1 /*
   2  * Copyright (c) 2014, 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 "classfile/classLoaderData.hpp"
  27 #include "jfr/jfrEvents.hpp"
  28 #include "memory/metaspaceTracer.hpp"
  29 #include "oops/oop.inline.hpp"
  30 
  31 void MetaspaceTracer::report_gc_threshold(size_t old_val,
  32                                           size_t new_val,
  33                                           MetaspaceGCThresholdUpdater::Type updater) const {
  34 #if INCLUDE_JFR
  35   EventMetaspaceGCThreshold event;
  36   if (event.should_commit()) {
  37     event.set_oldValue(old_val);
  38     event.set_newValue(new_val);
  39     event.set_updater((u1)updater);
  40     event.commit();
  41   }
  42 #endif
  43 }
  44 
  45 void MetaspaceTracer::report_metaspace_allocation_failure(ClassLoaderData *cld,
  46                                                           size_t word_size,
  47                                                           MetaspaceObj::Type objtype,
  48                                                           Metaspace::MetadataType mdtype) const {
  49 #if INCLUDE_JFR
  50   send_allocation_failure_event<EventMetaspaceAllocationFailure>(cld, word_size, objtype, mdtype);
  51 #endif
  52 }
  53 
  54 void MetaspaceTracer::report_metadata_oom(ClassLoaderData *cld,
  55                                          size_t word_size,
  56                                          MetaspaceObj::Type objtype,
  57                                          Metaspace::MetadataType mdtype) const {
  58 #if INCLUDE_JFR
  59   send_allocation_failure_event<EventMetaspaceOOM>(cld, word_size, objtype, mdtype);
  60 #endif
  61 }
  62 
  63 template <typename E>
  64 void MetaspaceTracer::send_allocation_failure_event(ClassLoaderData *cld,
  65                                                     size_t word_size,
  66                                                     MetaspaceObj::Type objtype,
  67                                                     Metaspace::MetadataType mdtype) const {
  68 #if INCLUDE_JFR
  69   E event;
  70   if (event.should_commit()) {
  71     if (cld->is_anonymous()) {
  72       event.set_classLoader(NULL);
  73       event.set_anonymousClassLoader(true);
  74     } else {
  75       if (cld->is_the_null_class_loader_data()) {
  76         event.set_classLoader(NULL);
  77       } else {
  78         event.set_classLoader(cld);
  79       }
  80       event.set_anonymousClassLoader(false);
  81     }
  82 
  83     event.set_size(word_size * BytesPerWord);
  84     event.set_metadataType((u1) mdtype);
  85     event.set_metaspaceObjectType((u1) objtype);
  86     event.commit();
  87   }
  88 #endif
  89 }