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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// MEM_IO.cpp
// $Id$
#include "ace/MEM_IO.h"
#include "ace/Handle_Set.h"
#if defined (ACE_LACKS_INLINE_FUNCTIONS)
#include "ace/MEM_IO.i"
#endif /* ACE_LACKS_INLINE_FUNCTIONS */
ACE_RCSID(ace, MEM_IO, "$Id$")
ACE_ALLOC_HOOK_DEFINE(ACE_MEM_IO)
void
ACE_MEM_IO::dump (void) const
{
ACE_TRACE ("ACE_MEM_IO::dump");
}
// Allows a client to read from a socket without having to provide
// a buffer to read. This method determines how much data is in the
// socket, allocates a buffer of this size, reads in the data, and
// returns the number of bytes read.
ssize_t
ACE_MEM_IO::send (const ACE_Message_Block *message_block,
const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::send");
ssize_t len = message_block->total_length ();
if (len != 0)
{
char *buf = ACE_static_cast (char *, this->acquire_buffer (len));
ssize_t n = 0;
while (message_block != 0)
{
ACE_OS::memcpy (buf + n,
message_block->rd_ptr (),
message_block->length ());
n += message_block->length ();
if (message_block->cont ())
message_block = message_block->cont ();
else
message_block = message_block->next ();
}
off_t offset = this->set_buf_len (buf, len);
if (ACE::send (this->get_handle (),
(const char *) &offset,
sizeof (offset),
0,
timeout) != sizeof (offset))
{
// unsucessful send, release the memory in the shared-memory.
this->release_buffer (buf);
return -1;
}
return len;
}
return 0;
}
#if 0
ssize_t
ACE_MEM_IO::recvv (iovec *io_vec,
const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::recvv");
#if defined (FIONREAD)
ACE_Handle_Set handle_set;
handle_set.reset ();
handle_set.set_bit (this->get_handle ());
io_vec->iov_base = 0;
// Check the status of the current socket.
switch (ACE_OS::select (int (this->get_handle ()) + 1,
handle_set,
0, 0,
timeout))
{
case -1:
return -1;
/* NOTREACHED */
case 0:
errno = ETIME;
return -1;
/* NOTREACHED */
default:
// Goes fine, fallthrough to get data
break;
}
u_long inlen;
if (ACE_OS::ioctl (this->get_handle (),
FIONREAD,
(u_long *) &inlen) == -1)
return -1;
else if (inlen > 0)
{
ACE_NEW_RETURN (io_vec->iov_base,
char[inlen],
-1);
io_vec->iov_len = this->recv (io_vec->iov_base,
inlen);
return io_vec->iov_len;
}
else
return 0;
#else
ACE_UNUSED_ARG (io_vec);
ACE_UNUSED_ARG (timeout);
ACE_NOTSUP_RETURN (-1);
#endif /* FIONREAD */
}
// Send N char *ptrs and int lengths. Note that the char *'s precede
// the ints (basically, an varargs version of writev). The count N is
// the *total* number of trailing arguments, *not* a couple of the
// number of tuple pairs!
ssize_t
ACE_MEM_IO::send (size_t n, ...) const
{
ACE_TRACE ("ACE_MEM_IO::send");
va_list argp;
size_t total_tuples = n / 2;
iovec *iovp;
#if defined (ACE_HAS_ALLOCA)
iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
#else
ACE_NEW_RETURN (iovp,
iovec[total_tuples],
-1);
#endif /* !defined (ACE_HAS_ALLOCA) */
va_start (argp, n);
for (size_t i = 0; i < total_tuples; i++)
{
iovp[i].iov_base = va_arg (argp, char *);
iovp[i].iov_len = va_arg (argp, ssize_t);
}
ssize_t result = ACE_OS::sendv (this->get_handle (),
iovp,
total_tuples);
#if !defined (ACE_HAS_ALLOCA)
delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
va_end (argp);
return result;
}
// This is basically an interface to ACE_OS::readv, that doesn't use
// the struct iovec_Base explicitly. The ... can be passed as an arbitrary
// number of (char *ptr, int len) tuples. However, the count N is the
// *total* number of trailing arguments, *not* a couple of the number
// of tuple pairs!
ssize_t
ACE_MEM_IO::recv (size_t n, ...) const
{
ACE_TRACE ("ACE_MEM_IO::recv");
va_list argp;
size_t total_tuples = n / 2;
iovec *iovp;
#if defined (ACE_HAS_ALLOCA)
iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
#else
ACE_NEW_RETURN (iovp,
iovec[total_tuples],
-1);
#endif /* !defined (ACE_HAS_ALLOCA) */
va_start (argp, n);
for (size_t i = 0; i < total_tuples; i++)
{
iovp[i].iov_base = va_arg (argp, char *);
iovp[i].iov_len = va_arg (argp, ssize_t);
}
ssize_t result = ACE_OS::recvv (this->get_handle (),
iovp,
total_tuples);
#if !defined (ACE_HAS_ALLOCA)
delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
va_end (argp);
return result;
}
#endif /* 0 */
|
