1 /*
   2  * Copyright (c) 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/jfr.hpp"
  27 #include "jfr/leakprofiler/leakProfiler.hpp"
  28 #include "jfr/periodic/sampling/jfrThreadSampler.hpp"
  29 #include "jfr/recorder/jfrRecorder.hpp"
  30 #include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp"
  31 #include "jfr/recorder/repository/jfrEmergencyDump.hpp"
  32 #include "jfr/recorder/service/jfrOptionSet.hpp"
  33 #include "jfr/support/jfrThreadLocal.hpp"
  34 #include "runtime/java.hpp"
  35 
  36 bool Jfr::is_enabled() {
  37   return JfrRecorder::is_enabled();
  38 }
  39 
  40 bool Jfr::is_disabled() {
  41   return JfrRecorder::is_disabled();
  42 }
  43 
  44 bool Jfr::is_recording() {
  45   return JfrRecorder::is_recording();
  46 }
  47 
  48 void Jfr::on_vm_init() {
  49   if (!JfrRecorder::on_vm_init()) {
  50     vm_exit_during_initialization("Failure when starting JFR on_vm_init");
  51   }
  52 }
  53 
  54 void Jfr::on_vm_start() {
  55   if (!JfrRecorder::on_vm_start()) {
  56     vm_exit_during_initialization("Failure when starting JFR on_vm_start");
  57   }
  58 }
  59 
  60 void Jfr::on_unloading_classes() {
  61   if (JfrRecorder::is_created()) {
  62     JfrCheckpointManager::write_type_set_for_unloaded_classes();
  63   }
  64 }
  65 
  66 void Jfr::on_thread_start(Thread* t) {
  67   JfrThreadLocal::on_start(t);
  68 }
  69 
  70 void Jfr::on_thread_exit(Thread* t) {
  71   JfrThreadLocal::on_exit(t);
  72 }
  73 
  74 void Jfr::on_java_thread_dismantle(JavaThread* jt) {
  75   if (JfrRecorder::is_recording()) {
  76     JfrCheckpointManager::write_thread_checkpoint(jt);
  77   }
  78 }
  79 
  80 void Jfr::on_vm_shutdown(bool exception_handler) {
  81   JfrRecorder::set_is_shutting_down();
  82   if (JfrRecorder::is_recording()) {
  83     JfrEmergencyDump::on_vm_shutdown(exception_handler);
  84   }
  85 }
  86 
  87 void Jfr::weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f) {
  88   LeakProfiler::oops_do(is_alive, f);
  89 }
  90 
  91 void Jfr::weak_oops_do(OopClosure* f) {
  92   AlwaysTrueClosure always_true;
  93   LeakProfiler::oops_do(&always_true, f);
  94 }
  95 
  96 bool Jfr::on_flight_recorder_option(const JavaVMOption** option, char* delimiter) {
  97   return JfrOptionSet::parse_flight_recorder_option(option, delimiter);
  98 }
  99 
 100 bool Jfr::on_start_flight_recording_option(const JavaVMOption** option, char* delimiter) {
 101   return JfrOptionSet::parse_start_flight_recording_option(option, delimiter);
 102 }
 103 
 104 Thread* Jfr::sampler_thread() {
 105   return JfrThreadSampling::sampler_thread();
 106 }