jdk8-mips64-public/hotspot: src/share/vm/jfr/recorder/storage/jfrStorageUtils.inline.hpp@d2c2cd90513e (annotated)

src/share/vm/jfr/recorder/storage/jfrStorageUtils.inline.hpp@d2c2cd90513e (annotated)

src/share/vm/jfr/recorder/storage/jfrStorageUtils.inline.hpp

Wed, 17 Jun 2020 11:43:05 +0300

author: apetushkov
date: Wed, 17 Jun 2020 11:43:05 +0300
changeset 9928: d2c2cd90513e
parent 9858: b985cbb00e68
permissions: -rw-r--r--

8220293: Deadlock in JFR string pool
Reviewed-by: rehn, egahlin

 /*
  * Copyright (c) 2016, 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_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP
 #define SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP
 #include "jfr/recorder/storage/jfrStorageUtils.hpp"
 #include "runtime/thread.inline.hpp"
 template <typename T>
 inline bool UnBufferedWriteToChunk<T>::write(T* t, const u1* data, size_t size) {
   _writer.write_unbuffered(data, size);
   _processed += size;
   return true;
 }
 template <typename T>
 inline bool DefaultDiscarder<T>::discard(T* t, const u1* data, size_t size) {
   _processed += size;
   return true;
 }
 template <typename Operation>
 inline bool ConcurrentWriteOp<Operation>::process(typename Operation::Type* t) {
   const u1* const current_top = t->concurrent_top();
   const size_t unflushed_size = t->pos() - current_top;
   if (unflushed_size == 0) {
     t->set_concurrent_top(current_top);
     return true;
   }
   const bool result = _operation.write(t, current_top, unflushed_size);
   t->set_concurrent_top(current_top + unflushed_size);
   return result;
 }
 template <typename Operation>
 inline bool ConcurrentWriteOpExcludeRetired<Operation>::process(typename Operation::Type* t) {
   if (t->retired()) {
     assert(t->empty(), "invariant");
     return true;
   }
   return ConcurrentWriteOp<Operation>::process(t);
 }
 template <typename Operation>
 inline bool MutexedWriteOp<Operation>::process(typename Operation::Type* t) {
   assert(t != NULL, "invariant");
   const u1* const current_top = t->top();
   const size_t unflushed_size = t->pos() - current_top;
   if (unflushed_size == 0) {
     return true;
   }
   const bool result = _operation.write(t, current_top, unflushed_size);
   t->set_top(current_top + unflushed_size);
   return result;
 }
 template <typename Type>
 static void retired_sensitive_acquire(Type* t) {
   assert(t != NULL, "invariant");
   if (t->retired()) {
     return;
   }
   Thread* const thread = Thread::current();
   while (!t->try_acquire(thread)) {
     if (t->retired()) {
       return;
     }
   }
 }
 template <typename Operation>
 inline bool ExclusiveOp<Operation>::process(typename Operation::Type* t) {
   retired_sensitive_acquire(t);
   assert(t->acquired_by_self() || t->retired(), "invariant");
   // User is required to ensure proper release of the acquisition
   return MutexedWriteOp<Operation>::process(t);
 }
 template <typename Operation>
 inline bool DiscardOp<Operation>::process(typename Operation::Type* t) {
   assert(t != NULL, "invariant");
   const u1* const current_top = _mode == concurrent ? t->concurrent_top() : t->top();
   const size_t unflushed_size = t->pos() - current_top;
   if (unflushed_size == 0) {
     if (_mode == concurrent) {
       t->set_concurrent_top(current_top);
     }
     return true;
   }
   const bool result = _operation.discard(t, current_top, unflushed_size);
   if (_mode == concurrent) {
     t->set_concurrent_top(current_top + unflushed_size);
   } else {
     t->set_top(current_top + unflushed_size);
   }
   return result;
 }
 #endif // SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/jfr/recorder/storage/jfrStorageUtils.inline.hpp@d2c2cd90513e (annotated)

src/share/vm/jfr/recorder/storage/jfrStorageUtils.inline.hpp