By specification, date conversion functions for dates before the epoch
are not DST corrected. We converted QTime to a QDateTime where we set
the date part to Jan. 1, 1970, and then convert that to msecs since the
epoch UTC. For places on Earth where they had DST on that day (e.g.
Hobart in Australia), strange things happen: conversion from a QTime to
DateObject will use DST (because it's after the epoch in local time),
but conversions from DateObject to QTime won't use the DST because it's
before the epoch (in UTC).
Now as everyone knows, a 24-hour clock time has no meaning without a
date, only "elapsed time" has. But users still expect to be able to pass
QTime to QML/JS. So, we do the conversion on day 0 of month 0 of year 0,
and all of it in local time. This gives a stable conversion in both
directions, and the values in both C++ and QML/JS are the same for any
timezone (with or without DST) on this planet.
Task-number: QTBUG-54378
Change-Id: I892e16a93f015e92d311c6cae3ae7768b7373f6a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
This is a partial revert of 90b06e2773, as it had unwanted side
effects. The original intention was to make assignment from char to
string possible, or more specifically, we wanted a solution where a
QChar could be assigned to a QString, as a character and not a string
representation of its value. While this behavior is desirable for
QChar, we most likely want the opposite for the regular character types.
Task-number: QTBUG-49232
Change-Id: I82d5f72b900fe984c4db1478fd52a9eb69ad2ee6
Reviewed-by: Michael Brasser <michael.brasser@live.com>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
[ChangeLog][QtQml][Important Behavior Changes] A JS null value converted
to a QVariant now has type QMetaType::Nullptr rather than
QMetaType::VoidStar.
Change-Id: I91a64e444ada0f1884fe807f9973348ba1a878ff
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
It's debatable if the uglification is worth the overhead of a few
pointers.
Change-Id: I63b55b2043b8752a94d4b862c3892915135a72b7
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
This will allow us to #define them away on -no-qml-debug, saving two
pointers per engine.
Change-Id: I400cffd32cd7f55ff0e68565734b6002b9f901d5
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
... or with QL1C in such cases:
- if there is overloaded function
- in QStringBuilder expressions
Saves ~1.5 KB in text size.
Build config: ubuntu 16.04 x64, gcc 5.3
Change-Id: Icc0789f1c244ce20a3182494b0c7f35c9d77e41d
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
The implementation of many (or all) runtime functions consist of first
creating a QV4::Scope, which saves and restores the JS stack pointer.
It also prevents tail-calls because of that restoring behavior. In many
cases it suffices to do that at the entry-point of the runtime.
The return value of a JS function call is now also stored in the scope.
Previously, all return values were stored in a ScopedValue, got loaded
on return, and immediately stored in another ScopedValue in the caller.
This resulted in a lot of stores, where now there is only one store
needed, and no extra ScopedValue for every function.
Change-Id: I13d80fc0ce72c5702ef1536d41d12f710c5914fa
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Part of 0e053528 was reverted in the merge, about lastTimestamp. It
will be applied later in separate commit.
qmltest::shadersource-dynamic-sourceobject::test_endresult() was
blacklisted on linux.
Conflicts:
.qmake.conf
tests/auto/qml/debugger/qqmlprofilerservice/tst_qqmlprofilerservice.cpp
tests/auto/qmltest/BLACKLIST
tests/auto/qmltest/qmltest.pro
Task-number: QTBUG-53590
Task-number: QTBUG-53971
Change-Id: I48af90b49a3c7b29de16f4178a04807f8bc05130
Allocating from the JS stack will zero out the memory, and thus indicate
to valgrind that memory is not uninitialized. By first marking the whole
stack as uninitialized and only then allocating 2 entries, the behavior
for those two entries will now match the allocation behavior. This
fixes a false positive when using valgrind.
