|
|
|
6.115 ProcessorScheduler
- Defined in namespace Smalltalk
- Category: Language-Processes
- I provide methods that control the execution of processes.
6.115.1 ProcessorScheduler class: instance creation
- new
- Error--new instances of ProcessorScheduler should not be created.
6.115.2 ProcessorScheduler: basic
- activePriority
- Answer the active process' priority
- activeProcess
- Answer the active process
- changePriorityOf: aProcess to: aPriority
- Private - Move aProcess to the execution list for aPriority, answer the new execution list
- processesAt: aPriority
- Private - Answer a linked list of processes at the given priority
- terminateActive
- Private - Terminate the active process
- yield
- Let the active process yield control to other processes
6.115.3 ProcessorScheduler: idle tasks
- idle
- Private - Call the next idle task
- idleAdd: aBlock
- Register aBlock to be executed when things are idle
6.115.4 ProcessorScheduler: printing
- printOn: aStream
- Store onto aStream a printed representation of the receiver
6.115.5 ProcessorScheduler: priorities
- highestPriority
- Answer the highest valid priority
- highIOPriority
- Answer the priority for system high-priority I/O processes, such as a process handling input from a network.
- lowestPriority
- Answer the lowest valid priority
- lowIOPriority
- Answer the priority for system low-priority I/O processes. Examples are the process handling input from the user (keyboard, pointing device, etc.) and the process distributing input from a network.
- priorityName: priority
- Private - Answer a name for the given process priority
- rockBottomPriority
- Answer the lowest valid priority
- systemBackgroundPriority
- Answer the priority for system background-priority processes. Examples are an incremental garbage collector or status checker.
- timingPriority
- Answer the priority for system real-time processes.
- unpreemptedPriority
- Answer the highest priority avilable in the system; never create a process with this priority, instead use BlockClosure>>#valueWithoutPreemption.
- userBackgroundPriority
- Answer the priority for user background-priority processes
- userInterruptPriority
- Answer the priority for user interrupt-priority processes. Processes run at this level will preempt the window scheduler and should, therefore, not consume the processor forever.
- userSchedulingPriority
- Answer the priority for user standard-priority processes
6.115.6 ProcessorScheduler: storing
- storeOn: aStream
- Store onto aStream a Smalltalk expression which evaluates to the receiver
6.115.7 ProcessorScheduler: timed invocation
- isTimeoutProgrammed
- Private - Answer whether there is a pending call to #signal:atMilliseconds:
- signal: aSemaphore atMilliseconds: millis
- Private - signal 'aSemaphore' after 'millis' milliseconds have elapsed
- signal: aSemaphore onInterrupt: anIntegerSignalNumber
- Private - signal 'aSemaphore' when the given C signal occurs
|
