Merge remote branch 'origin/4.6' into qt-4.7-from-4.6

All EGL-related changes from 4.6 were discarded.

Conflicts:
	src/gui/egl/egl.pri
	src/gui/egl/qegl.cpp
	src/gui/egl/qegl_p.h
	src/gui/egl/qegl_stub.cpp
	src/gui/egl/qeglproperties_p.h
	src/gui/egl/qeglproperties_stub.cpp
	src/gui/gui.pro
	src/multimedia/multimedia/audio/qaudioinput_win32_p.h
	src/s60installs/bwins/QtGuiu.def
	src/s60installs/eabi/QtGuiu.def

7 files changed, 133 insertions, 57 deletions

diff --git a/src/corelib/codecs/qiconvcodec.cpp b/src/corelib/codecs/qiconvcodec.cpp
index 0fcdf96..44a0a01 100644
--- a/src/corelib/codecs/qiconvcodec.cpp
+++ b/src/corelib/codecs/qiconvcodec.cpp
@@ -168,7 +168,7 @@ Q_GLOBAL_STATIC(QThreadStorage<QIconvCodec::IconvState *>, toUnicodeState)
 QString QIconvCodec::convertToUnicode(const char* chars, int len, ConverterState *convState) const
 {
     if (utf16Codec == reinterpret_cast<QTextCodec *>(~0))
-        return QString::fromAscii(chars, len);
+        return QString::fromLatin1(chars, len);
 
     int invalidCount = 0;
     int remainingCount = 0;
@@ -207,9 +207,9 @@ QString QIconvCodec::convertToUnicode(const char* chars, int len, ConverterState
             static int reported = 0;
             if (!reported++) {
                 fprintf(stderr,
-                        "QIconvCodec::convertToUnicode: using ASCII for conversion, iconv_open failed\n");
+                        "QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv_open failed\n");
             }
-            return QString::fromAscii(chars, len);
+            return QString::fromLatin1(chars, len);
         }
 
         *pstate = new IconvState(cd);
@@ -273,14 +273,14 @@ QString QIconvCodec::convertToUnicode(const char* chars, int len, ConverterState
 
             // some other error
             // note, cannot use qWarning() since we are implementing the codecForLocale :)
-            perror("QIconvCodec::convertToUnicode: using ASCII for conversion, iconv failed");
+            perror("QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv failed");
 
             if (!convState) {
                 // reset state
                 iconv(state->cd, 0, &inBytesLeft, 0, &outBytesLeft);
             }
 
-            return QString::fromAscii(chars, len);
+            return QString::fromLatin1(chars, len);
         }
     } while (inBytesLeft != 0);
 
@@ -353,12 +353,12 @@ QByteArray QIconvCodec::convertFromUnicode(const QChar *uc, int len, ConverterSt
         state = new IconvState(QIconvCodec::createIconv_t(0, UTF16));
         if (state->cd == reinterpret_cast<iconv_t>(-1)) {
             if (!setByteOrder(state->cd)) {
-                perror("QIconvCodec::convertFromUnicode: using ASCII for conversion, iconv failed for BOM");
+                perror("QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv failed for BOM");
 
                 iconv_close(state->cd);
                 state->cd = reinterpret_cast<iconv_t>(-1);
 
-                return QString(uc, len).toAscii();
+                return QString(uc, len).toLatin1();
             }
         }
     }
@@ -366,9 +366,9 @@ QByteArray QIconvCodec::convertFromUnicode(const QChar *uc, int len, ConverterSt
         static int reported = 0;
         if (!reported++) {
             fprintf(stderr,
-                    "QIconvCodec::convertFromUnicode: using ASCII for conversion, iconv_open failed\n");
+                    "QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv_open failed\n");
         }
-        return QString(uc, len).toAscii();
+        return QString(uc, len).toLatin1();
     }
  
     size_t outBytesLeft = len;
@@ -425,12 +425,12 @@ QByteArray QIconvCodec::convertFromUnicode(const QChar *uc, int len, ConverterSt
             default:
                 {
                     // note, cannot use qWarning() since we are implementing the codecForLocale :)
-                    perror("QIconvCodec::convertFromUnicode: using ASCII for conversion, iconv failed");
+                    perror("QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv failed");
 
