/[pcsx2_0.9.7]/branch/r3113_0.9.7_beta/3rdparty/wxWidgets/include/wx/unix/pipe.h
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Contents of /branch/r3113_0.9.7_beta/3rdparty/wxWidgets/include/wx/unix/pipe.h

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Revision 32 - (show annotations) (download)
Tue Sep 7 03:29:01 2010 UTC (9 years, 11 months ago) by william
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branching from upstream revision (http://pcsx2.googlecode.com/svn/trunk
): r3113 to
https://svn.netsolutions.dnsalias.com/websvn/ps2/pcsx2/pcsx2_0.9.7/branch/r3113_0.9.7_beta
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: wx/unix/pipe.h
3 // Purpose: wxPipe class
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 24.06.2003 (extracted from src/unix/utilsunx.cpp)
7 // RCS-ID: $Id: pipe.h 40518 2006-08-08 13:06:05Z VS $
8 // Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
9 // Licence: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 #ifndef _WX_UNIX_PIPE_H_
13 #define _WX_UNIX_PIPE_H_
14
15 #include <unistd.h>
16
17 #include "wx/log.h"
18 #include "wx/intl.h"
19
20 // ----------------------------------------------------------------------------
21 // wxPipe: this class encapsulates pipe() system call
22 // ----------------------------------------------------------------------------
23
24 class wxPipe
25 {
26 public:
27 // the symbolic names for the pipe ends
28 enum Direction
29 {
30 Read,
31 Write
32 };
33
34 enum
35 {
36 INVALID_FD = -1
37 };
38
39 // default ctor doesn't do anything
40 wxPipe() { m_fds[Read] = m_fds[Write] = INVALID_FD; }
41
42 // create the pipe, return TRUE if ok, FALSE on error
43 bool Create()
44 {
45 if ( pipe(m_fds) == -1 )
46 {
47 wxLogSysError(_("Pipe creation failed"));
48
49 return FALSE;
50 }
51
52 return TRUE;
53 }
54
55 // return TRUE if we were created successfully
56 bool IsOk() const { return m_fds[Read] != INVALID_FD; }
57
58 // return the descriptor for one of the pipe ends
59 int operator[](Direction which) const { return m_fds[which]; }
60
61 // detach a descriptor, meaning that the pipe dtor won't close it, and
62 // return it
63 int Detach(Direction which)
64 {
65 int fd = m_fds[which];
66 m_fds[which] = INVALID_FD;
67
68 return fd;
69 }
70
71 // close the pipe descriptors
72 void Close()
73 {
74 for ( size_t n = 0; n < WXSIZEOF(m_fds); n++ )
75 {
76 if ( m_fds[n] != INVALID_FD )
77 {
78 close(m_fds[n]);
79 m_fds[n] = INVALID_FD;
80 }
81 }
82 }
83
84 // dtor closes the pipe descriptors
85 ~wxPipe() { Close(); }
86
87 private:
88 int m_fds[2];
89 };
90
91 #if wxUSE_STREAMS && wxUSE_FILE
92
93 #include "wx/wfstream.h"
94
95 // ----------------------------------------------------------------------------
96 // wxPipeInputStream: stream for reading from a pipe
97 // ----------------------------------------------------------------------------
98
99 class wxPipeInputStream : public wxFileInputStream
100 {
101 public:
102 wxPipeInputStream(int fd) : wxFileInputStream(fd) { }
103
104 // return TRUE if the pipe is still opened
105 bool IsOpened() const { return !Eof(); }
106
107 // return TRUE if we have anything to read, don't block
108 virtual bool CanRead() const;
109 };
110
111 #endif // wxUSE_STREAMS && wxUSE_FILE
112
113 #endif // _WX_UNIX_PIPE_H_
114

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