| author | mgronlun |
| Wed, 30 Oct 2019 19:43:52 +0100 | |
| changeset 58863 | c16ac7a2eba4 |
| parent 58132 | src/hotspot/share/jfr/recorder/repository/jfrChunkState.cpp@caa25ab47aca |
| child 59226 | a0f39cc47387 |
| permissions | -rw-r--r-- |
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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/recorder/repository/jfrChunk.hpp" |
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#include "jfr/recorder/service/jfrOptionSet.hpp" |
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#include "jfr/utilities/jfrTime.hpp" |
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#include "jfr/utilities/jfrTimeConverter.hpp" |
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#include "jfr/utilities/jfrTypes.hpp" |
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#include "runtime/os.inline.hpp" |
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static const char* const MAGIC = "FLR"; |
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static const u2 JFR_VERSION_MAJOR = 2; |
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static const u2 JFR_VERSION_MINOR = 1; |
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// strictly monotone |
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static jlong nanos_now() {
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static jlong last = 0; |
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const jlong now = os::javaTimeMillis() * JfrTimeConverter::NANOS_PER_MILLISEC; |
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if (now > last) {
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last = now; |
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} else {
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++last; |
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} |
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return last; |
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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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const char* JfrChunk::magic() const {
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return MAGIC; |
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} |
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u2 JfrChunk::major_version() const {
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return JFR_VERSION_MAJOR; |
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} |
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u2 JfrChunk::minor_version() const {
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return JFR_VERSION_MINOR; |
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} |
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u2 JfrChunk::capabilities() const {
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// chunk capabilities, CompressedIntegers etc |
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static bool compressed_integers = JfrOptionSet::compressed_integers(); |
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return compressed_integers; |
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} |
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int64_t JfrChunk::cpu_frequency() const {
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static const jlong frequency = JfrTime::frequency(); |
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return frequency; |
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} |
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void JfrChunk::set_last_checkpoint_offset(int64_t offset) {
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58132
caa25ab47aca
8225797: OldObjectSample event creates unexpected amount of checkpoint data
mgronlun
parents:
53897
diff
changeset
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_last_checkpoint_offset = offset; |
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} |
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||
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int64_t JfrChunk::last_checkpoint_offset() const {
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58132
caa25ab47aca
8225797: OldObjectSample event creates unexpected amount of checkpoint data
mgronlun
parents:
53897
diff
changeset
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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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const jlong now = nanos_now(); |
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assert(now > _start_nanos, "invariant"); |
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assert(now > _last_update_nanos, "invariant"); |
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_start_nanos = _last_update_nanos = now; |
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} |
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void JfrChunk::update_current_nanos() {
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const jlong now = nanos_now(); |
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assert(now > _last_update_nanos, "invariant"); |
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_last_update_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::set_time_stamp() {
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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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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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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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u1 JfrChunk::next_generation() const {
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assert(_generation > 0, "invariant"); |
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const u1 next_gen = _generation; |
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return GUARD == next_gen ? 1 : next_gen; |
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} |