1. Zhangxy Zhangxm Huangxt Dec 17 ,2003
BESIII Framework
v2.0
Zhangxy Zhangxm Huangxt
Dec 17 ,2003

2. Outline Introduction Functionality Architecture Part Implementation
Brief Summary

3. Introduction BESF(BESIII Software Framework) is a software
Framework for the data analysis of BESIII.
It’s design and implementation are based mainly
on BASF architecture developed by Belle.
Some advanced features from Gaudi,Babar frame-
works were also implemented in BESF.
BESF is only a temporary name of the framework,
A better name should be chosen.

4. Functionality Two data management system available: Panther System
Proxy System(next report)
Event Input Service :
Raw data
Panther table data
BesII NDST data.
Event Output Service:
Panther table data.

5. Functionality Histogram Service: 1D, 2D, Ntuple (Hbook)
1D, 2D ,3D ,Ntuple (Root)
Dynamic libraries loading.
Run-time parameter controlling.
Other ..
Message tool.
Error Log tool.
history commands memory.

6. Architecture Defining the basic components.
Defining how they are interfaced.
Paw

7. Part Implementation Module & Path Service Double buffer for Event I/O
Factory
Dynamic Loading Libraries
Messages
Job Execution

8. Module & Path main path1 path2 …… module1 module 2 module 3
Module is the basic processing unit to perform a specific task.
Path is the collection of the related modules to finish a series of tasks.
main
path1
path2 ……
path condition
module1
module 2
module 3

9. Service is very like the module , but it’s convenient to use.

10. Double buffer for Event I/O
Double buffer mechanism to minimize the reading time from data storage
device.

11. Factory Factory is used to create the modules and services BesFactory
Type()=0 : string
Ident()=0 : string
BesServiceBaseFactory
Instiansiate() = 0 :BesService*
BesModuleBaseFactory
Instiansiate() = 0 :BesModule *
BesModuleFactory
Type() : string
Ident() : string
Instiansiate() :BesModule*
BesServiceFactory
Type() : string
Ident() : string
Instiansiate() :BesService*

12. Dynamic Loading Libraries
dlopen() to open the share libraries.
dlsym() to get the function pointer.
BesModuleFactoryManger
map(string,BesFactory*) fmapfactory
declareFactory()
createModule(string, string, BesModule* )
BesFramework
BesDLLClassManager
BesServiceFactoryManger
map(string,BesFactory*) fmapfactory
declareFactory()
createModule(string, string, BesService*)

13. Messages Interface between user and BESF parse user’s commands.
take certain action
provide help.

14. Job Execution BesFramewok Use_if Run() Messageprocess() MessageList()
Configure()
1.Open *.so
2.put module factory into
BesMoudleFatoryManager class.
3.put service factory into
BesServiceFactoryManager class.
Initialize()
1.Initialize paths
2.Initialize modules
3.Initialize service.

15. Brief Summary Collection of Manpower.
Collection of Belle, Gaudi, BaBar.
Belle:
User Interface
Path — Module Organization
Panther
Gaudi:
Service Mechanism.
Parameter Mechanism.
Factory Mechanism.
Dynamic Libraries Mechanism.
BaBar:
Proxy Mechanism.
Error Logging.

16. Thanks All