1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2006 Marc Alexander Lehmann <schmorp@schmorp.de> |
2 | * Copyright (c) 2001-2009 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 | * |
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14 | * 3. The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
13 | * |
17 | * 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 |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
15 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
16 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * 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- |
… | |
… | |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
20 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
21 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
22 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
23 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * |
24 | * |
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25 | * Alternatively, the contents of this file may be used under the terms of |
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26 | * the GNU General Public License ("GPL") version 2 or any later version, |
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27 | * in which case the provisions of the GPL are applicable instead of |
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28 | * the above. If you wish to allow the use of your version of this file |
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29 | * only under the terms of the GPL and not to allow others to use your |
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30 | * version of this file under the BSD license, indicate your decision |
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31 | * by deleting the provisions above and replace them with the notice |
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32 | * and other provisions required by the GPL. If you do not delete the |
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33 | * provisions above, a recipient may use your version of this file under |
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34 | * either the BSD or the GPL. |
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35 | * |
28 | * This library is modelled strictly after Ralf S. Engelschalls article at |
36 | * 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 |
37 | * http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must |
30 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
38 | * go to Ralf S. Engelschall <rse@engelschall.com>. |
31 | */ |
39 | */ |
32 | |
40 | |
33 | #include "coro.h" |
41 | #include "coro.h" |
34 | |
42 | |
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43 | #include <string.h> |
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44 | |
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45 | /*****************************************************************************/ |
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46 | /* ucontext/setjmp/asm backends */ |
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47 | /*****************************************************************************/ |
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48 | #if CORO_UCONTEXT || CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX || CORO_ASM |
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49 | |
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50 | # if CORO_UCONTEXT |
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51 | # include <stddef.h> |
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52 | # endif |
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53 | |
35 | #if !defined(STACK_ADJUST_PTR) |
54 | # if !defined(STACK_ADJUST_PTR) |
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55 | # if __sgi |
36 | /* IRIX is decidedly NON-unix */ |
56 | /* IRIX is decidedly NON-unix */ |
37 | # if __sgi |
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38 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
57 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
39 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
58 | # define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8) |
40 | # elif __i386__ && CORO_LINUX |
59 | # elif (__i386__ && CORO_LINUX) || (_M_IX86 && CORO_LOSER) |
41 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
60 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss)) |
42 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
61 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
43 | # elif __amd64__ && CORO_LINUX |
62 | # elif (__amd64__ && CORO_LINUX) || ((_M_AMD64 || _M_IA64) && CORO_LOSER) |
44 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
63 | # define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8) |
45 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
64 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
46 | # else |
65 | # else |
47 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
66 | # define STACK_ADJUST_PTR(sp,ss) (sp) |
48 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
67 | # define STACK_ADJUST_SIZE(sp,ss) (ss) |
49 | # endif |
68 | # endif |
50 | #endif |
69 | # endif |
51 | |
70 | |
52 | #if CORO_UCONTEXT |
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53 | # include <stddef.h> |
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54 | #endif |
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55 | |
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56 | #if CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
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57 | |
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58 | #include <stdlib.h> |
71 | # include <stdlib.h> |
59 | |
72 | |
60 | #if CORO_SJLJ |
73 | # if CORO_SJLJ |
61 | # include <stdio.h> |
74 | # include <stdio.h> |
62 | # include <signal.h> |
75 | # include <signal.h> |
63 | # include <unistd.h> |
76 | # include <unistd.h> |
64 | #endif |
77 | # endif |
65 | |
78 | |
66 | static volatile coro_func coro_init_func; |
79 | static coro_func coro_init_func; |
67 | static volatile void *coro_init_arg; |
80 | static void *coro_init_arg; |
68 | static volatile coro_context *new_coro, *create_coro; |
81 | static coro_context *new_coro, *create_coro; |
69 | |
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70 | /* what we really want to detect here is wether we use a new-enough version of GAS */ |
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71 | /* instead, check for gcc 3 and ELF and hope for the best */ |
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72 | #if __GNUC__ >= 3 && __ELF__ |
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73 | # define HAVE_CFI 1 |
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74 | #endif |
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75 | |
82 | |
76 | static void |
83 | static void |
77 | coro_init (void) |
84 | coro_init (void) |
78 | { |
85 | { |
79 | volatile coro_func func = coro_init_func; |
