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7107135: Stack guard pages are no more protected after loading a shared library with executable stack

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Detect the execstack attribute of the loaded library and attempt to fix the stack guard using Safepoint op.

Reviewed-by: dholmes, zgu
This commit is contained in:
Ioi Lam 2013-03-05 13:55:56 -08:00 • committed by Ioi Lam
parent 112317dbe3
commit 5116181e1f
13 changed files with 464 additions and 3 deletions
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7
hotspot/src/share/vm/runtime/thread.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -1289,6 +1289,7 @@ class JavaThread: public Thread {
void enable_stack_red_zone();
void disable_stack_red_zone();
inline bool stack_guard_zone_unused();
inline bool stack_yellow_zone_disabled();
inline bool stack_yellow_zone_enabled();
@ -1759,6 +1760,10 @@ inline CompilerThread* JavaThread::as_CompilerThread() {
return (CompilerThread*)this;
}
inline bool JavaThread::stack_guard_zone_unused() {
return _stack_guard_state == stack_guard_unused;
}
inline bool JavaThread::stack_yellow_zone_disabled() {
return _stack_guard_state == stack_guard_yellow_disabled;
}