qglobal.cpp

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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qplatformdefs.h"
#include "qstring.h"
#include "qvector.h"
#include "qlist.h"
#include "qthreadstorage.h"
#include "qdir.h"
#include "qstringlist.h"
#include "qdatetime.h"

#ifndef QT_NO_QOBJECT
#include <private/qthread_p.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <stdarg.h>
#include <string.h>

#ifndef QT_NO_EXCEPTIONS
#  include <string>
#  include <exception>
#endif

#if !defined(Q_OS_WINCE)
#  include <errno.h>
#  if defined(Q_CC_MSVC)
#    include <crtdbg.h>
#  endif
#endif

#if defined(Q_OS_VXWORKS) && defined(_WRS_KERNEL)
#  include <envLib.h>
#endif

#if defined(Q_OS_MACX) && !defined(Q_OS_IOS)
#include <CoreServices/CoreServices.h>
#endif

#ifdef QT_USE_SLOG2
#include <slog2.h>
#endif


#if defined(Q_OS_SYMBIAN)
#include <e32def.h>
#include <e32debug.h>
#include <f32file.h>
#include <e32math.h>
# include "private/qcore_symbian_p.h"

_LIT(qt_S60Filter, "Series60v?.*.sis");
_LIT(qt_symbianSystemInstallDir, "z:\\system\\install\\");
#endif

QT_BEGIN_NAMESPACE


const char *qVersion()
{
    return QT_VERSION_STR;
}

bool qSharedBuild()
{
#ifdef QT_SHARED
    return true;
#else
    return false;
#endif
}

/*****************************************************************************
  System detection routines
 *****************************************************************************/

#if defined(QT_BUILD_QMAKE)
// needed to bootstrap qmake
static const unsigned int qt_one = 1;
const int QSysInfo::ByteOrder = ((*((unsigned char *) &qt_one) == 0) ? BigEndian : LittleEndian);
#endif

#if !defined(QWS) && defined(Q_OS_MAC)

QT_BEGIN_INCLUDE_NAMESPACE
#include "private/qcore_mac_p.h"
#include "qnamespace.h"
QT_END_INCLUDE_NAMESPACE

static QSysInfo::MacVersion macVersion()
{
#if !defined(Q_OS_IOS)
    SInt32 gestalt_version;
    if (Gestalt(gestaltSystemVersion, &gestalt_version) == noErr) {
        return QSysInfo::MacVersion(((gestalt_version & 0x00F0) >> 4) + 2);
    }
#endif
    return QSysInfo::MV_Unknown;
}
const QSysInfo::MacVersion QSysInfo::MacintoshVersion = macVersion();

#elif defined(Q_OS_WIN32) || defined(Q_OS_CYGWIN) || defined(Q_OS_WINCE)

QT_BEGIN_INCLUDE_NAMESPACE
#include "qt_windows.h"
QT_END_INCLUDE_NAMESPACE

static inline OSVERSIONINFO winOsVersion()
{
    OSVERSIONINFO result = { sizeof(OSVERSIONINFO), 0, 0, 0, 0, {'\0'}};
    // GetVersionEx() has been deprecated in Windows 8.1 and will return
    // only Windows 8 from that version on.
#  if defined(_MSC_VER) && _MSC_VER >= 1800
#    pragma warning( push )
#    pragma warning( disable : 4996 )
#  endif
    GetVersionEx(&result);
#  if defined(_MSC_VER) && _MSC_VER >= 1800
#    pragma warning( pop )
#  endif
#  ifndef Q_OS_WINCE
    if (result.dwMajorVersion == 6 && result.dwMinorVersion == 2) {
        // This could be Windows 8.1 or higher. Note that as of Windows 9,
        // the major version needs to be checked as well.
        DWORDLONG conditionMask = 0;
        VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
        VER_SET_CONDITION(conditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
        VER_SET_CONDITION(conditionMask, VER_PLATFORMID, VER_EQUAL);
        OSVERSIONINFOEX checkVersion = { sizeof(OSVERSIONINFOEX), result.dwMajorVersion, result.dwMinorVersion,
                                         result.dwBuildNumber, result.dwPlatformId, {'\0'}, 0, 0, 0, 0, 0 };
        for ( ; VerifyVersionInfo(&checkVersion, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, conditionMask); ++checkVersion.dwMinorVersion)
            result.dwMinorVersion = checkVersion.dwMinorVersion;
    }
#  endif // !Q_OS_WINCE
    return result;
}

