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
|
/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef _D_REQUEST_SLOT_H_
#define _D_REQUEST_SLOT_H_
#include "common.h"
#include "TimerA2.h"
#include "Piece.h"
#include "wallclock.h"
namespace aria2 {
class RequestSlot {
private:
Timer dispatchedTime_;
size_t index_;
uint32_t begin_;
size_t length_;
size_t blockIndex_;
// This is the piece whose index is index of this RequestSlot has.
// To detect duplicate RequestSlot, we have to find the piece using
// PieceStorage::getPiece() repeatedly. It turns out that this process
// takes time(about 1.7% of processing time). To reduce it, we put piece here
// at the construction of RequestSlot as a cache.
SharedHandle<Piece> piece_;
// inlined for performance reason
void copy(const RequestSlot& requestSlot)
{
dispatchedTime_ = requestSlot.dispatchedTime_;
index_ = requestSlot.index_;
begin_ = requestSlot.begin_;
length_ = requestSlot.length_;
blockIndex_ = requestSlot.blockIndex_;
piece_ = requestSlot.piece_;
}
public:
RequestSlot(size_t index, uint32_t begin, size_t length, size_t blockIndex,
const SharedHandle<Piece>& piece = SharedHandle<Piece>()):
dispatchedTime_(global::wallclock),
index_(index), begin_(begin), length_(length), blockIndex_(blockIndex),
piece_(piece) {}
RequestSlot(const RequestSlot& requestSlot):
dispatchedTime_(requestSlot.dispatchedTime_),
index_(requestSlot.index_),
begin_(requestSlot.begin_),
length_(requestSlot.length_),
blockIndex_(requestSlot.blockIndex_),
piece_(requestSlot.piece_) {}
RequestSlot():dispatchedTime_(0), index_(0), begin_(0), length_(0),
blockIndex_(0)
{}
~RequestSlot() {}
RequestSlot& operator=(const RequestSlot& requestSlot)
{
if(this != &requestSlot) {
copy(requestSlot);
}
return *this;
}
bool operator==(const RequestSlot& requestSlot) const
{
return index_ == requestSlot.index_ && begin_ == requestSlot.begin_
&& length_ == requestSlot.length_;
}
bool operator!=(const RequestSlot& requestSlot) const
{
return !(*this == requestSlot);
}
bool operator<(const RequestSlot& requestSlot) const
{
if(index_ == requestSlot.index_) {
return begin_ < requestSlot.begin_;
} else {
return index_ < requestSlot.index_;
}
}
void setDispatchedTime(time_t secFromEpoch);
bool isTimeout(time_t timeoutSec) const;
size_t getIndex() const { return index_; }
void setIndex(size_t index) { index_ = index; }
uint32_t getBegin() const { return begin_; }
void setBegin(uint32_t begin) { begin_ = begin; }
size_t getLength() const { return length_; }
void setLength(size_t length) { length_ = length; }
size_t getBlockIndex() const { return blockIndex_; }
void setBlockIndex(size_t blockIndex) { blockIndex_ = blockIndex; }
const SharedHandle<Piece>& getPiece() const
{
return piece_;
}
static RequestSlot nullSlot;
static bool isNull(const RequestSlot& requestSlot);
};
} // namespace aria2
#endif // _D_REQUEST_SLOT_H_
|
