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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "logging.h"
#include "base/mutex.h"
#include "runtime.h"
#include "thread-inl.h"
#include "UniquePtr.h"
#include "utils.h"
namespace art {
LogVerbosity gLogVerbosity;
std::vector<std::string> gVerboseMethods;
unsigned int gAborting = 0;
static LogSeverity gMinimumLogSeverity = INFO;
static UniquePtr<std::string> gCmdLine;
static UniquePtr<std::string> gProgramInvocationName;
static UniquePtr<std::string> gProgramInvocationShortName;
const char* GetCmdLine() {
return (gCmdLine.get() != nullptr) ? gCmdLine->c_str() : nullptr;
}
const char* ProgramInvocationName() {
return (gProgramInvocationName.get() != nullptr) ? gProgramInvocationName->c_str() : "art";
}
const char* ProgramInvocationShortName() {
return (gProgramInvocationShortName.get() != nullptr) ? gProgramInvocationShortName->c_str()
: "art";
}
// Configure logging based on ANDROID_LOG_TAGS environment variable.
// We need to parse a string that looks like
//
// *:v jdwp:d dalvikvm:d dalvikvm-gc:i dalvikvmi:i
//
// The tag (or '*' for the global level) comes first, followed by a colon
// and a letter indicating the minimum priority level we're expected to log.
// This can be used to reveal or conceal logs with specific tags.
void InitLogging(char* argv[]) {
if (gCmdLine.get() != nullptr) {
return;
}
// TODO: Move this to a more obvious InitART...
Locks::Init();
// Stash the command line for later use. We can use /proc/self/cmdline on Linux to recover this,
// but we don't have that luxury on the Mac, and there are a couple of argv[0] variants that are
// commonly used.
if (argv != NULL) {
gCmdLine.reset(new std::string(argv[0]));
for (size_t i = 1; argv[i] != NULL; ++i) {
gCmdLine->append(" ");
gCmdLine->append(argv[i]);
}
gProgramInvocationName.reset(new std::string(argv[0]));
const char* last_slash = strrchr(argv[0], '/');
gProgramInvocationShortName.reset(new std::string((last_slash != NULL) ? last_slash + 1
: argv[0]));
} else {
// TODO: fall back to /proc/self/cmdline when argv is NULL on Linux
gCmdLine.reset(new std::string("<unset>"));
}
const char* tags = getenv("ANDROID_LOG_TAGS");
if (tags == NULL) {
return;
}
std::vector<std::string> specs;
Split(tags, ' ', specs);
for (size_t i = 0; i < specs.size(); ++i) {
// "tag-pattern:[vdiwefs]"
std::string spec(specs[i]);
if (spec.size() == 3 && StartsWith(spec, "*:")) {
switch (spec[2]) {
case 'v':
gMinimumLogSeverity = VERBOSE;
continue;
case 'd':
gMinimumLogSeverity = DEBUG;
continue;
case 'i':
gMinimumLogSeverity = INFO;
continue;
case 'w':
gMinimumLogSeverity = WARNING;
continue;
case 'e':
gMinimumLogSeverity = ERROR;
continue;
case 'f':
gMinimumLogSeverity = FATAL;
continue;
// liblog will even suppress FATAL if you say 's' for silent, but that's crazy!
case 's':
gMinimumLogSeverity = FATAL;
continue;
}
}
LOG(FATAL) << "unsupported '" << spec << "' in ANDROID_LOG_TAGS (" << tags << ")";
}
}
LogMessageData::LogMessageData(const char* file, int line, LogSeverity severity, int error)
: file(file),
line_number(line),
severity(severity),
error(error) {
const char* last_slash = strrchr(file, '/');
file = (last_slash == NULL) ? file : last_slash + 1;
}
LogMessage::~LogMessage() {
if (data_->severity < gMinimumLogSeverity) {
return; // No need to format something we're not going to output.
}
// Finish constructing the message.
if (data_->error != -1) {
data_->buffer << ": " << strerror(data_->error);
}
std::string msg(data_->buffer.str());
// Do the actual logging with the lock held.
{
MutexLock mu(Thread::Current(), *Locks::logging_lock_);
if (msg.find('\n') == std::string::npos) {
LogLine(*data_, msg.c_str());
} else {
msg += '\n';
size_t i = 0;
while (i < msg.size()) {
size_t nl = msg.find('\n', i);
msg[nl] = '\0';
LogLine(*data_, &msg[i]);
i = nl + 1;
}
}
}
// Abort if necessary.
if (data_->severity == FATAL) {
Runtime::Abort();
}
}
} // namespace art
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