jnamedpipe.cpp
3.64 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "Stdafx.h"
#include "jnamedpipe.h"
#include "jioexception.h"
#ifdef _WIN32
#include <windows.h>
#include <stdio.h>
#else
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#endif
namespace jshared {
NamedPipe::NamedPipe(std::string name, int mode):
jcommon::Object()
{
jcommon::Object::SetClassName("jshared::NamedPipe");
_name = name;
#ifdef _WIN32
_fd = CreateFile(_name.c_str(),
GENERIC_WRITE|GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
if (_fd == INVALID_HANDLE_VALUE) {
_fd = CreateNamedPipe(_name.c_str(),
PIPE_ACCESS_DUPLEX,
// PIPE_TYPE_MESSAGE|PIPE_READMODE_MESSAGE,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES,
256,
256,
10000,
NULL
);
ConnectNamedPipe(_fd, NULL);
} else {
while (true) {
_fd = CreateFile(_name.c_str(),
GENERIC_WRITE|GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
if (_fd != INVALID_HANDLE_VALUE) {
break;
}
if ((GetLastError() != ERROR_PIPE_BUSY) || !WaitNamedPipe(_name.c_str(), NMPWAIT_USE_DEFAULT_WAIT)) {
throw jio::IOException("Cannot create named pipe");
}
}
}
#else
if ((_fd = open(_name.c_str(), O_RDWR)) < 0) {
if (mkfifo(name.c_str(), mode) != 0) {
throw jio::IOException("Cannot create named pipe");
}
if ((_fd = open(_name.c_str(), O_RDWR)) < 0) {
throw jio::IOException("Cannot create named pipe");
}
}
#endif
_is_closed = false;
}
NamedPipe::~NamedPipe()
{
Close();
}
int NamedPipe::Receive(char *data_, int length_)
{
if (_is_closed == true) {
return 0;
}
#ifdef _WIN32
DWORD r;
ReadFile(_fd, data_, length_, (DWORD *)&r, 0);
return r;
#else
return read(_fd, data_, length_);
#endif
}
int NamedPipe::Send(const char *data_, int length_)
{
#ifdef _WIN32
DWORD r;
WriteFile(_fd, data_, length_, (DWORD *)&r, 0);
return r;
#else
return write(_fd, data_, length_);
#endif
}
bool NamedPipe::IsClosed()
{
return _is_closed;
}
void NamedPipe::Close()
{
if (_is_closed == false) {
_is_closed = true;
#ifdef _WIN32
CloseHandle(_fd);
#else
close(_fd);
#endif
}
}
}