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author | Mike Buland <eichlan@xagasoft.com> | 2012-03-25 20:00:08 +0000 |
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committer | Mike Buland <eichlan@xagasoft.com> | 2012-03-25 20:00:08 +0000 |
commit | 469bbcf0701e1eb8a6670c23145b0da87357e178 (patch) | |
tree | b5b062a16e46a6c5d3410b4e574cd0cc09057211 /src/unstable/fifo.cpp | |
parent | ee1b79396076edc4e30aefb285fada03bb45e80d (diff) | |
download | libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.gz libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.bz2 libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.xz libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.zip |
Code is all reorganized. We're about ready to release. I should write up a
little explenation of the arrangement.
Diffstat (limited to 'src/unstable/fifo.cpp')
-rw-r--r-- | src/unstable/fifo.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/unstable/fifo.cpp b/src/unstable/fifo.cpp new file mode 100644 index 0000000..b0cf1c7 --- /dev/null +++ b/src/unstable/fifo.cpp | |||
@@ -0,0 +1,162 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2007-2011 Xagasoft, All rights reserved. | ||
3 | * | ||
4 | * This file is part of the libbu++ library and is released under the | ||
5 | * terms of the license contained in the file LICENSE. | ||
6 | */ | ||
7 | |||
8 | #include "bu/fifo.h" | ||
9 | #include <errno.h> | ||
10 | #include <sys/types.h> | ||
11 | #include <sys/stat.h> | ||
12 | #include <fcntl.h> | ||
13 | #include <unistd.h> | ||
14 | |||
15 | #include "bu/config.h" | ||
16 | |||
17 | namespace Bu { subExceptionDef( FifoException ) } | ||
18 | |||
19 | Bu::Fifo::Fifo( const Bu::String &sName, int iFlags, mode_t mAcc ) : | ||
20 | iFlags( iFlags ), | ||
21 | iIn( -1 ), | ||
22 | iOut( -1 ) | ||
23 | { | ||
24 | #ifndef WIN32 | ||
25 | if( iFlags&Create ) | ||
26 | { | ||
27 | if( mkfifo( sName.getStr(), mAcc ) ) | ||
28 | { | ||
29 | throw FifoException("Error creating fifo: %s\n", strerror( errno ) ); | ||
30 | } | ||
31 | } | ||
32 | if( iFlags&Read ) | ||
33 | { | ||
34 | iIn = ::open( | ||
35 | sName.getStr(), | ||
36 | O_RDONLY|((iFlags&NonBlock)?O_NONBLOCK:0) | ||
37 | ); | ||
38 | } | ||
39 | if( iFlags&Write ) | ||
40 | { | ||
41 | iOut = ::open( | ||
42 | sName.getStr(), | ||
43 | O_WRONLY | ||
44 | ); | ||
45 | } | ||
46 | #else | ||
47 | #warning Bu::Fifo::Fifo IS A STUB for WIN32!!!! | ||
48 | #endif | ||
49 | } | ||
50 | |||
51 | Bu::Fifo::~Fifo() | ||
52 | { | ||
53 | close(); | ||
54 | } | ||
55 | |||
56 | void Bu::Fifo::close() | ||
57 | { | ||
58 | if( iIn > -1 ) | ||
59 | { | ||
60 | ::close( iIn ); | ||
61 | iIn = -1; | ||
62 | } | ||
63 | if( iOut > -1 ) | ||
64 | { | ||
65 | ::close( iOut ); | ||
66 | iOut = -1; | ||
67 | } | ||
68 | } | ||
69 | |||
70 | Bu::size Bu::Fifo::read( void *pBuf, Bu::size nBytes ) | ||
71 | { | ||
72 | if( iIn < 0 ) | ||
73 | throw FifoException("Fifo not open for reading."); | ||
74 | |||
75 | return TEMP_FAILURE_RETRY( ::read( iIn, pBuf, nBytes ) ); | ||
76 | } | ||
77 | |||
78 | Bu::size Bu::Fifo::write( const void *pBuf, Bu::size nBytes ) | ||
79 | { | ||
80 | if( iOut < 0 ) | ||
81 | throw FifoException("Fifo not open for writing."); | ||
82 | |||
83 | return TEMP_FAILURE_RETRY( ::write( iOut, pBuf, nBytes ) ); | ||
84 | } | ||
85 | |||
86 | Bu::size Bu::Fifo::tell() | ||
87 | { | ||
88 | return -1; | ||
89 | } | ||
90 | |||
91 | void Bu::Fifo::seek( Bu::size ) | ||
92 | { | ||
93 | } | ||
94 | |||
95 | void Bu::Fifo::setPos( Bu::size ) | ||
96 | { | ||
97 | } | ||
98 | |||
99 | void Bu::Fifo::setPosEnd( Bu::size ) | ||
100 | { | ||
101 | } | ||
102 | |||
103 | bool Bu::Fifo::isEos() | ||
104 | { | ||
105 | return false; | ||
106 | } | ||
107 | |||
108 | bool Bu::Fifo::canRead() | ||
109 | { | ||
110 | return (iIn>-1); | ||
111 | } | ||
112 | |||
113 | bool Bu::Fifo::canWrite() | ||
114 | { | ||
115 | return (iOut>-1); | ||
116 | } | ||
117 | |||
118 | bool Bu::Fifo::isReadable() | ||
119 | { | ||
120 | return (iIn>-1); | ||
121 | } | ||
122 | |||
123 | bool Bu::Fifo::isWritable() | ||
124 | { | ||
125 | return (iOut>-1); | ||
126 | } | ||
127 | |||
128 | bool Bu::Fifo::isSeekable() | ||
129 | { | ||
130 | return false; | ||
131 | } | ||
132 | |||
133 | bool Bu::Fifo::isBlocking() | ||
134 | { | ||
135 | #ifndef WIN32 | ||
136 | return ((fcntl( iIn, F_GETFL, 0 )&O_NONBLOCK) == O_NONBLOCK); | ||
137 | #else | ||
138 | #warning Bu::Fifo::isBlocking IS A STUB for WIN32!!!! | ||
139 | #endif | ||
140 | } | ||
141 | |||
142 | void Bu::Fifo::setBlocking( bool bBlocking ) | ||
143 | { | ||
144 | #ifndef WIN32 | ||
145 | if( bBlocking ) | ||
146 | fcntl( iIn, F_SETFL, fcntl( iIn, F_GETFL, 0 )&(~O_NONBLOCK) ); | ||
147 | else | ||
148 | fcntl( iIn, F_SETFL, fcntl( iIn, F_GETFL, 0 )|O_NONBLOCK ); | ||
149 | #else | ||
150 | #warning Bu::Fifo::setBlocking IS A STUB for WIN32!!!! | ||
151 | #endif | ||
152 | } | ||
153 | |||
154 | void Bu::Fifo::flush() | ||
155 | { | ||
156 | } | ||
157 | |||
158 | bool Bu::Fifo::isOpen() | ||
159 | { | ||
160 | return (iIn > -1) || (iOut > -1); | ||
161 | } | ||
162 | |||