1 /* Copyright (C) 2018 The Android Open Source Project
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This file implements interfaces from the file jvmti.h. This implementation
5 * is licensed under the same terms as the file jvmti.h. The
6 * copyright and license information for the file jvmti.h follows.
7 *
8 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
9 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
10 *
11 * This code is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 2 only, as
13 * published by the Free Software Foundation. Oracle designates this
14 * particular file as subject to the "Classpath" exception as provided
15 * by Oracle in the LICENSE file that accompanied this code.
16 *
17 * This code is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * version 2 for more details (a copy is included in the LICENSE file that
21 * accompanied this code).
22 *
23 * You should have received a copy of the GNU General Public License version
24 * 2 along with this work; if not, write to the Free Software Foundation,
25 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
26 *
27 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
28 * or visit www.oracle.com if you need additional information or have any
29 * questions.
30 */
31
32 #include "ti_logging.h"
33
34 #include "art_jvmti.h"
35
36 #include "base/logging.h"
37 #include "base/mutex.h"
38 #include "base/strlcpy.h"
39 #include "cmdline_types.h"
40 #include "jvmti.h"
41 #include "thread-current-inl.h"
42
43 namespace openjdkjvmti {
44
GetLastError(jvmtiEnv * env,char ** data)45 jvmtiError LogUtil::GetLastError(jvmtiEnv* env, char** data) {
46 if (env == nullptr || data == nullptr) {
47 return ERR(INVALID_ENVIRONMENT);
48 }
49 ArtJvmTiEnv* tienv = ArtJvmTiEnv::AsArtJvmTiEnv(env);
50 art::MutexLock mu(art::Thread::Current(), tienv->last_error_mutex_);
51 if (tienv->last_error_.empty()) {
52 return ERR(ABSENT_INFORMATION);
53 }
54 const size_t size = tienv->last_error_.size() + 1;
55 char* out;
56 jvmtiError err = tienv->Allocate(size, reinterpret_cast<unsigned char**>(&out));
57 if (err != OK) {
58 return err;
59 }
60 strlcpy(out, tienv->last_error_.c_str(), size);
61 *data = out;
62 return OK;
63 }
64
ClearLastError(jvmtiEnv * env)65 jvmtiError LogUtil::ClearLastError(jvmtiEnv* env) {
66 if (env == nullptr) {
67 return ERR(INVALID_ENVIRONMENT);
68 }
69 ArtJvmTiEnv* tienv = ArtJvmTiEnv::AsArtJvmTiEnv(env);
70 art::MutexLock mu(art::Thread::Current(), tienv->last_error_mutex_);
71 tienv->last_error_.clear();
72 return OK;
73 }
74
SetVerboseFlagExt(jvmtiEnv * env,const char * data,jboolean enable)75 jvmtiError LogUtil::SetVerboseFlagExt(jvmtiEnv* env, const char* data, jboolean enable) {
76 if (env == nullptr) {
77 return ERR(INVALID_ENVIRONMENT);
78 } else if (data == nullptr) {
79 return ERR(NULL_POINTER);
80 }
81 bool new_value = (enable == JNI_TRUE) ? true : false;
82 art::CmdlineType<art::LogVerbosity> cmdline_parser;
83 std::string parse_data(data);
84 art::CmdlineType<art::LogVerbosity>::Result result = cmdline_parser.Parse(parse_data);
85 if (result.IsError()) {
86 JVMTI_LOG(INFO, env) << "Invalid verbose argument: '" << parse_data << "'. Error was "
87 << result.GetMessage();
88 return ERR(ILLEGAL_ARGUMENT);
89 }
90
91 const art::LogVerbosity& input_verbosity = result.GetValue();
92 const bool* verbosity_arr = reinterpret_cast<const bool*>(&input_verbosity);
93 bool* g_log_verbosity_arr = reinterpret_cast<bool*>(&art::gLogVerbosity);
94 // Copy/invert the verbosity byte-by-byte (sizeof(bool) == 1).
95 for (size_t i = 0; i < sizeof(art::LogVerbosity); i++) {
96 if (verbosity_arr[i]) {
97 g_log_verbosity_arr[i] = new_value;
98 }
99 }
100 return OK;
101 }
102
SetVerboseFlag(jvmtiEnv * env ATTRIBUTE_UNUSED,jvmtiVerboseFlag flag,jboolean value)103 jvmtiError LogUtil::SetVerboseFlag(jvmtiEnv* env ATTRIBUTE_UNUSED,
104 jvmtiVerboseFlag flag,
105 jboolean value) {
106 if (flag == jvmtiVerboseFlag::JVMTI_VERBOSE_OTHER) {
107 // OTHER is special, as it's 0, so can't do a bit check.
108 bool val = (value == JNI_TRUE) ? true : false;
109
110 art::gLogVerbosity.collector = val;
111 art::gLogVerbosity.compiler = val;
112 art::gLogVerbosity.deopt = val;
113 art::gLogVerbosity.heap = val;
114 art::gLogVerbosity.interpreter = val;
115 art::gLogVerbosity.jdwp = val;
116 art::gLogVerbosity.jit = val;
117 art::gLogVerbosity.monitor = val;
118 art::gLogVerbosity.oat = val;
119 art::gLogVerbosity.profiler = val;
120 art::gLogVerbosity.signals = val;
121 art::gLogVerbosity.simulator = val;
122 art::gLogVerbosity.startup = val;
123 art::gLogVerbosity.third_party_jni = val;
124 art::gLogVerbosity.threads = val;
125 art::gLogVerbosity.verifier = val;
126 // Do not set verifier-debug.
127 art::gLogVerbosity.image = val;
128 art::gLogVerbosity.plugin = val;
129
130 // Note: can't switch systrace_lock_logging. That requires changing entrypoints.
131
132 art::gLogVerbosity.agents = val;
133 } else {
134 // Spec isn't clear whether "flag" is a mask or supposed to be single. We implement the mask
135 // semantics.
136 constexpr std::underlying_type<jvmtiVerboseFlag>::type kMask =
137 jvmtiVerboseFlag::JVMTI_VERBOSE_GC |
138 jvmtiVerboseFlag::JVMTI_VERBOSE_CLASS |
139 jvmtiVerboseFlag::JVMTI_VERBOSE_JNI;
140 if ((flag & ~kMask) != 0) {
141 return ERR(ILLEGAL_ARGUMENT);
142 }
143
144 bool val = (value == JNI_TRUE) ? true : false;
145
146 if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_GC) != 0) {
147 art::gLogVerbosity.gc = val;
148 }
149
150 if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_CLASS) != 0) {
151 art::gLogVerbosity.class_linker = val;
152 }
153
154 if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_JNI) != 0) {
155 art::gLogVerbosity.jni = val;
156 }
157 }
158
159 return ERR(NONE);
160 }
161
162 } // namespace openjdkjvmti
163