86 | volatile coro_func func = coro_init_func; |
80 | volatile void *arg = coro_init_arg; |
87 | volatile void *arg = coro_init_arg; |
81 | |
88 | |
82 | coro_transfer ((coro_context *)new_coro, (coro_context *)create_coro); |
89 | coro_transfer (new_coro, create_coro); |
83 | |
90 | |
84 | func ((void *)arg); |
91 | func ((void *)arg); |
85 | |
92 | |
86 | /* the new coro returned. bad. just abort() for now */ |
93 | /* the new coro returned. bad. just abort() for now */ |
87 | abort (); |
94 | abort (); |
88 | } |
95 | } |
89 | |
96 | |
90 | # if CORO_SJLJ |
97 | # if CORO_SJLJ |
91 | |
98 | |
92 | static volatile int trampoline_count; |
99 | static volatile int trampoline_done; |
93 | |
100 | |
94 | /* trampoline signal handler */ |
101 | /* trampoline signal handler */ |
95 | static void |
102 | static void |
96 | trampoline (int sig) |
103 | trampoline (int sig) |
97 | { |
104 | { |
98 | if (setjmp (((coro_context *)new_coro)->env)) |
105 | if (coro_setjmp (new_coro->env)) |
99 | { |
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100 | #if HAVE_CFI |
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101 | asm (".cfi_startproc"); |
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102 | #endif |
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103 | coro_init (); /* start it */ |
106 | coro_init (); /* start it */ |
104 | #if HAVE_CFI |
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105 | asm (".cfi_endproc"); |
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106 | #endif |
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107 | } |
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108 | else |
107 | else |
109 | trampoline_count++; |
108 | trampoline_done = 1; |
110 | } |
109 | } |
111 | |
110 | |
112 | # endif |
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113 | |
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114 | #endif |
111 | # endif |
115 | |
112 | |
116 | /* initialize a machine state */ |
113 | # if CORO_ASM |
117 | void coro_create (coro_context *ctx, |
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118 | coro_func coro, void *arg, |
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119 | void *sptr, long ssize) |
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120 | { |
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121 | #if CORO_UCONTEXT |
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122 | |
114 | |
123 | getcontext (&(ctx->uc)); |
115 | asm ( |
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116 | ".text\n" |
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117 | ".globl coro_transfer\n" |
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118 | ".type coro_transfer, @function\n" |
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119 | "coro_transfer:\n" |
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120 | #if __amd64 |
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121 | #if CORO_WIN_TIB |
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122 | #define NUM_SAVED 6+3 |
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123 | "\tpush %fs:0x0\n" |
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124 | "\tpush %fs:0x8\n" |
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125 | "\tpush %fs:0xc\n" |
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126 | #else |
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127 | #define NUM_SAVED 6 |
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128 | #endif |
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129 | "\tpush %rbp\n" |
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130 | "\tpush %rbx\n" |
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131 | "\tpush %r12\n" |
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132 | "\tpush %r13\n" |
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133 | "\tpush %r14\n" |
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134 | "\tpush %r15\n" |
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135 | "\tmov %rsp, (%rdi)\n" |
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136 | "\tmov (%rsi), %rsp\n" |
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137 | "\tpop %r15\n" |
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138 | "\tpop %r14\n" |
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139 | "\tpop %r13\n" |
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140 | "\tpop %r12\n" |
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141 | "\tpop %rbx\n" |
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142 | "\tpop %rbp\n" |
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143 | #if CORO_WIN_TIB |
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144 | "\tpop %fs:0xc\n" |
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145 | "\tpop %fs:0x8\n" |
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146 | "\tpop %fs:0x0\n" |
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147 | #endif |
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148 | #elif __i386 |
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149 | #if CORO_WIN_TIB |
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150 | #define NUM_SAVED 4+3 |
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151 | "\tpush %fs:0x0\n" |
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152 | "\tpush %fs:0x4\n" |
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153 | "\tpush %fs:0x8\n" |
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154 | #else |
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155 | #define NUM_SAVED 4 |
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156 | #endif |
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157 | "\tpush %ebp\n" |
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158 | "\tpush %ebx\n" |
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159 | "\tpush %esi\n" |
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160 | "\tpush %edi\n" |
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161 | "\tmov %esp, (%eax)\n" |
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162 | "\tmov (%edx), %esp\n" |
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163 | "\tpop %edi\n" |
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164 | "\tpop %esi\n" |
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165 | "\tpop %ebx\n" |
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166 | "\tpop %ebp\n" |
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167 | #if CORO_WIN_TIB |
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168 | "\tpop %fs:0x8\n" |
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169 | "\tpop %fs:0x4\n" |
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170 | "\tpop %fs:0x0\n" |
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171 | #endif |
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172 | #else |
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173 | #error unsupported architecture |
