CanRunOutOfMemory

AnnounceOutOfMemory AttemptMemoryRecoveryIn CheckPendingLowOnMemoryOften HandlePendingLowOnMemory HandlePendingOutOfMemory

Attributes

PendingLowOnMemory

Fields

Define Class CanRunOutOfMemory;     
    mixes in with Object;
    
    attribute PendingLowOnMemory: Boolean, noGetter, noSetter;
        // corresponding heap in low memory state, we are about to handle
        // inheritor hooks up with actual heap and returns true if
        // emergency buffer used but not yet in low on memory state

    operation HandlePendingLowOnMemory(), noMethod;
        // announce, advance to low on memory state
    operation CheckPendingLowOnMemoryOften(): Boolean, noMethod;
        // see if low on memory is pending, processs if true, advance state to low on memory

    operation HandlePendingOutOfMemory(), noMethod;
        // call when pending out of memory, advances to out of memory state, 
        // does all container local handling    
    operation AnnounceOutOfMemory(), noMethod;
        // call to spread the word about out of memory

    operation AttemptMemoryRecoveryIn(): Boolean, noMethod;
        // attempts to recover from both out and/or low on memory, returns true if container 
        // is no longer in low on memory
end class;