QSysInfo::WinVersion QSysInfo::windowsVersion()
{
#ifndef VER_PLATFORM_WIN32s
#define VER_PLATFORM_WIN32s            0
#endif
#ifndef VER_PLATFORM_WIN32_WINDOWS
#define VER_PLATFORM_WIN32_WINDOWS  1
#endif
#ifndef VER_PLATFORM_WIN32_NT
#define VER_PLATFORM_WIN32_NT            2
#endif
#ifndef VER_PLATFORM_WIN32_CE
#define VER_PLATFORM_WIN32_CE            3
#endif

    static QSysInfo::WinVersion winver;
    if (winver)
        return winver;
    winver = QSysInfo::WV_NT;
    const OSVERSIONINFO osver = winOsVersion();
#ifdef Q_OS_WINCE
    DWORD qt_cever = 0;
    qt_cever = osver.dwMajorVersion * 100;
    qt_cever += osver.dwMinorVersion * 10;
#endif
    switch (osver.dwPlatformId) {
    case VER_PLATFORM_WIN32s:
        winver = QSysInfo::WV_32s;
        break;
    case VER_PLATFORM_WIN32_WINDOWS:
        // We treat Windows Me (minor 90) the same as Windows 98
        if (osver.dwMinorVersion == 90)
            winver = QSysInfo::WV_Me;
        else if (osver.dwMinorVersion == 10)
            winver = QSysInfo::WV_98;
        else
            winver = QSysInfo::WV_95;
        break;
#ifdef Q_OS_WINCE
    case VER_PLATFORM_WIN32_CE:
        if (qt_cever >= 600)
            winver = QSysInfo::WV_CE_6;
        if (qt_cever >= 500)
            winver = QSysInfo::WV_CE_5;
        else if (qt_cever >= 400)
            winver = QSysInfo::WV_CENET;
        else
            winver = QSysInfo::WV_CE;
        break;
#endif
    default: // VER_PLATFORM_WIN32_NT
        if (osver.dwMajorVersion < 5) {
            winver = QSysInfo::WV_NT;
        } else if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0) {
            winver = QSysInfo::WV_2000;
        } else if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 1) {
            winver = QSysInfo::WV_XP;
        } else if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 2) {
            winver = QSysInfo::WV_2003;
        } else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 0) {
            winver = QSysInfo::WV_VISTA;
        } else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 1) {
            winver = QSysInfo::WV_WINDOWS7;
        } else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 2) {
            winver = QSysInfo::WV_WINDOWS8;
        } else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 3) {
            winver = QSysInfo::WV_WINDOWS8_1;
        } else {
            qWarning("Qt: Untested Windows version %d.%d detected!",
                     int(osver.dwMajorVersion), int(osver.dwMinorVersion));
            winver = QSysInfo::WV_NT_based;
        }
    }

#ifdef QT_DEBUG
    {
        QByteArray override = qgetenv("QT_WINVER_OVERRIDE");
        if (override.isEmpty())
            return winver;

        if (override == "Me")
            winver = QSysInfo::WV_Me;
        if (override == "95")
            winver = QSysInfo::WV_95;
        else if (override == "98")
            winver = QSysInfo::WV_98;
        else if (override == "NT")
            winver = QSysInfo::WV_NT;
        else if (override == "2000")
            winver = QSysInfo::WV_2000;
        else if (override == "2003")
            winver = QSysInfo::WV_2003;
        else if (override == "XP")
            winver = QSysInfo::WV_XP;
        else if (override == "VISTA")
            winver = QSysInfo::WV_VISTA;
        else if (override == "WINDOWS7")
            winver = QSysInfo::WV_WINDOWS7;
        else if (override == "WINDOWS8")
            winver = QSysInfo::WV_WINDOWS8;
    }
#endif

    return winver;
}

const QSysInfo::WinVersion QSysInfo::WindowsVersion = QSysInfo::windowsVersion();

#endif

#ifdef Q_OS_SYMBIAN
static QSysInfo::SymbianVersion cachedSymbianVersion = QSysInfo::SymbianVersion(-1);
static QSysInfo::S60Version cachedS60Version = QSysInfo::S60Version(-1);

static void symbianInitVersions()
{
    // Use pure Symbian code, because if done using QDir, there will be a call back
    // to this method, resulting doing this expensive operation twice before the cache kicks in.
    // Pure Symbian code also makes this method ~10x faster, speeding up the application launch.
    RFs rfs = qt_s60GetRFs();
    TFindFile fileFinder(rfs);
    CDir* contents;

