mirror of
https://github.com/openjdk/jdk.git
synced 2026-02-12 03:18:37 +00:00
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2001, 2026, 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 "gc/shared/concurrentGCThread.hpp"
|
|
#include "runtime/atomic.hpp"
|
|
#include "runtime/init.hpp"
|
|
#include "runtime/jniHandles.hpp"
|
|
#include "runtime/mutexLocker.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::gc_thread)) {
|
|
os::set_priority(this, prio);
|
|
os::start_thread(this);
|
|
}
|
|
}
|
|
|
|
void ConcurrentGCThread::run() {
|
|
// Wait for initialization to complete
|
|
wait_init_completed();
|
|
|
|
run_service();
|
|
|
|
// Signal thread has terminated
|
|
MonitorLocker ml(Terminator_lock);
|
|
_has_terminated.release_store(true);
|
|
ml.notify_all();
|
|
}
|
|
|
|
void ConcurrentGCThread::stop() {
|
|
assert(!should_terminate(), "Invalid state");
|
|
assert(!has_terminated(), "Invalid state");
|
|
|
|
// Signal thread to terminate
|
|
_should_terminate.release_store_fence(true);
|
|
|
|
stop_service();
|
|
|
|
// Wait for thread to terminate
|
|
MonitorLocker ml(Terminator_lock);
|
|
while (!_has_terminated.load_relaxed()) {
|
|
ml.wait();
|
|
}
|
|
}
|
|
|
|
bool ConcurrentGCThread::should_terminate() const {
|
|
return _should_terminate.load_acquire();
|
|
}
|
|
|
|
bool ConcurrentGCThread::has_terminated() const {
|
|
return _has_terminated.load_acquire();
|
|
}
|