Mercurial > hg > Members > kaito > longjump

annotate global_longjump.c @ 7:c49bf9e28ea8

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remove jmp_buf (replaced by integer array)
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 01 Dec 2013 14:59:18 +0900
parents 4e7858590985
children
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4e7858590985 remove malloc , free and include<stdlib.h>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
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1 /*
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2 please use pointer version. that is spuerior to this.
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3 */
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4
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5
0
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6 #include <stdio.h>
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7 #include <setjmp.h>
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8 #include <stdlib.h>
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9
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10 int retval;
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d75a89b10176 write pointer_longjump.c
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d75a89b10176 write pointer_longjump.c
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12 __code code1(int n,__code(*__return)(int,void *),void *__environment){
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13 printf("code1 : code1 entry\n");
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14 goto __return(n,__environment);
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15 }
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17 __code return1 (int n,void* env){
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18 printf("return1 : __return entry\n");
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19 retval = n;
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20 longjmp(*(jmp_buf*)env,1);
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21 }
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22
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23 int main1 (){
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24 __code (*__return)();
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25 void *__environment;
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26 printf("main1 : main1 entry\n");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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27 __environment = (void*)malloc(sizeof(jmp_buf));
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 if (setjmp(__environment)){
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29 free(__environment);
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30 printf("main1 : main1 return\n");
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31 return retval;
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32 }
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33 __return = return1;
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d75a89b10176 write pointer_longjump.c
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34 goto code1(30,__return,__environment);
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35 return 0;
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36 }
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37
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38 int main (){
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39 int n;
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40 n = main1();
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41 printf("main : return = %d\n",n);
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42 return 1;
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43 }