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Comparing libcoro/coro.h (file contents):
Revision 1.13 by root, Sun Feb 19 22:30:58 2006 UTC vs.
Revision 1.20 by root, Fri Apr 27 19:26:18 2007 UTC

1/* 1/*
2 * Copyright (c) 2001-2005 Marc Alexander Lehmann <schmorp@schmorp.de> 2 * Copyright (c) 2001-2006 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,
… …
31 * 31 *
32 * This coroutine library is very much stripped down. You should either 32 * This coroutine library is very much stripped down. You should either
33 * build your own process abstraction using it or - better - just use GNU 33 * build your own process abstraction using it or - better - just use GNU
34 * Portable Threads, http://www.gnu.org/software/pth/. 34 * Portable Threads, http://www.gnu.org/software/pth/.
35 * 35 *
36 */
37
38/*
39 * 2006-10-26 Include stddef.h on OS X to work around one of its bugs.
40 * Reported by Michael_G_Schwern.
41 * 2006-11-26 Use _setjmp instead of setjmp on GNU/Linux.
42 * 2007-04-27 Set unwind frame info if gcc 3+ and ELF is detected.
36 */ 43 */
37 44
38#ifndef CORO_H 45#ifndef CORO_H
39#define CORO_H 46#define CORO_H
40 47
… …
93 * This is the type for the initialization function of a new coroutine. 100 * This is the type for the initialization function of a new coroutine.
94 */ 101 */
95typedef void (*coro_func)(void *); 102typedef void (*coro_func)(void *);
96 103
97/* 104/*
98 * A coroutine state is saved in the following structure. Treat it as a 105 * A coroutine state is saved in the following structure. Treat it as an
99 * opaque type. errno and sigmask might be saved, but don't rely on it, 106 * opaque type. errno and sigmask might be saved, but don't rely on it,
100 * implement your own switching primitive. 107 * implement your own switching primitive if you need that.
101 */ 108 */
102typedef struct coro_context coro_context; 109typedef struct coro_context coro_context;
103 110
104/* 111/*
105 * This function creates a new coroutine. Apart from a pointer to an 112 * This function creates a new coroutine. Apart from a pointer to an
… …
107 * and the single pointer value that is given to it as argument. 114 * and the single pointer value that is given to it as argument.
108 * 115 *
109 * Allocating/deallocating the stack is your own responsibility, so there is 116 * Allocating/deallocating the stack is your own responsibility, so there is
110 * no coro_destroy function. 117 * no coro_destroy function.
111 */ 118 */
112void coro_create (coro_context *ctx, 119void coro_create (coro_context *ctx, /* an uninitialised coro_context */
113 coro_func coro, void *arg, 120 coro_func coro, /* the coroutine code to be executed */
114 void *sptr, long ssize); 121 void *arg, /* a single pointer passed to the coro */
122 void *sptr, /* start of stack area */
123 long ssize); /* size of stack area */
115 124
116/* 125/*
117 * The following prototype defines the coroutine switching function. It is 126 * The following prototype defines the coroutine switching function. It is
118 * usually implemented as a macro, so watch out. 127 * usually implemented as a macro, so watch out.
119 * 128 *
… …
154#define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc)) 163#define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc))
155 164
156#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX 165#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
157 166
158#if defined(CORO_LINUX) && !defined(_GNU_SOURCE) 167#if defined(CORO_LINUX) && !defined(_GNU_SOURCE)
159# define _GNU_SOURCE // for linux libc 168# define _GNU_SOURCE /* for linux libc */
160#endif 169#endif
161 170
162#include <setjmp.h> 171#include <setjmp.h>
163 172
164struct coro_context { 173struct coro_context {
165 jmp_buf env; 174 jmp_buf env;
166}; 175};
167 176
177#if CORO_LINUX
168#define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while(0) 178# define coro_transfer(p,n) do { if (!_setjmp ((p)->env)) _longjmp ((n)->env, 1); } while (0)
179#else
180# define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while (0)
181#endif
169 182
170#endif 183#endif
171 184
172#endif 185#endif
173 186

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