Class MVCMutex

Object
   |
   +--GrvObject
         |
         +--MVCMutex

class MVCMutex

extends GrvObject

This class encapsulates a Map of mutual exclusion data; It self-registers instantiations into a static Map; This class implements Lamport's bakery algorithm for mutual exclusion; It is used to execute Command objects while making sure that no other Command objects (that are using Mutex) are executed at the same time.

NOTE: our main use for this is to keep background AJAX processing from confusing foreground UI processing, which can otherwise occur because both are making data model changes simultaneously.
Version: 2.0

Author: Bruce Wallace (PolyGlotInc.com)
See:

- konstructor()

Field Detail

Map

<static> Object Map

MVCMutex

MVCMutex()

Version: 2.0

Author: Bruce Wallace (PolyGlotInc.com)
See:
- konstructor()

cpuSlice

void cpuSlice( <int> optStartID )

continue the processing of "this" mutex/command object

Parameters:
optStartID - optional ID of last command we were waiting on; if not specified then start at top of list of all pending mutex/commands.

See:
- CpuSlice()

invoke

void invoke()

launch the processing of "this" mutex/command object

konstructor

void konstructor( <Command> cmdObj, <String> methodName, <boolean> optInhibitInvoke )

Parameters:
cmdObj - Command object to be wrapped in Mutex
methodName - name of method being run on cmdObj
optInhibitInvoke - optional flag that if true will inhibit immediate launching of cmdObj by this constructor

CpuSlice

<static> void CpuSlice( <int> cmdID, <int> optStartID )

Static method to give a slice of CPU to mutex with given ID

Parameters:
cmdID - ID of command to resume
optStartID - optional ID of command on which we are waiting; if not specified then start at top of list of all pending commands.