Change-Id: Icdb5279e1cfbfe6b5c385cc42c556edf721fa74b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
All other changes are just to be able to include qv8engine_p.h in
qv4engine_p.h
Change-Id: I71ba2ec42cdc20d5c7d97a74b99b4d1ada1a5ed8
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
This is a regression from commit 94e337fa95 where
we accidentally ended up not having a calling QML context set anymore when
initializing the properties on newly incubated objects as provided by the
caller. The QML context is necessary as for example when we set a URL property,
the URL can be relative and it will be resolved to the base url of the context
when written, such as in in QQmlPropertyPrivate::write.
Change-Id: I1d896381fc92f653a7d76f4d82174bca48828f5e
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Getting the native stack size can be really expensive. For example, on
Linux/x86_64 (Ubuntu 15.04), it is at least 200,000 instructions for a
single-threaded application. With more threads (like qmlscene) it typically
ends up around 1M(!) instructions. Worse, it is called twice in the
ExecutionEngine constructor.
So, now we limit the depth of JavaScript calls to a fixed number, 1234 by
default. This can be changed by setting the environment variable
QV4_MAX_CALL_DEPTH to the desired depth.
Change-Id: Ic13c8efb2769e64fbc73deee6f6fa39d7c0b7af5
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: Ic36f1a0a1436fe6ac6eeca8c2375a79857e9cb12
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
This only works for Windows 10 and later.
Setting the "Code Generation" capability in the manifest, WinRT
applications can use JIT for Windows 10 Desktop. Update the Allocator
in regards to this and also update the VirtualProtectFromApp section.
When the engine gets initialized, check for marking an area as
executable. If it fails, fallback to interpreter mode.
This does not affect ARM platforms, as we do not have calling
conventions yet. It is implicitly disabled as V4_ENABLE_JIT is not
defined.
[ChangeLog][WinRT] Enable JIT for x86/x64 targets on Windows 10 and
later.
Change-Id: Ie05add5263f71387c5ce98456b9bec86c6c07ceb
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
The wiki will provide information on how to work around the issue.
Change-Id: I4409f5b4af0668ab28197adb8766898124e8cec8
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
All identifiers starting with an underscore and a capital letter are
reserved to the compiler and must never be used by the user code. Try to
find a better name or, in the worst case, move the underscore to the
last position in these identifiers.
See commit cf63c63d558227fdbef09699c261560e7474f5ea in qtbase for a case
of such an identifier causing a build breakage when the compiler began
treating it specially (it was _Nullable).
Change-Id: I1d0f78915b5942aab07cffff140f9f39c29f0fdf
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
Where possible, use qEnvironmentVariableIsSet()/
qEnvironmentVariableIsEmpty() instead of checking on the
return value of qgetenv().
Where the value is required, add a check using one of
qEnvironmentVariableIsSet()/Empty().
Change-Id: Ia8b7534e6f5165bd8a6b4e63ccc139c42dd03056
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Otherwise different debug services could steal each other's debugers.
Change-Id: Ic0a50333d21c7d20a7124240ea598f8446400ae3
Reviewed-by: hjk <hjk@theqtcompany.com>
... into a pure interface and a QV4::Debugging::V4Debugger implementation.
This is in preparation of a second implementation of this interface
to be used with 'native mixed' debugging.
Change-Id: I3078dcfe4bdee392a2d13ef43a55ca993e7b88d8
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>
Move the connect/disconnect methods for signal handlers into
their prototype, so that we don't need to define them per instance
anymore.
Change-Id: Iac1e6d1dd7bce86730dbb6c51e2c3f79713641f7
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Gives around 10% speedup on the v8 splay benchmark.
Change-Id: I47f64e7b73bde59ac3bdd2c94fc199ecfbbf290e
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Move the name and message property into the prototype as
per JS spec. Only define the message property in the
object itself if the value used for construction is not
undefined.
In addition, clean up creation of the objects and centralize
it in a few template methods.
Change-Id: I014017b710575b30bf4e0b0228111878f5c73b9a
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Also disable the old way of constructing objects.
