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G4TWorkspacePool.hh
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the newest version in sPHENIX GitHub for file G4TWorkspacePool.hh
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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// Class Description:
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//
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// Create and hold a pointer to Workspace.
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// This class holds a thread-private static instance
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// of the template parameter workspace.
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//
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// The concrete implementation of workspace objects
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// are responsible for instantiating a singleton instance
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// of this pool.
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//
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// Recycling of this pool can enable reuse among different
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// threads in task-based - or 'on-demand' - simulation.
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// ------------------------------------------------------------
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#ifndef G4TWORKSPACEPOOL_HH
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#define G4TWORKSPACEPOOL_HH
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#include "
tls.hh
"
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#include "
globals.hh
"
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template
<
class
T>
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class
G4TWorkspacePool
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{
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public
:
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inline
T
*
CreateWorkspace
();
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// For use with simple MT mode - each thread gets a workspace
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// and uses it until end
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inline
void
CreateAndUseWorkspace
();
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// Create it (as above) and use it
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inline
T
*
FindOrCreateWorkspace
();
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// For use with 'dynamic' model of threading - workspaces can be recycled
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// Reuse an existing workspace - or create a new one if needed.
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// This will never fail, except if system is out of resources
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inline
T
*
GetWorkspace
() {
return
fMyWorkspace
; }
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// Give back the existing, active workspace for my thread / task
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inline
void
Recycle
(
T
* myWrkSpace );
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// Keep the unused Workspace - for recycling
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inline
void
CleanUpAndDestroyAllWorkspaces
();
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// To be called once at the end of the job
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public
:
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G4TWorkspacePool
() {}
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~G4TWorkspacePool
() {}
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private
:
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static
G4ThreadLocal
T
*
fMyWorkspace
;
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// The thread's workspace - if assigned
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};
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template
<
typename
T>
G4ThreadLocal
T
*
G4TWorkspacePool<T>::fMyWorkspace
=0;
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template
<
class
T>
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T
*
G4TWorkspacePool<T>::CreateWorkspace
()
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{
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T
* wrk = 0;
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if
( !fMyWorkspace )
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{
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wrk =
new
T
;
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if
( !wrk )
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{
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G4Exception
(
"G4TWorspacePool<someType>::CreateWorkspace"
,
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"MemoryError"
,
FatalException
,
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"Failed to create workspace."
);
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}
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else
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{
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fMyWorkspace = wrk;
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}
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}
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else
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{
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G4Exception
(
"ParticlesWorspacePool::CreateWorkspace"
,
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"InvalidCondition"
,
FatalException
,
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"Cannot create workspace twice for the same thread."
);
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wrk = fMyWorkspace;
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}
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return
wrk;
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}
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template
<
class
T>
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void
G4TWorkspacePool<T>::CreateAndUseWorkspace
()
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{
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(this->CreateWorkspace())->UseWorkspace();
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}
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template
<
class
T>
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T
*
G4TWorkspacePool<T>::FindOrCreateWorkspace
()
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{
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T
* wrk= fMyWorkspace;
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if
( !wrk )
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{
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wrk= this->CreateWorkspace();
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}
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wrk->UseWorkspace();
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fMyWorkspace= wrk;
// assign it for use by this thread.
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return
wrk;
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}
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template
<
class
T>
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void
G4TWorkspacePool<T>::Recycle
(
T
* myWrkSpace )
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{
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myWrkSpace->ReleaseWorkspace();
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delete
myWrkSpace;
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}
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template
<
class
T>
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void
G4TWorkspacePool<T>::CleanUpAndDestroyAllWorkspaces
()
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{
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if
(fMyWorkspace)
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{
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fMyWorkspace->DestroyWorkspace();
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delete
fMyWorkspace;
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fMyWorkspace=0;
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}
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}
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#endif // G4TWORKSPACEPOOL_HH
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G4TWorkspacePool.hh
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. updated:
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