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Kokkos_MemoryTracking.hpp
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Kokkos_MemoryTracking.hpp
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/*
//@HEADER
// ************************************************************************
//
// Kokkos: Manycore Performance-Portable Multidimensional Arrays
// Copyright (2012) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
//
// ************************************************************************
//@HEADER
*/
#ifndef KOKKOS_MEMORY_TRACKING_HPP
#define KOKKOS_MEMORY_TRACKING_HPP
#include <cstddef>
#include <utility>
#include <vector>
#include <string>
#include <typeinfo>
#include <iosfwd>
namespace Kokkos {
namespace Impl {
class MemoryTracking ;
class MemoryTrackingEntry {
public:
const std::string label ;
const std::type_info & type ;
const ptrdiff_t begin ;
const ptrdiff_t end ;
private:
unsigned m_count ;
protected:
MemoryTrackingEntry( const std::string & arg_label ,
const std::type_info & arg_type ,
const void * const arg_begin ,
const unsigned arg_bytes )
: label( arg_label )
, type( arg_type )
, begin( reinterpret_cast<ptrdiff_t>( arg_begin ) )
, end( reinterpret_cast<ptrdiff_t>(
reinterpret_cast<const unsigned char *>( arg_begin ) + arg_bytes ) )
, m_count( 0 )
{}
public:
unsigned count() const { return m_count ; }
virtual void print( std::ostream & ) const ;
virtual ~MemoryTrackingEntry();
private:
MemoryTrackingEntry();
MemoryTrackingEntry( const MemoryTrackingEntry & rhs );
MemoryTrackingEntry & operator = ( const MemoryTrackingEntry & rhs );
friend class MemoryTracking ;
};
class MemoryTracking {
public:
/** \brief Track a memory range defined by the entry.
* This entry must be allocated via 'new'.
*/
void insert( MemoryTrackingEntry * entry );
/** \brief Decrement the tracked memory range.
* If the count is zero then the entry is deleted
* via the 'delete' operator.
*/
void decrement( const void * ptr );
/** \brief Increment the tracking count. */
void increment( const void * ptr );
/** \brief Query a tracked memory range. */
MemoryTrackingEntry * query( const void * ptr ) const ;
/** \brief Call the 'print' method on all entries. */
void print( std::ostream & , const std::string & lead ) const ;
size_t size() const { return m_tracking.size(); }
template< typename iType >
MemoryTracking & operator[]( const iType & i ) const
{ return *m_tracking[i]; }
/** \brief Construct with a name for error messages */
explicit MemoryTracking( const std::string & space );
/** \brief Print memory leak warning for all entries. */
~MemoryTracking();
/** \brief Query if constructed */
bool exists() const { return ! m_tracking_end.empty(); }
private:
MemoryTracking();
MemoryTracking( const MemoryTracking & );
MemoryTracking & operator = ( const MemoryTracking & );
std::string m_space ;
std::vector<MemoryTrackingEntry*> m_tracking ;
std::vector<ptrdiff_t> m_tracking_end ;
};
} /* namespace Impl */
} /* namespace Kokkos */
#endif

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