src/share/vm/code/nmethod.cpp
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*** old/src/share/vm/code/nmethod.cpp Tue Feb 25 14:00:58 2014
--- new/src/share/vm/code/nmethod.cpp Tue Feb 25 14:00:58 2014
*** 2166,2194 ****
--- 2166,2190 ----
ResourceMark rm;
// Turn off dependency tracing while actually testing dependencies.
NOT_PRODUCT( FlagSetting fs(TraceDependencies, false) );
// 'dep_signature_buffers' caches already checked dependencies.
DependencySignatureBuffer dep_signature_buffers;
+ GenericHashtable<DependencySignature, ResourceObj>* table = new GenericHashtable<DependencySignature, ResourceObj>(11027);
// Iterate over live nmethods and check dependencies of all nmethods that are not
// marked for deoptimization. A particular dependency is only checked once.
for(nmethod* nm = CodeCache::alive_nmethod(CodeCache::first()); nm != NULL; nm = CodeCache::alive_nmethod(CodeCache::next(nm))) {
if (!nm->is_marked_for_deoptimization()) {
for (Dependencies::DepStream deps(nm); deps.next(); ) {
// Construct abstraction of a dependency.
- const DependencySignature* current_sig = new DependencySignature(deps);
! // Determine if 'deps' is already checked. If it is not checked,
// 'add_if_missing()' adds the dependency signature and returns
// false.
if (!dep_signature_buffers.add_if_missing(*current_sig)) {
! // Determine if 'deps' is already checked. table->add() returns
+ // 'true' if the dependency was added (i.e., was not in the hashtable).
+ if (table->add(current_sig)) {
if (deps.check_dependency() != NULL) {
// Dependency checking failed. Print out information about the failed
// dependency and finally fail with an assert. We can fail here, since
// dependency checking is never done in a product build.
ResourceMark rm;
changes.print();
nm->print();
nm->print_dependencies();
assert(false, "Should have been marked for deoptimization");
}
src/share/vm/code/nmethod.cpp
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