    // Check for platform version
    TInt err = fileFinder.FindWildByDir(qt_S60Filter, qt_symbianSystemInstallDir, contents);
    if (err == KErrNone) {
        QScopedPointer<CDir> contentsDeleter(contents);
        err = contents->Sort(EDescending|ESortByName);
        if (err == KErrNone && contents->Count() > 0 && (*contents)[0].iName.Length() >= 12) {
            TInt major = (*contents)[0].iName[9] - '0';
            TInt minor = (*contents)[0].iName[11] - '0';
            if (major == 3) {
                if (minor == 1) {
                    cachedS60Version = QSysInfo::SV_S60_3_1;
                    cachedSymbianVersion = QSysInfo::SV_9_2;
                } else if (minor == 2) {
                    cachedS60Version = QSysInfo::SV_S60_3_2;
                    cachedSymbianVersion = QSysInfo::SV_9_3;
                }
            } else if (major == 5) {
                if (minor == 0) {
                    cachedS60Version = QSysInfo::SV_S60_5_0;
                    cachedSymbianVersion = QSysInfo::SV_9_4;
                } else if (minor == 1) {
                    cachedS60Version = QSysInfo::SV_S60_5_1;
                    cachedSymbianVersion = QSysInfo::SV_SF_2;
                } else if (minor == 2) {
                    cachedS60Version = QSysInfo::SV_S60_5_2;
                    cachedSymbianVersion = QSysInfo::SV_SF_3;
                } else if (minor == 3) {
                    cachedS60Version = QSysInfo::SV_S60_5_3;
                    cachedSymbianVersion = QSysInfo::SV_API_5_3;
                } else if (minor == 4) {
                    cachedS60Version = QSysInfo::SV_S60_5_4;
                    cachedSymbianVersion = QSysInfo::SV_API_5_4;
                } else if (minor >= 5) {
                    cachedS60Version = QSysInfo::SV_S60_5_5;
                    cachedSymbianVersion = QSysInfo::SV_API_5_5;
                }
            }
        }
    }

#  ifdef Q_CC_NOKIAX86
    if (cachedS60Version == -1) {
        // Some emulator environments may not contain the version specific .sis files, so
        // simply hardcode the version on those environments. Note that can't use
        // S60_VERSION_* defines for S60 3.x/5.0 platforms, as they do not define them
        // right anyway in case .sis files are not found.
#   if defined(__SERIES60_31__)
        cachedS60Version = QSysInfo::SV_S60_3_1;
        cachedSymbianVersion = QSysInfo::SV_9_2;
#   elif defined(__S60_32__)
        cachedS60Version = QSysInfo::SV_S60_3_2;
        cachedSymbianVersion = QSysInfo::SV_9_3;
#   elif defined(__S60_50__)
        cachedS60Version = QSysInfo::SV_S60_5_0;
        cachedSymbianVersion = QSysInfo::SV_9_4;
#   elif defined(S60_VERSION_5_2)
        cachedS60Version = QSysInfo::SV_S60_5_2;
        cachedSymbianVersion = QSysInfo::SV_SF_3;
#   elif defined(S60_VERSION_5_3)
        cachedS60Version = QSysInfo::SV_S60_5_3;
        cachedSymbianVersion = QSysInfo::SV_API_5_3;
#   elif defined(S60_VERSION_5_4)
        cachedS60Version = QSysInfo::SV_S60_5_4;
        cachedSymbianVersion = QSysInfo::SV_API_5_4;
#   elif defined(S60_VERSION_5_5)
        cachedS60Version = QSysInfo::SV_S60_5_5;
        cachedSymbianVersion = QSysInfo::SV_API_5_5;
#   endif
    }
#  endif

    if (cachedS60Version == -1) {
        //If reaching here, it was not possible to determine the version
        cachedS60Version = QSysInfo::SV_S60_Unknown;
        cachedSymbianVersion = QSysInfo::SV_Unknown;
    }
}

QSysInfo::SymbianVersion QSysInfo::symbianVersion()
{
    if (cachedSymbianVersion == -1)
        symbianInitVersions();

    return cachedSymbianVersion;
}

QSysInfo::S60Version QSysInfo::s60Version()
{
    if (cachedS60Version == -1)
        symbianInitVersions();

    return cachedS60Version;
}
#endif // ifdef Q_OS_SYMBIAN

/*
  The Q_CHECK_PTR macro calls this function if an allocation check
  fails.
*/
void qt_check_pointer(const char *n, int l)
{
    qFatal("In file %s, line %d: Out of memory", n, l);
}

