fde89a34d0
InterfaceSupport.hpp is an inline file so moved to interfaceSupport.inline.hpp and stopped including it in .hpp files Reviewed-by: stefank, rehn, kvn
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
#include "classfile/systemDictionary.hpp"
|
|
#include "gc/shared/concurrentGCThread.hpp"
|
|
#include "oops/instanceRefKlass.hpp"
|
|
#include "oops/oop.inline.hpp"
|
|
#include "runtime/init.hpp"
|
|
#include "runtime/java.hpp"
|
|
#include "runtime/javaCalls.hpp"
|
|
#include "runtime/os.hpp"
|
|
|
|
ConcurrentGCThread::ConcurrentGCThread() :
|
|
_should_terminate(false), _has_terminated(false) {
|
|
};
|
|
|
|
void ConcurrentGCThread::create_and_start(ThreadPriority prio) {
|
|
if (os::create_thread(this, os::cgc_thread)) {
|
|
// XXX: need to set this to low priority
|
|
// unless "aggressive mode" set; priority
|
|
// should be just less than that of VMThread.
|
|
os::set_priority(this, prio);
|
|
if (!_should_terminate) {
|
|
os::start_thread(this);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ConcurrentGCThread::initialize_in_thread() {
|
|
this->record_stack_base_and_size();
|
|
this->initialize_named_thread();
|
|
this->set_active_handles(JNIHandleBlock::allocate_block());
|
|
// From this time Thread::current() should be working.
|
|
assert(this == Thread::current(), "just checking");
|
|
}
|
|
|
|
void ConcurrentGCThread::wait_for_universe_init() {
|
|
MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag);
|
|
while (!is_init_completed() && !_should_terminate) {
|
|
CGC_lock->wait(Mutex::_no_safepoint_check_flag, 1);
|
|
}
|
|
}
|
|
|
|
void ConcurrentGCThread::terminate() {
|
|
assert(_should_terminate, "Should only be called on terminate request.");
|
|
// Signal that it is terminated
|
|
{
|
|
MutexLockerEx mu(Terminator_lock,
|
|
Mutex::_no_safepoint_check_flag);
|
|
_has_terminated = true;
|
|
Terminator_lock->notify();
|
|
}
|
|
}
|
|
|
|
void ConcurrentGCThread::run() {
|
|
initialize_in_thread();
|
|
wait_for_universe_init();
|
|
|
|
run_service();
|
|
|
|
terminate();
|
|
}
|
|
|
|
void ConcurrentGCThread::stop() {
|
|
// it is ok to take late safepoints here, if needed
|
|
{
|
|
MutexLockerEx mu(Terminator_lock);
|
|
assert(!_has_terminated, "stop should only be called once");
|
|
assert(!_should_terminate, "stop should only be called once");
|
|
_should_terminate = true;
|
|
}
|
|
|
|
stop_service();
|
|
|
|
{
|
|
MutexLockerEx mu(Terminator_lock);
|
|
while (!_has_terminated) {
|
|
Terminator_lock->wait();
|
|
}
|
|
}
|
|
}
|