jdk8-mips64-public/hotspot: src/share/vm/jfr/writers/jfrStreamWriterHost.inline.hpp@db357034b763 (annotated)

src/share/vm/jfr/writers/jfrStreamWriterHost.inline.hpp@db357034b763 (annotated)

src/share/vm/jfr/writers/jfrStreamWriterHost.inline.hpp

Tue, 16 Jun 2020 11:03:04 +0800

author: bulasevich
date: Tue, 16 Jun 2020 11:03:04 +0800
changeset 9947: db357034b763
parent 9858: b985cbb00e68
permissions: -rw-r--r--

8217647: JFR: recordings on 32-bit systems unreadable
Reviewed-by: egahlin
Contributed-by: boris.ulasevich@bell-sw.com, markus.gronlund@oracle.com

 /*
  * 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_WRITERS_JFRSTREAMWRITERHOST_INLINE_HPP
 #define SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_INLINE_HPP
 #include "jfr/writers/jfrStreamWriterHost.hpp"
 #include "runtime/os.hpp"
 template <typename Adapter, typename AP>
 StreamWriterHost<Adapter, AP>::StreamWriterHost(typename Adapter::StorageType* storage, Thread* thread) :
   MemoryWriterHost<Adapter, AP>(storage, thread), _stream_pos(0), _fd(invalid_fd) {
 }
 template <typename Adapter, typename AP>
 StreamWriterHost<Adapter, AP>::StreamWriterHost(typename Adapter::StorageType* storage, size_t size) :
   MemoryWriterHost<Adapter, AP>(storage, size), _stream_pos(0), _fd(invalid_fd) {
 }
 template <typename Adapter, typename AP>
 StreamWriterHost<Adapter, AP>::StreamWriterHost(Thread* thread) :
   MemoryWriterHost<Adapter, AP>(thread), _stream_pos(0), _fd(invalid_fd) {
 }
 template <typename Adapter, typename AP>
 inline int64_t StreamWriterHost<Adapter, AP>::current_stream_position() const {
   return this->used_offset() + _stream_pos;
 }
 template <typename Adapter, typename AP>
 inline bool StreamWriterHost<Adapter, AP>::accommodate(size_t used, size_t requested) {
   if (used > 0) {
     this->flush(used);
   }
   assert(this->used_size() == 0, "invariant");
   if (this->available_size() >= requested) {
     return true;
   }
   return StorageHost<Adapter, AP>::accommodate(0, requested);
 }
 template <typename Adapter, typename AP>
 inline void StreamWriterHost<Adapter, AP>::bytes(void* dest, const void* buf, size_t len) {
   if (len > this->available_size()) {
     this->write_unbuffered(buf, len);
     return;
   }
   MemoryWriterHost<Adapter, AP>::bytes(dest, buf, len);
 }
 template <typename Adapter, typename AP>
 inline void StreamWriterHost<Adapter, AP>::flush(size_t size) {
   assert(size > 0, "invariant");
   assert(this->is_valid(), "invariant");
   _stream_pos += os::write(_fd, this->start_pos(), (unsigned int)size);
   StorageHost<Adapter, AP>::reset();
   assert(0 == this->used_offset(), "invariant");
 }
 template <typename Adapter, typename AP>
 inline bool StreamWriterHost<Adapter, AP>::has_valid_fd() const {
   return invalid_fd != _fd;
 }
 template <typename Adapter, typename AP>
 inline int64_t StreamWriterHost<Adapter, AP>::current_offset() const {
   return current_stream_position();
 }
 template <typename Adapter, typename AP>
 void StreamWriterHost<Adapter, AP>::seek(int64_t offset) {
   this->flush();
   assert(0 == this->used_offset(), "can only seek from beginning");
   _stream_pos = os::seek_to_file_offset(_fd, offset);
 }
 template <typename Adapter, typename AP>
 void StreamWriterHost<Adapter, AP>::flush() {
   if (this->is_valid()) {
     const size_t used = this->used_size();
     if (used > 0) {
       this->flush(used);
     }
   }
 }
 template <typename Adapter, typename AP>
 void StreamWriterHost<Adapter, AP>::write_unbuffered(const void* buf, size_t len) {
   this->flush();
   assert(0 == this->used_offset(), "can only seek from beginning");
   while (len > 0) {
     const unsigned int n = MIN2((unsigned int)len, (unsigned int)INT_MAX);
     _stream_pos += os::write(_fd, buf, n);
     len -= n;
   }
 }
 template <typename Adapter, typename AP>
 inline bool StreamWriterHost<Adapter, AP>::is_valid() const {
   return has_valid_fd();
 }
 template <typename Adapter, typename AP>
 inline void StreamWriterHost<Adapter, AP>::close_fd() {
   assert(this->has_valid_fd(), "closing invalid fd!");
   os::close(_fd);
   _fd = invalid_fd;
 }
 template <typename Adapter, typename AP>
 inline void StreamWriterHost<Adapter, AP>::reset(fio_fd fd) {
   assert(!this->has_valid_fd(), "invariant");
   _fd = fd;
   _stream_pos = 0;
   this->hard_reset();
 }
 #endif // SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/jfr/writers/jfrStreamWriterHost.inline.hpp@db357034b763 (annotated)

src/share/vm/jfr/writers/jfrStreamWriterHost.inline.hpp