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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <private/qcore_mac_p.h>
#include <new>
#include "qhash.h"
#include "qpair.h"
#include "qmutex.h"
#include "qvarlengtharray.h"
QT_BEGIN_NAMESPACE
QCFString::operator QString() const
{
if (string.isEmpty() && value)
const_cast<QCFString*>(this)->string = QString::fromCFString(value);
return string;
}
QCFString::operator CFStringRef() const
{
if (!value)
const_cast<QCFString*>(this)->value = string.toCFString();
return value;
}
// --------------------------------------------------------------------------
#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
bool AppleUnifiedLogger::messageHandler(QtMsgType msgType, const QMessageLogContext &context,
const QString &message, const QString &optionalSubsystem)
{
QString subsystem = optionalSubsystem;
if (subsystem.isNull()) {
static QString bundleIdentifier = []() {
if (CFBundleRef bundle = CFBundleGetMainBundle()) {
if (CFStringRef identifier = CFBundleGetIdentifier(bundle))
return QString::fromCFString(identifier);
}
return QString();
}();
subsystem = bundleIdentifier;
}
const bool isDefault = !context.category || !strcmp(context.category, "default");
os_log_t log = isDefault ? OS_LOG_DEFAULT :
cachedLog(subsystem, QString::fromLatin1(context.category));
os_log_type_t logType = logTypeForMessageType(msgType);
if (!os_log_type_enabled(log, logType))
return false;
// Logging best practices says we should not include symbolication
// information or source file line numbers in messages, as the system
// will automatically captures this information. In our case, what
// the system captures is the call to os_log_with_type below, which
// isn't really useful, but we still don't want to include the context's
// info, as that would clutter the logging output. See rdar://35958308.
// The format must be a string constant, so we can't pass on the
// message. This means we won't be able to take advantage of the
// unified logging's custom format specifiers such as %{BOOL}d.
// We use the 'public' format specifier to prevent the logging
// system from redacting our log message.
os_log_with_type(log, logType, "%{public}s", qPrintable(message));
// When running under Xcode or LLDB, one or more of these variables will
// be set, which triggers libsystem_trace.dyld to log messages to stderr
// as well, via_os_log_impl_mirror_to_stderr. Un-setting these variables
// is not an option, as that would silence normal NSLog or os_log calls,
// so instead we skip our own stderr output. See rdar://36919139.
static bool mirroredToStderr = qEnvironmentVariableIsSet("OS_ACTIVITY_DT_MODE")
|| qEnvironmentVariableIsSet("ACTIVITY_LOG_STDERR")
|| qEnvironmentVariableIsSet("CFLOG_FORCE_STDERR");
return mirroredToStderr;
}
os_log_type_t AppleUnifiedLogger::logTypeForMessageType(QtMsgType msgType)
{
switch (msgType) {
case QtDebugMsg: return OS_LOG_TYPE_DEBUG;
case QtInfoMsg: return OS_LOG_TYPE_INFO;
case QtWarningMsg: return OS_LOG_TYPE_DEFAULT;
case QtCriticalMsg: return OS_LOG_TYPE_ERROR;
case QtFatalMsg: return OS_LOG_TYPE_FAULT;
}
return OS_LOG_TYPE_DEFAULT;
}
os_log_t AppleUnifiedLogger::cachedLog(const QString &subsystem, const QString &category)
{
static QBasicMutex mutex;
QMutexLocker locker(&mutex);
static QHash<QPair<QString, QString>, os_log_t> logs;
const auto cacheKey = qMakePair(subsystem, category);
os_log_t log = logs.value(cacheKey);
if (!log) {
log = os_log_create(subsystem.toLatin1().constData(),
category.toLatin1().constData());
logs.insert(cacheKey, log);
// Technically we should release the os_log_t resource when done
// with it, but since we don't know when a category is disabled
// we keep all cached os_log_t instances until shutdown, where
// the OS will clean them up for us.
}
return log;
}
#endif // QT_USE_APPLE_UNIFIED_LOGGING
// --------------------------------------------------------------------------
QT_END_NAMESPACE
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