Mercurial > hg > Members > kaito > longjump
annotate pointer_longjump.c @ 3:e6aa3b678e4a
remove ret from global_longjump.c
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
---|---|
date | Tue, 12 Nov 2013 15:22:04 +0900 |
parents | 76cd6ae48a1b |
children | d75a89b10176 |
rev | line source |
---|---|
0 | 1 #include <stdio.h> |
2 #include <setjmp.h> | |
3 #include <stdlib.h> | |
4 | |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
5 __code code1(int n,void *__return,void *__enviroment,int *__ret_p){ |
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
6 void(*ret)(int,void *,int *); |
0 | 7 printf("code1\n"); |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
8 ret = (void(*)(int,void *,int *))__return; |
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
9 ret(n,__enviroment,__ret_p); |
3
e6aa3b678e4a
remove ret from global_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
2
diff
changeset
|
10 //((void(*)(int,void *,int *))__return)(n,__enviroment,__ret_p); |
0 | 11 } |
12 | |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
13 void *return1 (int n,void* env,int* __ret_p){ |
0 | 14 printf("return1\n"); |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
15 *__ret_p = n; |
0 | 16 longjmp(*(jmp_buf*)env,1); |
17 } | |
18 | |
19 int main1 (){ | |
20 void *__return; | |
21 void *__enviroment; | |
3
e6aa3b678e4a
remove ret from global_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
2
diff
changeset
|
22 int *__ret_p; |
0 | 23 printf("main1 entry\n"); |
24 __enviroment = (void*)malloc(sizeof(jmp_buf)); | |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
25 __ret_p = (int*)malloc(sizeof(int)); |
0 | 26 if (setjmp(__enviroment)){ |
27 free(__enviroment); | |
28 printf("main1 return\n"); | |
2
76cd6ae48a1b
add comment for malloc-free
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
1
diff
changeset
|
29 // We haven't freed __ret_p's memory... Where is the best position of the free()? |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
30 return *__ret_p; |
0 | 31 } |
32 __return = (void*)return1; | |
1
6d11ed2a5bed
write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
33 goto code1(30,__return,__enviroment,__ret_p); |
0 | 34 return 0; |
35 } | |
36 | |
37 int main (){ | |
38 int n; | |
39 n = main1(); | |
40 printf("returned\n"); | |
41 printf("return = %d\n",n); | |
42 return 1; | |
43 } |