Mårten Nordheim 19899d88eb Wrap QModelIndex in QSortFilterProxyModel for hash performance ...

The qHash implementation for QModelIndex is not very good resulting in
hundreds of collisions in the hash table. This means most lookups in the
table essentially becomes a linear search. This was 'generically' fixed
for Qt 7, but couldn't be fixed for 6 because of the qHash
implementation is inline and would result in different hash values for
the same QModelIndex in different translation units.

To work around this for this particular instance, we wrap the
QModelIndex in a struct that has the fixed qHash implementation.

Fixes: QTBUG-130309
Pick-to: 6.5
Change-Id: I586fb10cadf73900f3d644f421c37b381224a419
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 1558811a8485f6dcc51a50a2bba0846091ca8bf6)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

2024-10-29 20:51:12 +00:00

.github/workflows

Repair github action workflow

2021-11-10 18:57:33 +01:00

bin

CMake: Don't hard-code "libexec" in qt-configure-module

2024-08-20 13:50:32 +02:00

cmake

CMake: Remove the CMAKE_CXX_COMPILER path from the SBOM

2024-10-29 01:10:26 +00:00

coin

Default qtqa branch to dev if no matching branch found

2024-10-29 17:10:48 +00:00

config.tests

Fix compile-time CRYPTO detection, and detection on MSVC ARM64

2024-09-17 16:43:26 +00:00

dist

Remove dist/README

2024-02-29 15:35:57 +01:00

doc

Docs: Update images for Widgets and remove unused images

2024-10-17 08:00:17 +00:00

examples

wasm: disable network examples

2024-10-19 06:50:22 +00:00

lib

Purge all fonts

2015-08-18 19:59:14 +00:00

libexec

CMake: Allow building all examples as standalone just like tests

2024-03-14 11:44:16 +01:00

LICENSES

Use SPDX identifier to Wintab attribution

2024-06-24 10:03:44 +00:00

mkspecs

wasm: Update Emscripten to 3.1.56

2024-07-12 01:42:29 +00:00

qmake

QFactoryLoader: fix the ability to load symlinks to plugins

2024-10-17 17:01:41 -07:00

src

Wrap QModelIndex in QSortFilterProxyModel for hash performance

2024-10-29 20:51:12 +00:00

tests

QFileSystemModel on Windows: consistently trim spaces and dots

2024-10-29 17:42:12 +00:00

util

Add type annotations to LocaleScanner

2024-10-28 10:02:22 +00:00

.cmake.conf

Bump version to 6.8.1

2024-09-19 07:20:47 +03:00

.gitattributes

Give batch files CRLF line endings

2020-11-04 15:02:29 +00:00

.gitignore

Git ignore Visual Studio CMake build directories

2023-11-24 23:42:05 +01:00

.lgtm.yml

Skip LGTM analysis for the bootstrap library and tools

2020-07-16 01:04:34 +02:00

.tag

…

CMakeLists.txt

cmake: add _extra_files IDE target from heuristics

2024-04-12 08:36:01 +08:00

config_help.txt

CMake: Change SBOM generation to be enabled by default (mostly)

2024-10-21 08:37:20 +00:00

configure

Change configure license

2024-02-02 15:23:02 +00:00

configure.bat

configure.bat: Fix errors on Windows

2024-03-05 11:56:24 +01:00

configure.cmake

Fix compile-time CRYPTO detection, and detection on MSVC ARM64

2024-09-17 16:43:26 +00:00

dependencies.yaml

Re-add dependencies.yaml now that qt5.git wip/qt6 builds fine

2019-09-18 13:19:31 +02:00

licenseRule.json

Include relevant Unicode Inc. copyright line in generated data files

2024-08-31 08:56:42 +00:00

qt_cmdline.cmake

configure: accept -c++std c++17 again

2024-06-13 20:40:06 +00:00

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