/* \internal
   Allows you to throw an exception without including <new>
   Called internally from Q_CHECK_PTR on certain OS combinations
*/
void qBadAlloc()
{
    QT_THROW(std::bad_alloc());
}

/*
  The Q_ASSERT macro calls this function when the test fails.
*/
void qt_assert(const char *assertion, const char *file, int line)
{
    qFatal("ASSERT: \"%s\" in file %s, line %d", assertion, file, line);
}

/*
  The Q_ASSERT_X macro calls this function when the test fails.
*/
void qt_assert_x(const char *where, const char *what, const char *file, int line)
{
    qFatal("ASSERT failure in %s: \"%s\", file %s, line %d", where, what, file, line);
}


/*
    Dijkstra's bisection algorithm to find the square root of an integer.
    Deliberately not exported as part of the Qt API, but used in both
    qsimplerichtext.cpp and qgfxraster_qws.cpp
*/
Q_CORE_EXPORT unsigned int qt_int_sqrt(unsigned int n)
{
    // n must be in the range 0...UINT_MAX/2-1
    if (n >= (UINT_MAX>>2)) {
        unsigned int r = 2 * qt_int_sqrt(n / 4);
        unsigned int r2 = r + 1;
        return (n >= r2 * r2) ? r2 : r;
    }
    uint h, p= 0, q= 1, r= n;
    while (q <= n)
        q <<= 2;
    while (q != 1) {
        q >>= 2;
        h= p + q;
        p >>= 1;
        if (r >= h) {
            p += q;
            r -= h;
        }
    }
    return p;
}

#if defined(qMemCopy)
#  undef qMemCopy
#endif
#if defined(qMemSet)
#  undef qMemSet
#endif

void *qMemCopy(void *dest, const void *src, size_t n) { return memcpy(dest, src, n); }
void *qMemSet(void *dest, int c, size_t n) { return memset(dest, c, n); }

static QtMsgHandler handler = 0;                // pointer to debug handler

#if defined(Q_CC_MWERKS) && defined(Q_OS_MACX)
extern bool qt_is_gui_used;
static void mac_default_handler(const char *msg)
{
    if (qt_is_gui_used) {
        Str255 pmsg;
        qt_mac_to_pascal_string(QString::fromAscii(msg), pmsg);
        DebugStr(pmsg);
    } else {
        fprintf(stderr, msg);
    }
}
#endif // Q_CC_MWERKS && Q_OS_MACX

#if defined(QT_USE_SLOG2)
#ifndef QT_LOG_CODE
#define QT_LOG_CODE 9000
#endif

extern char *__progname;

static void slog2_default_handler(QtMsgType msgType, const char *message)
{
    if (slog2_set_default_buffer((slog2_buffer_t)-1) == 0) {
        slog2_buffer_set_config_t buffer_config;
        slog2_buffer_t buffer_handle;

        buffer_config.buffer_set_name = __progname;
        buffer_config.num_buffers = 1;
        buffer_config.verbosity_level = SLOG2_INFO;
        buffer_config.buffer_config[0].buffer_name = "default";
        buffer_config.buffer_config[0].num_pages = 8;

        if (slog2_register(&buffer_config, &buffer_handle, 0) == -1) {
            fprintf(stderr, "Error registering slogger2 buffer!\n");
            fprintf(stderr, "%s", message);
            fflush(stderr);
            return;
        }

        // Set as the default buffer
        slog2_set_default_buffer(buffer_handle);
    }
    int severity;
    //Determines the severity level
    switch (msgType) {
    case QtDebugMsg:
        severity = SLOG2_INFO;
        break;
    case QtWarningMsg:
        severity = SLOG2_NOTICE;
        break;
    case QtCriticalMsg:
        severity = SLOG2_WARNING;
        break;
    case QtFatalMsg:
        severity = SLOG2_ERROR;
        break;
    }
    //writes to the slog2 buffer
    slog2c(NULL, QT_LOG_CODE, severity, message);
}
#endif // QT_USE_SLOG2

