Hi Philip, Could you provide that minimal reproduction example? Thanks Axel
> On 18 Feb 2023, at 01:17, Philip Seeger <phi...@c0xc.net> wrote: > > Hi there! > > I'm writing 1M chunks of data to a QProcess in a loop until all input data is > consumed. How do I wait after calling QProcess::write() until all data has > been sent to the process before calling write() again? > > As documented, I have tried to call waitForBytesWritten(-1) after write() but > it only helps in the first iteration; then it does not seem to block until > all bytes are sent to the process. The result is that my program uses almost > 4G of RES memory if a 4G input file is being read and the loop finishes in a > second. Closing QProcess actually sends the data to the process (takes > minutes) and I don't see any progress. > > Internally, Qt seems to use a QByteArray as writeBuffer and I could not find > where it checks if it exceeds a maximum size. > > I believe QProcess storing 4 GB of data in an internal buffer is wrong under > any circumstances. Have I overlooked something in the documentation? How do I > turn this off? > > I can provide a minimal example. > > > Philip > > > > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > https://lists.qt-project.org/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
