Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/g1/g1StringDedupThread.cpp @ 20655:b840813adfcc
8065305: Make it possible to extend the G1CollectorPolicy
Summary: Added a G1CollectorPolicyExt where it is possible to extend the class.
Reviewed-by: sjohanss, tschatzl
author | jwilhelm |
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date | Fri, 21 Nov 2014 12:08:37 +0100 |
parents | 581e70386ec9 |
children | 04a62a3d51d7 |
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/* * Copyright (c) 2014, 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 "gc_implementation/g1/g1Log.hpp" #include "gc_implementation/g1/g1StringDedup.hpp" #include "gc_implementation/g1/g1StringDedupTable.hpp" #include "gc_implementation/g1/g1StringDedupThread.hpp" #include "gc_implementation/g1/g1StringDedupQueue.hpp" G1StringDedupThread* G1StringDedupThread::_thread = NULL; G1StringDedupThread::G1StringDedupThread() : ConcurrentGCThread() { set_name("String Deduplication Thread"); create_and_start(); } G1StringDedupThread::~G1StringDedupThread() { ShouldNotReachHere(); } void G1StringDedupThread::create() { assert(G1StringDedup::is_enabled(), "String deduplication not enabled"); assert(_thread == NULL, "One string deduplication thread allowed"); _thread = new G1StringDedupThread(); } G1StringDedupThread* G1StringDedupThread::thread() { assert(G1StringDedup::is_enabled(), "String deduplication not enabled"); assert(_thread != NULL, "String deduplication thread not created"); return _thread; } void G1StringDedupThread::print_on(outputStream* st) const { st->print("\"%s\" ", name()); Thread::print_on(st); st->cr(); } void G1StringDedupThread::run() { G1StringDedupStat total_stat; initialize_in_thread(); wait_for_universe_init(); // Main loop for (;;) { G1StringDedupStat stat; stat.mark_idle(); // Wait for the queue to become non-empty G1StringDedupQueue::wait(); if (_should_terminate) { break; } { // Include thread in safepoints SuspendibleThreadSetJoiner sts; stat.mark_exec(); // Process the queue for (;;) { oop java_string = G1StringDedupQueue::pop(); if (java_string == NULL) { break; } G1StringDedupTable::deduplicate(java_string, stat); // Safepoint this thread if needed if (sts.should_yield()) { stat.mark_block(); sts.yield(); stat.mark_unblock(); } } G1StringDedupTable::trim_entry_cache(); stat.mark_done(); // Print statistics total_stat.add(stat); print(gclog_or_tty, stat, total_stat); } } terminate(); } void G1StringDedupThread::stop() { { MonitorLockerEx ml(Terminator_lock); _thread->_should_terminate = true; } G1StringDedupQueue::cancel_wait(); { MonitorLockerEx ml(Terminator_lock); while (!_thread->_has_terminated) { ml.wait(); } } } void G1StringDedupThread::print(outputStream* st, const G1StringDedupStat& last_stat, const G1StringDedupStat& total_stat) { if (G1Log::fine() || PrintStringDeduplicationStatistics) { G1StringDedupStat::print_summary(st, last_stat, total_stat); if (PrintStringDeduplicationStatistics) { G1StringDedupStat::print_statistics(st, last_stat, false); G1StringDedupStat::print_statistics(st, total_stat, true); G1StringDedupTable::print_statistics(st); G1StringDedupQueue::print_statistics(st); } } }