#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)
{
    const char *s = 0;
    QString ret;
    if (errorCode == -1) {
#if defined(Q_OS_WIN)
        errorCode = GetLastError();
#else
        errorCode = errno;
#endif
    }
    switch (errorCode) {
    case 0:
        break;
    case EACCES:
        s = QT_TRANSLATE_NOOP("QIODevice", "Permission denied");
        break;
    case EMFILE:
        s = QT_TRANSLATE_NOOP("QIODevice", "Too many open files");
        break;
    case ENOENT:
        s = QT_TRANSLATE_NOOP("QIODevice", "No such file or directory");
        break;
    case ENOSPC:
        s = QT_TRANSLATE_NOOP("QIODevice", "No space left on device");
        break;
    default: {
#ifdef Q_OS_WIN
        wchar_t *string = 0;
        FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
                      NULL,
                      errorCode,
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                      (LPWSTR)&string,
                      0,
                      NULL);
        ret = QString::fromWCharArray(string);
        LocalFree((HLOCAL)string);

        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');
        ret = fromstrerror_helper(strerror_r(errorCode, buf.data(), buf.size()), buf);
#else
        ret = QString::fromLocal8Bit(strerror(errorCode));
#endif
    break; }
    }
    if (s)
        // ######## this breaks moc build currently
//         ret = QCoreApplication::translate("QIODevice", s);
        ret = QString::fromLatin1(s);
    return ret.trimmed();
}


#if defined(Q_OS_WIN) && defined(QT_BUILD_CORE_LIB)
extern bool usingWinMain;
extern Q_CORE_EXPORT void qWinMsgHandler(QtMsgType t, const char* str);
#endif

QtMsgHandler qInstallMsgHandler(QtMsgHandler h)
{
    QtMsgHandler old = handler;
    handler = h;
#if defined(Q_OS_WIN) && defined(QT_BUILD_CORE_LIB)
    if (!handler && usingWinMain)
        handler = qWinMsgHandler;
#endif
    return old;
}

void qt_message_output(QtMsgType msgType, const char *buf)
{
    if (handler) {
        (*handler)(msgType, buf);
    } else {
#if defined(Q_CC_MWERKS) && defined(Q_OS_MACX)
        mac_default_handler(buf);
#elif defined(QT_USE_SLOG2)
        slog2_default_handler(msgType, buf);
#elif defined(Q_OS_WINCE)
        QString fstr = QString::fromLatin1(buf);
        fstr += QLatin1Char('\n');
        OutputDebugString(reinterpret_cast<const wchar_t *> (fstr.utf16()));
#elif defined(Q_OS_SYMBIAN)
        // RDebug::Print has a cap of 256 characters so break it up
        char format[] = "[Qt Message] %S";
        const int maxBlockSize = 256 - sizeof(format);
        const TPtrC8 ptr(reinterpret_cast<const TUint8*>(buf));
        for (int i = 0; i < ptr.Length(); i += maxBlockSize) {
            TPtrC8 part(ptr.Mid(i, qMin(maxBlockSize, ptr.Length()-i)));
            RDebug::Printf(format, &part);
        }
#else
        fprintf(stderr, "%s\n", buf);
        fflush(stderr);
#endif
    }

    if (msgType == QtFatalMsg
        || (msgType == QtWarningMsg
            && (!qgetenv("QT_FATAL_WARNINGS").isNull())) ) {

#if defined(Q_CC_MSVC) && defined(QT_DEBUG) && defined(_DEBUG) && defined(_CRT_ERROR)
        // get the current report mode
        int reportMode = _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_WNDW);
        _CrtSetReportMode(_CRT_ERROR, reportMode);
#if !defined(Q_OS_WINCE)
        int ret = _CrtDbgReport(_CRT_ERROR, __FILE__, __LINE__, QT_VERSION_STR, buf);
#else
        int ret = _CrtDbgReportW(_CRT_ERROR, _CRT_WIDE(__FILE__),
            __LINE__, _CRT_WIDE(QT_VERSION_STR), reinterpret_cast<const wchar_t *> (QString::fromLatin1(buf).utf16()));
#endif
        if (ret == 0  && reportMode & _CRTDBG_MODE_WNDW)
            return; // ignore
        else if (ret == 1)
            _CrtDbgBreak();
#endif

#if defined(Q_OS_SYMBIAN)
        __DEBUGGER(); // on the emulator, get the debugger to kick in if there's one around
        TBuf<256> tmp;
        TPtrC8 ptr(reinterpret_cast<const TUint8*>(buf));
        TInt len = Min(tmp.MaxLength(), ptr.Length());
        tmp.Copy(ptr.Left(len));
        // Panic the current thread. We don't use real panic codes, so 0 has no special meaning.
        User::Panic(tmp, 0);
#elif (defined(Q_OS_UNIX) || defined(Q_CC_MINGW))
        abort(); // trap; generates core dump
#else
        exit(1); // goodbye cruel world
#endif
    }
}

