From: nobu.nakada@...
Date: 2001-05-15T20:16:54+09:00
Subject: [ruby-dev:13201] Re: rb_gc_stack_start

なかだです。

  configure.in の方もおかしくて常に __libc_stack_end が有効になっ
てたり、gc.c で windows.h も include しなきゃならなかったりした
のでもう一度だけ全部出し直します。



Index: configure.in
===================================================================
RCS file: /cvs/ruby/src/ruby/configure.in,v
retrieving revision 1.88
diff -u -2 -p -r1.88 configure.in
--- configure.in	2001/05/11 05:24:54	1.88
+++ configure.in	2001/05/11 10:01:11
@@ -288,4 +288,16 @@ LIBOBJS="$save_LIBOBJS"
 AC_STRUCT_ST_RDEV
 
+AC_CACHE_CHECK(for stack end address, rb_cv_stack_end_address,
+[rb_cv_stack_end_address=no
+for addr in __libc_stack_end _SEND; do
+  AC_TRY_LINK(
+    [extern void *$addr;],
+    [if (!$addr) return 1;],
+    [rb_cv_stack_end_address="$addr"; break])
+done])
+if test $rb_cv_stack_end_address != no; then
+  AC_DEFINE_UNQUOTED(STACK_END_ADDRESS, $rb_cv_stack_end_address)
+fi
+
 dnl Checks for library functions.
 AC_TYPE_GETGROUPS
Index: gc.c
===================================================================
RCS file: /cvs/ruby/src/ruby/gc.c,v
retrieving revision 1.67
diff -u -2 -p -r1.67 gc.c
--- gc.c	2001/05/07 09:26:24	1.67
+++ gc.c	2001/05/15 10:25:26
@@ -21,4 +21,7 @@
 #include <stdio.h>
 #include <setjmp.h>
+#ifdef _WIN32
+#include <windows.h>
+#endif
 
 void re_free_registers _((struct re_registers*));
@@ -1017,7 +1020,13 @@ Init_stack(addr)
     VALUE *addr;
 {
-#if defined(__human68k__)
-    extern void *_SEND;
-    rb_gc_stack_start = _SEND;
+#if defined(_WIN32)
+    MEMORY_BASIC_INFORMATION m;
+    memset(&m, 0, sizeof(m));
+    VirtualQuery(&m, &m, sizeof(m));
+    /* assume stack growing downward */
+    rb_gc_stack_start = (VALUE *)((char *)m.BaseAddress + m.RegionSize) - 1;
+#elif defined(STACK_END_ADDRESS)
+    extern void *STACK_END_ADDRESS;
+    rb_gc_stack_start = STACK_END_ADDRESS;
 #elif defined(__GNUC__) && defined(USE_BUILTIN_FRAME_ADDRESS)
     rb_gc_stack_start = __builtin_frame_address(2);


-- 
--- 僕の前にBugはない。
--- 僕の後ろにBugはできる。
    中田 伸悦