                     // reset to initial state
                     iconv(state->cd, 0, &inBytesLeft, 0, &outBytesLeft);
 
-                    return QString(uc, len).toAscii();
+                    return QString(uc, len).toLatin1();
                 }
             }
         }
diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp
index dfa2c17..373c0b4 100644
--- a/src/corelib/global/qglobal.cpp
+++ b/src/corelib/global/qglobal.cpp
@@ -2079,7 +2079,28 @@ static void mac_default_handler(const char *msg)
 }
 #endif // Q_CC_MWERKS && Q_OS_MACX
 
-
+#if !defined(Q_OS_WIN) && !defined(QT_NO_THREAD) && !defined(Q_OS_INTEGRITY) && !defined(Q_OS_QNX) && \
+    defined(_POSIX_THREAD_SAFE_FUNCTIONS) && _POSIX_VERSION >= 200112L
+namespace {
+    // There are two incompatible versions of strerror_r:
+    // a) the XSI/POSIX.1 version, which returns an int,
+    //    indicating success or not
+    // b) the GNU version, which returns a char*, which may or may not
+    //    be the beginning of the buffer we used
+    // The GNU libc manpage for strerror_r says you should use the the XSI
+    // version in portable code. However, it's impossible to do that if
+    // _GNU_SOURCE is defined so we use C++ overloading to decide what to do
+    // depending on the return type
+    static inline QString fromstrerror_helper(int, const QByteArray &buf)
+    {
+        return QString::fromLocal8Bit(buf);
+    }
+    static inline QString fromstrerror_helper(const char *str, const QByteArray &)
+    {
+        return QString::fromLocal8Bit(str);
+    }
+}
+#endif
 
 QString qt_error_string(int errorCode)
 {
@@ -2122,12 +2143,9 @@ QString qt_error_string(int errorCode)
 
         if (ret.isEmpty() && errorCode == ERROR_MOD_NOT_FOUND)
             ret = QString::fromLatin1("The specified module could not be found.");
-
 #elif !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && _POSIX_VERSION >= 200112L && !defined(Q_OS_INTEGRITY) && !defined(Q_OS_QNX)
-
         QByteArray buf(1024, '\0');
-        strerror_r(errorCode, buf.data(), buf.size());
-        ret = QString::fromLocal8Bit(buf.constData());
+        ret = fromstrerror_helper(strerror_r(errorCode, buf.data(), buf.size()), buf);
 #else
         ret = QString::fromLocal8Bit(strerror(errorCode));
 #endif
diff --git a/src/corelib/kernel/qeventdispatcher_symbian.cpp b/src/corelib/kernel/qeventdispatcher_symbian.cpp
index 3b86e89..4566ec0 100644
--- a/src/corelib/kernel/qeventdispatcher_symbian.cpp
+++ b/src/corelib/kernel/qeventdispatcher_symbian.cpp
@@ -43,7 +43,6 @@
 #include <private/qthread_p.h>
 #include <qcoreapplication.h>
 #include <private/qcoreapplication_p.h>
-#include <qdatetime.h>
 
 #include <unistd.h>
 #include <errno.h>
@@ -636,6 +635,74 @@ void QSocketActiveObject::deleteLater()
     }
 }
 