Change-Id: Ib4e69087cd563ae1481da116d6caf97876239798
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Declare the default prototype and internal class
in the class itself.
Change-Id: I08c2b42aa61a886580061336ae60cef8dedc0f03
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Gives around 10% speed improvement on the v8 regexp
benchmark.
Change-Id: Iad37bcbc79ccbfb92f65852b660364c919862a75
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Append the part of the objects property data that is
known ad instantiation time to the object itself and
by that avoid creating a separate MemberData. Saves
some memory and should speed up object creation.
Currently implemented only for Object and ArrayObject.
Change-Id: I7693bf2f3a28fb718522398ebb94ac115e021fa4
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Now that the other method is gone, let's use
the shorter currentContext
Change-Id: I2a6fb3b77f83a1ffdf314ad29081e303d17030ed
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
This saves one pointer per allocated execution context.
Now every execution context that is pushed, allocates two
Values on the js stack. One contains the context itself, the
other one the offset to the parent context.
Things are a bit tricky for with and catch scopes, as those
are called from the generated code, and can't open a Scope
anymore. In addition, all methods iterating over the js
stack frames need to work with ExecutionContext pointers,
not ScopedContext's.
Change-Id: I6f3013749d4e73d2fac37973b976ba6029686b82
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Avoid the implicit push inside the execution context constructor
and rather make this explicit in the code.
Change-Id: I1bb0fb523fddbb273fc666370d619f55f49cd40a
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
One more step towards removing the class alltogether.
Change-Id: Ic9f6794eb3c5c6605ee43ad23a6d432ebbf321a1
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Conflicts:
src/qml/debugger/qv4debugservice.cpp
src/qml/jsruntime/qv4value_inl_p.h
src/qml/jsruntime/qv4value_p.h
src/qml/memory/qv4mm.cpp
src/qml/memory/qv4mm_p.h
src/qml/qml/qqmlnotifier_p.h
src/qml/qml/qqmlproperty.cpp
src/quick/items/qquickflickable.cpp
src/quick/items/qquicktextedit.cpp
tests/auto/quick/qquickwindow/BLACKLIST
The extra changes in qqmlbinding.cpp are ported from changes to
qqmlproperty.cpp that occurred in parallel with writeBinding() being
moved to qqmlbinding.cpp.
Change-Id: I16d1920abf448c29a01822256f52153651a56356
This is required, so we can safely access the vtable even while
we're marking objects during GC.
Change-Id: I34f56b61b4bca0d0742faf607eb5ab8b2c30685e
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Add some runtime methods to access properties of the scope
object directly (using the QmlContext), and generate proper
code to call those.
Change-Id: I0b29357c9a3b9ad53ba568ec6cb763e8ecb10f21
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Our generated code (JIT and interpreter) should operate on the
QML context to retrieve QML related things. That's better than
operating on 4 different temps.
So this commit introduces the QML context as a temp in the
code we generate for QML. The next commits will move things over
to use that context with specialized runtime methods instead of
using generic subscript/get calls on the different subobjects.
Change-Id: Ia05cf339de9cdd23003f35cf78ede17d2590f8de
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
qtdeclarative\src\qml\jsruntime\qv4engine.cpp(179) : warning C4172: returning address of local variable or temporary: dummy
Disable warning as using the address is intended.
Change-Id: Ide894a8dc2fb94f11d0455723c46567c84d91f8d
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
... and do a GC run when it exceeds a threshold. The issue with Strings
is that they hold on to QString instances that store the real content.
However, the GC only sees the light-weight JS handle, and doesn't take
the size of the backing content into account. So it could happen that
big QStrings accumulate in the heap as long as the GC didn't reach its
threshold.
The newly introduced unmanaged heap threshold is upped by a factor of
two when exceeded, and lowered by a factor of 2 when the used heap space
falls below a quarter of the threshold. Also grow the threshold if there
is enough space after running the GC, but another GC run would be
triggered for the next allocation.
