HDK: UT/UT_ChildProcessTracker.h Source File

00001 /*
00002  * PROPRIETARY INFORMATION.  This software is proprietary to
00003  * Side Effects Software Inc., and is not to be reproduced,
00004  * transmitted, or disclosed in any way without written permission.
00005  *
00006  * Produced by:
00007  *      Mark Alexander
00008  *      Side Effects Software Inc
00009  *      477 Richmond Street West
00010  *      Toronto, Ontario
00011  *      Canada   M5V 3E7
00012  *      416-504-9876
00013  *
00014  * NAME:        UT_ChildProcessTracker.h ( UT Library, C++)
00015  *
00016  * COMMENTS:
00017  *     For child processes that have an indeterminant exit time (like a
00018  *     spawned viewer), this class will periodically do a non-blocking wait on
00019  *     them.
00020  *      
00021  */
00022 #ifndef UT_CHILD_PROCESS_TRACKER_H
00023 #define UT_CHILD_PROCESS_TRACKER_H
00024 
00025 #include "UT_API.h"
00026 #include <SYS/SYS_Types.h>
00027 #include "UT_Defines.h"
00028 
00029 class UT_API UT_ChildProcessTracker
00030 {
00031 public:
00032              UT_ChildProcessTracker();
00033     virtual ~UT_ChildProcessTracker();
00034 
00035     virtual void addNewChild(pid_t pid);
00036     virtual bool pollChildren();
00037 
00038 protected:
00039     int          myNumPIDs;
00040     pid_t       *myPIDs;
00041 };
00042 
00043 UT_API extern void UTsetChildProcessTracker(UT_ChildProcessTracker *);
00044 UT_API extern UT_ChildProcessTracker *UTgetChildProcessTracker();
00045 
00046 #endif