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8008962: NPG: Memory regression: One extra Monitor per ConstantPool

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Re-use InstanceKlass::_init_lock locking ConstantPool as well.

Reviewed-by: dholmes, coleenp, acorn
This commit is contained in:
Ioi Lam 2013-04-25 12:55:49 -07:00
parent 333cf9a756
commit 4e19360f89
7 changed files with 61 additions and 51 deletions
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3
hotspot/src/share/vm/ci/ciEnv.cpp
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@ -483,7 +483,8 @@ ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
{
// We have to lock the cpool to keep the oop from being resolved
// while we are accessing it.
MonitorLockerEx ml(cpool->lock());
oop cplock = cpool->lock();
ObjectLocker ol(cplock, THREAD, cplock != NULL);
constantTag tag = cpool->tag_at(index);
if (tag.is_klass()) {
// The klass has been inserted into the constant pool