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8038212: Method::is_valid_method() check has performance regression impact for stackwalking

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Only prune metaspace virtual spaces at safepoint so walking them is safe outside a safepoint.

Reviewed-by: mgerdin, mgronlun, hseigel, stefank
This commit is contained in:
Coleen Phillimore 2014-05-15 18:23:26 -04:00
parent cc3c656cf1
commit c336175c94
13 changed files with 84 additions and 72 deletions
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2
hotspot/src/share/vm/oops/klass.cpp
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@ -640,7 +640,7 @@ void Klass::verify_on(outputStream* st) {
// This can be expensive, but it is worth checking that this klass is actually
// in the CLD graph but not in production.
assert(ClassLoaderDataGraph::contains((address)this), "Should be");
assert(Metaspace::contains((address)this), "Should be");
guarantee(this->is_klass(),"should be klass");