source: pacpusframework/trunk/include/Pacpus/PacpusTools/ShMemBase.h@ 18

Last change on this file since 18 was 3, checked in by sgosseli, 12 years ago
  • Add the existing Pacpus files from pacpusdev and pacpuscore.
  • Provide a clean build system based on multiple CMake files.
File size: 1.5 KB
Line 
1/*********************************************************************
2// created: 2006/12/30 - 17:35
3// filename: ShMemBase.h
4//
5// author: Gerald Dherbomez
6//
7// version: $Id: ShMemBase.h 929 2012-03-27 15:49:00Z kurdejma $
8//
9// purpose: Abstract class for shared memory
10*********************************************************************/
11
12#ifndef SHMEMBASE_H
13#define SHMEMBASE_H
14
15class ShMemBase
16{
17public:
18 ShMemBase()
19 {
20 /*printf("ShMemBase::ShMemBase() not implemented !\n");*/
21 }
22
23 virtual ~ShMemBase()
24 {
25 /*printf("ShMemBase::~ShMemBase() not implemented !\n");*/
26 }
27
28 // Use this method to get the data of the shared memory
29 virtual void *read() = 0;
30
31 // Use this method to write data in shared memory
32 virtual void write(void *data, int size, unsigned long offset = 0) = 0;
33
34 // Use this method to wait the incoming of new data
35 // you can specify a timeout in ms to avoid infinite blocking or 0 (infinite)
36 // return true if new data available before the timeout or else false
37 virtual bool wait(unsigned long timeout = 0) = 0;
38
39 // To lock the access to the memory
40 virtual void lockMemory() = 0;
41
42 // To unlock the access to the memory
43 virtual void unlockMemory() = 0;
44
45#ifdef WIN32
46 // Return the event handle under Windows
47 // ... under Linux ?
48 virtual void * getEventIdentifier() = 0;
49#endif
50
51protected:
52 void * shMem_;
53
54private:
55};
56
57#endif // SHMEMBASE_H
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