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-rw-r--r--src/corelib/io/qloggingcategory.h142
1 files changed, 62 insertions, 80 deletions
diff --git a/src/corelib/io/qloggingcategory.h b/src/corelib/io/qloggingcategory.h
index 6e74a8c3be..7c32beea1a 100644
--- a/src/corelib/io/qloggingcategory.h
+++ b/src/corelib/io/qloggingcategory.h
@@ -1,41 +1,5 @@
-/****************************************************************************
-**
-** 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.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QLOGGINGCATEGORY_H
#define QLOGGINGCATEGORY_H
@@ -55,17 +19,11 @@ public:
bool isEnabled(QtMsgType type) const;
void setEnabled(QtMsgType type, bool enable);
-#ifdef Q_ATOMIC_INT8_IS_SUPPORTED
bool isDebugEnabled() const { return bools.enabledDebug.loadRelaxed(); }
bool isInfoEnabled() const { return bools.enabledInfo.loadRelaxed(); }
bool isWarningEnabled() const { return bools.enabledWarning.loadRelaxed(); }
bool isCriticalEnabled() const { return bools.enabledCritical.loadRelaxed(); }
-#else
- bool isDebugEnabled() const { return enabled.loadRelaxed() >> DebugShift & 1; }
- bool isInfoEnabled() const { return enabled.loadRelaxed() >> InfoShift & 1; }
- bool isWarningEnabled() const { return enabled.loadRelaxed() >> WarningShift & 1; }
- bool isCriticalEnabled() const { return enabled.loadRelaxed() >> CriticalShift & 1; }
-#endif
+
const char *categoryName() const { return name; }
// allows usage of both factory method and variable in qCX macros
@@ -85,19 +43,11 @@ private:
Q_DECL_UNUSED_MEMBER void *d; // reserved for future use
const char *name;
-#ifdef Q_BIG_ENDIAN
- enum { DebugShift = 0, WarningShift = 8, CriticalShift = 16, InfoShift = 24 };
-#else
- enum { DebugShift = 24, WarningShift = 16, CriticalShift = 8, InfoShift = 0};
-#endif
-
struct AtomicBools {
-#ifdef Q_ATOMIC_INT8_IS_SUPPORTED
QBasicAtomicInteger<bool> enabledDebug;
QBasicAtomicInteger<bool> enabledWarning;
QBasicAtomicInteger<bool> enabledCritical;
QBasicAtomicInteger<bool> enabledInfo;
-#endif
};
union {
AtomicBools bools;
@@ -106,8 +56,58 @@ private:
Q_DECL_UNUSED_MEMBER bool placeholder[4]; // reserved for future use
};
+namespace { // allow different TUs to have different QT_NO_xxx_OUTPUT
+template <QtMsgType Which> struct QLoggingCategoryMacroHolder
+{
+ static const bool IsOutputEnabled;
+ const QLoggingCategory *category = nullptr;
+ bool control = false;
+ explicit QLoggingCategoryMacroHolder(const QLoggingCategory &cat)
+ {
+ if (IsOutputEnabled)
+ init(cat);
+ }
+ void init(const QLoggingCategory &cat) noexcept
+ {
+ category = &cat;
+ // same as:
+ // control = cat.isEnabled(Which);
+ // but without an out-of-line call
+ if constexpr (Which == QtDebugMsg) {
+ control = cat.isDebugEnabled();
+ } else if constexpr (Which == QtInfoMsg) {
+ control = cat.isInfoEnabled();
+ } else if constexpr (Which == QtWarningMsg) {
+ control = cat.isWarningEnabled();
+ } else if constexpr (Which == QtCriticalMsg) {
+ control = cat.isCriticalEnabled();
+ } else if constexpr (Which == QtFatalMsg) {
+ control = true;
+ } else {
+ static_assert(QtPrivate::value_dependent_false<Which>(), "Unknown Qt message type");
+ }
+ }
+ const char *name() const { return category->categoryName(); }