#if !defined(QT_NO_EXCEPTIONS)

static void qEmergencyOut(QtMsgType msgType, const char *msg, va_list ap)
{
    char emergency_buf[256] = { '\0' };
    emergency_buf[255] = '\0';
    if (msg)
        qvsnprintf(emergency_buf, 255, msg, ap);
    qt_message_output(msgType, emergency_buf);
}
#endif

static void qt_message(QtMsgType msgType, const char *msg, va_list ap)
{
#if !defined(QT_NO_EXCEPTIONS)
    if (std::uncaught_exception()) {
        qEmergencyOut(msgType, msg, ap);
        return;
    }
#endif
    QByteArray buf;
    if (msg) {
        QT_TRY {
            buf = QString().vsprintf(msg, ap).toLocal8Bit();
        } QT_CATCH(const std::bad_alloc &) {
#if !defined(QT_NO_EXCEPTIONS)
            qEmergencyOut(msgType, msg, ap);
            // don't rethrow - we use qWarning and friends in destructors.
            return;
#endif
        }
    }
    qt_message_output(msgType, buf.constData());
}

#undef qDebug

void qDebug(const char *msg, ...)
{
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qt_message(QtDebugMsg, msg, ap);
    va_end(ap);
}

#undef qWarning

void qWarning(const char *msg, ...)
{
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qt_message(QtWarningMsg, msg, ap);
    va_end(ap);
}

void qCritical(const char *msg, ...)
{
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qt_message(QtCriticalMsg, msg, ap);
    va_end(ap);
}

#ifdef QT3_SUPPORT
void qSystemWarning(const char *msg, int code)
   { qCritical("%s (%s)", msg, qt_error_string(code).toLocal8Bit().constData()); }
#endif // QT3_SUPPORT

void qErrnoWarning(const char *msg, ...)
{
    // qt_error_string() will allocate anyway, so we don't have
    // to be careful here (like we do in plain qWarning())
    QString buf;
    va_list ap;
    va_start(ap, msg);
    if (msg)
        buf.vsprintf(msg, ap);
    va_end(ap);

    qCritical("%s (%s)", buf.toLocal8Bit().constData(), qt_error_string(-1).toLocal8Bit().constData());
}

void qErrnoWarning(int code, const char *msg, ...)
{
    // qt_error_string() will allocate anyway, so we don't have
    // to be careful here (like we do in plain qWarning())
    QString buf;
    va_list ap;
    va_start(ap, msg);
    if (msg)
        buf.vsprintf(msg, ap);
    va_end(ap);

    qCritical("%s (%s)", buf.toLocal8Bit().constData(), qt_error_string(code).toLocal8Bit().constData());
}

void qFatal(const char *msg, ...)
{
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qt_message(QtFatalMsg, msg, ap);
    va_end(ap);
}

// getenv is declared as deprecated in VS2005. This function
// makes use of the new secure getenv function.
QByteArray qgetenv(const char *varName)
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
    size_t requiredSize = 0;
    QByteArray buffer;
    getenv_s(&requiredSize, 0, 0, varName);
    if (requiredSize == 0)
        return buffer;
    buffer.resize(int(requiredSize));
    getenv_s(&requiredSize, buffer.data(), requiredSize, varName);
    // requiredSize includes the terminating null, which we don't want.
    Q_ASSERT(buffer.endsWith('\0'));
    buffer.chop(1);
    return buffer;
#else
    return QByteArray(::getenv(varName));
#endif
}

bool qputenv(const char *varName, const QByteArray& value)
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
    return _putenv_s(varName, value.constData()) == 0;
#else
    QByteArray buffer(varName);
    buffer += '=';
    buffer += value;
    char* envVar = qstrdup(buffer.constData());
    int result = putenv(envVar);
    if (result != 0) // error. we have to delete the string.
        delete[] envVar;
    return result == 0;
#endif
}

#if defined(Q_OS_UNIX) && !defined(Q_OS_SYMBIAN) && !defined(QT_NO_THREAD)

#  if defined(Q_OS_INTEGRITY) && defined(__GHS_VERSION_NUMBER) && (__GHS_VERSION_NUMBER < 500)
// older versions of INTEGRITY used a long instead of a uint for the seed.
typedef long SeedStorageType;
#  else
typedef uint SeedStorageType;
#  endif

typedef QThreadStorage<SeedStorageType *> SeedStorage;
Q_GLOBAL_STATIC(SeedStorage, randTLS)  // Thread Local Storage for seed value

