qt5base-lts/src/corelib/global/qhooks.cpp
Giuseppe D'Angelo a6cdfacf8d QHostAddress: make it implictly shared
QHostAddress is one of the few classes in Qt which is pimpl'd but not
implictly shared, making it suprisingly expensive to copy around, return
by value and so on. Being pimpl'd it is also still lacking a move
constructor, like most of such types in Qt.

Remove a bit of the surprise factor and make it implictly shared. In
practice this means making it eagerly parse host addresses from strings.

Since it was entirely implemented out of line, replacing it with a
implictly shared implementation is binary compatible.

[ChangeLog][QtNetwork][QHostAddress] QHostAddress is now implicitly
shared.

Change-Id: Ia7ff94efcb74e7321b7607cd690c5c162f685605
Reviewed-by: Richard J. Moore <rich@kde.org>
2017-01-19 14:09:47 +00:00

77 lines
3.2 KiB
C++

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#include "qhooks_p.h"
QT_BEGIN_NAMESPACE
// Only add to the end, and bump version if you do.
quintptr Q_CORE_EXPORT qtHookData[] = {
3, // hook data version
QHooks::LastHookIndex, // size of qtHookData
QT_VERSION,
// AddQObject, void(*)(QObject*), called for every constructed QObject
// Note: this is called from the QObject constructor, ie. the sub-class
// constructors haven't run yet.
0,
// RemoveQObject, void(*)(QObject*), called for every destructed QObject
// Note: this is called from the QObject destructor, ie. the object
// you get as an argument is already largely invalid.
0,
// Startup, void(*)(), called once QCoreApplication is operational
0,
// TypeInformationVersion, an integral value, bumped whenever private
// object sizes or member offsets that are used in Qt Creator's
// data structure "pretty printing" change.
//
// The required sizes and offsets are tested in tests/auto/other/toolsupport.
// When this fails and the change was intentional, adjust the test and
// adjust this value here.
16
};
Q_STATIC_ASSERT(QHooks::LastHookIndex == sizeof(qtHookData) / sizeof(qtHookData[0]));
QT_END_NAMESPACE