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
|
// IPC_SAP.cpp
// $Id$
#define ACE_BUILD_DLL
#include "ace/IPC_SAP.h"
ACE_ALLOC_HOOK_DEFINE(ACE_IPC_SAP)
void
ACE_IPC_SAP::dump (void) const
{
ACE_TRACE ("ACE_IPC_SAP::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
ACE_DEBUG ((LM_DEBUG, "handle_ = %d", this->handle_));
ACE_DEBUG ((LM_DEBUG, "\npid_ = %d", this->pid_));
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}
// Cache for the process ID.
pid_t ACE_IPC_SAP::pid_ = 0;
// This is the do-nothing constructor. It does not perform a
// ACE_OS::socket system call.
ACE_IPC_SAP::ACE_IPC_SAP (void)
: handle_ (ACE_INVALID_HANDLE)
{
// ACE_TRACE ("ACE_IPC_SAP::ACE_IPC_SAP");
}
// Make the HANDLE_ available for asynchronous I/O (SIGIO), urgent
// data (SIGURG), or non-blocking I/O (ACE_NONBLOCK).
int
ACE_IPC_SAP::enable (int signum) const
{
ACE_TRACE ("ACE_IPC_SAP::enable");
// First-time in initialization.
if (ACE_IPC_SAP::pid_ == 0)
ACE_IPC_SAP::pid_ = ACE_OS::getpid ();
#if defined(ACE_WIN32)
switch (signum)
{
case ACE_NONBLOCK:
// nonblocking argument (1)
// blocking: (0)
{
u_long nonblock = 1;
return ACE_OS::ioctl (this->handle_, FIONBIO, &nonblock);
}
default:
errno = ENOTSUP;
return -1;
}
#else
switch (signum)
{
#if defined (SIGURG)
case SIGURG:
#if defined (F_SETOWN)
if (ACE_OS::fcntl (this->handle_, F_SETOWN, ACE_IPC_SAP::pid_) < 0)
return -1;
#else
return -1;
#endif /* F_SETOWN */
break;
#endif /* SIGURG */
case SIGIO:
#if defined (F_SETOWN) && defined (FASYNC)
if (ACE_OS::fcntl (this->handle_, F_SETOWN, ACE_IPC_SAP::pid_) == -1)
return -1;
if (ACE::set_flags (this->handle_, FASYNC) == -1)
return -1;
#else
return -1;
#endif /* F_SETOWN && FASYNC */
break;
case ACE_NONBLOCK:
if (ACE::set_flags (this->handle_, ACE_NONBLOCK) == ACE_INVALID_HANDLE)
return -1;
break;
default:
return -1;
}
#endif /* !ACE_WIN32 */
return 0;
}
// Restore the IPC_SAPet by turning off synchronous I/O or urgent
// delivery.
int
ACE_IPC_SAP::disable (int signum) const
{
ACE_TRACE ("ACE_IPC_SAP::disable");
#if defined(ACE_WIN32)
switch (signum)
{
case ACE_NONBLOCK:
// nonblocking argument (1)
// blocking: (0)
{
u_long nonblock = 0;
return ACE_OS::ioctl (this->handle_, FIONBIO, &nonblock);
}
default:
errno = ENOTSUP;
return -1;
}
#else
switch (signum)
{
#if defined (SIGURG)
case SIGURG:
#if defined (F_SETOWN)
if (ACE_OS::fcntl (this->handle_, F_SETOWN, 0) == -1)
return -1;
break;
#else
return -1;
#endif /* F_SETOWN */
#endif /* SIGURG */
case SIGIO:
#if defined (F_SETOWN) && defined (FASYNC)
if (ACE_OS::fcntl (this->handle_, F_SETOWN, 0) == -1)
return -1;
if (ACE::clr_flags (this->handle_, FASYNC) == -1)
return -1;
break;
#else
return -1;
#endif /* F_SETOWN && FASYNC */
case ACE_NONBLOCK:
if (ACE::clr_flags (this->handle_, ACE_NONBLOCK) == -1)
return -1;
break;
default:
return -1;
}
#endif /* !ACE_WIN32 */
return 0;
}
|