#endif

void qsrand(uint seed)
{
#if defined(Q_OS_UNIX) && !defined(Q_OS_SYMBIAN) && !defined(QT_NO_THREAD)
    SeedStorage *seedStorage = randTLS();
    if (seedStorage) {
        SeedStorageType *pseed = seedStorage->localData();
        if (!pseed)
            seedStorage->setLocalData(pseed = new SeedStorageType);
        *pseed = seed;
    } else {
        //global static seed storage should always exist,
        //except after being deleted by QGlobalStaticDeleter.
        //But since it still can be called from destructor of another
        //global static object, fallback to srand(seed)
        srand(seed);
    }
#else
    // On Windows and Symbian srand() and rand() already use Thread-Local-Storage
    // to store the seed between calls
    // this is also valid for QT_NO_THREAD
    srand(seed);
#endif
}

int qrand()
{
#if defined(Q_OS_UNIX) && !defined(Q_OS_SYMBIAN) && !defined(QT_NO_THREAD)
    SeedStorage *seedStorage = randTLS();
    if (seedStorage) {
        SeedStorageType *pseed = seedStorage->localData();
        if (!pseed) {
            seedStorage->setLocalData(pseed = new SeedStorageType);
            *pseed = 1;
        }
        return rand_r(pseed);
    } else {
        //global static seed storage should always exist,
        //except after being deleted by QGlobalStaticDeleter.
        //But since it still can be called from destructor of another
        //global static object, fallback to rand()
        return rand();
    }
#else
    // On Windows and Symbian srand() and rand() already use Thread-Local-Storage
    // to store the seed between calls
    // this is also valid for QT_NO_THREAD
    return rand();
#endif
}

#if defined(QT3_SUPPORT) && !defined(QT_NO_SETTINGS)
QT_BEGIN_INCLUDE_NAMESPACE
#include <qlibraryinfo.h>
QT_END_INCLUDE_NAMESPACE

static const char *qInstallLocation(QLibraryInfo::LibraryLocation loc)
{
    static QByteArray ret;
    ret = QLibraryInfo::location(loc).toLatin1();
    return ret.constData();
}
const char *qInstallPath()
{
    return qInstallLocation(QLibraryInfo::PrefixPath);
}
const char *qInstallPathDocs()
{
    return qInstallLocation(QLibraryInfo::DocumentationPath);
}
const char *qInstallPathHeaders()
{
    return qInstallLocation(QLibraryInfo::HeadersPath);
}
const char *qInstallPathLibs()
{
    return qInstallLocation(QLibraryInfo::LibrariesPath);
}
const char *qInstallPathBins()
{
    return qInstallLocation(QLibraryInfo::BinariesPath);
}
const char *qInstallPathPlugins()
{
    return qInstallLocation(QLibraryInfo::PluginsPath);
}
const char *qInstallPathData()
{
    return qInstallLocation(QLibraryInfo::DataPath);
}
const char *qInstallPathTranslations()
{
    return qInstallLocation(QLibraryInfo::TranslationsPath);
}
const char *qInstallPathSysconf()
{
    return qInstallLocation(QLibraryInfo::SettingsPath);
}
#endif

struct QInternal_CallBackTable {
    QVector<QList<qInternalCallback> > callbacks;
};

Q_GLOBAL_STATIC(QInternal_CallBackTable, global_callback_table)

bool QInternal::registerCallback(Callback cb, qInternalCallback callback)
{
    if (cb >= 0 && cb < QInternal::LastCallback) {
        QInternal_CallBackTable *cbt = global_callback_table();
        cbt->callbacks.resize(cb + 1);
        cbt->callbacks[cb].append(callback);
        return true;
    }
    return false;
}

bool QInternal::unregisterCallback(Callback cb, qInternalCallback callback)
{
    if (cb >= 0 && cb < QInternal::LastCallback) {
        QInternal_CallBackTable *cbt = global_callback_table();
        return (bool) cbt->callbacks[cb].removeAll(callback);
    }
    return false;
}

bool QInternal::activateCallbacks(Callback cb, void **parameters)
{
    Q_ASSERT_X(cb >= 0, "QInternal::activateCallback()", "Callback id must be a valid id");

