Since the ABI on this platform just uses the ARM procedure call
standard, which is the same standard Unix uses, we can just
copy-and-paste everything, with some adjustments to the assembly code to
compile properly.
In many places, nsTArray::IndexOf is followed by accessing that element
(hopefully with `Elements() + index`, which skips unnecessary bounds checks.)
But this pattern introduces operations that could be avoided:
- IndexOf converts the address of the found element into an index,
- The caller must test for a special `NoIndex` value,
- On success, accesses convert that index back into the original address.
This patch introduces new 'ApplyIf...' functions that combine all these
operations in a more efficient ensemble: If the sought element is found, it is
passed by reference to a given callable object (usually a lambda); if not
found, another callable is invoked.
Depending on what they need, the first callable may take one of these parameter
lists: (), (size_t), (maybe-const elem_type&), (size_t, maybe-const elem_type&).
On top of removing the pointer->index->pointer operations in most cases,
invoking callables directly from ApplyIf is safer, as the array is guaranteed to
be untouched at this time.
Also, being templates taking function objects, in most cases the compiler should
be able to inline and optimize the search and its callables' code.
This patch gives example uses in nsTArray::Contains, and in
FrameProperties::GetInternal, SetInternal.
And FrameProperties::Has now calls Contains, which is more efficient because
the former code would compute an index (or NoIndex), and then convert that index
to a bool; whereas the new code directly produces a bool from within the search
algorithm.
Differential Revision: https://phabricator.services.mozilla.com/D2758
--HG--
extra : moz-landing-system : lando
This restores the old allocation semantics for "append" operations between
Latin1 and UTF-16 while keeping the buffer re-use optimization for the
"assign" cases.
MozReview-Commit-ID: 8JCw3AaCNLN
Differential Revision: https://phabricator.services.mozilla.com/D3582
--HG--
extra : moz-landing-system : lando
Shrinking the buffer is purely a memory footprint optimization and can be
omitted as far as the string semantics visible to the caller are concerned.
Since shrinking is optional, it doesn't make sense to propagate error when
it fails due to OOM.
MozReview-Commit-ID: BuyBLCBmYzZ
Differential Revision: https://phabricator.services.mozilla.com/D3866
--HG--
extra : moz-landing-system : lando
As initially implemented, nsITLSServerSocket by default enabled the use of the
TLS session cache provided by NSS. However, no consumers of nsITLSServerSocket
actually used it. Because it was an option, though, PSM had to jump through some
hoops to a) make it work in the first place and b) not have NSS panic on
shutdown. Furthermore, it meant increased memory usage for every user of Firefox
(and again, nothing actually used the feature, so this was for naught).
In bug 1479918, we discovered that if PSM shut down before Necko, NSS could
attempt to acquire a lock on the session cache that had been deleted, causing a
shutdown hang. We probably should make it less easy to make this mistake in NSS,
but in the meantime bug 1479918 needs uplifting and this workaround is the
safest, most straight-forward way to achieve this.
Differential Revision: https://phabricator.services.mozilla.com/D3919
--HG--
extra : moz-landing-system : lando
The 'x' prefix makes it clearer that these are infallible.
A couple of nsJSID methods are now also infallible.
--HG--
extra : rebase_source : fcce44a00212d6d341afbf3827b31bd4f7355ad5
There are surprisingly many of them.
(Plus a couple of unnecessary checks after `new` calls that were nearby.)
--HG--
extra : rebase_source : 47b6d5d7c5c99b1b50b396daf7a3b67abfd74fc1
This makes it much easier to update existing consumers of
XPCOMUtils.enumerateCategoryEntries to use the category manager directly.
It also, unfortunately, requires updating existing category manager consumers
to use the Services getter in order to avoid ESLint errors.
Differential Revision: https://phabricator.services.mozilla.com/D4278
--HG--
extra : rebase_source : fb9fd9b21db80af472ff6250a2e9a35e8d538147
Nearly all of the consumers of category enumerators require the entry value,
either along with or instead of the name. Including both by default simplifies
things considerably for most consumers, and allows us to remove the XPCOMUtils
wrapper that JS callers typically use to enumerate category entries.
