D15426: Avoid QByteArray::remove in AccessManagerReply::readData

[Stefan Brüns]

bruns added a comment.


  In D15426#324486 <https://phabricator.kde.org/D15426#324486>, @fvogt wrote:
  
  > In D15426#324284 <https://phabricator.kde.org/D15426#324284>, @bruns wrote:
  >
  > > For the trivial case, do the clear in `readData()`.
  > >
  > > For the non-trivial case:
  > >
  > > 1. in `readData()`, no memmoves were ever done. Currently, if you have e.g. 50 kB in m_data, you read 2 * 16 kB, and move the remaining 18 kB to the front. You can instead just read 3 * 16 + 2 kB.
  >
  >
  > It's always a cpu/memory trade off. I prefer KISS to premature optimization.
  
  
  if you remove the `|| m_offset * 2 >= m_data.length()`, it gets even simpler, and does less work (especially for the readAll() case). The garbage collection is already done in slotData.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D15426

To: fvogt, #frameworks, elvisangelaccio
Cc: ngraham, bruns, kde-frameworks-devel, michaelh
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