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Initialize QLoggingRegistry rules on first use

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Allows categorized logging before QCoreApplication has been created,
which otherwise would silently fail to output anything because the
category would never be enabled, despite QT_LOGGING_RULES being set.

Change-Id: I1861e5366ea980dff2ffa753b137276c77278eee
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
This commit is contained in:
Tor Arne Vestbø 2017-04-14 15:13:28 +02:00
parent ea18eec931
commit fa2a653b3b
4 changed files with 21 additions and 10 deletions
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3
src/corelib/io/qloggingregistry.cpp
View File

@ -255,6 +255,7 @@ void QLoggingSettingsParser::parseNextLine(QStringRef line)
QLoggingRegistry::QLoggingRegistry()
: categoryFilter(defaultCategoryFilter)
{
initalizeRules(); // Init on first use
}
static bool qtLoggingDebug()
@ -283,7 +284,7 @@ static QVector<QLoggingRule> loadRulesFromFile(const QString &filePath)
Initializes the rules database by loading
$QT_LOGGING_CONF, $QT_LOGGING_RULES, and .config/QtProject/qtlogging.ini.
*/
void QLoggingRegistry::init()
void QLoggingRegistry::initalizeRules()
{
QVector<QLoggingRule> er, qr, cr;
// get rules from environment

2
src/corelib/io/qloggingregistry_p.h
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@ -113,7 +113,7 @@ class Q_AUTOTEST_EXPORT QLoggingRegistry
public:
QLoggingRegistry();
void init();
void initalizeRules();
void registerCategory(QLoggingCategory *category, QtMsgType enableForLevel);
void unregisterCategory(QLoggingCategory *category);

2
src/corelib/kernel/qcoreapplication.cpp
View File

@ -776,8 +776,6 @@ void QCoreApplicationPrivate::init()
if (!coreappdata()->applicationVersionSet)
coreappdata()->applicationVersion = appVersion();
QLoggingRegistry::instance()->init();
#if QT_CONFIG(library)
// Reset the lib paths, so that they will be recomputed, taking the availability of argv[0]
// into account. If necessary, recompute right away and replay the manual changes on top of the

24
tests/auto/corelib/io/qloggingregistry/tst_qloggingregistry.cpp
View File

@ -197,10 +197,22 @@ private slots:
// Check whether QT_LOGGING_CONF is picked up from environment
//
qputenv("QT_LOGGING_CONF", QFINDTESTDATA("qtlogging.ini").toLocal8Bit());
Q_ASSERT(!qApp); // Rules should not require an app to resolve
QLoggingRegistry registry;
registry.init();
qputenv("QT_LOGGING_RULES", "qt.foo.bar=true");
QLoggingCategory qtEnabledByLoggingRule("qt.foo.bar");
QCOMPARE(qtEnabledByLoggingRule.isDebugEnabled(), true);
QLoggingCategory qtDisabledByDefault("qt.foo.baz");
QCOMPARE(qtDisabledByDefault.isDebugEnabled(), false);
QLoggingRegistry &registry = *QLoggingRegistry::instance();
QCOMPARE(registry.ruleSets[QLoggingRegistry::ApiRules].size(), 0);
QCOMPARE(registry.ruleSets[QLoggingRegistry::ConfigRules].size(), 0);
QCOMPARE(registry.ruleSets[QLoggingRegistry::EnvironmentRules].size(), 1);
qunsetenv("QT_LOGGING_RULES");
qputenv("QT_LOGGING_CONF", QFINDTESTDATA("qtlogging.ini").toLocal8Bit());
registry.initalizeRules();
QCOMPARE(registry.ruleSets[QLoggingRegistry::ApiRules].size(), 0);
QCOMPARE(registry.ruleSets[QLoggingRegistry::ConfigRules].size(), 0);
@ -208,7 +220,7 @@ private slots:
// check that QT_LOGGING_RULES take precedence
qputenv("QT_LOGGING_RULES", "Digia.*=true");
registry.init();
registry.initalizeRules();
QCOMPARE(registry.ruleSets[QLoggingRegistry::EnvironmentRules].size(), 2);
QCOMPARE(registry.ruleSets[QLoggingRegistry::EnvironmentRules].at(1).enabled, true);
}
@ -234,7 +246,7 @@ private slots:
file.close();
QLoggingRegistry registry;
registry.init();
registry.initalizeRules();
QCOMPARE(registry.ruleSets[QLoggingRegistry::ConfigRules].size(), 1);
// remove file again
@ -300,6 +312,6 @@ private slots:
}
};
QTEST_MAIN(tst_QLoggingRegistry)
QTEST_APPLESS_MAIN(tst_QLoggingRegistry)
#include "tst_qloggingregistry.moc"