Fri, 10 Jul 2009 11:10:00 -0700
6857194: Add hotspot perf counters to aid class loading performance measurement
Summary: Add new jvmstat counters to measure detailed class loading time
Reviewed-by: acorn, kamg
1 /*
2 * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 #ifndef _JVMTI_CODE_BLOB_EVENTS_H_
26 #define _JVMTI_CODE_BLOB_EVENTS_H_
28 // forward declaration
29 class JvmtiEnv;
32 // JVMTI code blob event support
33 // -- used by GenerateEvents to generate CompiledMethodLoad and
34 // DynamicCodeGenerated events
35 // -- also provide utility function build_jvmti_addr_location_map to create
36 // a jvmtiAddrLocationMap list for a nmethod.
38 class JvmtiCodeBlobEvents : public AllStatic {
39 public:
41 // generate a DYNAMIC_CODE_GENERATED_EVENT event for each non-nmethod
42 // code blob in the code cache.
43 static jvmtiError generate_dynamic_code_events(JvmtiEnv* env);
45 // generate a COMPILED_METHOD_LOAD event for each nmethod
46 // code blob in the code cache.
47 static jvmtiError generate_compiled_method_load_events(JvmtiEnv* env);
49 // create a C-heap allocated address location map for an nmethod
50 static void build_jvmti_addr_location_map(nmethod *nm, jvmtiAddrLocationMap** map,
51 jint *map_length);
52 };
54 #endif