/usr/include/rutil/RWMutex.hxx is in libresiprocate-1.11-dev 1:1.11.0~beta5-1.
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 | #if !defined(RESIP_RWMUTEX_HXX)
#define RESIP_RWMUTEX_HXX
static const char* const resipRWMutex_hxx_Version =
"$Id: RWMutex.hxx,v 1.3 2003/06/02 20:52:32 ryker Exp $";
#include "Lockable.hxx"
#include "Mutex.hxx"
#include "Condition.hxx"
namespace resip
{
/**
@brief Wraps the readers/writers mutex implementation on your platform.
@note A readers/writers mutex is a mutex that can be locked in two differing
ways:
- A read-lock: Prevents other threads from obtaining a write-lock, but
not other read-locks.
- A write-lock: Prevents other threads from obtaining either a
read-lock or write-lock.
Usually, if a thread attempts to aquire a write-lock while read-locks are
being held, this will prevent any further read-locks from being obtained,
until the write-lock is aquired and released. This prevents the "writer
starvation" problem.
*/
class RWMutex : public Lockable
{
public:
RWMutex();
~RWMutex();
void readlock();
void writelock();
void lock();
void unlock();
unsigned int readerCount() const;
unsigned int pendingWriterCount() const;
private:
Mutex mMutex;
Condition mReadCondition;
Condition mPendingWriteCondition;
unsigned int mReaderCount;
bool mWriterHasLock;
unsigned int mPendingWriterCount;
};
}
#endif
/* ====================================================================
* The Vovida Software License, Version 1.0
*
* Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
*
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*
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