
329 | |
188 | #elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
330 | #elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
189 | |
331 | |
190 | # if defined(CORO_LINUX) && !defined(_GNU_SOURCE) |
332 | # if defined(CORO_LINUX) && !defined(_GNU_SOURCE) |
191 | # define _GNU_SOURCE /* for linux libc */ |
333 | # define _GNU_SOURCE /* for glibc */ |
192 | # endif |
334 | # endif |
193 | |
335 | |
|
|
336 | # if !CORO_LOSER |
|
|
337 | # include <unistd.h> |
|
|
338 | # endif |
|
|
339 | |
|
|
340 | /* solaris is hopelessly borked, it expands _XOPEN_UNIX to nothing */ |
|
|
341 | # if __sun |
|
|
342 | # undef _XOPEN_UNIX |
|
|
343 | # define _XOPEN_UNIX 1 |
|
|
344 | # endif |
|
|
345 | |
194 | # include <setjmp.h> |
346 | # include <setjmp.h> |
195 | |
347 | |
196 | struct coro_context { |
348 | # if _XOPEN_UNIX > 0 || defined (_setjmp) |
197 | jmp_buf env; |
349 | # define coro_jmp_buf jmp_buf |
198 | }; |
350 | # define coro_setjmp(env) _setjmp (env) |
199 | |
351 | # define coro_longjmp(env) _longjmp ((env), 1) |
200 | # if CORO_LINUX || (_XOPEN_SOURCE >= 600) |
352 | # elif CORO_LOSER |
201 | # define coro_transfer(p,n) do { if (!_setjmp ((p)->env)) _longjmp ((n)->env, 1); } while (0) |
353 | # define coro_jmp_buf jmp_buf |
|
|
354 | # define coro_setjmp(env) setjmp (env) |
|
|
355 | # define coro_longjmp(env) longjmp ((env), 1) |
202 | # else |
356 | # else |
203 | # define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while (0) |
357 | # define coro_jmp_buf sigjmp_buf |
|
|
358 | # define coro_setjmp(env) sigsetjmp (env, 0) |
|
|
359 | # define coro_longjmp(env) siglongjmp ((env), 1) |
204 | # endif |
360 | # endif |
205 | |
361 | |
|
|
362 | struct coro_context |
|
|
363 | { |
|
|
364 | coro_jmp_buf env; |
|
|
365 | }; |
|
|
366 | |
|
|
367 | # define coro_transfer(p,n) do { if (!coro_setjmp ((p)->env)) coro_longjmp ((n)->env); } while (0) |
|
|
368 | # define coro_destroy(ctx) (void *)(ctx) |
|
|
369 | |
206 | #elif CORO_ASM |
370 | #elif CORO_ASM |
207 | |
371 | |
208 | struct coro_context { |
372 | struct coro_context |
209 | volatile void **sp; |
373 | { |
|
|
374 | void **sp; /* must be at offset 0 */ |
210 | }; |
375 | }; |
211 | |
376 | |
212 | void __attribute__ ((__noinline__, __fastcall__)) |
377 | void __attribute__ ((__noinline__, __regparm__(2))) |
213 | coro_transfer (coro_context *prev, coro_context *next); |
378 | coro_transfer (coro_context *prev, coro_context *next); |
|
|
379 | |
|
|
380 | # define coro_destroy(ctx) (void *)(ctx) |
214 | |
381 | |
215 | #elif CORO_PTHREAD |
382 | #elif CORO_PTHREAD |
216 | |
383 | |
217 | #include <pthread.h> |
384 | # include <pthread.h> |
218 | |
385 | |
219 | extern pthread_mutex_t coro_mutex; |
386 | extern pthread_mutex_t coro_mutex; |
220 | |
387 | |
221 | struct coro_context { |
388 | struct coro_context |
|
|
389 | { |
222 | pthread_cond_t c; |
390 | pthread_cond_t cv; |
|
|
391 | pthread_t id; |
223 | }; |
392 | }; |
224 | |
393 | |
225 | void coro_transfer (coro_context *prev, coro_context *next); |
394 | void coro_transfer (coro_context *prev, coro_context *next); |
|
|
395 | void coro_destroy (coro_context *ctx); |
226 | |
396 | |
227 | #endif |
397 | #elif CORO_FIBER |
228 | |
398 | |
229 | #endif |
399 | struct coro_context |
|
|
400 | { |
|
|
401 | void *fiber; |
|
|
402 | /* only used for initialisation */ |
|
|
403 | coro_func coro; |
|
|
404 | void *arg; |
|
|
405 | }; |
230 | |
406 | |
|
|
407 | void coro_transfer (coro_context *prev, coro_context *next); |
|
|
408 | void coro_destroy (coro_context *ctx); |
|
|
409 | |
|
|
410 | #endif |
|
|
411 | |
|
|
412 | #if __cplusplus |
|
|
413 | } |
|
|
414 | #endif |
|
|
415 | |
|
|
416 | #endif |
|
|
417 | |