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/*
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* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "jfr/dcmd/jfrDcmds.hpp"
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#include "jfr/recorder/jfrRecorder.hpp"
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#include "jfr/recorder/repository/jfrChunk.hpp"
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#include "jfr/recorder/repository/jfrChunkWriter.hpp"
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#include "jfr/utilities/jfrTimeConverter.hpp"
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#include "logging/log.hpp"
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#include "runtime/os.inline.hpp"
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#include "runtime/thread.inline.hpp"
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static const u1 GUARD = 0xff;
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static jlong nanos_now() {
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return os::javaTimeMillis() * JfrTimeConverter::NANOS_PER_MILLISEC;
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}
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static jlong ticks_now() {
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return JfrTicks::now();
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}
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JfrChunk::JfrChunk() :
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_path(NULL),
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_start_ticks(0),
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_previous_start_ticks(invalid_time),
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_start_nanos(0),
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_previous_start_nanos(invalid_time),
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_last_update_nanos(0),
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_last_checkpoint_offset(0),
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_last_metadata_offset(0),
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_generation(1) {}
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JfrChunk::~JfrChunk() {
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reset();
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}
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void JfrChunk::reset() {
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if (_path != NULL) {
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JfrCHeapObj::free(_path, strlen(_path) + 1);
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_path = NULL;
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}
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_last_checkpoint_offset = _last_metadata_offset = 0;
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_generation = 1;
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}
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void JfrChunk::set_last_checkpoint_offset(int64_t offset) {
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_last_checkpoint_offset = offset;
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}
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int64_t JfrChunk::last_checkpoint_offset() const {
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return _last_checkpoint_offset;
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}
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int64_t JfrChunk::start_ticks() const {
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assert(_start_ticks != 0, "invariant");
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return _start_ticks;
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}
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int64_t JfrChunk::start_nanos() const {
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assert(_start_nanos != 0, "invariant");
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return _start_nanos;
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}
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int64_t JfrChunk::previous_start_ticks() const {
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assert(_previous_start_ticks != invalid_time, "invariant");
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return _previous_start_ticks;
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}
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int64_t JfrChunk::previous_start_nanos() const {
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assert(_previous_start_nanos != invalid_time, "invariant");
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return _previous_start_nanos;
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}
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void JfrChunk::update_start_ticks() {
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_start_ticks = ticks_now();
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}
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void JfrChunk::update_start_nanos() {
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_start_nanos = _last_update_nanos = nanos_now();
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}
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void JfrChunk::update() {
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_last_update_nanos = nanos_now();
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}
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void JfrChunk::save_current_and_update_start_ticks() {
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_previous_start_ticks = _start_ticks;
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update_start_ticks();
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}
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void JfrChunk::save_current_and_update_start_nanos() {
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_previous_start_nanos = _start_nanos;
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update_start_nanos();
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}
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void JfrChunk::update_time_to_now() {
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save_current_and_update_start_nanos();
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save_current_and_update_start_ticks();
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}
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int64_t JfrChunk::last_chunk_duration() const {
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assert(_previous_start_nanos != invalid_time, "invariant");
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return _start_nanos - _previous_start_nanos;
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}
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static char* copy_path(const char* path) {
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assert(path != NULL, "invariant");
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const size_t path_len = strlen(path);
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char* new_path = JfrCHeapObj::new_array<char>(path_len + 1);
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strncpy(new_path, path, path_len + 1);
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return new_path;
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}
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void JfrChunk::set_path(const char* path) {
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if (_path != NULL) {
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JfrCHeapObj::free(_path, strlen(_path) + 1);
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_path = NULL;
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}
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if (path != NULL) {
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_path = copy_path(path);
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}
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}
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const char* JfrChunk::path() const {
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return _path;
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}
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bool JfrChunk::is_started() const {
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return _start_nanos != 0;
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}
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bool JfrChunk::is_finished() const {
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return 0 == _generation;
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}
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bool JfrChunk::is_initial_flush() const {
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return 0 == _last_metadata_offset;
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}
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int64_t JfrChunk::duration() const {
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assert(_last_update_nanos >= _start_nanos, "invariant");
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return _last_update_nanos - _start_nanos;
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}
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int64_t JfrChunk::last_metadata_offset() const {
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return _last_metadata_offset;
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}
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void JfrChunk::set_last_metadata_offset(int64_t offset) {
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if (0 == offset) {
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return;
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}
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assert(offset > _last_metadata_offset, "invariant");
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_last_metadata_offset = offset;
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}
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bool JfrChunk::has_metadata() const {
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return 0 != _last_metadata_offset;
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}
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u1 JfrChunk::generation() const {
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assert(_generation > 0, "invariant");
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const u1 this_generation = _generation++;
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if (GUARD == _generation) {
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_generation = 1;
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}
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return this_generation;
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}
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