/usr/include/Poco/Mutex_POSIX.h is in libpoco-dev 1.8.0.1-1ubuntu4.
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 | //
// Mutex_POSIX.h
//
// Library: Foundation
// Package: Threading
// Module: Mutex
//
// Definition of the MutexImpl and FastMutexImpl classes for POSIX Threads.
//
// Copyright (c) 2004-2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_Mutex_POSIX_INCLUDED
#define Foundation_Mutex_POSIX_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Exception.h"
#include <pthread.h>
#include <errno.h>
namespace Poco {
class Foundation_API MutexImpl
{
protected:
MutexImpl();
MutexImpl(bool fast);
~MutexImpl();
void lockImpl();
bool tryLockImpl();
bool tryLockImpl(long milliseconds);
void unlockImpl();
private:
pthread_mutex_t _mutex;
};
class Foundation_API FastMutexImpl: public MutexImpl
{
protected:
FastMutexImpl();
~FastMutexImpl();
};
//
// inlines
//
inline void MutexImpl::lockImpl()
{
if (pthread_mutex_lock(&_mutex))
throw SystemException("cannot lock mutex");
}
inline bool MutexImpl::tryLockImpl()
{
int rc = pthread_mutex_trylock(&_mutex);
if (rc == 0)
return true;
else if (rc == EBUSY)
return false;
else
throw SystemException("cannot lock mutex");
}
inline void MutexImpl::unlockImpl()
{
if (pthread_mutex_unlock(&_mutex))
throw SystemException("cannot unlock mutex");
}
} // namespace Poco
#endif // Foundation_Mutex_POSIX_INCLUDED
|