qloggingcategory.cpp

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#include "qloggingcategory.h"
#include "qloggingregistry_p.h"
 
QT_BEGIN_NAMESPACE
 
const char qtDefaultCategoryName[] = "default";
 
Q_GLOBAL_STATIC_WITH_ARGS(QLoggingCategory, qtDefaultCategory,
                          (qtDefaultCategoryName))
 
#ifndef Q_ATOMIC_INT8_IS_SUPPORTED
static void setBoolLane(QBasicAtomicInt *atomic, bool enable, int shift)
{
    const int bit = 1 << shift;
 
    if (enable)
        atomic->fetchAndOrRelaxed(bit);
    else
        atomic->fetchAndAndRelaxed(~bit);
}
#endif
 
QLoggingCategory::QLoggingCategory(const char *category, QtMsgType enableForLevel)
    : d(nullptr),
      name(nullptr)
{
    init(category, enableForLevel);
}
 
void QLoggingCategory::init(const char *category, QtMsgType severityLevel)
{
    enabled.storeRelaxed(0x01010101);   // enabledDebug = enabledWarning = enabledCritical = true;
 
    if (category)
        name = category;
    else
        name = qtDefaultCategoryName;
 
    if (QLoggingRegistry *reg = QLoggingRegistry::instance())
        reg->registerCategory(this, severityLevel);
}
 
QLoggingCategory::~QLoggingCategory()
{
    if (QLoggingRegistry *reg = QLoggingRegistry::instance())
        reg->unregisterCategory(this);
}
 
bool QLoggingCategory::isEnabled(QtMsgType msgtype) const
{
    switch (msgtype) {
    case QtDebugMsg: return isDebugEnabled();
    case QtInfoMsg: return isInfoEnabled();
    case QtWarningMsg: return isWarningEnabled();
    case QtCriticalMsg: return isCriticalEnabled();
    case QtFatalMsg: return true;
    }
    return false;
}
 
void QLoggingCategory::setEnabled(QtMsgType type, bool enable)
{
    switch (type) {
#ifdef Q_ATOMIC_INT8_IS_SUPPORTED
    case QtDebugMsg: bools.enabledDebug.storeRelaxed(enable); break;
    case QtInfoMsg: bools.enabledInfo.storeRelaxed(enable); break;
    case QtWarningMsg: bools.enabledWarning.storeRelaxed(enable); break;
    case QtCriticalMsg: bools.enabledCritical.storeRelaxed(enable); break;
#else
    case QtDebugMsg: setBoolLane(&enabled, enable, DebugShift); break;
    case QtInfoMsg: setBoolLane(&enabled, enable, InfoShift); break;
    case QtWarningMsg: setBoolLane(&enabled, enable, WarningShift); break;
    case QtCriticalMsg: setBoolLane(&enabled, enable, CriticalShift); break;
#endif
    case QtFatalMsg: break;
    }
}
 
QLoggingCategory *QLoggingCategory::defaultCategory()
{
    return qtDefaultCategory();
}
 
QLoggingCategory::CategoryFilter
QLoggingCategory::installFilter(QLoggingCategory::CategoryFilter filter)
{
    return QLoggingRegistry::instance()->installFilter(filter);
}
 
void QLoggingCategory::setFilterRules(const QString &rules)
{
    QLoggingRegistry::instance()->setApiRules(rules);
}
 
QT_END_NAMESPACE