/* Copyright (C) 2018 The Android Open Source Project
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This file implements interfaces from the file jvmti . h . This implementation
* is licensed under the same terms as the file jvmti . h . The
* copyright and license information for the file jvmti . h follows .
*
* Copyright ( c ) 2003 , 2011 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation . Oracle designates this
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include "ti_logging.h"
#include "art_jvmti.h"
#include "base/logging.h"
#include "base/mutex.h"
#include "base/strlcpy.h"
#include "cmdline_types.h"
#include "jvmti.h"
#include "thread-current-inl.h"
namespace openjdkjvmti {
jvmtiError LogUtil::GetLastError(jvmtiEnv* env, char ** data) {
if (env == nullptr || data == nullptr) {
return ERR(INVALID_ENVIRONMENT);
}
ArtJvmTiEnv* tienv = ArtJvmTiEnv::AsArtJvmTiEnv(env);
art::MutexLock mu(art::Thread::Current(), tienv->last_error_mutex_);
if (tienv->last_error_.empty()) {
return ERR(ABSENT_INFORMATION);
}
const size_t size = tienv->last_error_.size() + 1 ;
char * out;
jvmtiError err = tienv->Allocate(size, reinterpret_cast <unsigned char **>(&out));
if (err != OK) {
return err;
}
strlcpy(out, tienv->last_error_.c_str(), size);
*data = out;
return OK;
}
jvmtiError LogUtil::ClearLastError(jvmtiEnv* env) {
if (env == nullptr) {
return ERR(INVALID_ENVIRONMENT);
}
ArtJvmTiEnv* tienv = ArtJvmTiEnv::AsArtJvmTiEnv(env);
art::MutexLock mu(art::Thread::Current(), tienv->last_error_mutex_);
tienv->last_error_.clear();
return OK;
}
jvmtiError LogUtil::SetVerboseFlagExt(jvmtiEnv* env, const char * data, jboolean enable) {
if (env == nullptr) {
return ERR(INVALID_ENVIRONMENT);
} else if (data == nullptr) {
return ERR(NULL_POINTER);
}
bool new_value = (enable == JNI_TRUE) ? true : false ;
art::CmdlineType<art::LogVerbosity> cmdline_parser;
std::string parse_data(data);
art::CmdlineType<art::LogVerbosity>::Result result = cmdline_parser.Parse(parse_data);
if (result.IsError()) {
JVMTI_LOG(INFO, env) << "Invalid verbose argument: '" << parse_data << "'. Error was "
<< result.GetMessage();
return ERR(ILLEGAL_ARGUMENT);
}
const art::LogVerbosity& input_verbosity = result.GetValue();
const bool * verbosity_arr = reinterpret_cast <const bool *>(&input_verbosity);
bool * g_log_verbosity_arr = reinterpret_cast <bool *>(&art::gLogVerbosity);
// Copy/invert the verbosity byte-by-byte (sizeof(bool) == 1).
for (size_t i = 0 ; i < sizeof (art::LogVerbosity); i++) {
if (verbosity_arr[i]) {
g_log_verbosity_arr[i] = new_value;
}
}
return OK;
}
jvmtiError LogUtil::SetVerboseFlag([[maybe_unused]] jvmtiEnv* env,
jvmtiVerboseFlag flag,
jboolean value) {
if (flag == jvmtiVerboseFlag::JVMTI_VERBOSE_OTHER) {
// OTHER is special, as it's 0, so can't do a bit check.
bool val = (value == JNI_TRUE) ? true : false ;
art::gLogVerbosity.collector = val;
art::gLogVerbosity.compiler = val;
art::gLogVerbosity.deopt = val;
art::gLogVerbosity.heap = val;
art::gLogVerbosity.interpreter = val;
art::gLogVerbosity.jdwp = val;
art::gLogVerbosity.jit = val;
art::gLogVerbosity.monitor = val;
art::gLogVerbosity.oat = val;
art::gLogVerbosity.profiler = val;
art::gLogVerbosity.signals = val;
art::gLogVerbosity.simulator = val;
art::gLogVerbosity.startup = val;
art::gLogVerbosity.third_party_jni = val;
art::gLogVerbosity.threads = val;
art::gLogVerbosity.verifier = val;
// Do not set verifier-debug.
art::gLogVerbosity.image = val;
art::gLogVerbosity.plugin = val;
// Note: can't switch systrace_lock_logging. That requires changing entrypoints.
art::gLogVerbosity.agents = val;
} else {
// Spec isn't clear whether "flag" is a mask or supposed to be single. We implement the mask
// semantics.
constexpr std::underlying_type<jvmtiVerboseFlag>::type kMask =
jvmtiVerboseFlag::JVMTI_VERBOSE_GC |
jvmtiVerboseFlag::JVMTI_VERBOSE_CLASS |
jvmtiVerboseFlag::JVMTI_VERBOSE_JNI;
if ((flag & ~kMask) != 0 ) {
return ERR(ILLEGAL_ARGUMENT);
}
bool val = (value == JNI_TRUE) ? true : false ;
if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_GC) != 0 ) {
art::gLogVerbosity.gc = val;
}
if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_CLASS) != 0 ) {
art::gLogVerbosity.class_linker = val;
}
if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_JNI) != 0 ) {
art::gLogVerbosity.jni = val;
}
}
return ERR(NONE);
}
} // namespace openjdkjvmti
Messung V0.5 in Prozent C=95 H=91 G=92
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-29)
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