1 /*
   2  * Copyright (c) 2012, 2019, 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/periodic/sampling/jfrThreadSampler.hpp"
  28 #include "jfr/recorder/access/jfrbackend.hpp"
  29 #include "jfr/recorder/jfrEventSetting.inline.hpp"
  30 
  31 void JfrBackend::on_javathread_exit(JavaThread *thread) {
  32   Jfr::on_thread_exit(thread);
  33 }
  34 
  35 void JfrBackend::on_thread_destruct(Thread* thread) {
  36   // vm thread shouldn't call Jfr::on_thread_destruct(), ref jdk11.
  37   if (thread == VMThread::vm_thread()) {
  38     return;
  39   }
  40   Jfr::on_thread_destruct(thread);
  41 }
  42 
  43 void JfrBackend::on_javathread_suspend(JavaThread* thread) {
  44   JfrThreadSampler::on_javathread_suspend(thread);
  45 }
  46 
  47 bool JfrBackend::enabled() {
  48   return Jfr::is_enabled();
  49 }
  50 
  51 bool JfrBackend::is_event_enabled(TraceEventId event_id) {
  52   return JfrEventSetting::is_enabled(event_id);
  53 }
  54 
  55 bool JfrBackend::is_stacktrace_enabled(TraceEventId event_id) {
  56   return JfrEventSetting::has_stacktrace(event_id);
  57 }
  58 
  59 jlong JfrBackend::threshold(TraceEventId event_id) {
  60   return JfrEventSetting::threshold(event_id);
  61 }
  62 
  63 void JfrBackend::on_unloading_classes() {
  64   Jfr::on_unloading_classes();
  65 }
  66 
  67 JfrTraceTime JfrBackend::time() {
  68   return JfrTraceTime::now();
  69 }