There is a special case for Heap::String::append, because this method
will copy the data from the left and right substrings into a new
QString. To track this, append notifies the memory manager directly of
the new length. The pointer to the memory manager is stored in
Heap::String, growing it from 40 bytes to 48 bytes (which makes it still
fit in the same bucket, so no extra memory is allocated).
Task-number: QTBUG-42002
Change-Id: I71313915e593a9908a2b227b0bc4d768e375ee17
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Create a specialized QmlContext instead of re-using
a call context with a QQmlContextWrapper as activation
object.
This saves some memory and opens up the route to getting
rid of the context wrapper in a future commit.
Change-Id: I1591c73932a08564fddf5137ac05bbc6f31dd4d5
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Add a const several places and pass values by pointer, not
reference. This allows us to also get rid of some Scope's.
Change-Id: I3b4c29c22511c947d024457e7b8fa2aaa6bec55d
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
It only contained the proto for the value type wrapper. Instead
just create it lazily, but reserve space on the js stack for it.
Change-Id: I2301549b6dc4007bd5ac848e1dca25aafd583c4a
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
These objects live on the JS stack and are thus marked implicitly.
Change-Id: I8295d8096d0a47861e0092c36e16b95db458de3c
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
There's many types that aren't being covered by DropArea API, such as
images. getDataAsString is not acceptable, since fromUtf8 chokes on
reading non-utf8.
This patch introduces getDataAsArrayBuffer method that won't try to convert
the data into a QString and simply pass a QV4::ArrayBuffer, that internally
keeps a QByteArray.
Change-Id: I65411b3d365ee6c5e13effd9167156771ee08a05
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Dyld will take the debug library and link it against the release
versions of the frameworks. (Using the debug versions is an option to
dyld when starting an application.) This requires all symbols in both
debug and release libraries in frameworks to be the same.
Change-Id: I6d96bcdf8577f1dffc63c508cb7adc0db2acc486
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
To protect against situations where we accidentally mark an object that belongs
to a different engine - there are many possible entry points - this patch adds
an assertion in debug builds for this situation. When it happens, it will point
more or less directly to the code that tries to push an object to the wrong JS
stack for marking. This helped in the investigation of QTBUG-44895
Change-Id: I311b9ff6d282d52e725044b03a62cd77085536be
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Convert most of the prototype objects in the v4 engine.
Change-Id: I365f290493c20973bc991b6a383649836e42a16a
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Started with objectPrototype, the next commits will move more
of them over into the new data structure.
Change-Id: I1a048e95149ce69e4e42094db2dd738ce49b50b8
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
We'll need to move all GC'ed objects currently stored in ExecutionEngine
onto the JS stack for easier management in a new garbage collection
scheme. This is the start of that change.
Change-Id: Ib3ad8e846875dade8a807ea79f063173d40e4aad
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
This is a cleaner separation and further reduces include dependencies
in the definitions of our basic data structured.
Change-Id: I18aa86cdea0c0dfbc16075d4d617af97e638811e
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Get rid of Value::asObject(), and pass const Managed pointers
into some more vtable methods.
Change-Id: Ia4f427d5fd8868f77b4015d1ce5424d32bfc2115
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
On architectures where the stack grows upwards (i.e. HP PA-RISC) the
stack limit calculation fails because the variables used to check the
offset are usually close to the bottom of the stack, which is in this
case the origin of the stack grows. Since these machines are a rare
obscurity simply assume that everything is fine on these machines. The
few people that are indeed running QML on such machines will probably
be able configure their stack size properly by default.
Task-number: QTBUG-44268
Change-Id: Ia83a39179a0f6e0602ba7a5032d386e12d8d1ba3
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
The get and getIndexed vtable methods should take a const Managed
pointer. Start cleaning up the asFoo() methods in Value and Managed
by removing asArrayObject() and asErrorObject().
Change-Id: Ibd49bf20773ef84c15785b7ac37a7bc9fd4745d5
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Don't spend any time repeatedly building the same internal class for the simple
binding functions. We can do that once at engine construction time.
