Revert "Add tracing to logging framework"

The tracing API still misses some real-world exposure. Let's
re-do this in dev to have more time.

This reverts parts of following commits:

466e0dff4bb686e51d0ab3f905631fcb7dd8bfef
7a47aebe9ed41d6cd9c9bcd45758d4d553668e99
a652bab6a7ebf78b029fea95c2801deb6f4f524a
8f0654ceb878b6c8a08c7f5b790027c26e007c13
4162522edd9d31bd2798ab37f083adff818d886e
32f27b4367c4e042a3f0cda671579494e31c1d69
9ff81bdc1ab4e3d14914192cd63ae625a507fe90

Change-Id: If97340c37b8b3363f597683336a8390d5ff386f1
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>

1 files changed, 2 insertions, 72 deletions

diff --git a/src/corelib/io/qloggingcategory.h b/src/corelib/io/qloggingcategory.h
index da96dee12e..15c0519827 100644
--- a/src/corelib/io/qloggingcategory.h
+++ b/src/corelib/io/qloggingcategory.h
@@ -44,14 +44,9 @@
 
 #include <QtCore/qglobal.h>
 #include <QtCore/qdebug.h>
-#include <QtCore/qvector.h>
 
 QT_BEGIN_NAMESPACE
 
-class QTracer;
-class QTraceGuard;
-class QLoggingCategoryPrivate;
-
 class Q_CORE_EXPORT QLoggingCategory
 {
     Q_DISABLE_COPY(QLoggingCategory)
@@ -65,7 +60,6 @@ public:
     bool isDebugEnabled() const { return enabledDebug; }
     bool isWarningEnabled() const { return enabledWarning; }
     bool isCriticalEnabled() const { return enabledCritical; }
-    bool isTraceEnabled() const { return enabledTrace; }
 
     const char *categoryName() const { return name; }
 
@@ -80,66 +74,13 @@ public:
     static void setFilterRules(const QString &rules);
 
 private:
-    friend class QLoggingCategoryPrivate;
-    friend class QLoggingRegistry;
-    friend class QTraceGuard;
-    friend class QTracer;
-
-    QLoggingCategoryPrivate *d;
+    void *d; // reserved for future use
     const char *name;
 
     bool enabledDebug;
     bool enabledWarning;
     bool enabledCritical;
-    bool enabledTrace;
-    // reserve space for future use
-    bool placeholder1;
-    bool placeholder2;
-    bool placeholder3;
-};
-
-class Q_CORE_EXPORT QTracer
-{
-    Q_DISABLE_COPY(QTracer)
-public:
-    QTracer() {}
-    virtual ~QTracer() {}
-
-    void addToCategory(QLoggingCategory &category);
-
-    virtual void start() {}
-    virtual void end() {}
-    virtual void record(int) {}
-    virtual void record(const char *) {}
-    virtual void record(const QVariant &) {}
-};
-
-class Q_CORE_EXPORT QTraceGuard
-{
-    Q_DISABLE_COPY(QTraceGuard)
-public:
-    QTraceGuard(QLoggingCategory &category)
-    {
-        target = category.isTraceEnabled() ? &category : 0;
-        if (target)
-            start();
-    }
-
-    ~QTraceGuard()
-    {
-        if (target)
-            end();
-    }
-
-    QTraceGuard &operator<<(int msg);
-    QTraceGuard &operator<<(const char *msg);
-    QTraceGuard &operator<<(const QVariant &msg);
-
-private:
-    void start();
-    void end();
-
-    QLoggingCategory *target;
+    bool placeholder[5]; // reserve for future use
 };
 
 #define Q_DECLARE_LOGGING_CATEGORY(name) \
@@ -162,17 +103,6 @@ private:
 #define qCCritical(category) \
     for (bool enabled = category().isCriticalEnabled(); enabled; enabled = false) \
         QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).critical()
-#define qCTrace(category) \
-    for (bool enabled = category.isTraceEnabled(); Q_UNLIKELY(enabled); enabled = false) \
-        QTraceGuard(category)
-
-
-#define Q_TRACE_GUARD_NAME_HELPER(line) qTraceGuard ## line
-#define Q_TRACE_GUARD_NAME(line) Q_TRACE_GUARD_NAME_HELPER(line)
-
-#define qCTraceGuard(category) \
-    QTraceGuard Q_TRACE_GUARD_NAME(__LINE__)(category);
-
 
 #if defined(QT_NO_DEBUG_OUTPUT)
 #  undef qCDebug