| Commit message (Collapse) | Author | Age | Files | Lines |
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Currently QMetaType API contains almost only static methods. This works
nice until someone needs more information or needs to do more operations
on a type. In this case every function call has to do type dispatch.
This API allows to avoid redundant type dispatching, by caching a
type information in a QMetaType instance. It gives significant
performance boost especially for custom types (up to 9x).
Change-Id: I223d066268402e072e41ca1d0a3e7bc160655d7f
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
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QMetaType used to register a typeName and factory functions for
creation/destruction of objects. While it would be possible for a single
type name to be registered matching different actual types and memory
layouts, there was little that could be done about it.
Now that QMetaType is tracking type information with a direct impact on
data layout and ABI (size and type flags) it is important that we check
and detect binary incompatibilities as early as possible.
[Such incompatibilities could arise from type name re-use (technically,
ODR violations) or, more commonly, as version mismatch between different
shared libraries or plugins.]
Only type size and flags are checked as function pointers to inline and
template or otherwise non-exported functions could trivially differ
across translation units and shared libraries.
When registering typedef types, a check is made to ensure the same name
doesn't get registered as different types.
Change-Id: I8211c3de75d4854ce8fafdb620d3a931c206e0c3
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
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The function hasn't been working properly. It was not well tested, for
example it is undefined how QVariant should behave if it contains an
instance of an unregistered type.
Concept of unregistering types was inspired by plug-in system, but in
most supported platforms we do not unload plug-ins.
Idea of type unregistering may block optimizations in meta object
system, because it would be not possible to cache a type id.
QMetaType::type() could return different ids for the same name.
Currently QMetaType::unregisterType() is not used in Qt.
Change-Id: I878b6e8d91de99f9bcefeab73af2e2ba0bd0cba0
Reviewed-by: Prasanth Ullattil <prasanth.ullattil@nokia.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
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Commit 4b8ceb41aed352f10d36db5284453f425dbc5f3f added the requirement
that pointed-to types need to be registered when registering pointer
types. Unfortunately, the implementation also affects function pointer
types.
This change whitelists 0, 1, 2 and 3 argument functions as not deriving
from QObject, forgoing the need to workaround details of the type
registration implementation when registering those function pointer
types.
Change-Id: I4d855e9d70a8179a6e31b84623ad5bf063e0d6d8
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
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As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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In QMetaType "void" is a regular type, lack of c++ sizeof operator
force us to write a template specialization for the type.
Change-Id: I9a56e135223b416b8031836d29ef33ef3fb750e4
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
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If T is defined as a metatype, then QList<T> is too automatically.
So for example, no need to use
Q_DECLARE_METATYPE(QList<int>)
anymore.
This is a source compatible change.
Change-Id: I2ee8a7b9e28fe6d4775f6a05cce39aca8563e0c5
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
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This is a source incompatible change for Q_DECLARE_METATYPE(T*),
which now requires T to be fully defined.
The consequences of this are:
* Forward declared types can no longer be declared as a metatype.
(though this is a very uncommon thing to do).
There is a trivial workaround where necessary.
Change-Id: Id74c40088b8c0b466fcd7c55abd616f69acc82c8
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Replace Nokia contact email address with Qt Project website.
Change-Id: I431bbbf76d7c27d8b502f87947675c116994c415
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Change-Id: Ib87cfff8b4baee78189f3df5e20d2e1a00d690e1
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
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Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Change-Id: I6be6129d9f6bf468ba8a5805cfa0f6f79199afb3
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Prasanth Ullattil <prasanth.ullattil@nokia.com>
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We need that information to perform some optimizations in QVariant.
Change-Id: Id9a1716e49e4cedd17cd09a32fea4ff003ef61f2
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
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Bug trackers come and go, so using bug identifiers in function and test
case names will ensure that those names eventually become meaningless.
It is better to choose a meaningful name and provide explanatory
comments where appropriate.
Change-Id: I67c27782ef21b5d4eaab4854079a043c8ef6957b
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Tidy the autotest .pro files. Most autotest .pro files should look like
this:
CONFIG += testcase
TARGET = tst_something
QT = core testlib
SOURCES = tst_something.cpp
Change-Id: I877c2194e9fa9dd13478d117895e1e255a948ad7
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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QMetaType::Type enum is the main source of type ids. Currently
there are many tasks that can be replaced by a smart macro that
can iterate over all types. The patch introduces series of FOR_EACH_
macros that may be used for code generation.
As the first step the macro was used for Q_DECLARE_BUILTIN_METATYPE
to make sure that no type was forgotten.
Second step was to use created macros in autotest to improve tests
coverage.
Change-Id: I34e9ad7bacf02b44b028bc1aad20b1241aacebd3
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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qttest_p4.prf was added as a convenience for Qt's own autotests in Qt4.
It enables various crufty undocumented magic, of dubious value.
Stop using it, and explicitly enable the things from it which we want.
Change-Id: I7c1ffe9c8c294dbdc988e1582e580b1ed3f4593e
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
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By making it possible to specify the place in memory where a
type should be constructed, any meta-type can be allocated on
the stack, for example. In the QML/JS QObject binding, this
makes it possible to call slots and access properties from
JavaScript without having to perform any mallocs (e.g. due to
QVariant creation) in the C++ <--> JS value conversion, in
the best case.
In addition to QMetaType::construct() and QMetaType::destruct(),
this change introduces QMetaType::typeSize(), which returns the
size of a type in bytes. This can be used to prepare a suitable
buffer for constructing a type using construct().
Benchmarks indicate that in-place construction is 2-5x faster
than normal construction for core and GUI types on linux-g++.
Note that there is already a QMetaType::construct() function
in Qt 4, which has been renamed to QMetaType::create() in Qt 5.
In order to avoid existing usages of construct() in user code
to call the Qt 5 construct() (when they really meant to call
create()), the third argument ("copy") of construct() is made
mandatory. Hence, calls to QMetaType::construct() written for
Qt 4 will cause a compile error when compiled with Qt 5, and
the user must adapt his code.
Task-number: QTBUG-12574
Change-Id: I836f06f6ee1c1c3edbd199a03424c78c942bdd3e
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
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It only tested creating a copy of QSize.
This change adds testing of all core types, both
copy and non-copy creation.
Change-Id: If2b8fb45718c4a976dd8b883b332878f7fb0da6f
Reviewed-on: http://codereview.qt-project.org/6343
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
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create() is symmetric with destroy().
Also rename the internal methods and fields to be
consistent (qDeleteHelper already had the "right"
name, though!).
This change will allow us to use construct() and
destruct() for something else: Placement new-style
allocation (QTBUG-12574).
The old construct() is still kept for now, until
the other repositories have been updated to use
create().
Change-Id: Iceb184af6cffcb0a634359cfc3516c718ba0c2f5
Reviewed-on: http://codereview.qt-project.org/6342
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Added Test for qmetaproperty
Marked QSocketNotifier Autotest as insignificant. See QTBUG-21204
Marked qtranslator Autotest as insignificant. See QTBUG-21125
Marked corelib/io/qfile/largefile as insignificant. See QTBUG-21175
Task-number: QTBUG-21066
Change-Id: I2a7f6587845c355091bb07c8dd3d1557d16db0be
Reviewed-on: http://codereview.qt.nokia.com/3598
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>
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