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gc.h: IS_STACK_DIR_UPPER

* 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
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1 parent 068dafd commit 8706c00dfd65ae6c78f6fdac3688b224925c8d49 @nobu nobu committed Jun 10, 2012
Showing with 5 additions and 2 deletions.
  1. +3 −1 ChangeLog
  2. +1 −0 gc.h
  3. +1 −1 thread_pthread.c
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4 ChangeLog
@@ -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.
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1 gc.h
@@ -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)
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2 thread_pthread.c
@@ -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;
}

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