]>
Commit | Line | Data |
---|---|---|
1 | \section{\class{wxCondition}}\label{wxcondition} | |
2 | ||
3 | wxCondition variables correspond to pthread conditions or to Win32 event | |
4 | objects. They may be used in a multithreaded application to wait until the | |
5 | given condition becomes true which happens when the condition becomes signaled. | |
6 | ||
7 | For example, if a worker thread is doing some long task and another thread has | |
8 | to wait until it's finished, the latter thread will wait on the condition | |
9 | object and the worker thread will signal it on exit (this example is not | |
10 | perfect because in this particular case it would be much better to just | |
11 | \helpref{Wait()}{wxthreadwait} for the worker thread, but if there are several | |
12 | worker threads it already makes much more sense). | |
13 | ||
14 | \wxheading{Derived from} | |
15 | ||
16 | None. | |
17 | ||
18 | \wxheading{Include files} | |
19 | ||
20 | <wx/thread.h> | |
21 | ||
22 | \wxheading{See also} | |
23 | ||
24 | \helpref{wxThread}{wxthread}, \helpref{wxMutex}{wxmutex} | |
25 | ||
26 | \latexignore{\rtfignore{\wxheading{Members}}} | |
27 | ||
28 | \membersection{wxCondition::wxCondition}\label{wxconditionconstr} | |
29 | ||
30 | \func{}{wxCondition}{\void} | |
31 | ||
32 | Default constructor. | |
33 | ||
34 | \membersection{wxCondition::\destruct{wxCondition}} | |
35 | ||
36 | \func{}{\destruct{wxCondition}}{\void} | |
37 | ||
38 | Destroys the wxCondition object. | |
39 | ||
40 | \membersection{wxCondition::Broadcast}\label{wxconditionbroadcast} | |
41 | ||
42 | \func{void}{Broadcast}{\void} | |
43 | ||
44 | Broadcasts to all waiting objects. | |
45 | ||
46 | \membersection{wxCondition::Signal}\label{wxconditionsignal} | |
47 | ||
48 | \func{void}{Signal}{\void} | |
49 | ||
50 | Signals the object. | |
51 | ||
52 | \membersection{wxCondition::Wait}\label{wxconditionwait} | |
53 | ||
54 | \func{void}{Wait}{\param{wxMutex\&}{ mutex}} | |
55 | ||
56 | Waits indefinitely. | |
57 | ||
58 | \func{bool}{Wait}{\param{wxMutex\&}{ mutex}, \param{unsigned long}{ sec}, \param{unsigned long}{ nsec}} | |
59 | ||
60 | Waits until a signal is raised or the timeout has elapsed. | |
61 | ||
62 | \wxheading{Parameters} | |
63 | ||
64 | \docparam{mutex}{wxMutex object.} | |
65 | ||
66 | \docparam{sec}{Timeout in seconds} | |
67 | ||
68 | \docparam{nsec}{Timeout nanoseconds component (added to {\it sec}).} | |
69 | ||
70 | \wxheading{Return value} | |
71 | ||
72 | The second form returns if the signal was raised, or FALSE if there was a timeout. | |
73 |