diff options
author | Marc Mutz <marc.mutz@kdab.com> | 2021-07-12 08:17:07 +0200 |
---|---|---|
committer | Marc Mutz <marc.mutz@kdab.com> | 2021-07-13 16:37:19 +0200 |
commit | 16db1d21659793909bd1719805d7ff8de6906f88 (patch) | |
tree | 26ed1fca97b431deaace3081d43eeab56ff9ac17 /src/corelib/tools | |
parent | 564f07086cfeb1ec8065874b4a46a5c5ab904a31 (diff) |
QDuplicateTracker: reserve() for at least Prealloc elements
We have space for so many elements, so reserve()ing anything less
makes no sense.
Pick-to: 6.2 6.1 5.15
Change-Id: I84d692b10a6a491c37661f84aa3fdd9af43d71e5
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: MÃ¥rten Nordheim <marten.nordheim@qt.io>
Diffstat (limited to 'src/corelib/tools')
-rw-r--r-- | src/corelib/tools/qduplicatetracker_p.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/corelib/tools/qduplicatetracker_p.h b/src/corelib/tools/qduplicatetracker_p.h index 47c97100f9..5cfa19e03b 100644 --- a/src/corelib/tools/qduplicatetracker_p.h +++ b/src/corelib/tools/qduplicatetracker_p.h @@ -81,9 +81,10 @@ class QDuplicateTracker { char buffer[bufferSize(Prealloc)]; std::pmr::monotonic_buffer_resource res{buffer, sizeof buffer}; - std::pmr::unordered_set<T, QHasher<T>> set{&res}; + std::pmr::unordered_set<T, QHasher<T>> set{Prealloc, &res}; #else - QSet<T> set; + static QSet<T> makeQSet() { QSet<T> r; r.reserve(Prealloc); return r; } + QSet<T> set = makeQSet(); int setSize = 0; #endif Q_DISABLE_COPY_MOVE(QDuplicateTracker); |