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174 | #endif |
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175 | "\tret\n" |
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176 | ); |
124 | |
177 | |
125 | ctx->uc.uc_link = 0; |
178 | # endif |
126 | ctx->uc.uc_stack.ss_sp = STACK_ADJUST_PTR (sptr,ssize); |
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127 | ctx->uc.uc_stack.ss_size = (size_t) STACK_ADJUST_SIZE (sptr,ssize); |
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128 | ctx->uc.uc_stack.ss_flags = 0; |
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129 | |
179 | |
130 | makecontext (&(ctx->uc), (void (*)()) coro, 1, arg); |
180 | void |
131 | |
181 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
132 | #elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX |
182 | { |
133 | |
183 | coro_context nctx; |
134 | # if CORO_SJLJ |
184 | # if CORO_SJLJ |
135 | stack_t ostk, nstk; |
185 | stack_t ostk, nstk; |
136 | struct sigaction osa, nsa; |
186 | struct sigaction osa, nsa; |
137 | sigset_t nsig, osig; |
187 | sigset_t nsig, osig; |
138 | # endif |
188 | # endif |
139 | coro_context nctx; |
189 | |
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190 | if (!coro) |
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191 | return; |
140 | |
192 | |
141 | coro_init_func = coro; |
193 | coro_init_func = coro; |
142 | coro_init_arg = arg; |
194 | coro_init_arg = arg; |
143 | |
195 | |
144 | new_coro = ctx; |
196 | new_coro = ctx; |
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170 | { |
222 | { |
171 | perror ("sigaltstack"); |
223 | perror ("sigaltstack"); |
172 | abort (); |
224 | abort (); |
173 | } |
225 | } |
174 | |
226 | |
175 | trampoline_count = 0; |
227 | trampoline_done = 0; |
176 | kill (getpid (), SIGUSR2); |
228 | kill (getpid (), SIGUSR2); |
177 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
229 | sigfillset (&nsig); sigdelset (&nsig, SIGUSR2); |
178 | |
230 | |
179 | while (!trampoline_count) |
231 | while (!trampoline_done) |
180 | sigsuspend (&nsig); |
232 | sigsuspend (&nsig); |
181 | |
233 | |
182 | sigaltstack (0, &nstk); |
234 | sigaltstack (0, &nstk); |
183 | nstk.ss_flags = SS_DISABLE; |
235 | nstk.ss_flags = SS_DISABLE; |
184 | if (sigaltstack (&nstk, 0) < 0) |
236 | if (sigaltstack (&nstk, 0) < 0) |
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190 | |
242 | |
191 | if (~ostk.ss_flags & SS_DISABLE) |
243 | if (~ostk.ss_flags & SS_DISABLE) |
192 | sigaltstack (&ostk, 0); |
244 | sigaltstack (&ostk, 0); |
193 | |
245 | |
194 | sigaction (SIGUSR2, &osa, 0); |
246 | sigaction (SIGUSR2, &osa, 0); |
195 | |
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196 | sigprocmask (SIG_SETMASK, &osig, 0); |
247 | sigprocmask (SIG_SETMASK, &osig, 0); |
197 | |
248 | |
198 | # elif CORO_LOSER |
249 | # elif CORO_LOSER |
199 | |
250 | |
200 | setjmp (ctx->env); |
251 | coro_setjmp (ctx->env); |
201 | #if __CYGWIN__ |
252 | #if __CYGWIN__ && __i386 |
202 | ctx->env[7] = (long)((char *)sptr + ssize); |
253 | ctx->env[8] = (long) coro_init; |
203 | ctx->env[8] = (long)coro_init; |
254 | ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); |
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255 | #elif __CYGWIN__ && __x86_64 |
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256 | ctx->env[7] = (long) coro_init; |
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257 | ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); |
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258 | #elif defined(__MINGW32__) |
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259 | ctx->env[5] = (long) coro_init; |
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260 | ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); |
204 | #elif defined(_M_IX86) |
261 | #elif defined(_M_IX86) |
205 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; |
262 | ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; |
206 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr,ssize); |
263 | ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
207 | #elif defined(_M_AMD64) |
264 | #elif defined(_M_AMD64) |
208 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; |
265 | ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; |
209 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr,ssize); |
266 | ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
210 | #elif defined(_M_IA64) |
267 | #elif defined(_M_IA64) |
211 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; |
268 | ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; |
212 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr,ssize); |
269 | ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); |
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270 | #else |
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271 | #error "microsoft libc or architecture not supported" |
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272 | #endif |
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273 | |
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274 | # elif CORO_LINUX |
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275 | |
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276 | coro_setjmp (ctx->env); |
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277 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
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278 | ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; |
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279 | ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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280 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
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281 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
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282 | ctx->env[0].__jmpbuf[0].__sp = (int *) ((char *)sptr + ssize) - sizeof (long); |
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283 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
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284 | ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init; |
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285 | ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); |
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286 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
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287 | ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; |
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288 | ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); |
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289 | #else |
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290 | #error "linux libc or architecture not supported" |
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291 | #endif |
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292 | |
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293 | # elif CORO_IRIX |
