/usr/include/corelinux/Semaphore.hpp is in libcorelinux-dev 0.4.32-7.4ubuntu1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | #if !defined(__SEMAPHORE_HPP)
#define __SEMAPHORE_HPP
/*
CoreLinux++
Copyright (C) 1999,2000 CoreLinux Consortium
The CoreLinux++ 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.
The CoreLinux++ Library Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#if !defined(__COMMON_HPP)
#include <Common.hpp>
#endif
#if !defined(__ABSTRACTSEMAPHORE_HPP)
#include <AbstractSemaphore.hpp>
#endif
#if !defined(__SEMAPHOREEXCEPTION_HPP)
#include <SemaphoreException.hpp>
#endif
namespace corelinux
{
DECLARE_CLASS( Semaphore );
/**
A Semaphore supports the protocol that processes and/or threads agree to
follow for the purpose of controlled access to a resource. The
resource can be anything that the developer considers to need access
controls on such as memory, hardware, methods, computer instructions,
and so on.
Callers can elect to avoid being put into a blocked state and
return immediately without control to the resource. Callers may also
request that they are put into a blocked state for a specified amount
of time. If, at the end of the specified time, the request has not
been satisfied, it is returned with a Timeout indicator.
The owner or creator of the semaphore can elect to enforce balking
behavior on a Semaphore. When so designated, the Semaphore can turn
back any request until some condition in their solution space is met
regardless of the callers blocking options. If a caller access
attempt is balked, is it returned with a Balked indicator.
*/
class Semaphore : public AbstractSemaphore
{
public:
//
// Constructors and destructors
//
/**
Default constructor requires the identifier
of the semaphore in the semaphore group
@param SemaphoreGroupPtr The
owning SemaphoreGroup
@param SemaphoreIdentifier The identifier
from the Semaphore Group
@param bool true if recursion enabled
@param bool true if balking enabled
*/
Semaphore
(
SemaphoreGroupPtr,
SemaphoreIdentifierRef,
bool Recursive=false,
bool Balking=false
) throw ( NullPointerException );
/// Virtual Destructor
virtual ~Semaphore( void );
//
// Operator overloads
//
/// Equality operator returns true if identifiers match
bool operator==( SemaphoreCref aRef ) const;
//
// Accessors
//
/// Returns true if balking enabled
virtual bool isBalkingEnabled( void ) const;
/// Returns true if recursion allowed
virtual bool isRecursionEnabled( void ) const;
/// Returns the identifier of who currently owns the semaphore
virtual ThreadIdentifierCref getOwningThreadIdentifier( void ) const;
/// Return the depth of the recursion for the owner
virtual CounterCref getRecursionQueueLength( void ) const;
protected:
//
// Constructors
//
/// Default constructor throws assertion
Semaphore( void )
throw(Assertion);
/// Copy constructor throws assertion
Semaphore( SemaphoreCref )
throw(Assertion);
//
// Operator overloads
//
/// Assignment operator throws assertion
SemaphoreRef operator=( SemaphoreCref )
throw(Assertion);
/// Operator for increasing theRecursionQueueLength
CounterCref operator++( void );
/// Operator for decreasing theRecursionQueueLength
CounterCref operator--( void );
//
// Accessors
//
/// Returns a reference to the owning thread
virtual ThreadIdentifierRef getOwnerId( void );
//
// Mutators
//
/// Sets the owner id to the current thread
virtual void setOwnerId( void );
/// Sets the recursion length
virtual void setRecursionQueueLength( Counter );
/// Sets the owner thread id to not owned
virtual void resetOwnerId( void );
private:
/// ThreadIdentifier for recursive check
ThreadIdentifier theOwningThread;
/// The recursion queue length
Counter theRecursionQueueLength;
/// Recursive mode flag
bool theRecursiveMode;
/// Balking mode flag
bool theBalkingMode;
};
}
#endif // if !defined(__SEMAPHORE_HPP)
/*
Common rcs information do not modify
$Author: frankc $
$Revision: 1.2 $
$Date: 2000/06/02 11:51:52 $
$Locker: $
*/
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