Fri, 05 Oct 2012 18:57:10 -0700
7177003: C1: LogCompilation support
Summary: add LogCompilation support in C1 - both client and tiered mode.
Reviewed-by: twisti, kvn
1 /*
2 * Copyright (c) 1997, 2010, 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 */
25 #include "precompiled.hpp"
26 #include "prims/jvm.h"
27 #include "runtime/mutexLocker.hpp"
28 #include "runtime/os.hpp"
29 #include "utilities/decoder.hpp"
30 #include "utilities/vmError.hpp"
32 #if defined(_WINDOWS)
33 #include "decoder_windows.hpp"
34 #elif defined(__APPLE__)
35 #include "decoder_machO.hpp"
36 #else
37 #include "decoder_elf.hpp"
38 #endif
40 AbstractDecoder* Decoder::_shared_decoder = NULL;
41 AbstractDecoder* Decoder::_error_handler_decoder = NULL;
42 NullDecoder Decoder::_do_nothing_decoder;
43 Mutex* Decoder::_shared_decoder_lock = new Mutex(Mutex::native,
44 "SharedDecoderLock");
46 AbstractDecoder* Decoder::get_shared_instance() {
47 assert(_shared_decoder_lock != NULL && _shared_decoder_lock->owned_by_self(),
48 "Require DecoderLock to enter");
50 if (_shared_decoder == NULL) {
51 _shared_decoder = create_decoder();
52 }
53 return _shared_decoder;
54 }
56 AbstractDecoder* Decoder::get_error_handler_instance() {
57 if (_error_handler_decoder == NULL) {
58 _error_handler_decoder = create_decoder();
59 }
60 return _error_handler_decoder;
61 }
64 AbstractDecoder* Decoder::create_decoder() {
65 AbstractDecoder* decoder;
66 #if defined(_WINDOWS)
67 decoder = new (std::nothrow) WindowsDecoder();
68 #elif defined (__APPLE__)
69 decoder = new (std::nothrow)MachODecoder();
70 #else
71 decoder = new (std::nothrow)ElfDecoder();
72 #endif
74 if (decoder == NULL || decoder->has_error()) {
75 if (decoder != NULL) {
76 delete decoder;
77 }
78 decoder = &_do_nothing_decoder;
79 }
80 return decoder;
81 }
83 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const char* modulepath) {
84 assert(_shared_decoder_lock != NULL, "Just check");
85 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid;
86 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true);
87 AbstractDecoder* decoder = error_handling_thread ?
88 get_error_handler_instance(): get_shared_instance();
89 assert(decoder != NULL, "null decoder");
91 return decoder->decode(addr, buf, buflen, offset, modulepath);
92 }
94 bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const void* base) {
95 assert(_shared_decoder_lock != NULL, "Just check");
96 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid;
97 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true);
98 AbstractDecoder* decoder = error_handling_thread ?
99 get_error_handler_instance(): get_shared_instance();
100 assert(decoder != NULL, "null decoder");
102 return decoder->decode(addr, buf, buflen, offset, base);
103 }
106 bool Decoder::demangle(const char* symbol, char* buf, int buflen) {
107 assert(_shared_decoder_lock != NULL, "Just check");
108 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid;
109 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true);
110 AbstractDecoder* decoder = error_handling_thread ?
111 get_error_handler_instance(): get_shared_instance();
112 assert(decoder != NULL, "null decoder");
113 return decoder->demangle(symbol, buf, buflen);
114 }
116 bool Decoder::can_decode_C_frame_in_vm() {
117 assert(_shared_decoder_lock != NULL, "Just check");
118 bool error_handling_thread = os::current_thread_id() == VMError::first_error_tid;
119 MutexLockerEx locker(error_handling_thread ? NULL : _shared_decoder_lock, true);
120 AbstractDecoder* decoder = error_handling_thread ?
121 get_error_handler_instance(): get_shared_instance();
122 assert(decoder != NULL, "null decoder");
123 return decoder->can_decode_C_frame_in_vm();
124 }
126 /*
127 * Shutdown shared decoder and replace it with
128 * _do_nothing_decoder. Do nothing with error handler
129 * instance, since the JVM is going down.
130 */
131 void Decoder::shutdown() {
132 assert(_shared_decoder_lock != NULL, "Just check");
133 MutexLockerEx locker(_shared_decoder_lock, true);
135 if (_shared_decoder != NULL &&
136 _shared_decoder != &_do_nothing_decoder) {
137 delete _shared_decoder;
138 }
140 _shared_decoder = &_do_nothing_decoder;
141 }