system.hpp

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/*
 * Copyright (c) 2021, Lawrence Livermore National Security, LLC and LvArray contributors.
 * All rights reserved.
 * See the LICENSE file for details.
 * SPDX-License-Identifier: (BSD-3-Clause)
 */

#pragma once

// System includes
#include <string>
#include <typeinfo>
#include <functional>
#include <dlfcn.h>

namespace LvArray
{

namespace system
{

std::string stackTrace( bool const lineInfo );

std::string demangle( char const * const name );

template< class T >
inline std::string demangleType()
{ return demangle( typeid( T ).name() ); }

template< class T >
inline std::string demangleType( T const & var )
{ return demangle( typeid( var ).name() ); }

void setErrorHandler( std::function< void() > const & handler );

void callErrorHandler();

void stackTraceHandler( int const sig, bool const exit );

void setSignalHandling( void (* handler)( int ) );

void resetSignalHandling();

int getDefaultFloatingPointExceptions();

int enableFloatingPointExceptions( int const exceptions = getDefaultFloatingPointExceptions() );

int disableFloatingPointExceptions( int const exceptions = getDefaultFloatingPointExceptions() );

void setFPE();

class FloatingPointExceptionGuard
{
public:
  FloatingPointExceptionGuard( int const exceptions = getDefaultFloatingPointExceptions() ):
    m_previousExceptions( disableFloatingPointExceptions( exceptions ) )
  {}

  ~FloatingPointExceptionGuard()
  { enableFloatingPointExceptions( m_previousExceptions ); }

private:
  int const m_previousExceptions;
};

std::string calculateSize( size_t const bytes );

} // namespace system
} // namespace LvArray