All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class magician.Node.SPExecEnv 

java.lang.Object
   |
   +----magician.Node.Resource
           |
           +----magician.Node.SPExecEnv
public class SPExecEnv
extends Resource
implements Runnable, PerfConstants
This class monitors the execution of a Smartpacket thread. t attempts to keep account of memory used, cpu usage, and other statistics

See Also:
SPThread

Variable Index

o AppPredictorTable
o AppsRecorded
o clockspeed
o cpuinfo
o CPUTime
The length of execution time (in millisecond) Should be less than MAX_CPU_TIME
o evm
o IOBandwidth
The I/O bandwidth that this SP can utilize (in bps)
o memUsage
Estimated memory usage (in bytes) Calculated as the number of objects allocated multiplied by the size of each object
o numObjects
The number of objects allocated so far by this SPThread
o rm
o thread
the Smartpacket thread being monitored
o threadStarted
test for thread control
o thStartTime
o totalMemory
The maximum size of memory which can be allocated by the SmartPacket running this thread (in bytes)

Constructor Index

o SPExecEnv(KUSmartPacketV2, ThreadGroup, ResourceMgr)
initializes the execution environment prameters and create a new SPThread

Method Index

o ()
o getNumObjects()
returns the number of objects allocated by the Smartpacket thread
o notifyExecEnv()
called by SmartPacket thread to notify exec env
o recordStartTime(EventManager, String)
o run()
starts SmartPacket thread and monitors cpu usage.
o setFinalExecTime(long)

Variables

o thread 
 protected SPThread thread
the Smartpacket thread being monitored

o numObjects 
 protected int numObjects
The number of objects allocated so far by this SPThread

o memUsage 
 protected long memUsage
Estimated memory usage (in bytes) Calculated as the number of objects allocated multiplied by the size of each object

o CPUTime 
 protected long CPUTime
The length of execution time (in millisecond) Should be less than MAX_CPU_TIME

o totalMemory 
 protected int totalMemory
The maximum size of memory which can be allocated by the SmartPacket running this thread (in bytes)

o IOBandwidth 
 protected int IOBandwidth
The I/O bandwidth that this SP can utilize (in bps)

o threadStarted 
 protected boolean threadStarted
test for thread control

o rm 
 protected ResourceMgr rm
o thStartTime 
 protected long thStartTime
o evm 
 protected EventManager evm
o AppPredictorTable 
 protected static Hashtable AppPredictorTable
o AppsRecorded 
 protected static Hashtable AppsRecorded
o clockspeed 
 protected static long clockspeed
o cpuinfo 
 protected static String cpuinfo

Constructors

o SPExecEnv 
 protected SPExecEnv(KUSmartPacketV2 sp,
                     ThreadGroup tg,
                     ResourceMgr rm) throws ResourceException
initializes the execution environment prameters and create a new SPThread

Parameters:
sp - the SmartPacket object
tg - the thread group to which the SPThread belongs
rm - the Resource Manager for the node
Throws: ResourceException
if Smartpacket's resource needs exceed global bounds

Methods

o 
 static void ()
o getNumObjects 
 public int getNumObjects()
returns the number of objects allocated by the Smartpacket thread

Returns:
the number of objects
o run 
 public void run()
starts SmartPacket thread and monitors cpu usage. Cleans up after smartpacket thread exits

o notifyExecEnv 
 public void notifyExecEnv()
called by SmartPacket thread to notify exec env

o setFinalExecTime 
 public void setFinalExecTime(long execTime)
o recordStartTime 
 protected static void recordStartTime(EventManager evm,
                                       String app)

All Packages  Class Hierarchy  This Package  Previous  Next  Index
1