/usr/include/assa-3.5/assa/FdSet.h is in libassa-3.5-5-dev 3.5.1-6+b1.
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 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 | // -*- c++ -*-
//------------------------------------------------------------------------------
// FdSet.h
//------------------------------------------------------------------------------
// Copyright (C) 1997-2002 Vladislav Grinchenko
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//------------------------------------------------------------------------------
#ifndef FDSET_H
#define FDSET_H
/** @file FdSet.h */
#include <string.h>
#include <sys/time.h> /* select(3) */
#if defined(Linux) /* select(3) */
# include <sys/types.h>
# include <unistd.h>
#endif
#include <algorithm>
#include <string>
#include <sstream>
#include <iostream>
#include <list>
#include "assa/Logger.h"
namespace ASSA {
/** Class FdSet.
Wrapper around struct fd_set. This class hides the differences
between UNIX/POSIX and WIN32 implementations of fd_set data structure.
The main difference is that while fd_set on POSIX system is represented
as bit flags, the same structure on WIN32 system is opaque and not limited
by FD_SETSIZE.
In fact, it is represented as an array of SOCKETs (read u_int[FD_SETSIZE])
along with the number of FDs in the set. This allows a WIN32 socket
descriptor value to fall anywhere in the range from 0 to max(u_int -1).
handler_t type hides the type difference.
*/
class FdSet : public fd_set
{
public:
/** Constructor.
*/
FdSet ();
/** Set flag (ON) for the argument fd.
@param fd_ Bit to set.
@return false if argument is out of bounds, true otherwise.
*/
bool setFd (handler_t fd_);
/** Clear flag (OFF) for the argument fd.
@param fd_ Bit to clear
@return false if argument is out of bounds; true otherwise.
*/
bool clear (handler_t fd_);
/** Test whether fd's flag is on.
@param fd_ Bit to test
@return true if fd_ bit is set; false otherwise
*/
bool isSet (handler_t fd_);
/** Sync internals after used by select(3C)
*/
void sync ();
/** Reset every bit in the set (OFF).
*/
void reset ();
/** Find out the highest file descriptor in the set
@return highest value of file descriptor.
*/
int maxInSet ();
/** Determine how many bits are set (ON) in the set.
@return Number of bits set
*/
int numSet ();
/** Determine highest handler in the set.
@return highest value in the set
*/
/** Write to debug log all bits set.
*/
void dump ();
/** Return object state dump as an ASCII string.
*/
std::string dump_c_str ();
private:
#if !defined (WIN32)
typedef std::list<u_int>::iterator ActiveFDs_Iter;
std::list<u_int> m_actfds; /// A shortcut - list of active FDs
#endif
};
//------------------------------------------------------------------------------
// Member Functions
//------------------------------------------------------------------------------
inline FdSet::FdSet () { reset (); }
inline void FdSet::dump () { DL ((REACT, "%s\n", dump_c_str ().c_str ())); }
inline bool FdSet::isSet (handler_t fd_) { return FD_ISSET (fd_, this); }
inline int
FdSet::
numSet ()
{
#if defined (WIN32)
return this->fd_count;
#else /* UNIX */
return m_actfds.size ();
#endif
}
} // end namespace ASSA
#endif /* FDSET_H */
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