Differential Revision: https://phabricator.services.mozilla.com/D4277
--HG--
extra : rebase_source : 1efe0434e150f08bb9f4d8a4c6f6e993efebf8d8
This allows JS callers to automatically get the correct types during
interation, without having to explicitly specify them.
Differential Revision: https://phabricator.services.mozilla.com/D3728
--HG--
extra : rebase_source : b708f382d8ea571d199c669bfed5b5a7ca9ffac4
extra : histedit_source : 7df6feb82088c8a5ca45dc28fe4d2b852c177fee
This patch adds simple stubs to convert between the nsISimpleEnumerator
iteration protocol and the JS iteration protocol.
Each iterable object is required to have an @@iterator method which returns an
object implementing the iterator protocol. The later objects, by convention,
also have such a method which returns the object itself.
This patch adds both a @@iterator() and entries() methods to
nsISimpleEnumerator. The former returns an iterator which returns plain
nsISupports objects. The latter accepts an IID and queries each element to
that IID before returning it. If any element fails to query, the error is
propagated to the caller.
Differential Revision: https://phabricator.services.mozilla.com/D3727
--HG--
extra : rebase_source : 340eb43a1c5e6d7ae69fa8ee486d66d31d079b14
extra : histedit_source : f3efc6c265851a563968ee410e4626e0540f55c0
The nsISimpleEnumerator contract specifies that GetNext() returns
NS_ERROR_FAILURE when iteration is complete. Several implementations, however,
either return NS_OK and a null result, or return some other error code, when
iteration is complete.
Since my initial implementation of the JS iteration stubs rely on the
contract-defined behavior of GetNext(), these need to be fixed before it can
land.
Differential Revision: https://phabricator.services.mozilla.com/D3726
--HG--
extra : rebase_source : aab0395df52e18ccff5b0a2489a983013bf484b1
extra : histedit_source : a5644f0a88799b4463af9dd01dfec33b373b1f58
In order to allow JS callers to use nsISimpleEnumerator instances with the JS
iteration protocol, we'll need to additional methods to every instance. Since
we currently have a large number of unrelated implementations, it would be
best if they could share the same implementation for the JS portion of the
protocol.
This patch adds a stub nsSimpleEnumerator base class, and updates all existing
implementations to inherit from it. A follow-up will add a new base interface
to this class, and implement the additional functionality required for JS
iteration.
Differential Revision: https://phabricator.services.mozilla.com/D3725
--HG--
extra : rebase_source : ad66d7b266856d5a750c772e4710679fab9434b1
extra : histedit_source : a83ebffbf2f0b191ba7de9007f73def6b9a955b8
This patch allows us to define methods or getters/setters for any of the
current set of well-known symbols. Those are defined by adding the [symbol]
attribute to a method:
[symbol]
Iterator iterator();
which causes the method to define a property with the well-known symbol which
matches its method name (Symbol.iterator, in this case).
Due to the implementation details of the XPIDL parser, this currently does not
support defining a non-symbol function with the same name as a symbol
function:
[symbol]
Iterator iterator();
[binaryname(OtherIterator)]
Thing iterator(in nsIDRef aIID);
throws for a duplicate method name, even though there is no actual conflict.
Differential Revision: https://phabricator.services.mozilla.com/D3724
--HG--
extra : rebase_source : 1385e2da93113306730f7c087fe7385dbe668e91
extra : histedit_source : 3afd9fe38e7cbddc5576c2bd1673496dd623e489
Bogdan Tara
ffxbld
Henri Sivonen
Jan de Mooij
Narcis Beleuzu
Brian Hackett
Paolo Amadini
Nathan Froyd
Margareta Eliza Balazs
Andreea Pavel
Gerald Squelart
Ciure Andrei
David Keeler
Nicholas Nethercote
Kris Maglione
aceman
Landry Breuil