source: trunk/MagicSoft/Mars/mbase/MTask.cc@ 972

Last change on this file since 972 was 961, checked in by tbretz, 23 years ago
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1/* ======================================================================== *\
2!
3! *
4! * This file is part of MARS, the MAGIC Analysis and Reconstruction
5! * Software. It is distributed to you in the hope that it can be a useful
6! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
7! * It is distributed WITHOUT ANY WARRANTY.
8! *
9! * Permission to use, copy, modify and distribute this software and its
10! * documentation for any purpose is hereby granted without fee,
11! * provided that the above copyright notice appear in all copies and
12! * that both that copyright notice and this permission notice appear
13! * in supporting documentation. It is provided "as is" without express
14! * or implied warranty.
15! *
16!
17!
18! Author(s): Thomas Bretz 12/2000 (tbretz@uni-sw.gwdg.de)
19!
20! Copyright: MAGIC Software Development, 2000-2001
21!
22!
23\* ======================================================================== */
24
25/////////////////////////////////////////////////////////////////////////////
26// //
27// MTask //
28// //
29// Base class for all tasks which can perfomed in a tasklist //
30// For each event processed in the eventloop all the different //
31// tasks in the tasklist will be processed. //
32// //
33// So all tasks must inherit from this baseclass. //
34// //
35// The inheritance from MInputStreamID is used to indicate the //
36// type of event that this task is for. If it is "All" it is executed //
37// independantly of the actual ID of the task list. //
38// //
39// Inside this abstract class, there are three fundamental function: //
40// //
41// - PreProcess(): executed before the eventloop starts. Here you //
42// can initiate different things, open files, etc. //
43// As an argument this function gets a pointer to the //
44// parameter list. You can stop the execution by //
45// returning kFALSE instead of kTRUE. If an error //
46// occured and you return kFALSE make sure, that //
47// any action is closed correctly and all newly //
48// created object are deleted. The PostProcess in //
49// such a case won't be executed by the Tasklist or //
50// Eventloop. //
51// //
52// - Process(): executed for each event in the eventloop. Do it //
53// one task after the other (as they occur in the //
54// tasklist). Only the tasks with a Stream ID //
55// which matches the actual ID of the tasklist //
56// are executed. A task can return kFALSE to //
57// stop the execuition of the tasklist or //
58// kCONTINUE to skip the pending tasks. //
59// //
60// - PostProcess(): executed after the eventloop. Here you can close //
61// output files, start display of the run parameter, //
62// etc. PostProcess should be executed only if //
63// PreProcess was successfull (returned kTRUE) //
64// //
65/////////////////////////////////////////////////////////////////////////////
66
67#include "MTask.h"
68
69ClassImp(MTask);
70
71// --------------------------------------------------------------------------
72//
73// This is processed before the eventloop starts
74//
75// It is the job of the PreProcess to connect the tasks
76// with the right container in the parameter list.
77//
78// the virtual implementation returns kTRUE
79//
80Bool_t MTask::PreProcess(MParList *pList)
81{
82 return kTRUE;
83}
84
85// --------------------------------------------------------------------------
86//
87// This is processed for every event in the eventloop
88//
89// the virtual implementation returns kTRUE
90//
91Bool_t MTask::Process()
92{
93 return kTRUE;
94}
95
96// --------------------------------------------------------------------------
97//
98// This is processed after the eventloop starts
99//
100// the virtual implementation returns kTRUE
101//
102Bool_t MTask::PostProcess()
103{
104 return kTRUE;
105}
106
107
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