| Commit message (Collapse) | Author | Age | Files | Lines |
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Save some instructions when converting a Stirng to a property
key.
Change-Id: Ide05ba8a54b504f5e606bdcdab53a2a0afeb9436
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
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Rename
bool String::compare(const String *other)
to the slightly more self-explaining
bool String::lessThan(const String *other)
as the returned boolean value does not relate to equality.
Change-Id: Ia7b1a7f47beca0659fb199c0c9d49951468ad03d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Change-Id: I8c4e5433be8a6306ace36393131245e846efa6ba
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Turns out that the overloading of vtable methods and regular
ones is problematic in some cases. So let's rather make it explicit
which methods are part of the vtable, and which aren't.
Change-Id: Ifee32a26104d30f3c82bca8b5a9cdea2d4f4f526
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Allow for nullptr entries in the vtable. To nevertheless
get some decent error checking if one of the methods is
reimplemented, use a base class for Managed that contains
a full set of the vtable entries all being nullptr's.
Change-Id: Ibc53973b539f87331e8e465a6c44436a30acbefd
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Get rid of makeIdentifier(), as toPropertyKey() will take
care of it.
Rename identifier() to propertyKey() and check that the
key is valid.
Remove String/StringOrSymbol::asArrayIndex(), we don't need it
anymore.
Change-Id: I3c490fabc1475c9ea288b49b1638b6fa1bc237b7
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change all uses of Identifier to use the new PropertyKey class
and get rid of Identifier.
Change-Id: Ib7e83b06a3c923235e145b6e083fe980dc240452
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This is required to support Proxy properly, and at the
same time fixes a couple of test failures.
The new interface also replaces the old query and
queryIndexed virtual interfaces, as those where doing
a subset of what getOwnProperty does.
Change-Id: I750e366b475ce971d6d9edf35fa17b7a2b07f771
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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String::calculateHashValue() does not compile for char with
QT_NO_CAST_FROM_ASCII since ch == QLatin1Char('@') will try to construct
a QChar. Use toUInt() to obtain the ASCII code.
The build breakage ocurred in Qt Quick Controls 2.
Change-Id: I03b1763d4ca5654edbca849fe2836aac05098331
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Change-Id: I5fde731b3a1a6d7c15154881ed82549b2800d104
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Added basic infrastructure to create symbols and convert them
back to strings. In addition, storing and retrieving of symbol
based properties in Objects works.
Change-Id: I185f7aa46e7afa19db5a801102142892e03b7bf1
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Implemented by storing a backpointer to the Heap object
in the identifier.
Since identifiers now point back to their originating
String or Symbol, we can now easily mark all identifiers
that are still in use and collect those that aren't.
Since Identifiers are 64bit also add support for holding an
array index in there. With that an identifier can describe
any kind of property that can be accessed in an object. This
helps speed up and simplify some code paths.
To make this possible, we need to register all
IdentifierHash instances with the identifier table, so that
we can properly mark those identifiers.
Change-Id: Icadbaf5712ab9d252d4e71aa4a520e86b14cd2a0
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This is needed for symbol support.
Change-Id: I83db21f232168710d18999fd97d912016e86d630
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This introduces a common base class for Strings and Symbols
giving us a unified approach to handling object properties for
both.
Change-Id: Ic9e5a18b084c8b730e134db990f101d47af224e3
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change-Id: Ib25c08027013217657beb2675dafa9a8c85cbaf9
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This is required to be able to turn the internal class into
something that lives on the GC heap.
Change-Id: Ie4318588d420743b1e1ab1cd596a1c9d153eb793
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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From now on we prefer nullptr instead of 0 to clarify cases where
we are assigning or testing a pointer rather than a numeric zero.
Also, replaced cases where 0 was passed as Qt::KeyboardModifiers
with Qt::NoModifier (clang-tidy replaced them with nullptr, which
waas wrong, so it was just as well to make the tests more readable
rather than to revert those lines).
Change-Id: I4735d35e4d9f42db5216862ce091429eadc6e65d
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Handle startsWithUpper() for complex sub-strings
Change-Id: Ia7494a880612761ee3caf9113c2ac5faa4edd182
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Use it in regexp matching. There's probably other places where
we should use this as well.
Change-Id: Ie2774acff0a5ec7b1c26c564fa40e65fecea29d4
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Saves some memory for many cases, and will allow re-using the
String itself as an identifier
Change-Id: I462d63bc6f113dff1dce0de28ee4eea3949a4b95
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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If char is signed on the platform and the char * array contained
non ascii values, this would actually miscompute the hash value
Change-Id: Id26891482831bcc23c5ce61e8094a85b53d00a1c
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Remove code for older versions and streamline #ifdefs.
Remove the helpers macros Q_STATIC_ASSERT_FOR_SANE_COMPILERS
and V4_ASSERT_IS_TRIVIAL.
Task-number: QTBUG-40658
Task-number: QTBUG-51673
Change-Id: Ifa4fab653b10ce7858739adef08364cddc6507cf
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Doing the marking of objects in a function instead of
using the table seems to be somewhat faster.
Change-Id: I9ec00cc0264f9a15c69b285db493bee31d99bf96
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
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This is already done at the top of the method. Also mark the slow path
of makeIdentifier as never-inline, so it won't bloat functions when
makeIdentifier is inlined.
Change-Id: I707f9b82f555314bea154014d8cbb876b26d0d4b
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Change-Id: I61ab3d0bd8cc02f640c60c037226eace09ec09ba
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This reverts commit 3f9367cb32533b691cb8c761213f21a524e3d1cb.
QtScxml adapted to new API.
Task-number: QTBUG-60938
Change-Id: I417b604ceb9949ee3c0197ac9f88efdbe53ebe48
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Conflicts:
.qmake.conf
src/qml/jsruntime/qv4argumentsobject.cpp
src/qml/jsruntime/qv4arraydata.cpp
src/qml/jsruntime/qv4context.cpp
src/qml/jsruntime/qv4context_p.h
src/qml/jsruntime/qv4errorobject.cpp
src/qml/jsruntime/qv4functionobject.cpp
src/qml/jsruntime/qv4internalclass.cpp
src/qml/jsruntime/qv4lookup.cpp
src/qml/jsruntime/qv4managed.cpp
src/qml/jsruntime/qv4managed_p.h
src/qml/jsruntime/qv4object.cpp
src/qml/jsruntime/qv4object_p.h
src/qml/jsruntime/qv4qmlcontext.cpp
src/qml/jsruntime/qv4runtime.cpp
src/qml/jsruntime/qv4vme_moth.cpp
src/qml/memory/qv4heap_p.h
src/qml/memory/qv4mm.cpp
src/qml/memory/qv4mm_p.h
src/qml/memory/qv4mmdefs_p.h
src/quick/scenegraph/util/qsgdistancefieldutil.cpp
src/quick/scenegraph/util/qsgdistancefieldutil_p.h
tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
Change-Id: I7ed925d4f5d308f872a58ddf51fdce0c8494ec9c
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QtScxml was using internal API in v4, that has changed. Restore the
old function signature until all it's uses have been cleaned up.
Task-number: QTBUG-60938
Change-Id: Ie40c09da9df9e5684972669cd9a511a868b920a4
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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We can always get the pointer through the internalClass.
Change-Id: If68432845e7c67da70d9e19aef1a90ebe1e6056b
Reviewed-by: Robin Burchell <robin.burchell@crimson.no>
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We can easily do this now that Managed has a pointer to an
internal class (which always has a back pointer to the
ExecutionEngine).
Remove the extra engine pointer from ExecutionContext, and clean
up tow methods in String.
Change-Id: I98d750b1afbdeadf42e66ae0c92c48db1a7adc31
Reviewed-by: Robin Burchell <robin.burchell@crimson.no>
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And do not store the vtable in Heap::Base anymore. This change
makes the internal class the main distinguishing feature
of all garbage collected objects.
It also saves one pointer on all Objects. No measurable
impact on runtime performance.
Change-Id: I040a28b7581b993f1886b5219e279173dfa567e8
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change-Id: I43ddcb4842e501cbea8a950ab6ffa2d906014efd
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This is required to be able to implement concurrent or
incremental garbage collection.
