ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libcoro/coro.h
(Generate patch)

Comparing libcoro/coro.h (file contents):
Revision 1.6 by root, Sun Sep 16 01:34:36 2001 UTC vs.
Revision 1.9 by root, Thu Mar 3 17:20:31 2005 UTC

1/* 1/*
2 * Copyright (c) 2001 Marc Alexander Lehmann <pcg@goof.com> 2 * Copyright (c) 2001-2005 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,
… …
28 * This library is modelled strictly after Ralf S. Engelschalls article at 28 * This library is modelled strictly after Ralf S. Engelschalls article at
29 * http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must 29 * http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must
30 * go to Ralf S. Engelschall <rse@engelschall.com>. 30 * go to Ralf S. Engelschall <rse@engelschall.com>.
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 avstraction 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 * VERSION: 0.1
37 */ 36 */
38 37
39#ifndef CORO_H 38#ifndef CORO_H
40#define CORO_H 39#define CORO_H
41 40
41#define CORO_VERSION 1
42
42/* 43/*
43 * This library consists of only three files 44 * This library consists of only three files
44 * coro.h, coro.c and LICENSE 45 * coro.h, coro.c and LICENSE (and optionally README)
45 * 46 *
46 * It implements what is known as coroutines, in a hopefully 47 * It implements what is known as coroutines, in a hopefully
47 * portable way. At the moment you have to define which kind 48 * portable way. At the moment you have to define which kind
48 * of implementation flavour you want: 49 * of implementation flavour you want:
49 * 50 *
… …
101 * and the single pointer value that is given to it as argument. 102 * and the single pointer value that is given to it as argument.
102 * 103 *
103 * Allocating/deallocating the stack is your own responsibility, so there is 104 * Allocating/deallocating the stack is your own responsibility, so there is
104 * no coro_destroy function. 105 * no coro_destroy function.
105 */ 106 */
106void coro_create(coro_context *ctx, 107void coro_create (coro_context *ctx,
107 coro_func coro, void *arg, 108 coro_func coro, void *arg,
108 void *sptr, long ssize); 109 void *sptr, long ssize);
109 110
110/* 111/*
111 * The following prototype defines the coroutine switching function. It is 112 * The following prototype defines the coroutine switching function. It is
112 * usually implemented as a macro, so watch out. 113 * usually implemented as a macro, so watch out.
113 * 114 *
… …
143 144
144struct coro_context { 145struct coro_context {
145 ucontext_t uc; 146 ucontext_t uc;
146}; 147};
147 148
148#define coro_transfer(p,n) swapcontext(&((p)->uc), &((n)->uc)) 149#define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc))
149 150
150#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 151#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX
152
153#ifdef CORO_LINUX
154# define _GNU_SOURCE // for linux libc
155#endif
151 156
152#include <setjmp.h> 157#include <setjmp.h>
153 158
154struct coro_context { 159struct coro_context {
155 jmp_buf env; 160 jmp_buf env;
156}; 161};
157 162
158#define coro_transfer(p,n) if (!setjmp ((p)->env)) longjmp ((n)->env, 1) 163#define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while(0)
159 164
160#endif 165#endif
161 166
162#endif 167#endif
163 168

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines