Fri, 21 Mar 2014 10:31:51 +0100
8036703: Add trace event with statistics for the metaspace chunk free lists
Reviewed-by: stefank, mgerdin, coleenp, egahlin
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.
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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.
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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
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23 */
25 #include "precompiled.hpp"
26 #include "classfile/classLoaderData.hpp"
27 #include "memory/metaspaceTracer.hpp"
28 #include "trace/tracing.hpp"
29 #include "trace/traceBackend.hpp"
31 void MetaspaceTracer::report_gc_threshold(size_t old_val,
32 size_t new_val,
33 MetaspaceGCThresholdUpdater::Type updater) const {
34 EventMetaspaceGCThreshold event;
35 if (event.should_commit()) {
36 event.set_oldValue(old_val);
37 event.set_newValue(new_val);
38 event.set_updater((u1)updater);
39 event.commit();
40 }
41 }
43 void MetaspaceTracer::report_metaspace_allocation_failure(ClassLoaderData *cld,
44 size_t word_size,
45 MetaspaceObj::Type objtype,
46 Metaspace::MetadataType mdtype) const {
47 send_allocation_failure_event<EventMetaspaceAllocationFailure>(cld, word_size, objtype, mdtype);
48 }
50 void MetaspaceTracer::report_metadata_oom(ClassLoaderData *cld,
51 size_t word_size,
52 MetaspaceObj::Type objtype,
53 Metaspace::MetadataType mdtype) const {
54 send_allocation_failure_event<EventMetaspaceOOM>(cld, word_size, objtype, mdtype);
55 }
57 template <typename E>
58 void MetaspaceTracer::send_allocation_failure_event(ClassLoaderData *cld,
59 size_t word_size,
60 MetaspaceObj::Type objtype,
61 Metaspace::MetadataType mdtype) const {
62 E event;
63 if (event.should_commit()) {
64 if (cld->is_anonymous()) {
65 event.set_classLoader(NULL);
66 event.set_anonymousClassLoader(true);
67 } else {
68 if (cld->is_the_null_class_loader_data()) {
69 event.set_classLoader((Klass*) NULL);
70 } else {
71 event.set_classLoader(cld->class_loader()->klass());
72 }
73 event.set_anonymousClassLoader(false);
74 }
76 event.set_size(word_size * BytesPerWord);
77 event.set_metadataType((u1) mdtype);
78 event.set_metaspaceObjectType((u1) objtype);
79 event.commit();
80 }
81 }