Change-Id: Ib3c5eee3779ca2ee08a57cd3961dbcb0537bbb54
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Let the destroy() method in QV4::String clean up the
unmanaged heap size instead of having a special hook in
the code that sweeps the GC heap.
Change-Id: I989ee99604f0cc67b896d3acc94e200dd5e56a60
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change-Id: Ib044be254dbb41bd9fb4a6e0baa3bd3c007e6a2a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Check that the destroy() method of Heap::Base was called when a Managed
object needs destruction. This checks if a call to the parent's
destroy() method was accidentally omitted.
Change-Id: Id025ecd6d4744bf3eab23503fbe317ed2a461138
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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GCC6 might dead-store-eliminate out our secret write to Base::mmdata,
because it expects all memory content to be "undefined" before
constructor calls. Clang might take the same approach if the constructor
of Heap::Object is removed.
By making these structs trivial, it also makes them memcpy-able.
Change-Id: I055b2ad28311b997fbe059849ebda4d5894eaa9b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change-Id: Ia8eda67c9d59069d3a64363699720a79ba1348a1
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This removes the destructors of subclasses of Base, making them nearly
trivial.
Change-Id: Ia6f7d467e87899b5ad37b8709a8f633a51689d59
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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This change also adds a check to the d() calls for Managed, verifies
that the object has been initialized. This is only done for debug
builds.
To prevent other code from tripping the check, a number of other classes
are either marked as trivial, or do initialization in the constructors.
Because of template function changes in them memory manager (those now
call init() instead of in-place new), String has an extra parameter
to force it to temporarily use an old/unmodified template function.
Change-Id: I8c35161ce7680835d830638b6d21498c5129b02b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Notably into QHashedString(Ref)::computeHash.
Change-Id: Icf8487ed3da0f117cb0911f20c9b88498f61510a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Reduces the number of instructions of IdentifierTable::identifier by ~15%.
Change-Id: I5a234fa96a6ee3e7202150ded512d1be0b36560d
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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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>
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Task-number: QTBUG-48594
Change-Id: Ifc207938de7f0c8995fc712df92665f222612647
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
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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
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... 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>
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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>
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The union in QV4::Value is used to do type punning. In C++, this is
compiler-defined behavior. For example, Clang and GCC will try to detect
it and try to do the proper thing. However, it can play havoc with Alias
Analysis, and it is not guaranteed that some Undefined Behavior (or
Compiler depenedent behavior) might occur.
The really problematic part is the struct inside the union: depending on
the calling convention and the register size, it results in some
exciting code. For example, the AMD64 ABI specifies that a struct of two
values of INTEGER class can be passed in separate registers when doing a
function call. Now, if the AA in the compiler looses track of the fact
that the tag overlaps with the double, you might get:
ecx := someTag
... conditional jumps
double_case:
rdx := xorredDoubleValue
callq someWhere
If the someWhere function checks for the tag first, mayhem ensues: the
double value in rdx does not overwrite the tag that is passed in ecx.
Changing the code to do reinterpret_cast<>s might also give problems
on 32bit architectures, because there is a double, whose size is not the
same as the size of the tag, which could confuse AA.
So, to fix this, the following is changed:
- only have a quint64 field in the QV4::Value, which has the added
benefit that it's very clear for the compiler that it's a POD
- as memcpy is the only approved way to ensure bit-by-bit "conversion"
between types (esp. FP<->non-FP types), change all conversions to use
memcpy. Use bitops (shift/and/or) for anything else.
- only use accessor functions for non-quint64 values
As any modern compiler has memcpy as an intrinsic, the call will be
replaced with one or a few move instructions. The accessor functions
also get inlined, the bitops get optimized, so in all cases the compiler
can generate the most compact code possible.
This patch obsoletes f558bc48585c69de36151248c969a484a969ebb4 (which had
the exact aliassing problem of the double and the tag as described
above).
Change-Id: I60a39d8564be5ce6106403a56a8de90943217006
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>
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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>
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Also add some safety checks in case the heap pointer
inside the Value is 0.
Change-Id: I61d37410c10c34f197175dbbd9ea8fa8c95c12cd
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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