lsst::ap::Mutex Class Reference

A wrapper for a process private POSIX mutual exclusion lock. More...

#include <Mutex.h>

Inheritance diagram for lsst::ap::Mutex:

Public Member Functions
	Mutex ()
	~Mutex ()

Private Member Functions
void	acquire ()
bool	tryAcquire ()
void	release ()

Private Attributes
::pthread_mutex_t	_mutex

Friends
class	ScopedLock< Mutex >
class	Condition< Mutex >

Detailed Description

A wrapper for a process private POSIX mutual exclusion lock.

Definition at line 56 of file Mutex.h.

Constructor & Destructor Documentation

lsst::ap::Mutex::Mutex ( )

inline

Definition at line 60 of file Mutex.h.

            {
        int err = ::pthread_mutex_init(&_mutex, 0);
        if (err != 0) {
            throw LSST_EXCEPT(lsst::pex::exceptions::RuntimeError,
                (boost::format("pthread_mutex_init() failed, return code: %1%") % err).str());
        }
    }

lsst::ap::Mutex::~Mutex ( )

inline

Definition at line 68 of file Mutex.h.

             {
        int result = ::pthread_mutex_destroy(&_mutex);
        assert(result == 0);
    }

Member Function Documentation

void lsst::ap::Mutex::acquire ( )

inlineprivate

Definition at line 77 of file Mutex.h.

                   {
        int result = ::pthread_mutex_lock(&_mutex);
        assert(result == 0);
    }

void lsst::ap::Mutex::release ( )

inlineprivate

Definition at line 86 of file Mutex.h.

                   {
        int result = ::pthread_mutex_unlock(&_mutex);
        assert(result == 0);
    }

bool lsst::ap::Mutex::tryAcquire ( )

inlineprivate

Definition at line 82 of file Mutex.h.

                      {
        return ::pthread_mutex_trylock(&_mutex) == 0;
    }

Friends And Related Function Documentation

friend class Condition< Mutex >

friend

Definition at line 92 of file Mutex.h.

friend class ScopedLock< Mutex >

friend

Definition at line 91 of file Mutex.h.

Member Data Documentation

::pthread_mutex_t lsst::ap::Mutex::_mutex

private

Definition at line 75 of file Mutex.h.

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The documentation for this class was generated from the following file:

• /lsst/home/lsstsw/stack/Linux64/ap/master-g60f1e072bb+1/include/lsst/ap/Mutex.h