apetushkov@9858: /*
apetushkov@9858:  * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
apetushkov@9858:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
apetushkov@9858:  *
apetushkov@9858:  * This code is free software; you can redistribute it and/or modify it
apetushkov@9858:  * under the terms of the GNU General Public License version 2 only, as
apetushkov@9858:  * published by the Free Software Foundation.
apetushkov@9858:  *
apetushkov@9858:  * This code is distributed in the hope that it will be useful, but WITHOUT
apetushkov@9858:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
apetushkov@9858:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
apetushkov@9858:  * version 2 for more details (a copy is included in the LICENSE file that
apetushkov@9858:  * accompanied this code).
apetushkov@9858:  *
apetushkov@9858:  * You should have received a copy of the GNU General Public License version
apetushkov@9858:  * 2 along with this work; if not, write to the Free Software Foundation,
apetushkov@9858:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
apetushkov@9858:  *
apetushkov@9858:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
apetushkov@9858:  * or visit www.oracle.com if you need additional information or have any
apetushkov@9858:  * questions.
apetushkov@9858:  *
apetushkov@9858:  */
apetushkov@9858: 
apetushkov@9858: #include "precompiled.hpp"
apetushkov@9858: #include "jfr/recorder/repository/jfrChunkState.hpp"
apetushkov@9858: #include "jfr/recorder/repository/jfrChunkWriter.hpp"
apetushkov@9858: #include "jfr/recorder/service/jfrOptionSet.hpp"
apetushkov@9858: #include "jfr/utilities/jfrTime.hpp"
apetushkov@9858: #include "jfr/utilities/jfrTypes.hpp"
apetushkov@9858: #include "runtime/mutexLocker.hpp"
apetushkov@9858: #include "runtime/os.hpp"
apetushkov@9858: #include "runtime/os.hpp"
apetushkov@9858: 
bulasevich@9947: static const u2 JFR_VERSION_MAJOR = 2;
bulasevich@9947: static const u2 JFR_VERSION_MINOR = 0;
apetushkov@9858: static const size_t MAGIC_LEN = 4;
apetushkov@9858: static const size_t FILEHEADER_SLOT_SIZE = 8;
apetushkov@9858: static const size_t CHUNK_SIZE_OFFSET = 8;
apetushkov@9858: 
apetushkov@9858: JfrChunkWriter::JfrChunkWriter() : JfrChunkWriterBase(NULL), _chunkstate(NULL) {}
apetushkov@9858: 
apetushkov@9858: bool JfrChunkWriter::initialize() {
apetushkov@9858:   assert(_chunkstate == NULL, "invariant");
apetushkov@9858:   _chunkstate = new JfrChunkState();
apetushkov@9858:   return _chunkstate != NULL;
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: static fio_fd open_existing(const char* path) {
apetushkov@9858:   return os::open(path, O_RDWR, S_IREAD | S_IWRITE);
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: static fio_fd open_chunk(const char* path) {
apetushkov@9858:   assert(JfrStream_lock->owned_by_self(), "invariant");
apetushkov@9858:   return path != NULL ? open_existing(path) : invalid_fd;
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: bool JfrChunkWriter::open() {
apetushkov@9858:   assert(_chunkstate != NULL, "invariant");
apetushkov@9858:   JfrChunkWriterBase::reset(open_chunk(_chunkstate->path()));
apetushkov@9858:   const bool is_open = this->has_valid_fd();
apetushkov@9858:   if (is_open) {
apetushkov@9858:     this->bytes("FLR", MAGIC_LEN);
apetushkov@9858:     this->be_write((u2)JFR_VERSION_MAJOR);
apetushkov@9858:     this->be_write((u2)JFR_VERSION_MINOR);
apetushkov@9858:     this->reserve(6 * FILEHEADER_SLOT_SIZE);
apetushkov@9858:     // u8 chunk_size
apetushkov@9858:     // u8 initial checkpoint offset
apetushkov@9858:     // u8 metadata section offset
apetushkov@9858:     // u8 chunk start nanos
apetushkov@9858:     // u8 chunk duration nanos
apetushkov@9858:     // u8 chunk start ticks
apetushkov@9858:     this->be_write(JfrTime::frequency());
apetushkov@9858:     // chunk capabilities, CompressedIntegers etc
apetushkov@9858:     this->be_write((u4)JfrOptionSet::compressed_integers() ? 1 : 0);
apetushkov@9858:     _chunkstate->reset();
apetushkov@9858:   }
apetushkov@9858:   return is_open;
apetushkov@9858: }
apetushkov@9858: 
bulasevich@9947: size_t JfrChunkWriter::close(int64_t metadata_offset) {
apetushkov@9858:   write_header(metadata_offset);
apetushkov@9858:   this->flush();
apetushkov@9858:   this->close_fd();
bulasevich@9947:   return (size_t)size_written();
apetushkov@9858: }
apetushkov@9858: 
bulasevich@9947: void JfrChunkWriter::write_header(int64_t metadata_offset) {
apetushkov@9858:   assert(this->is_valid(), "invariant");
apetushkov@9858:   // Chunk size
apetushkov@9858:   this->write_be_at_offset((jlong)size_written(), CHUNK_SIZE_OFFSET);
apetushkov@9858:   // initial checkpoint event offset
apetushkov@9858:   this->write_be_at_offset(_chunkstate->previous_checkpoint_offset(), CHUNK_SIZE_OFFSET + (1 * FILEHEADER_SLOT_SIZE));
apetushkov@9858:   // metadata event offset
apetushkov@9858:   this->write_be_at_offset((jlong)metadata_offset, CHUNK_SIZE_OFFSET + (2 * FILEHEADER_SLOT_SIZE));
apetushkov@9858:   // start of chunk in nanos since epoch
apetushkov@9858:   this->write_be_at_offset(_chunkstate->previous_start_nanos(), CHUNK_SIZE_OFFSET + (3 * FILEHEADER_SLOT_SIZE));
apetushkov@9858:   // duration of chunk in nanos
apetushkov@9858:   this->write_be_at_offset(_chunkstate->last_chunk_duration(), CHUNK_SIZE_OFFSET + (4 * FILEHEADER_SLOT_SIZE));
apetushkov@9858:   // start of chunk in ticks
apetushkov@9858:   this->write_be_at_offset(_chunkstate->previous_start_ticks(), CHUNK_SIZE_OFFSET + (5 * FILEHEADER_SLOT_SIZE));
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: void JfrChunkWriter::set_chunk_path(const char* chunk_path) {
apetushkov@9858:   _chunkstate->set_path(chunk_path);
apetushkov@9858: }
apetushkov@9858: 
bulasevich@9947: int64_t JfrChunkWriter::size_written() const {
apetushkov@9858:   return this->is_valid() ? this->current_offset() : 0;
apetushkov@9858: }
apetushkov@9858: 
bulasevich@9947: int64_t JfrChunkWriter::previous_checkpoint_offset() const {
apetushkov@9858:   return _chunkstate->previous_checkpoint_offset();
apetushkov@9858: }
apetushkov@9858: 
bulasevich@9947: void JfrChunkWriter::set_previous_checkpoint_offset(int64_t offset) {
apetushkov@9858:   _chunkstate->set_previous_checkpoint_offset(offset);
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: void JfrChunkWriter::time_stamp_chunk_now() {
apetushkov@9858:   _chunkstate->update_time_to_now();
apetushkov@9858: }