Activities

• Monday February 01 2010

  • Push

    03:01

    

    hostilefork pushed e65c1516 to thinker-qt/thinker-qt:master

    on February 01, 2010 03:01

    mandelbrot.pro modifications to build sample, contributed by jeremyf. (I use cmake, not qmake...)

• Friday January 22 2010

  • Push

    05:23

    

    hostilefork pushed 5de9e8e5 to thinker-qt/thinker-qt:master

    on January 22, 2010 05:23

    Interim QSharedPointer::ExternalRefCount workaround for g++ 4.2.

  • Push

    05:02

    

    hostilefork pushed 0db8a753 to thinker-qt/thinker-qt:master

    on January 22, 2010 05:01

    Replace POSIX __assert_fail with more cross-platform call to qt_assert_x

  • Push

    04:11

    

    hostilefork pushed 578c78a1 to thinker-qt/thinker-qt:master

    on January 22, 2010 04:10

    Remove dependency on having hoist library installed. By default the simple definitions in hoistsubstitute.h are used instead, but you can override that with THINKERQT_USE_HOIST.

• Thursday January 21 2010

  • Comment

    23:26

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Ok technically, since update()s are queued...it's probably not that significant to be clearing it at this moment. Would've been better to grab the...

  • Comment

    22:32

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Indeed, it is generally nice to make the Thinker object a friend of the state object! You can imagine that these are member variables of the Think...

  • Comment

    22:12

    

    elj commented on thinker-qt/thinker-qt/458eb50

    It's nice to have friends!

  • Comment

    21:56

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Data passed into a Thinker's constructor and then saved as internal state doesn't need to be protected with a mutex in Thinker-Qt, so this is unnec...

  • Comment

    21:55

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    This concept of "restart" doesn't exist for a Thinker. If you want to do a new computation, you cancel the old one and start a new one. ...

  • Comment

    21:52

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    This routine is just being moved to the MandelbrotWidget file. There were no changes.

  • Comment

    21:52

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    This routine is just being moved from the RenderThread file. There were no changes.

  • Comment

    21:01

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Because a Thinker periodically polls for cancels/pauses in a cooperative-multitasking way, it won't necessarily stop on a dime. So an interesting ...

  • Comment

    20:35

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Taking snapshots is central to Thinker-Qt, and if no write to the calculation state happens while you're holding onto it then it's essentially free...

  • Comment

    20:28

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Deriving from a Thinker parameterized with the calculation state is what you do. Behind the scenes you get the snapshotting and automatic signaling.

  • Comment

    20:24

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    The calculation state is really just QSharedData, but I use "SnapshottableData" because I wanted a polymorphic base class. It's QSharedD...

  • Comment

    20:23

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    (Although git put this line in a weird place, it's the end of the mandelbrot calculation loop.) You might wonder why done() is a signal and not a ...

  • Comment

    20:19

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    In the original Mandelbrot sample, if the GUI thread was unable to process images faster than the RenderThread could produce them, you'd use memory...

  • Comment

    20:10

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    No emit is required here. The unlock will queue a written() signal to those who are listening, and it will be throttled appropriately.

  • Comment

    20:09

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Although the internals of ThinkerQt use QSharedDataPointer and are thread safe with respect to writes, it may be the case that your program's seman...

  • Comment

    20:07

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    If you are nested in a function and have exception handling enabled, the routine pollForStopException() is a shortcut that throws an exception whic...

  • Comment

    20:05

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    wasPauseRequested() covers both the cases of pause and cancellation requests. (Cancellation will work with any Thinker but resuming after a pause ...

  • Comment

    20:02

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    The sooner you can clear() a snapshot pointer, the better. It reduces the risk of a write happening in the background calculation while you're hol...

  • Comment

    20:00

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Riffing off of QtConcurrent's idea of using the word "Future", I use the word "Present" to describe the object handed back from...

  • Comment

    19:56

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    I'm currently following the convention of QFuture, where there is no implicit cancellation when objects holding references to Thinkers are destroye...

  • Comment

    19:53

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    The written() signal is automatically generated when a background calculation writes to its state. So if that calculation is in a tight loop you c...

  • Comment

    19:47

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    The Thinker::Watcher parallels QFutureWatcher by letting you know when data updates are available (although you can take snapshots at any time you ...

  • Comment

    19:43

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    To make sure we build this colormap only once, we now create it in the QWidget and pass it as a parameter. That's because unlike the long-running ...

  • Comment

    19:38

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Thinker-Qt doesn't use signal and slot parameters to exchange data between threads. Instead, it leverages the ability to make copy-on-write "...

  • Comment

    19:28

    

    hostilefork commented on thinker-qt/thinker-qt/458eb50

    Please feel free to comment inline on the source! To do so, click in the line-number area to the left on a line which is indicated as having chang...

  • Push

    19:12

    

    hostilefork pushed 458eb50b to thinker-qt/thinker-qt:master

    on January 21, 2010 19:11

    Mandelbrot sample changes to use Thinker-Qt. (Submitted in a single diff for easy review on gitorious)