Mercurial > hg > truffle
diff src/share/vm/runtime/biasedLocking.cpp @ 84:6e085831cad7
6692235: Fix for 6666698 broke -XX:BiasedLockingStartupDelay=0
Summary: Stack allocated VM_EnableBiasedLocking op must be marked as such
Reviewed-by: xlu, acorn, never, dholmes
author | sbohne |
---|---|
date | Thu, 10 Apr 2008 15:49:29 -0400 |
parents | 7ee622712fcf |
children | d1605aabd0a1 |
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--- a/src/share/vm/runtime/biasedLocking.cpp Tue Apr 01 16:14:18 2008 -0700 +++ b/src/share/vm/runtime/biasedLocking.cpp Thu Apr 10 15:49:29 2008 -0400 @@ -1,4 +1,3 @@ - /* * Copyright 2005-2007 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -37,11 +36,13 @@ } class VM_EnableBiasedLocking: public VM_Operation { + private: + bool _is_cheap_allocated; public: - VM_EnableBiasedLocking() {} + VM_EnableBiasedLocking(bool is_cheap_allocated) { _is_cheap_allocated = is_cheap_allocated; } VMOp_Type type() const { return VMOp_EnableBiasedLocking; } - Mode evaluation_mode() const { return _async_safepoint; } - bool is_cheap_allocated() const { return true; } + Mode evaluation_mode() const { return _is_cheap_allocated ? _async_safepoint : _safepoint; } + bool is_cheap_allocated() const { return _is_cheap_allocated; } void doit() { // Iterate the system dictionary enabling biased locking for all @@ -67,7 +68,7 @@ virtual void task() { // Use async VM operation to avoid blocking the Watcher thread. // VM Thread will free C heap storage. - VM_EnableBiasedLocking *op = new VM_EnableBiasedLocking(); + VM_EnableBiasedLocking *op = new VM_EnableBiasedLocking(true); VMThread::execute(op); // Reclaim our storage and disenroll ourself @@ -89,7 +90,7 @@ EnableBiasedLockingTask* task = new EnableBiasedLockingTask(BiasedLockingStartupDelay); task->enroll(); } else { - VM_EnableBiasedLocking op; + VM_EnableBiasedLocking op(false); VMThread::execute(&op); } }