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

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

src/share/vm/jfr/recorder/storage/jfrStorageUtils.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_HPP
 #define SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_HPP
 #include "jfr/recorder/storage/jfrBuffer.hpp"
 #include "jfr/recorder/repository/jfrChunkWriter.hpp"
 #include "jfr/utilities/jfrAllocation.hpp"
 #include "jfr/utilities/jfrTypes.hpp"
 #include "runtime/thread.hpp"
 template <typename Operation, typename NextOperation>
 class CompositeOperation {
  private:
   Operation* _op;
   NextOperation* _next;
  public:
   CompositeOperation(Operation* op, NextOperation* next) : _op(op), _next(next) {
     assert(_op != NULL, "invariant");
   }
   typedef typename Operation::Type Type;
   bool process(Type* t = NULL) {
     return _next == NULL ? _op->process(t) : _op->process(t) && _next->process(t);
   }
   size_t processed() const {
     return _next == NULL ? _op->processed() : _op->processed() + _next->processed();
   }
 };
 template <typename T>
 class UnBufferedWriteToChunk {
  private:
   JfrChunkWriter& _writer;
   size_t _processed;
  public:
   typedef T Type;
   UnBufferedWriteToChunk(JfrChunkWriter& writer) : _writer(writer), _processed(0) {}
   bool write(Type* t, const u1* data, size_t size);
   size_t processed() { return _processed; }
 };
 template <typename T>
 class DefaultDiscarder {
  private:
   size_t _processed;
  public:
   typedef T Type;
   DefaultDiscarder() : _processed() {}
   bool discard(Type* t, const u1* data, size_t size);
   size_t processed() const { return _processed; }
 };
 template <typename Operation>
 class ConcurrentWriteOp {
  private:
   Operation& _operation;
  public:
   typedef typename Operation::Type Type;
   ConcurrentWriteOp(Operation& operation) : _operation(operation) {}
   bool process(Type* t);
   size_t processed() const { return _operation.processed(); }
 };
 template <typename Operation>
 class ConcurrentWriteOpExcludeRetired : private ConcurrentWriteOp<Operation> {
  public:
   typedef typename Operation::Type Type;
   ConcurrentWriteOpExcludeRetired(Operation& operation) : ConcurrentWriteOp<Operation>(operation) {}
   bool process(Type* t);
   size_t processed() const { return ConcurrentWriteOp<Operation>::processed(); }
 };
 template <typename Operation>
 class MutexedWriteOp {
  private:
   Operation& _operation;
  public:
   typedef typename Operation::Type Type;
   MutexedWriteOp(Operation& operation) : _operation(operation) {}
   bool process(Type* t);
   size_t processed() const { return _operation.processed(); }
 };
 template <typename Operation>
 class ExclusiveOp : private MutexedWriteOp<Operation> {
  public:
   typedef typename Operation::Type Type;
   ExclusiveOp(Operation& operation) : MutexedWriteOp<Operation>(operation) {}
   bool process(Type* t);
   size_t processed() const { return MutexedWriteOp<Operation>::processed(); }
 };
 enum jfr_operation_mode {
   mutexed = 1,
   concurrent
 };
 template <typename Operation>
 class DiscardOp {
  private:
   Operation _operation;
   jfr_operation_mode _mode;
  public:
   typedef typename Operation::Type Type;
   DiscardOp(jfr_operation_mode mode = concurrent) : _operation(), _mode(mode) {}
   bool process(Type* t);
   size_t processed() const { return _operation.processed(); }
 };
 #endif // SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

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

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