| /* |
| * Copyright (c) 2017, 2018, 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. |
| * |
| */ |
| |
| #ifndef SHARE_VM_RUNTIME_THREADSMR_INLINE_HPP |
| #define SHARE_VM_RUNTIME_THREADSMR_INLINE_HPP |
| |
| #include "runtime/atomic.hpp" |
| #include "memory/iterator.hpp" |
| #include "runtime/prefetch.inline.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/threadSMR.hpp" |
| |
| // Devirtualize known thread closure types. |
| template <class T> |
| inline void ThreadsList::threads_do_dispatch(T *cl, JavaThread *const thread) const { |
| cl->T::do_thread(thread); |
| } |
| |
| template <> |
| inline void ThreadsList::threads_do_dispatch<ThreadClosure>(ThreadClosure *cl, JavaThread *const thread) const { |
| cl->do_thread(thread); |
| } |
| |
| template <class T> |
| inline void ThreadsList::threads_do(T *cl) const { |
| const intx scan_interval = PrefetchScanIntervalInBytes; |
| JavaThread *const *const end = _threads + _length; |
| for (JavaThread *const *current_p = _threads; current_p != end; current_p++) { |
| Prefetch::read((void*)current_p, scan_interval); |
| JavaThread *const current = *current_p; |
| threads_do_dispatch(cl, current); |
| } |
| } |
| |
| // These three inlines are private to ThreadsSMRSupport, but |
| // they are called by public inline update_tlh_stats() below: |
| |
| inline void ThreadsSMRSupport::add_tlh_times(uint add_value) { |
| Atomic::add(add_value, &_tlh_times); |
| } |
| |
| inline void ThreadsSMRSupport::inc_tlh_cnt() { |
| Atomic::inc(&_tlh_cnt); |
| } |
| |
| inline void ThreadsSMRSupport::update_tlh_time_max(uint new_value) { |
| while (true) { |
| uint cur_value = _tlh_time_max; |
| if (new_value <= cur_value) { |
| // No need to update max value so we're done. |
| break; |
| } |
| if (Atomic::cmpxchg(new_value, &_tlh_time_max, cur_value) == cur_value) { |
| // Updated max value so we're done. Otherwise try it all again. |
| break; |
| } |
| } |
| } |
| |
| inline ThreadsList* ThreadsSMRSupport::get_java_thread_list() { |
| return (ThreadsList*)OrderAccess::load_acquire(&_java_thread_list); |
| } |
| |
| inline bool ThreadsSMRSupport::is_a_protected_JavaThread_with_lock(JavaThread *thread) { |
| MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock); |
| return is_a_protected_JavaThread(thread); |
| } |
| |
| inline void ThreadsSMRSupport::update_tlh_stats(uint millis) { |
| ThreadsSMRSupport::inc_tlh_cnt(); |
| ThreadsSMRSupport::add_tlh_times(millis); |
| ThreadsSMRSupport::update_tlh_time_max(millis); |
| } |
| |
| #endif // SHARE_VM_RUNTIME_THREADSMR_INLINE_HPP |