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author | Volker Hilsheimer <volker.hilsheimer@qt.io> | 2020-08-10 16:03:17 +0200 |
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committer | Volker Hilsheimer <volker.hilsheimer@qt.io> | 2020-08-12 23:06:36 +0200 |
commit | 5382bf4220bb76055943678196a84387510ee059 (patch) | |
tree | c1f065c290a64be8573cca3bb18fa228104574d1 /src/gui | |
parent | 53da069b3294b45db05feca751a6d4569eb8c7ab (diff) |
QFileDialog: reduce number of times a file is stat'ed
When opening a QFileDialog with an initial directory that lives on a
disconnected network drive, repeatedly testing that directory consumes
a significant amount of time during which the UI is blocked.
To reduce the amount of file accesses, refactor the initialization code
to allow sharing of a QFileInfo for the default case of operating on a
local and absolute file system. This reduces the amount of stat calls
significantly during startup time, and in case of a disconnected
network shaves of 10-15 seconds of blocked UI, if Windows has already
noticed that the file system is disconnected.
Pick-to: 5.15
Fixes: QTBUG-6039
Change-Id: Ie082e447db214033291455bef2087cd05f366806
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Diffstat (limited to 'src/gui')
0 files changed, 0 insertions, 0 deletions