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6902182: 4/4 Starting with jdwp agent should not incur performance penalty

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Rename can_post_exceptions support to can_post_on_exceptions. Add support for should_post_on_exceptions flag to permit per JavaThread optimizations.

Reviewed-by: never, kvn, dcubed
This commit is contained in:
Tom Deneau 2010-02-01 17:35:05 -07:00 • committed by Daniel D. Daugherty
parent 679f958f72
commit f23b68b367
19 changed files with 111 additions and 52 deletions
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7
hotspot/src/share/vm/opto/graphKit.hpp
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@ -1,5 +1,5 @@
/*
* Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2001-2010 Sun Microsystems, Inc. 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
@ -251,6 +251,11 @@ class GraphKit : public Phase {
// via an uncommon trap.
void builtin_throw(Deoptimization::DeoptReason reason, Node* arg = NULL);
// Helper to check the JavaThread::_should_post_on_exceptions flag
// and branch to an uncommon_trap if it is true (with the specified reason and must_throw)
void uncommon_trap_if_should_post_on_exceptions(Deoptimization::DeoptReason reason,
bool must_throw) ;
// Helper Functions for adding debug information
void kill_dead_locals();
#ifdef ASSERT