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294 | |
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295 | coro_setjmp (ctx->env, 0); |
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296 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
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297 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); |
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298 | |
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299 | # elif CORO_ASM |
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300 | |
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301 | ctx->sp = (void **)(ssize + (char *)sptr); |
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302 | *--ctx->sp = (void *)abort; /* needed for alignment only */ |
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303 | *--ctx->sp = (void *)coro_init; |
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304 | ctx->sp -= NUM_SAVED; |
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305 | |
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306 | # elif CORO_UCONTEXT |
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307 | |
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308 | getcontext (&(ctx->uc)); |
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309 | |
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310 | ctx->uc.uc_link = 0; |
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311 | ctx->uc.uc_stack.ss_sp = sptr; |
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312 | ctx->uc.uc_stack.ss_size = (size_t)ssize; |
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313 | ctx->uc.uc_stack.ss_flags = 0; |
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314 | |
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315 | makecontext (&(ctx->uc), (void (*)())coro_init, 0); |
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316 | |
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317 | # endif |
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318 | |
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319 | coro_transfer (create_coro, new_coro); |
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320 | } |
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321 | |
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322 | /*****************************************************************************/ |
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323 | /* pthread backend */ |
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324 | /*****************************************************************************/ |
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325 | #elif CORO_PTHREAD |
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326 | |
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327 | /* this mutex will be locked by the running coroutine */ |
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328 | pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER; |
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329 | |
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330 | struct coro_init_args |
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331 | { |
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332 | coro_func func; |
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333 | void *arg; |
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334 | coro_context *self, *main; |
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335 | }; |
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336 | |
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337 | static pthread_t null_tid; |
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338 | |
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339 | /* I'd so love to cast pthread_mutex_unlock to void (*)(void *)... */ |
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340 | static void |
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341 | mutex_unlock_wrapper (void *arg) |
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342 | { |
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343 | pthread_mutex_unlock ((pthread_mutex_t *)arg); |
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344 | } |
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345 | |
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346 | static void * |
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347 | coro_init (void *args_) |
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348 | { |
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349 | struct coro_init_args *args = (struct coro_init_args *)args_; |
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350 | coro_func func = args->func; |
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351 | void *arg = args->arg; |
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352 | |
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353 | pthread_mutex_lock (&coro_mutex); |
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354 | |
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355 | /* we try to be good citizens and use deferred cancellation and cleanup handlers */ |
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356 | pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex); |
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357 | coro_transfer (args->self, args->main); |
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358 | func (arg); |
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359 | pthread_cleanup_pop (1); |
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360 | |
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361 | return 0; |
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362 | } |
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363 | |
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364 | void |
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365 | coro_transfer (coro_context *prev, coro_context *next) |
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366 | { |
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367 | pthread_cond_signal (&next->cv); |
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368 | pthread_cond_wait (&prev->cv, &coro_mutex); |
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369 | #if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */ |
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370 | pthread_testcancel (); |
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371 | #endif |
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372 | } |
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373 | |
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374 | void |
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375 | coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, long ssize) |
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376 | { |
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377 | static coro_context nctx; |
