kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

gc.h: IS_STACK_DIR_UPPER

Browse source 
* gc.h (IS_STACK_DIR_UPPER): utility macro.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36015 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2012-06-10 08:54:38 +00:00
parent 068dafd21f
commit 8706c00dfd
3 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
ChangeLog
View file

@ -1,4 +1,6 @@
Sun Jun 10 17:54:31 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
Sun Jun 10 17:54:36 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
* gc.h (IS_STACK_DIR_UPPER): utility macro.
* thread_pthread.c (get_stack): seems stack size does not include
guard size on Mac OS X.

1
gc.h
View file

@ -81,6 +81,7 @@ int ruby_get_stack_grow_direction(volatile VALUE *addr);
#define STACK_GROW_DIR_DETECTION VALUE stack_grow_dir_detection
#define STACK_DIR_UPPER(a,b) STACK_UPPER(&stack_grow_dir_detection, (a), (b))
#endif
#define IS_STACK_DIR_UPPER() STACK_DIR_UPPER(1,0)
#if defined __GNUC__ && __GNUC__ >= 4
#pragma GCC visibility push(default)

2
thread_pthread.c
View file

@ -1342,7 +1342,7 @@ ruby_stack_overflowed_p(const rb_thread_t *th, const void *addr)
}
size /= 5;
if (size > water_mark) size = water_mark;
if (STACK_DIR_UPPER(1, 0)) {
if (IS_STACK_DIR_UPPER()) {
if (size > ~(size_t)base+1) size = ~(size_t)base+1;
if (addr > base && addr <= (void *)((char *)base + size)) return 1;
}