1 | // |
---|
2 | // NamedEvent.h |
---|
3 | // |
---|
4 | // $Id: //poco/1.3/Foundation/include/Poco/NamedEvent.h#1 $ |
---|
5 | // |
---|
6 | // Library: Foundation |
---|
7 | // Package: Processes |
---|
8 | // Module: NamedEvent |
---|
9 | // |
---|
10 | // Definition of the NamedEvent class. |
---|
11 | // |
---|
12 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
---|
13 | // and Contributors. |
---|
14 | // |
---|
15 | // Permission is hereby granted, free of charge, to any person or organization |
---|
16 | // obtaining a copy of the software and accompanying documentation covered by |
---|
17 | // this license (the "Software") to use, reproduce, display, distribute, |
---|
18 | // execute, and transmit the Software, and to prepare derivative works of the |
---|
19 | // Software, and to permit third-parties to whom the Software is furnished to |
---|
20 | // do so, all subject to the following: |
---|
21 | // |
---|
22 | // The copyright notices in the Software and this entire statement, including |
---|
23 | // the above license grant, this restriction and the following disclaimer, |
---|
24 | // must be included in all copies of the Software, in whole or in part, and |
---|
25 | // all derivative works of the Software, unless such copies or derivative |
---|
26 | // works are solely in the form of machine-executable object code generated by |
---|
27 | // a source language processor. |
---|
28 | // |
---|
29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
---|
30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
---|
31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
---|
32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
---|
33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
---|
34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
---|
35 | // DEALINGS IN THE SOFTWARE. |
---|
36 | // |
---|
37 | |
---|
38 | |
---|
39 | #ifndef Foundation_NamedEvent_INCLUDED |
---|
40 | #define Foundation_NamedEvent_INCLUDED |
---|
41 | |
---|
42 | |
---|
43 | #include "Poco/Foundation.h" |
---|
44 | |
---|
45 | |
---|
46 | #if defined(POCO_OS_FAMILY_WINDOWS) && defined(POCO_WIN32_UTF8) |
---|
47 | #include "Poco/NamedEvent_WIN32U.h" |
---|
48 | #elif defined(POCO_OS_FAMILY_WINDOWS) |
---|
49 | #include "Poco/NamedEvent_WIN32.h" |
---|
50 | #elif defined(POCO_OS_FAMILY_UNIX) |
---|
51 | #include "Poco/NamedEvent_UNIX.h" |
---|
52 | #else |
---|
53 | #include "Poco/NamedEvent_VMS.h" |
---|
54 | #endif |
---|
55 | |
---|
56 | |
---|
57 | namespace Poco { |
---|
58 | |
---|
59 | |
---|
60 | class Foundation_API NamedEvent: public NamedEventImpl |
---|
61 | /// An NamedEvent is a global synchronization object |
---|
62 | /// that allows one process or thread to signal an |
---|
63 | /// other process or thread that a certain event |
---|
64 | /// has happened. |
---|
65 | /// |
---|
66 | /// Unlike an Event, which itself is the unit of synchronization, |
---|
67 | /// a NamedEvent refers to a named operating system resource being the |
---|
68 | /// unit of synchronization. |
---|
69 | /// In other words, there can be multiple instances of NamedEvent referring |
---|
70 | /// to the same actual synchronization object. |
---|
71 | /// |
---|
72 | /// NamedEvents are always autoresetting. |
---|
73 | /// |
---|
74 | /// There should not be more than one instance of NamedEvent for |
---|
75 | /// a given name in a process. Otherwise, the instances may |
---|
76 | /// interfere with each other. |
---|
77 | { |
---|
78 | public: |
---|
79 | NamedEvent(const std::string& name); |
---|
80 | /// Creates the event. |
---|
81 | |
---|
82 | ~NamedEvent(); |
---|
83 | /// Destroys the event. |
---|
84 | |
---|
85 | void set(); |
---|
86 | /// Signals the event. |
---|
87 | /// The one thread or process waiting for the event |
---|
88 | /// can resume execution. |
---|
89 | |
---|
90 | void wait(); |
---|
91 | /// Waits for the event to become signalled. |
---|
92 | |
---|
93 | private: |
---|
94 | NamedEvent(); |
---|
95 | NamedEvent(const NamedEvent&); |
---|
96 | NamedEvent& operator = (const NamedEvent&); |
---|
97 | }; |
---|
98 | |
---|
99 | |
---|
100 | // |
---|
101 | // inlines |
---|
102 | // |
---|
103 | inline void NamedEvent::set() |
---|
104 | { |
---|
105 | setImpl(); |
---|
106 | } |
---|
107 | |
---|
108 | |
---|
109 | inline void NamedEvent::wait() |
---|
110 | { |
---|
111 | waitImpl(); |
---|
112 | } |
---|
113 | |
---|
114 | |
---|
115 | } // namespace Poco |
---|
116 | |
---|
117 | |
---|
118 | #endif // Foundation_NamedEvent_INCLUDED |
---|