1 /* 2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "jfr/dcmd/jfrDcmds.hpp" 27 #include "jfr/recorder/jfrRecorder.hpp" 28 #include "jfr/recorder/repository/jfrChunkState.hpp" 29 #include "jfr/recorder/repository/jfrChunkWriter.hpp" 30 #include "jfr/utilities/jfrTraceTime.hpp" 31 #include "jfr/utilities/jfrTimeConverter.hpp" 32 #include "logging/log.hpp" 33 #include "runtime/os.inline.hpp" 34 #include "runtime/thread.inline.hpp" 35 36 JfrChunkState::JfrChunkState() : 37 _path(NULL), 38 _start_ticks(0), 39 _start_nanos(0), 40 _previous_start_ticks(0), 41 _previous_start_nanos(0), 42 _previous_checkpoint_offset(0) {} 43 44 JfrChunkState::~JfrChunkState() { 45 reset(); 46 } 47 48 void JfrChunkState::reset() { 49 if (_path != NULL) { 50 JfrCHeapObj::free(_path, strlen(_path) + 1); 51 _path = NULL; 52 } 53 set_previous_checkpoint_offset(0); 54 } 55 56 void JfrChunkState::set_previous_checkpoint_offset(jlong offset) { 57 _previous_checkpoint_offset = offset; 58 } 59 60 jlong JfrChunkState::previous_checkpoint_offset() const { 61 return _previous_checkpoint_offset; 62 } 63 64 jlong JfrChunkState::previous_start_ticks() const { 65 return _previous_start_ticks; 66 } 67 68 jlong JfrChunkState::previous_start_nanos() const { 69 return _previous_start_nanos; 70 } 71 72 void JfrChunkState::update_start_ticks() { 73 _start_ticks = JfrTraceTime::now().value(); 74 } 75 76 void JfrChunkState::update_start_nanos() { 77 _start_nanos = os::javaTimeMillis() * JfrTimeConverter::NANOS_PER_MILLISEC; 78 } 79 80 void JfrChunkState::save_current_and_update_start_ticks() { 81 _previous_start_ticks = _start_ticks; 82 update_start_ticks(); 83 } 84 85 void JfrChunkState::save_current_and_update_start_nanos() { 86 _previous_start_nanos = _start_nanos; 87 update_start_nanos(); 88 } 89 90 void JfrChunkState::update_time_to_now() { 91 save_current_and_update_start_nanos(); 92 save_current_and_update_start_ticks(); 93 } 94 95 jlong JfrChunkState::last_chunk_duration() const { 96 return _start_nanos - _previous_start_nanos; 97 } 98 99 static char* copy_path(const char* path) { 100 assert(path != NULL, "invariant"); 101 const size_t path_len = strlen(path); 102 char* new_path = JfrCHeapObj::new_array<char>(path_len + 1); 103 strncpy(new_path, path, path_len); 104 new_path[path_len] = '\0'; 105 return new_path; 106 } 107 108 void JfrChunkState::set_path(const char* path) { 109 assert(JfrStream_lock->owned_by_self(), "invariant"); 110 if (_path != NULL) { 111 JfrCHeapObj::free(_path, strlen(_path) + 1); 112 _path = NULL; 113 } 114 if (path != NULL) { 115 _path = copy_path(path); 116 } 117 } 118 119 const char* JfrChunkState::path() const { 120 return _path; 121 }