[Mono-bugs] [Bug 81685][Wis] Changed - Stack Overflow detection

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Changed by vargaz at gmail.com.

http://bugzilla.ximian.com/show_bug.cgi?id=81685

--- shadow/81685	2007-05-19 13:26:07.000000000 -0400
+++ shadow/81685.tmp.17597	2007-05-20 08:55:05.000000000 -0400
@@ -1,14 +1,14 @@
 Bug#: 81685
 Product: Mono: Runtime
 Version: 1.2
-OS: 
+OS: unknown
 OS Details: 
 Status: NEW   
 Resolution: 
-Severity: 
+Severity: Unknown
 Priority: Wishlist
 Component: JIT
 AssignedTo: lupus at ximian.com                            
 ReportedBy: miguel at ximian.com               
 QAContact: mono-bugs at ximian.com
 TargetMilestone: ---
@@ -25,6 +25,17 @@
 sigaltstack stack with the GC is a possibility, but would slow down the GC
 as a big blog of mostly unused memory would be registered.
 
 The open sourced Java VM does not seem to be using sigaltstack to detect
 this case, they seem to use another setup to detect overflows, it might be
 worth investigating this.
+
+------- Additional Comments From vargaz at gmail.com  2007-05-20 08:55 -------
+According to this:
+
+http://java.sun.com/javase/6/webnotes/trouble/TSG-VM/html/crashes.html
+
+HotSpot does this by adding checks to compiled java code, most likely
+by touching a memory location a couple of pages down the stack in the
+method prolog. This could work for us, but it would slow down every
+method call + localloc.
+