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378 | static int once; |
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379 | |
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380 | if (!once) |
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381 | { |
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382 | once = 1; |
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383 | |
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384 | pthread_mutex_lock (&coro_mutex); |
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385 | pthread_cond_init (&nctx.cv, 0); |
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386 | null_tid = pthread_self (); |
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387 | } |
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388 | |
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389 | pthread_cond_init (&ctx->cv, 0); |
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390 | |
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391 | if (coro) |
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392 | { |
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393 | pthread_attr_t attr; |
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394 | struct coro_init_args args; |
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395 | |
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396 | args.func = coro; |
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397 | args.arg = arg; |
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398 | args.self = ctx; |
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399 | args.main = &nctx; |
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400 | |
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401 | pthread_attr_init (&attr); |
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402 | pthread_attr_setstack (&attr, sptr, (size_t)ssize); |
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403 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
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404 | pthread_create (&ctx->id, &attr, coro_init, &args); |
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405 | |
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406 | coro_transfer (args.main, args.self); |
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407 | } |
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408 | else |
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409 | ctx->id = null_tid; |
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410 | } |
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411 | |
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412 | void |
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413 | coro_destroy (coro_context *ctx) |
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414 | { |
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415 | if (!pthread_equal (ctx->id, null_tid)) |
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416 | { |
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417 | pthread_cancel (ctx->id); |
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418 | pthread_mutex_unlock (&coro_mutex); |
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419 | pthread_join (ctx->id, 0); |
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420 | pthread_mutex_lock (&coro_mutex); |
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421 | } |
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422 | |
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423 | pthread_cond_destroy (&ctx->cv); |
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424 | } |
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425 | |
213 | #else |
426 | #else |
214 | #error "microsoft libc or architecture not supported" |
427 | # error unsupported backend |
215 | #endif |
428 | #endif |
216 | |
429 | |
217 | # elif CORO_LINUX |
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218 | |
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219 | _setjmp (ctx->env); |
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220 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) |
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221 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
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222 | ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize); |
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223 | #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) |
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224 | ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; |
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225 | ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize); |
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226 | #elif defined (__GNU_LIBRARY__) && defined (__i386__) |
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227 | ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; |
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228 | ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize); |
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229 | #elif defined (__GNU_LIBRARY__) && defined (__amd64__) |
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230 | ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; |
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231 | ctx->env[0].__jmpbuf[JB_RSP] = (long)STACK_ADJUST_PTR (sptr, ssize); |
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232 | #else |
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233 | #error "linux libc or architecture not supported" |
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234 | #endif |
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235 | |
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236 | # elif CORO_IRIX |
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237 | |
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238 | setjmp (ctx->env); |
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239 | ctx->env[JB_PC] = (__uint64_t)coro_init; |
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240 | ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize); |
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241 | |
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242 | # endif |
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243 | |
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244 | coro_transfer ((coro_context *)create_coro, (coro_context *)new_coro); |
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245 | |
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246 | #else |
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247 | error unsupported architecture |
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248 | #endif |
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249 | } |
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250 | |
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