    QInternal_CallBackTable *cbt = global_callback_table();
    if (cbt && cb < cbt->callbacks.size()) {
        QList<qInternalCallback> callbacks = cbt->callbacks[cb];
        bool ret = false;
        for (int i=0; i<callbacks.size(); ++i)
            ret |= (callbacks.at(i))(parameters);
        return ret;
    }
    return false;
}

extern void qt_set_current_thread_to_main_thread();

bool QInternal::callFunction(InternalFunction func, void **args)
{
    Q_ASSERT_X(func >= 0,
               "QInternal::callFunction()", "Callback id must be a valid id");
#ifndef QT_NO_QOBJECT
    switch (func) {
#ifndef QT_NO_THREAD
    case QInternal::CreateThreadForAdoption:
        *args = QAdoptedThread::createThreadForAdoption();
        return true;
#endif
    case QInternal::RefAdoptedThread:
        QThreadData::get2((QThread *) *args)->ref();
        return true;
    case QInternal::DerefAdoptedThread:
        QThreadData::get2((QThread *) *args)->deref();
        return true;
    case QInternal::SetCurrentThreadToMainThread:
        qt_set_current_thread_to_main_thread();
        return true;
    case QInternal::SetQObjectSender: {
        QObject *receiver = (QObject *) args[0];
        QObjectPrivate::Sender *sender = new QObjectPrivate::Sender;
        sender->sender = (QObject *) args[1];
        sender->signal = *(int *) args[2];
        sender->ref = 1;

        // Store the old sender as "return value"
        args[3] = QObjectPrivate::setCurrentSender(receiver, sender);
        args[4] = sender;
        return true;
    }
    case QInternal::GetQObjectSender: {
        QObject *receiver = (QObject *) args[0];
        QObjectPrivate *d = QObjectPrivate::get(receiver);
        args[1] = d->currentSender ? d->currentSender->sender : 0;
        return true;
    }
    case QInternal::ResetQObjectSender: {
        QObject *receiver = (QObject *) args[0];
        QObjectPrivate::Sender *oldSender = (QObjectPrivate::Sender *) args[1];
        QObjectPrivate::Sender *sender = (QObjectPrivate::Sender *) args[2];
        QObjectPrivate::resetCurrentSender(receiver, sender, oldSender);
        delete sender;
        return true;
    }

    default:
        break;
    }
#else
    Q_UNUSED(args);
    Q_UNUSED(func);
#endif

    return false;
}

#if defined(Q_OS_SYMBIAN)

#include <typeinfo>

#include <stdexcept>

class QSymbianLeaveException : public std::exception
{
public:
    inline QSymbianLeaveException(int err) : error(err) {}
    inline const char* what() const throw() { return "Symbian leave exception"; }

public:
    int error;
};

void qt_symbian_throwIfError(int error)
{
    if (error >= KErrNone)
        return;  // do nothing - not an exception
    switch (error) {
    case KErrNoMemory:
        throw std::bad_alloc();
    case KErrArgument:
        throw std::invalid_argument("from Symbian error");
    case KErrOverflow:
        throw std::overflow_error("from Symbian error");
    case KErrUnderflow:
        throw std::underflow_error("from Symbian error");
    default:
        throw QSymbianLeaveException(error);
    }
}

void qt_symbian_exception2LeaveL(const std::exception& aThrow)
{
    User::Leave(qt_symbian_exception2Error(aThrow));
}

int qt_symbian_exception2Error(const std::exception& aThrow)
{
    const std::type_info& atype = typeid(aThrow);
    int err = KErrGeneral;

    if(atype == typeid (std::bad_alloc))
        err = KErrNoMemory;
    else if(atype == typeid(QSymbianLeaveException))
        err = static_cast<const QSymbianLeaveException&>(aThrow).error;
    else {
        if(atype == typeid(std::invalid_argument))
            err =  KErrArgument;
        else if(atype == typeid(std::out_of_range))
            // std::out_of_range is of type logic_error which by definition means that it is
            // "presumably detectable before the program executes".
            // std::out_of_range is used to report an argument is not within the expected range.
            // The description of KErrArgument says an argument is out of range. Hence the mapping.
            err =  KErrArgument;
        else if(atype == typeid(std::overflow_error))
            err =  KErrOverflow;
        else if(atype == typeid(std::underflow_error))
            err =  KErrUnderflow;
        qWarning("translation from std exception \"%s\" to %d", aThrow.what(), err);
    }

    return err;
}
#endif

QT_END_NAMESPACE