+#ifdef QT_SYMBIAN_PRIORITY_DROP
+class QIdleDetectorThread
+{
+public:
+    QIdleDetectorThread()
+    : m_state(STATE_RUN), m_stop(false)
+    {
+        qt_symbian_throwIfError(m_lock.CreateLocal());
+        TInt err = m_idleDetectorThread.Create(KNullDesC(), &idleDetectorThreadFunc, 1024, &User::Allocator(), this);
+        if (err != KErrNone)
+            m_lock.Close();
+        qt_symbian_throwIfError(err);
+        m_idleDetectorThread.SetPriority(EPriorityAbsoluteBackgroundNormal);
+        m_idleDetectorThread.Resume();
+    }
+
+    ~QIdleDetectorThread()
+    {
+        // close down the idle thread because if corelib is loaded temporarily, this would leak threads into the host process
+        m_stop = true;
+        m_lock.Signal();
+        m_idleDetectorThread.SetPriority(EPriorityNormal);
+        TRequestStatus s;
+        m_idleDetectorThread.Logon(s);
+        User::WaitForRequest(s);
+        m_idleDetectorThread.Close();
+        m_lock.Close();
+    }
+
+    void kick()
+    {
+        m_state = STATE_KICKED;
+        m_lock.Signal();
+    }
+
+    bool hasRun()
+    {
+        return m_state == STATE_RUN;
+    }
+
+private:
+    static TInt idleDetectorThreadFunc(TAny* self)
+    {
+        static_cast<QIdleDetectorThread*>(self)->IdleLoop();
+        return KErrNone;
+    }
+
+    void IdleLoop()
+    {
+        while (!m_stop) {
+            m_lock.Wait();
+            m_state = STATE_RUN;
+        }
+    }
+
+private:
+    enum IdleStates {STATE_KICKED, STATE_RUN} m_state;
+    bool m_stop;
+    RThread m_idleDetectorThread;
+    RFastLock m_lock;
+};
+
+Q_GLOBAL_STATIC(QIdleDetectorThread, idleDetectorThread);
+
+const int maxBusyTime = 2000; // maximum time we allow idle detector to be blocked before worrying, in milliseconds
+const int baseDelay = 1000; // minimum delay time used when backing off to allow idling, in microseconds
+#endif
+
 QEventDispatcherSymbian::QEventDispatcherSymbian(QObject *parent)
     : QAbstractEventDispatcher(parent),
       m_selectThread(0),
@@ -647,11 +714,15 @@ QEventDispatcherSymbian::QEventDispatcherSymbian(QObject *parent)
       m_iterationCount(0),
       m_noSocketEvents(false)
 {
+#ifdef QT_SYMBIAN_PRIORITY_DROP
+    m_delay = baseDelay;
+    m_avgEventTime = 0;
+    idleDetectorThread();
+#endif
 }
 
 QEventDispatcherSymbian::~QEventDispatcherSymbian()
 {
-    m_processHandle.Close();
 }
 
 void QEventDispatcherSymbian::startingUp()
@@ -720,23 +791,7 @@ bool QEventDispatcherSymbian::processEvents ( QEventLoop::ProcessEventsFlags fla
         m_interrupt = false;
 
 #ifdef QT_SYMBIAN_PRIORITY_DROP
-        /*
-         * This QTime variable is used to measure the time it takes to finish
-         * the event loop. If we take too long in the loop, other processes
-         * may be starved and killed. After the first event has completed, we
-         * take the current time, and if the remaining events take longer than
-         * a preset time, we temporarily lower the priority to force a context
-         * switch. For applications that do not take unecessarily long in the
-         * event loop, the priority will not be altered.
-         */
-        QTime time;
-        enum {
-            FirstRun,
-            SubsequentRun,
-            TimeStarted
-        } timeState = FirstRun;
-
-        TProcessPriority priority;
+        QTime eventTimer;
 #endif
 
         while (1) {
@@ -752,10 +807,18 @@ bool QEventDispatcherSymbian::processEvents ( QEventLoop::ProcessEventsFlags fla
             }
 
 #ifdef QT_SYMBIAN_PRIORITY_DROP
-            if (timeState == SubsequentRun) {
-                time.start();
-                timeState = TimeStarted;
+            if (idleDetectorThread()->hasRun()) {
+                if (m_delay > baseDelay)
+                    m_delay -= baseDelay;
+                m_lastIdleRequestTimer.start();
+                idleDetectorThread()->kick();
+            } else if (m_lastIdleRequestTimer.elapsed() > maxBusyTime) {
+                User::AfterHighRes(m_delay);
+                // allow delay to be up to 1/4 of execution time
+                if (!idleDetectorThread()->hasRun() && m_delay*3 < m_avgEventTime)
+                    m_delay += baseDelay;
             }
+            eventTimer.start();
 #endif
 
             TInt error;
@@ -765,6 +828,12 @@ bool QEventDispatcherSymbian::processEvents ( QEventLoop::ProcessEventsFlags fla
                 CActiveScheduler::Current()->Error(error);
             }
 
