This file is indexed.

/usr/include/eiskaltdcpp/dcpp/ThrottleManager.h is in libeiskaltdcpp-dev 2.2.9-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 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
/*
 * Copyright (C) 2009-2012 Jacek Sieka, arnetheduck on gmail point com
 *
 * 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.
 */

#pragma once

#include "Singleton.h"
#include "Socket.h"
#include "TimerManager.h"
#include "SettingsManager.h"

namespace dcpp
{
/**
 * Manager for throttling traffic flow.
 * Inspired by Token Bucket algorithm: http://en.wikipedia.org/wiki/Token_bucket
 */
class ThrottleManager :
    public Singleton<ThrottleManager>, private TimerManagerListener
{
public:

    /*
     * Throttles traffic and reads a packet from the network
     */
    int read(Socket* sock, void* buffer, size_t len);

    /*
     * Throttles traffic and writes a packet to the network
     * Handle this a little bit differently than downloads due to OpenSSL stupidity
     */
    int write(Socket* sock, void* buffer, size_t& len);

    static SettingsManager::IntSetting getCurSetting(SettingsManager::IntSetting setting);

    static int getUpLimit();
    static int getDownLimit();

    static void setSetting(SettingsManager::IntSetting setting, int value);

    void shutdown();
private:
    // stack up throttled read & write threads
    CriticalSection stateCS;
    CriticalSection waitCS[2];
    long activeWaiter;

#ifndef _WIN32 //*nix

    // shutdown wait
    CriticalSection shutdownCS;
    long n_lock, halt;
#endif
    // download limiter
    CriticalSection downCS;
    int64_t         downTokens;

    // upload limiter
    CriticalSection upCS;
    int64_t         upTokens;

    friend class Singleton<ThrottleManager>;

    ThrottleManager(void) : activeWaiter(-1), downTokens(0), upTokens(0)
    {
#ifndef _WIN32 //*nix
        n_lock = halt = 0;
#endif
        TimerManager::getInstance()->addListener(this);
    }

    ~ThrottleManager(void);

    bool getCurThrottling();
    void waitToken();

    // TimerManagerListener
    void on(TimerManagerListener::Second, uint64_t /* aTick */) noexcept;
};

}   // namespace dcpp