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authorFrederik Gladhorn <frederik.gladhorn@digia.com>2013-10-24 12:48:39 +0200
committerFrederik Gladhorn <frederik.gladhorn@digia.com>2013-10-24 12:48:42 +0200
commit840f6a40e6218992b5b9d451ee3c0886a4846c89 (patch)
tree2b808decc7adf5218b810d2de6b45c5a8b4cfc42 /src/corelib/doc/src/threads-basics.qdoc
parent109bf980b37fed405c6c1eb14cb9c83ff897e389 (diff)
parent2e3870fe37d36ccf4bd84eb90e1d5e08ad00c1bc (diff)
Merge remote-tracking branch 'origin/stable' into dev
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@@ -199,31 +199,6 @@
still important.
On Linux, Valgrind and Helgrind can help detect threading errors.
- The anatomy of QThread is quite interesting:
-
- \list
- \li QThread does not live in the new thread where \l{QThread::}{run()} is
- executed. It lives in the old thread.
- \li Most QThread methods are the thread's control interface and are meant to
- be called from the old thread. Do not move this interface to the newly
- created thread using \l{QObject::}{moveToThread()}; i.e., calling
- \l{QObject::moveToThread()}{moveToThread(this)} is regarded as bad
- practice.
- \li \l{QThread::}{exec()} and the static methods
- \l{QThread::}{usleep()}, \l{QThread::}{msleep()},
- \l{QThread::}{sleep()} are meant to be called from the newly created
- thread.
- \li Additional members defined in the QThread subclass are
- accessible by both threads. The developer is responsible for
- coordinating access. A typical strategy is to set the members before
- \l{QThread::}{start()} is called. Once the worker thread is running,
- the main thread should not touch the additional members anymore. After
- the worker has terminated, the main thread can access the additional
- members again. This is a convenient strategy for passing parameters to a
- thread before it is started as well as for collecting the result once it
- has terminated.
- \endlist
-
\section2 Protecting the Integrity of Data
When writing a multithread application, extra care must be taken to avoid