Arcane::MachineShMemWinVariableBase Class Reference

Class allowing access to the shared memory part between sub-domains of the same node of a variable. More...

#include <arcane/core/internal/MachineShMemWinVariableBase.h>

Inheritance diagram for Arcane::MachineShMemWinVariableBase:

Collaboration diagram for Arcane::MachineShMemWinVariableBase:

Public Member Functions
	MachineShMemWinVariableBase (IVariable *var)
	Constructor.
ConstArrayView< Int32 >	machineRanks () const
	Method allowing retrieval of the ranks that possess a segment in the window.
void	barrier () const
	Method allowing waiting until all processes/threads of the node call this method to continue execution.
Span< std::byte >	segmentView (Int32 rank) const
	Method allowing retrieval of a view on the segment of another sub-domain of the node.
void	updateVariable (Int64 nb_elem_dim1, Int64 sizeof_elem)

Protected Attributes
IVariable *	m_var = nullptr
IParallelMng *	m_pm = nullptr
ConstArrayView< Int32 >	m_machine_ranks
impl::HashTableMap2< Int32, Int64 >	m_sizeof_var

Detailed Description

Class allowing access to the shared memory part between sub-domains of the same node of a variable.

It is necessary that this variable be allocated in shared memory with the property "IVariable::PInShMem".

Definition at line 40 of file MachineShMemWinVariableBase.h.

Constructor & Destructor Documentation

MachineShMemWinVariableBase()

Arcane::MachineShMemWinVariableBase::MachineShMemWinVariableBase ( IVariable * var )

explicit

Constructor.

Parameters

var	Variable having the property "IVariable::PInShMem".

Definition at line 45 of file MachineShMemWinVariableBase.cc.

References Arcane::IVariable::PInShMem.

Referenced by Arcane::MachineShMemWinVariable2DBase::MachineShMemWinVariable2DBase(), and Arcane::MachineShMemWinVariableMDBase::MachineShMemWinVariableMDBase().

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Member Function Documentation

barrier()

void Arcane::MachineShMemWinVariableBase::barrier

(

)

const

Method allowing waiting until all processes/threads of the node call this method to continue execution.

Definition at line 74 of file MachineShMemWinVariableBase.cc.

machineRanks()

ConstArrayView< Int32 > Arcane::MachineShMemWinVariableBase::machineRanks

(

)

const

Method allowing retrieval of the ranks that possess a segment in the window.

Non-collective call.

Returns

A view containing the rank IDs.

Definition at line 65 of file MachineShMemWinVariableBase.cc.

segmentView()

Span< std::byte > Arcane::MachineShMemWinVariableBase::segmentView

(

Int32

rank

)

const

Method allowing retrieval of a view on the segment of another sub-domain of the node.

Non-collective call.

Parameters

rank	The rank of the sub-domain.

Returns

A view.

Definition at line 83 of file MachineShMemWinVariableBase.cc.

References ARCANE_FATAL, and Arcane::AllocatedMemoryInfo::baseAddress().

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updateVariable()

void Arcane::MachineShMemWinVariableBase::updateVariable	(	Int64	nb_elem_dim1,
		Int64	sizeof_elem )

Parameters

nb_elem_dim1	In number of elements
sizeof_elem	In bytes

Definition at line 98 of file MachineShMemWinVariableBase.cc.

References Arcane::ContigMachineShMemWin< Type >::barrier(), Arcane::ContigMachineShMemWin< Type >::segmentView(), and Arcane::ContigMachineShMemWin< Type >::windowConstView().

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Member Data Documentation

m_machine_ranks

ConstArrayView<Int32> Arcane::MachineShMemWinVariableBase::m_machine_ranks

protected

Definition at line 92 of file MachineShMemWinVariableBase.h.

m_pm

IParallelMng* Arcane::MachineShMemWinVariableBase::m_pm = nullptr

protected

Definition at line 90 of file MachineShMemWinVariableBase.h.

m_sizeof_var

impl::HashTableMap2<Int32, Int64> Arcane::MachineShMemWinVariableBase::m_sizeof_var

protected

Definition at line 95 of file MachineShMemWinVariableBase.h.

m_var

IVariable* Arcane::MachineShMemWinVariableBase::m_var = nullptr

protected

Definition at line 89 of file MachineShMemWinVariableBase.h.

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

• MachineShMemWinVariableBase.h
• MachineShMemWinVariableBase.cc