Change-Id: I3777b5bd15ad4a8aaf78ae13bee27e8d8cadc2ee
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
* Avoid calling QMetaType::construct/destruct(typeId, ...) as that requires
repeated lookups in the type registry. Instead cache the constructor/destructor/etc.
function addresses in the QQmlValueType singletons as QMetaType
* Allocate memory for the gadget pointer lazily, to accommodate the common case of
a value type binding by property reference.
Change-Id: I98a3ac73453b8f80027c06401b4f29a9707949d2
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
ExecutionEngine performs shallow copy of internal data for ArrayBuffer
created from QByteArray.
Change-Id: I514cd9708a7fbe9a989937fac62d00b464d7362d
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Reviewed-by: Valery Kotov <kotov.valery@gmail.com>
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>
If a QChar (or char) was used to set a QString property, the
intermediate value used by the QML engine (int), would be
converted to a string representation of the integer and not the actual
character. To avoid this behavior, characters are now stored as string
objects and the string is then converted to the target char type if
possible.
A side effect of this solution is that it is makes it possible to
assign a string to a char property as well, but only if the string
contains exactly one character.
[ChangeLog][QtQml][Important Behavior Changes] Assigning a char to a
string will now create a string with the actual character instead of a
string representation of the character's code-point. A side effect of
this change is that a one-character string also can be assigned to a
character type.
Task-number: QTBUG-44934
Change-Id: Ifd15386933ee11354ee1bbb5598a5f0b00a08616
Reviewed-by: Alan Alpert (Personal) <416365416c@gmail.com>
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Get rid of value_cast, and move the Managed::as()
method into Value.
Change-Id: I440ac44ae77f4fda1a8a837383fe631f432f6532
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Support for "arraybuffer" response type for QQmlXMLHttpRequest was
added.
[ChangeLog][QtQml][QQmlXMLHttpRequest] QQmlXMLHttpRequest now
supports "arraybuffer" binary response type.
Change-Id: I866e543cc7bc6ab037ffff1ef6628057b73daf90
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Start moving the memory related functionality into it's own folder.
This will simplify refactoring of the GC related functionality later
on.
Change-Id: I70ec6f512af7a7897625afb84d914c17572b0ccd
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Avoid repeated instantiation of end() in loops, use variable instead.
Change-Id: I3bb1c6918cfd16a5dcefbcc03c442e99fe9bf76b
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Change-Id: I61120571787870c0ed17066afb31779b1e6e30e9
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
On FreeBSD pthread_attr_t is a pointer and is dereferenced when calling
pthread_attr_get_np() so if we don't initialize it will probably crash.
This is not a problem on glibc systems since there pthread_attr_t is an
opaque union an doesn't need to be allocated using malloc().
Change-Id: I227685ddf9981974ade08aee8917f7262c301787
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Makes more sense than storing a Value in there.
Change-Id: I2e6ca71477100c1e1639bb89cced4f4049b5e5c2
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Simplify some code in BooleanObject
Simplify access to call arguments and thisObject
Change-Id: I2f8e844019bc587385608beb02f05b15f827535c
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Remove duplicated methods. Remove some mostly unused methods,
and simplify some others.
Change-Id: I605b249e54417bb32c3dfc8e22f2c8b6b684a1e1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Liang Qi
Erik Verbruggen
Christian Strømme
Christian Kandeler
Ulf Hermann
Anton Kudryavtsev
Erik Verbruggen
Erik Verbruggen
Simon Hausmann
Andy Nichols
Nobuaki Sukegawa
Jani Heikkinen
Maurice Kalinowski
Mathias Hasselmann
Thiago Macieira
Sérgio Martins
Friedemann Kleint
Ulf Hermann
hjk
Lars Knoll
Aleix Pol
Kai Koehne
Liang Qi
Rolf Eike Beer
Valery Kotov
Christian Strømme
Frederik Gladhorn
Alex Richardson