From 99c9cc6194f5dae32bca4f8146a94520542104f7 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 14 Jun 2008 02:59:19 +0000
Subject: * gc.h (STACK_UPPER): moved from gc.c

* thread.c, thread_{pthread,win32}.c (ruby_init_stack,
  ruby_thread_init_stack): moved stack initialization from gc.c.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@17155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 gc.h | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'gc.h')

diff --git a/gc.h b/gc.h
index fe2e07ded..29fd6b407 100644
--- a/gc.h
+++ b/gc.h
@@ -57,5 +57,19 @@ rb_gc_debug_body(char *mode, char *msg, int st, void *ptr)
 
 #define RUBY_MARK_UNLESS_NULL(ptr) if(RTEST(ptr)){rb_gc_mark(ptr);}
 #define RUBY_FREE_UNLESS_NULL(ptr) if(ptr){ruby_xfree(ptr);}
-#endif /* RUBY_GC_H */
 
+#if STACK_GROW_DIRECTION > 0
+# define STACK_UPPER(x, a, b) a
+#elif STACK_GROW_DIRECTION < 0
+# define STACK_UPPER(x, a, b) b
+#else
+RUBY_EXTERN int ruby_stack_grow_direction;
+int ruby_get_stack_grow_direction(VALUE *addr);
+# define stack_growup_p(x) (			\
+	(ruby_stack_grow_direction ?		\
+	 ruby_stack_grow_direction :		\
+	 ruby_get_stack_grow_direction(x)) > 0)
+# define STACK_UPPER(x, a, b) (stack_growup_p(x) ? a : b)
+#endif
+
+#endif /* RUBY_GC_H */
-- 
cgit