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
203
204
205
206
207
208
209
210
211
212
213
|
// Handle_Set.cpp
// $Id$
/* Wrapper for the ACE_HANDLE set abstraction. */
#define ACE_BUILD_DLL
#include "ace/Log_Msg.h"
#include "ace/Handle_Set.h"
#if !defined (__ACE_INLINE__)
#include "ace/Handle_Set.i"
#endif /* __ACE_INLINE__ */
ACE_ALLOC_HOOK_DEFINE(ACE_Handle_Set)
void
ACE_Handle_Set::dump (void) const
{
ACE_TRACE ("ACE_Handle_Set::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
ACE_DEBUG ((LM_DEBUG, "[ "));
ACE_DEBUG ((LM_DEBUG, "size_ = %d", this->size_));
ACE_DEBUG ((LM_DEBUG, "\nmax_handle_ = %d", this->max_handle_));
#if defined (ACE_WIN32)
for (size_t i = 0; i < this->mask_.fd_count + 1; i++)
ACE_DEBUG ((LM_DEBUG, " %x ", this->mask_.fd_array[i]));
#else /* !ACE_WIN32 */
for (ACE_HANDLE i = 0; i < this->max_handle_ + 1; i++)
if (this->is_set (i))
ACE_DEBUG ((LM_DEBUG, " %d ", i));
#endif /* ACE_WIN32 */
ACE_DEBUG ((LM_DEBUG, " ]"));
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}
#if defined (ACE_HAS_BROKEN_BITSHIFT)
static const ACE_UINT32 MSB_MASK = ~(ACE_UINT32 (1) << ACE_UINT32 (NFDBITS - 1));
#else
// This needs to go here to avoid overflow problems on some compilers.
static const ACE_UINT32 MSB_MASK = ~(1 << (NFDBITS - 1));
#endif /* ACE_HAS_BROKEN_BITSHIFT */
// Table that maps bytes to counts of the enabled bits.
const char ACE_Handle_Set::nbits_[256] =
{
0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8,
};
// Constructor, initializes the bitmask to all 0s.
ACE_Handle_Set::ACE_Handle_Set (void)
{
ACE_TRACE ("ACE_Handle_Set::ACE_Handle_Set");
this->reset ();
}
ACE_Handle_Set::ACE_Handle_Set (const ACE_FD_SET_TYPE &fd_mask)
{
ACE_TRACE ("ACE_Handle_Set::ACE_Handle_Set");
this->reset ();
ACE_OS::memcpy ((void *) &this->mask_, (void *) &fd_mask, sizeof
this->mask_);
#if !defined(ACE_WIN32)
this->sync (ACE_Handle_Set::MAXSIZE);
#endif /* !ACE_WIN32 */
}
// Counts the number of bits enabled in N. Uses a table lookup to
// speed up the count.
int
ACE_Handle_Set::count_bits (unsigned long n) const
{
ACE_TRACE ("ACE_Handle_Set::count_bits");
return (ACE_Handle_Set::nbits_[n & 0xff] + ACE_Handle_Set::nbits_[(n >> 8) & 0xff] +
ACE_Handle_Set::nbits_[(n >> 16) & 0xff] + ACE_Handle_Set::nbits_[n >> 24]);
}
// Synchronize the underlying FD_SET with the MAX_FD and the SIZE.
void
ACE_Handle_Set::sync (ACE_HANDLE max)
{
ACE_TRACE ("ACE_Handle_Set::sync");
#if !defined(ACE_WIN32)
this->size_ = 0;
for (int i = (max - 1) / ACE_Handle_Set::WORDSIZE; i >= 0; i--)
this->size_ += count_bits (this->mask_.fds_bits[i]);
this->set_max (max);
#endif /* !ACE_WIN32 */
}
// Resets the MAX_FD after a clear of the original MAX_FD.
void
ACE_Handle_Set::set_max (ACE_HANDLE current_max)
{
ACE_TRACE ("ACE_Handle_Set::set_max");
#if !defined(ACE_WIN32)
if (this->size_ == 0)
this->max_handle_ = -1;
else
{
int i;
for (i = (current_max - 1) / ACE_Handle_Set::WORDSIZE;
this->mask_.fds_bits[i] == 0;
i--)
continue;
this->max_handle_ = i * ACE_Handle_Set::WORDSIZE;
for (fd_mask val = this->mask_.fds_bits[i];
(val & ~1) != 0;
val = (val >> 1) & MSB_MASK)
this->max_handle_++;
}
// Do some sanity checking...
if (this->max_handle_ >= ACE_Handle_Set::MAXSIZE)
this->max_handle_ = ACE_Handle_Set::MAXSIZE - 1;
#endif /* !ACE_WIN32 */
}
ACE_ALLOC_HOOK_DEFINE(ACE_Handle_Set_Iterator)
void
ACE_Handle_Set_Iterator::dump (void) const
{
ACE_TRACE ("ACE_Handle_Set_Iterator::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
ACE_DEBUG ((LM_DEBUG, "num_ = %d", this->num_));
ACE_DEBUG ((LM_DEBUG, "\nindex_ = %d", this->index_));
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}
void
ACE_Handle_Set_Iterator::operator++ (void)
{
ACE_TRACE ("ACE_Handle_Set_Iterator::operator++");
#if defined(ACE_WIN32)
this->index_++;
#else /* !ACE_WIN32 */
this->val_ = (this->val_ >> 1) & MSB_MASK;
this->num_++;
if (this->val_ == 0)
{
for (this->index_++;
this->index_ < ACE_Handle_Set::NUM_WORDS
&& this->handles_.mask_.fds_bits[this->index_] == 0;
this->index_++)
continue;
if (this->index_ >= ACE_Handle_Set::NUM_WORDS)
{
this->num_ = this->handles_.max_handle_ + 1;
return;
}
else
{
this->val_ = this->handles_.mask_.fds_bits[this->index_];
this->num_ = this->index_ * ACE_Handle_Set::WORDSIZE;
}
}
for (; ACE_BIT_DISABLED (this->val_, 1); this->num_++)
this->val_ = (this->val_ >> 1) & MSB_MASK;
#endif /* !ACE_WIN32 */
}
ACE_Handle_Set_Iterator::ACE_Handle_Set_Iterator (const ACE_Handle_Set &f)
: handles_ (f),
num_ (0),
index_ (0)
{
ACE_TRACE ("ACE_Handle_Set_Iterator::ACE_Handle_Set_Iterator");
#if !defined(ACE_WIN32)
for (;
this->handles_.mask_.fds_bits[this->index_] == 0;
this->index_++)
this->num_ += ACE_Handle_Set::WORDSIZE;
for (this->val_ = this->handles_.mask_.fds_bits[this->index_];
(ACE_BIT_DISABLED (this->val_, 1)) && this->num_ < ACE_Handle_Set::MAXSIZE;
this->num_++)
this->val_ = (this->val_ >> 1) & MSB_MASK;
#endif /* !ACE_WIN32 */
}
|