+#ifdef QT_SYMBIAN_PRIORITY_DROP
+            int eventDur = eventTimer.elapsed()*1000;
+            // average is calcualted as a 5% decaying exponential average
+            m_avgEventTime = (m_avgEventTime * 95 + eventDur * 5) / 100;
+#endif
+
             if (!handledSymbianEvent) {
                 qFatal("QEventDispatcherSymbian::processEvents(): Caught Symbian stray signal");
             }
@@ -773,20 +842,6 @@ bool QEventDispatcherSymbian::processEvents ( QEventLoop::ProcessEventsFlags fla
                 break;
             }
             block = false;
-#ifdef QT_SYMBIAN_PRIORITY_DROP
-            if (timeState == TimeStarted && time.elapsed() > 100) {
-                priority = m_processHandle.Priority();
-                m_processHandle.SetPriority(EPriorityBackground);
-                time.start();
-                // Slight chance of race condition in the next lines, but nothing fatal
-                // will happen, just wrong priority.
-                if (m_processHandle.Priority() == EPriorityBackground) {
-                    m_processHandle.SetPriority(priority);
-                }
-            }
-            if (timeState == FirstRun)
-                timeState = SubsequentRun;
-#endif
         };
 
         emit awake();
diff --git a/src/corelib/kernel/qeventdispatcher_symbian_p.h b/src/corelib/kernel/qeventdispatcher_symbian_p.h
index 5281199..05758ca 100644
--- a/src/corelib/kernel/qeventdispatcher_symbian_p.h
+++ b/src/corelib/kernel/qeventdispatcher_symbian_p.h
@@ -62,6 +62,7 @@
 #include <qmutex.h>
 #include <qwaitcondition.h>
 #include <qsocketnotifier.h>
+#include <qdatetime.h>
 
 #include <e32base.h>
 
@@ -280,7 +281,9 @@ private:
 
     QList<QActiveObject *> m_deferredActiveObjects;
 
-    RProcess m_processHandle;
+    int m_delay;
+    int m_avgEventTime;
+    QTime m_lastIdleRequestTimer;
 };
 
 #ifdef QT_DEBUG
diff --git a/src/corelib/tools/qbytedata_p.h b/src/corelib/tools/qbytedata_p.h
index c48bb33..08249e0 100644
--- a/src/corelib/tools/qbytedata_p.h
+++ b/src/corelib/tools/qbytedata_p.h
@@ -84,7 +84,7 @@ public:
     }
 
 
-    inline void append(QByteArray& bd)
+    inline void append(const QByteArray& bd)
     {
         if (bd.isEmpty())
             return;
diff --git a/src/corelib/xml/qxmlstream.g b/src/corelib/xml/qxmlstream.g
index 1b882e0..e91408f 100644
--- a/src/corelib/xml/qxmlstream.g
+++ b/src/corelib/xml/qxmlstream.g
@@ -748,7 +748,7 @@ bool QXmlStreamReaderPrivate::parse()
             state_stack[tos] = 0;
             return true;
         } else if (act > 0) {
-            if (++tos == stack_size)
+            if (++tos == stack_size-1)
                 reallocateStack();
 
             Value &val = sym_stack[tos];
diff --git a/src/corelib/xml/qxmlstream_p.h b/src/corelib/xml/qxmlstream_p.h
index ac421cf..f6ab3a1 100644
--- a/src/corelib/xml/qxmlstream_p.h
+++ b/src/corelib/xml/qxmlstream_p.h
@@ -61,7 +61,7 @@
 class QXmlStreamReader_Table
 {
 public:
-  enum {
+  enum VariousConstants {
     EOF_SYMBOL = 0,
     AMPERSAND = 5,
     ANY = 41,
@@ -1242,7 +1242,7 @@ bool QXmlStreamReaderPrivate::parse()
             state_stack[tos] = 0;
             return true;
         } else if (act > 0) {
-            if (++tos == stack_size)
+            if (++tos == stack_size-1)
                 reallocateStack();
 
             Value &val = sym_stack[tos];