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/cvs/libcoro/coro.c
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Comparing libcoro/coro.c (file contents):
Revision 1.13 by root, Thu Mar 3 17:20:31 2005 UTC vs.
Revision 1.20 by root, Thu Oct 26 05:20:47 2006 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,
… …
38# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) 38# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
39# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) 39# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
40# elif __i386__ && CORO_LINUX 40# elif __i386__ && CORO_LINUX
41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) 41# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
42# define STACK_ADJUST_SIZE(sp,ss) (ss) 42# define STACK_ADJUST_SIZE(sp,ss) (ss)
43# elif __amd64__ && CORO_LINUX
44# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
45# define STACK_ADJUST_SIZE(sp,ss) (ss)
43# else 46# else
44# define STACK_ADJUST_PTR(sp,ss) (sp) 47# define STACK_ADJUST_PTR(sp,ss) (sp)
45# define STACK_ADJUST_SIZE(sp,ss) (ss) 48# define STACK_ADJUST_SIZE(sp,ss) (ss)
46# endif 49# endif
47#endif 50#endif
48 51
52#if CORO_UCONTEXT
53# include <stddef.h>
54#endif
55
49#if CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 56#if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
50 57
58#include <stdlib.h>
59
60#if CORO_SJLJ
61# include <stdio.h>
51#include <signal.h> 62# include <signal.h>
63# include <unistd.h>
64#endif
52 65
53static volatile coro_func coro_init_func; 66static volatile coro_func coro_init_func;
54static volatile void *coro_init_arg; 67static volatile void *coro_init_arg;
55static volatile coro_context *new_coro, *create_coro; 68static volatile coro_context *new_coro, *create_coro;
56 69
… …
72 85
73static volatile int trampoline_count; 86static volatile int trampoline_count;
74 87
75/* trampoline signal handler */ 88/* trampoline signal handler */
76static void 89static void
77trampoline(int sig) 90trampoline (int sig)
78{ 91{
79 if (setjmp (((coro_context *)new_coro)->env)) 92 if (setjmp (((coro_context *)new_coro)->env))
80 coro_init (); /* start it */ 93 coro_init (); /* start it */
81 else 94 else
82 trampoline_count++; 95 trampoline_count++;
… …
100 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); 113 ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize);
101 ctx->uc.uc_stack.ss_flags = 0; 114 ctx->uc.uc_stack.ss_flags = 0;
102 115
103 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); 116 makecontext (&(ctx->uc), (void (*)()) coro, 1, arg);
104 117
105#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX 118#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
106 119
107# if CORO_SJLJ 120# if CORO_SJLJ
108 stack_t ostk, nstk; 121 stack_t ostk, nstk;
109 struct sigaction osa, nsa; 122 struct sigaction osa, nsa;
110 sigset_t nsig, osig; 123 sigset_t nsig, osig;
… …
156 abort (); 169 abort ();
157 170
158 if (~ostk.ss_flags & SS_DISABLE) 171 if (~ostk.ss_flags & SS_DISABLE)
159 sigaltstack (&ostk, 0); 172 sigaltstack (&ostk, 0);
160 173
161 sigaction (SIGUSR1, &osa, 0); 174 sigaction (SIGUSR2, &osa, 0);
162 175
163 sigprocmask (SIG_SETMASK, &osig, 0); 176 sigprocmask (SIG_SETMASK, &osig, 0);
164 177
165# elif CORO_LOOSE 178# elif CORO_LOSER
166 179
167 setjmp (ctx->env); 180 setjmp (ctx->env);
168 ctx->env[7] = (long)((char *)sptr + ssize); 181 ctx->env[7] = (long)((char *)sptr + ssize);
169 ctx->env[8] = (long)coro_init; 182 ctx->env[8] = (long)coro_init;
170 183
… …
182#elif defined(__GNU_LIBRARY__) && defined(__i386__) 195#elif defined(__GNU_LIBRARY__) && defined(__i386__)
183 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; 196 ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init;
184 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); 197 ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize);
185#elif defined(__GNU_LIBRARY__) && defined(__amd64__) 198#elif defined(__GNU_LIBRARY__) && defined(__amd64__)
186 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; 199 ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init;
187 ctx->env[0].__jmpbuf[JB_RSP] = (long)((char *)sptr + ssize); 200 ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr,ssize);
188#else 201#else
189#error "linux libc or architecture not supported" 202#error "linux libc or architecture not supported"
190#endif 203#endif
191 204
192# elif CORO_IRIX 205# elif CORO_IRIX

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