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| author | Marc Mutz <marc.mutz@kdab.com> | 2019-07-10 19:40:06 +0200 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@kdab.com> | 2019-07-12 16:43:32 +0200 |
| commit | 0fec7417ca305e52cfd1382b3f9f8e4adcb597de (patch) | |
| tree | fb64708e431e298be05f5eb564cb8b4c76f63cf9 /src/network/socket/qnativesocketengine_unix.cpp | |
| parent | 2d2e16d3ef267d0a130f84fc1f0a67476545a2b1 (diff) | |
QHash: optimize equality operator
- First compare the d-pointer before dipping into *d
- Keep a running count as we calculate thisEqualRange, as
std::distance() on QHash::iterator is very expensive.
- Skip the pointless first comparison of the unadvanced
iterator's key() with itself (found by Mårten Nordheim)
Also rename (it, thisEqualRangeEnd) → (thisEqualRangeStart, it),
to keep advancing `it`, which is more natural than advancing
an `end` and later resetting it = end.
Change-Id: I2c27c071b9ee23425a763328402dad9efee4cbd0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Diffstat (limited to 'src/network/socket/qnativesocketengine_unix.cpp')
0 files changed, 0 insertions, 0 deletions