Commit Graph

20 Commits

Author SHA1 Message Date
John Stiles
9c0b79a354 Implement assignment and copy-construction for SkTHashSet/Map.
This will enable us to use SkTHashMap to store our definition maps.

Change-Id: I6017dfa71e1c5e68a20c97e955bb3d3abf347f0d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/323891
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2020-10-08 16:05:52 +00:00
John Stiles
a6841be235 Enable ClangTidy check llvm-namespace-comment.
This fixes a large number of SkSL namespaces which were labeled as if
they were anonymous, and also a handful of other mislabeled namespaces.
Missing namespace-end comments have been added throughout.
A number of diffs are just indentation-related (adjusting 1- or 3-
space indents to 2-space).

Change-Id: I6c62052a0d3aea4ae12ca07e0c2a8587b2fce4ec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308503
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2020-08-06 19:07:52 +00:00
Mike Klein
6b48e62ed2 remove unused mutate() apis
Whether we should shrink at the end of mutate() turns out to be moot.

:)

Change-Id: Ic29df5734e3057f165f695b2d03f8e7eb0eeb4dd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/277299
Auto-Submit: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2020-03-16 20:44:36 +00:00
Mike Klein
16701eecd5 Shrink SkTHashTables
Since we grow when size >= 3/4 cap, shrink when size <= 1/4 cap?

Keeping a minimum table size of 4 preserves the invariant that tables
with non-zero capacity always have at least one empty slot, allowing
find() to determine a particular key is not in the table by stumbling
upon that empty slot on the key's hash chain.  That's effectively what
we're asserting at SkTHash.h:84.

Bug: skia:10041
Change-Id: I4247e4ff155fd11561086547525354365bc69f55
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/277096
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2020-03-16 13:38:10 +00:00
Herb Derby
2fc9fa6d08 Add filter to SkTHashTable and SkTHashMap
Filter takes a bool function where fales means remove the entry.

Change-Id: I768baed6a4e26308f571b0b595ae19aea9d8dca7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259821
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2019-12-12 22:55:35 +00:00
Mike Klein
c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00
Mike Klein
4284ec6ba5 add SkTHashTable::LookupOrNull()
This should help avoid confusion from T**.

Change-Id: I1851baa2a55714721fa935d234b6a4a1c6d6504f
Reviewed-on: https://skia-review.googlesource.com/c/182562
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2019-01-09 18:51:22 +00:00
Florin Malita
053730de73 Fix SkTHashTable dangling values
The element rearrange logic in SkTHashTable::remove() marks empty slots
as such, but does not reset their value.

When breaking out of the rearrange loop, we must also reset the last empty
slot value to avoid retaining unwanted copies.

Change-Id: I8ba2a25088c0aa5210277124e0917224cb295691
Reviewed-on: https://skia-review.googlesource.com/9533
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
2017-03-10 17:28:04 +00:00
Mike Klein
db402cab8b add move semantics to SkTHash*
The more I look at std::unordered_map and co., the less I like them.
I think we might want to bet on SkTHash*.

As a simple first improvement, add move support.
Next comes shrinking, and then I'll start moving over SkTDynamicHash users.

BUG=skia:6053

Change-Id: Ifdb5d713aab66434ca271c7f18a0cbbb0720099c
Reviewed-on: https://skia-review.googlesource.com/5943
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2016-12-13 18:18:47 +00:00
mtklein
c8d1dd48c0 SkTHash: hash from fnptr to functor type
Passing &SkGoodHash to SkTHashMap and SkTHashSet doesn't guarantee that it's actually instantiated.  Using a functor does.

BUG=skia:

Review URL: https://codereview.chromium.org/1405053002
2015-10-15 12:23:02 -07:00
halcanary
96fcdcc219 Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
2015-08-27 07:41:16 -07:00
mtklein
469a3fe6ed Add approxBytesUsed to hashes.
BUG=skia:

Review URL: https://codereview.chromium.org/1280653003
2015-08-07 09:33:37 -07:00
tfarina
567ff2f614 Cleanup: Remove unnecessary double-semicolons.
The entries were found by the following command line:

$ find . -regex ".*\.[cChH]\(pp\)?" | xargs git grep -e ';;' --and --not
-e 'for *(.*;;'

Which is a combination of http://stackoverflow.com/a/3858879 and
http://gitster.livejournal.com/27674.html

BUG=None
R=mtklein@google.com

Review URL: https://codereview.chromium.org/1088763005
2015-04-27 07:01:45 -07:00
mtklein
33d73c39dd SkTHash: remove()
BUG=skia:

Review URL: https://codereview.chromium.org/1057043003
2015-04-21 06:53:56 -07:00
mtklein
fb8307c6b7 Add SkTHashSet::find()
BUG=skia:

Review URL: https://codereview.chromium.org/1058553002
2015-04-01 11:21:27 -07:00
mtklein
02f46cf878 Some usability ideas around SkTHash.
- By default, use new SkGoodHash to hash keys, which is:
    * for 4 byte values, use SkChecksum::Mix,
    * for SkStrings, use SkChecksum::Murmur3 on the data,
    * for other structs, shallow hash the struct with Murmur3.
  - Expand SkChecksum::Murmur3 to support non-4-byte-aligned data.
  - Add const foreach() methods.
  - Have foreach() take a functor, which allows lambdas.

BUG=skia:

Review URL: https://codereview.chromium.org/1021033002
2015-03-20 13:48:42 -07:00
mtklein
2aa1f7e679 Port GrGLCaps over to use SkTHash.
I've written some new hashtable interfaces that should be easier to use,
and I've been trying to roll them out bit by bit, hopefully replacing
SkTDynamicHash, SkTMultiMap, SkTHashCache, etc.

This turns the cache in GrGLCaps::readPixelsSupported() into an SkTHashMap,
mapping the format key to a bool.  Functionally, it's the same.

BUG=skia:

Review URL: https://codereview.chromium.org/948473002
2015-02-20 12:35:32 -08:00
fmalita
79ca081b90 Minimize SkTHash object copying
AKA ref-constify the world.

R=mtklein@google.com

Review URL: https://codereview.chromium.org/919193002
2015-02-12 17:32:49 -08:00
Mike Klein
201c98d08d fix windows build
BUG=skia:

Review URL: https://codereview.chromium.org/917363002
2015-02-12 16:41:57 -05:00
mtklein
979e0eacbd Spin off SkTHashTable, SkTHashMap, SkTHashSet
SkTHashTable is very similar to SkTDynamicHash, except it's generalized to support non-pointer value types.

It doesn't support remove(), just to keep things simple (it's not hard to add).
Instead of an iterator, it has foreach(), again, to keep things simple.

SkTHashMap<K,V> and SkTHashSet<T> build a friendlier experience on top of SkTHashTable.

BUG=skia:

Review URL: https://codereview.chromium.org/925613002
2015-02-12 13:20:08 -08:00