Commit Graph

3 Commits (d72ea9cbd3c2bde4645745c5aeba7cc052d87f0d)

Author SHA1 Message Date
Thiago Macieira e7998dc187 QCborStreamReader: make sure setDevice() clears the last error
The unit tests weren't running into this problem because the every
setDevice() was preceded by the object being initialized with the exact
same data, so there was never a previous error state. I've only changed
a couple of tests, left the other setDevice() unchanged so we test both
behaviors.

Fixes: QTBUG-71426
Change-Id: I1bd327aeaf73421a8ec5fffd1561a590e3933376
Reviewed-by: Nils Jeisecke <nils.jeisecke@saltation.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2018-11-08 15:19:45 +00:00
Thiago Macieira 91e1356335 QCborStreamReader: use QByteArray directly if possible
QIODevice represents considreable overhead, even with just QBuffer, for
parsing simple things. Benchmarking showed it was spending 25% of the
parsing time inside one QIODevice function or another. So this commit
accomplishes two things:

1) it increases the buffer size from 9 bytes to up to 256, which should
   reduce the number of calls into the QIODevice
2) if the source data is a QByteArray, then use it directly and bypass
   the QIODevice, thus increasing performance considerably

Change-Id: I56b444f9d6274221a3b7fffd150c531c9d28e54b
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2018-06-06 17:48:00 +00:00
Thiago Macieira 81cc806e26 Long live QCborStreamReader!
This is the counterpart of the previous commit.

[ChangeLog][QtCore] Added QCborStreamReader and QCborStreamWriter,
classes for low-level reading and writing of CBOR streams.

Change-Id: Ia0aac2f09e9245339951ffff13c72e4bffdf4a56
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2018-05-27 22:41:49 +00:00