X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/36edded90cf3d4d11dc55362b332733b79e8f54d..3f93aa54a900d873977d8bdfcc9cededaaa0bee8:/docs/latex/wx/conditn.tex diff --git a/docs/latex/wx/conditn.tex b/docs/latex/wx/conditn.tex index 47cc257e81..a58d8b5ff4 100644 --- a/docs/latex/wx/conditn.tex +++ b/docs/latex/wx/conditn.tex @@ -1,6 +1,18 @@ \section{\class{wxCondition}}\label{wxcondition} -Condition class for code protection in multithreaded applications. +wxCondition variables correspond to pthread conditions or to Win32 event +objects. They may be used in a multithreaded application to wait until the +given condition becomes true which happens when the condition becomes signaled. + +For example, if a worker thread is doing some long task and another thread has +to wait until it is finished, the latter thread will wait on the condition +object and the worker thread will signal it on exit (this example is not +perfect because in this particular case it would be much better to just +\helpref{Wait()}{wxthreadwait} for the worker thread, but if there are several +worker threads it already makes much more sense). + +Once the thread(s) are signaled, the condition then resets to the not +signaled state, ready to fire again. \wxheading{Derived from} @@ -42,18 +54,16 @@ Signals the object. \membersection{wxCondition::Wait}\label{wxconditionwait} -\func{void}{Wait}{\param{wxMutex\&}{ mutex}} +\func{void}{Wait}{\void} Waits indefinitely. -\func{bool}{Wait}{\param{wxMutex\&}{ mutex}, \param{unsigned long}{ sec}, \param{unsigned long}{ nsec}} +\func{bool}{Wait}{\param{unsigned long}{ sec}, \param{unsigned long}{ nsec}} Waits until a signal is raised or the timeout has elapsed. \wxheading{Parameters} -\docparam{mutex}{wxMutex object.} - \docparam{sec}{Timeout in seconds} \docparam{nsec}{Timeout nanoseconds component (added to {\it sec}).}