archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 14:54:52 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8232788: Move biased locking initalization

Browse source 
Reviewed-by: pchilanomate, dholmes
This commit is contained in:
Coleen Phillimore 2019-10-24 08:52:33 -04:00
parent 31ab60e211
commit 9308d18580
3 changed files with 18 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

12
src/hotspot/share/oops/instanceKlass.cpp
View file

@ -69,6 +69,7 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodComparator.hpp"
#include "runtime/atomic.hpp"
#include "runtime/biasedLocking.hpp"
#include "runtime/fieldDescriptor.inline.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/javaCalls.hpp"
@ -456,6 +457,12 @@ InstanceKlass::InstanceKlass(const ClassFileParser& parser, unsigned kind, Klass
if (Arguments::is_dumping_archive()) {
SystemDictionaryShared::init_dumptime_info(this);
}
// Set biased locking bit for all instances of this class; it will be
// cleared if revocation occurs too often for this type
if (UseBiasedLocking && BiasedLocking::enabled()) {
set_prototype_header(markWord::biased_locking_prototype());
}
}
void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data,
@ -2408,6 +2415,11 @@ void InstanceKlass::restore_unshareable_info(ClassLoaderData* loader_data, Handl
// --> see ArrayKlass::complete_create_array_klass()
array_klasses()->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK);
}
// Initialize current biased locking state.
if (UseBiasedLocking && BiasedLocking::enabled()) {
set_prototype_header(markWord::biased_locking_prototype());
}
}
// returns true IFF is_in_error_state() has been changed as a result of this call.