This patch converts HashTable.h from SpiderMonkey style to Gecko style.
It was created by first running `./mach clang-format -p mfbt/HashTable.h` to
fix the whitespace, and then doing manual patch-ups, the most significant of
which were:
- Adding braces around single-statement if/else/for/while blocks.
- Renaming class members to `mFoo` form and arguments to `aFoo` form.
- Converting `typedef Old New` to `using New = Old` throughout.
MozReview-Commit-ID: LJ1emPyuAjK
The main change is that the patch copies js/public/HashTable.h to
mfbt/HashTable.h, and then changes it as follows.
- Changes `js` namespaces to `mozilla` (and removes some now-unnecessary
`mozilla::` qualifiers).
- Changes the default AllocPolicy from the SpiderMonkey-specific
`TempAllocPolicy` to the generic `MallocAllocPolicy`.
- Adds `#include "AllocPolicy.h"` (like mfbt/Vector.h).
- Changes `JS_DEBUG` use to `DEBUG`.
- Minor comment updates, as necessary.
js/public/HashTable.h is now tiny, holding just a few renamings of things from
the `mozilla` namespace into the `js` namespace to minimize churn elsewhere.
(Those renamings keep `TempAllocPolicy` as the default AllocPolicy for
js::Hash{Set,Map}.)
Also, various template specializations had to be moved from the `js` namespace
to the `mozilla` namespace to avoid compile errors.
MozReview-Commit-ID: GS9Qn9YeYDA
--HG--
rename : js/public/HashTable.h => mfbt/HashTable.h
Currently we have three ways of representing hash values.
- uint32_t: used in HashFunctions.h.
- PLDHashNumber: defined in PLDHashTable.{h,cpp}.
- js::HashNumber: defined in js/public/Utility.h.
Functions that create hash values with functions from HashFunctions.h use a mix
of these three types. It's a bit of a mess.
This patch introduces mozilla::HashNumber, and redefines PLDHashNumber and
js::HashNumber as synonyms. It also changes HashFunctions.h to use
mozilla::HashNumber throughout instead of uint32_t.
This leaves plenty of places that still use uint32_t that should use
mozilla::HashNumber or one of its synonyms, but I didn't want to tackle that
now.
The patch also:
- Does similar things for the constants defining the number of bits in each
hash number type.
- Moves js::HashNumber from Utility.h to HashTable.h, which is a better spot
for it. (This required changing the signature of ScrambleHashCode(); that's
ok, it'll get moved by the next patch anyway.)
MozReview-Commit-ID: EdoWlCm7OUC
--HG--
extra : rebase_source : 5b92c0c3560eb56850cd8832f8ee514d25e3c16f
We can't use memcmp to compare PODs, largely because of undefined
padding. The rest of the Pod* functions are fine though, since we're
replicating or zeroing PODs.
MozReview-Commit-ID: LSspAi8qCWw
Add a trait method that AutoCleanLinkedList delegates to for calling
delete on non-refcounted list elements.
--HG--
extra : histedit_source : 5e8b05f348d734d9045621d858caed946853fc02
This class implements a shared memory key-value store that fits into a single
memory mapped segment. All of the runtime data for its instances are stored in
the shared memory region, which means that memory overhead for each instance
in each process is only a few bytes.
Importantly, the key and value strings returned by this class are also
pointers into the shared memory region, which means that once an instance is
created, its memory cannot be unmapped until process shutdown.
For the uses I intend to put it to, this is a reasonable constraint. If we
need to use it for shorter-lived maps in the future, we can add an option to
return non-literal dependent strings that will be copied if they need to be
kept alive long term.
MozReview-Commit-ID: 5BwAaDsb7HS
--HG--
extra : rebase_source : b472fe628018f88a2c4d6b3de4b7143aeca55e14
extra : absorb_source : 5cdeb568cfd2b4a5a767191402e699e61e653b3b
Scalar property names (e.g. IntProperty) are already escaped correctly.
This patch escapes the collection property names (e.g. StartObjectProperty)
as well (and adds test coverage for it).
MozReview-Commit-ID: 68kkjPb2ZN7
--HG--
extra : rebase_source : b42939ccebb71fc73914ff595803b2d6c7df2715
This adds 'CorruptionCanaryForStatics', which as the name implies is suitable
for use in objects that are statically declared. It has a trivial destructor
which allows us to avoid the need for static constructors.
--HG--
extra : amend_source : 27f8eff9ead21fde9f5f5d17f16c322d2c995a27
Same approach as the other bug, mostly replacing automatically by removing
'using mozilla::Forward;' and then:
s/mozilla::Forward/std::forward/
s/Forward</std::forward</
The only file that required manual fixup was TestTreeTraversal.cpp, which had
a class called TestNodeForward with template parameters :)
MozReview-Commit-ID: A88qFG5AccP
This was done automatically replacing:
s/mozilla::Move/std::move/
s/ Move(/ std::move(/
s/(Move(/(std::move(/
Removing the 'using mozilla::Move;' lines.
And then with a few manual fixups, see the bug for the split series..
MozReview-Commit-ID: Jxze3adipUh
... to allow a user to remove() an entry, update the values and
re-insert() it into a tree.
MozReview-Commit-ID: GrSY90Q3ugt
--HG--
extra : rebase_source : 9d8876064f9e3d5b9e4249936a4c999b74fcc9ad