+ explicit operator bool() const { return Q_UNLIKELY(control); }
+};
+
+template <QtMsgType Which> const bool QLoggingCategoryMacroHolder<Which>::IsOutputEnabled = true;
+#if defined(QT_NO_DEBUG_OUTPUT)
+template <> const bool QLoggingCategoryMacroHolder<QtDebugMsg>::IsOutputEnabled = false;
+#endif
+#if defined(QT_NO_INFO_OUTPUT)
+template <> const bool QLoggingCategoryMacroHolder<QtInfoMsg>::IsOutputEnabled = false;
+#endif
+#if defined(QT_NO_WARNING_OUTPUT)
+template <> const bool QLoggingCategoryMacroHolder<QtWarningMsg>::IsOutputEnabled = false;
+#endif
+} // unnamed namespace
+
#define Q_DECLARE_LOGGING_CATEGORY(name) \
- extern const QLoggingCategory &name();
+ const QLoggingCategory &name();
+
+#define Q_DECLARE_EXPORTED_LOGGING_CATEGORY(name, export_macro) \
+ export_macro Q_DECLARE_LOGGING_CATEGORY(name)
#define Q_LOGGING_CATEGORY(name, ...) \
const QLoggingCategory &name() \
@@ -116,33 +116,15 @@ private:
return category; \
}
-#if !defined(QT_NO_DEBUG_OUTPUT)
-# define qCDebug(category, ...) \
- for (bool qt_category_enabled = category().isDebugEnabled(); qt_category_enabled; qt_category_enabled = false) \
- QMessageLogger(QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC, category().categoryName()).debug(__VA_ARGS__)
-#else
-# define qCDebug(category, ...) QT_NO_QDEBUG_MACRO()
-#endif
-
-#if !defined(QT_NO_INFO_OUTPUT)
-# define qCInfo(category, ...) \
- for (bool qt_category_enabled = category().isInfoEnabled(); qt_category_enabled; qt_category_enabled = false) \
- QMessageLogger(QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC, category().categoryName()).info(__VA_ARGS__)
-#else
-# define qCInfo(category, ...) QT_NO_QDEBUG_MACRO()
-#endif
-
-#if !defined(QT_NO_WARNING_OUTPUT)
-# define qCWarning(category, ...) \
- for (bool qt_category_enabled = category().isWarningEnabled(); qt_category_enabled; qt_category_enabled = false) \
- QMessageLogger(QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC, category().categoryName()).warning(__VA_ARGS__)
-#else
-# define qCWarning(category, ...) QT_NO_QDEBUG_MACRO()
-#endif
+#define QT_MESSAGE_LOGGER_COMMON(category, level) \
+ for (QLoggingCategoryMacroHolder<level> qt_category((category)()); qt_category; qt_category.control = false) \
+ QMessageLogger(QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC, qt_category.name())
-#define qCCritical(category, ...) \
- for (bool qt_category_enabled = category().isCriticalEnabled(); qt_category_enabled; qt_category_enabled = false) \
- QMessageLogger(QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC, category().categoryName()).critical(__VA_ARGS__)
+#define qCDebug(category, ...) QT_MESSAGE_LOGGER_COMMON(category, QtDebugMsg).debug(__VA_ARGS__)
+#define qCInfo(category, ...) QT_MESSAGE_LOGGER_COMMON(category, QtInfoMsg).info(__VA_ARGS__)
+#define qCWarning(category, ...) QT_MESSAGE_LOGGER_COMMON(category, QtWarningMsg).warning(__VA_ARGS__)
+#define qCCritical(category, ...) QT_MESSAGE_LOGGER_COMMON(category, QtCriticalMsg).critical(__VA_ARGS__)
+#define qCFatal(category, ...) QT_MESSAGE_LOGGER_COMMON(category, QtFatalMsg).fatal(__VA_ARGS__)
QT_END_NAMESPACE
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 00:22:23 +0000