javax.safetycritical

Class ManagedMemory

java.lang.Object

javax.realtime.MemoryArea

javax.safetycritical.ManagedMemory

All Implemented Interfaces:

AllocationContext

@SCJAllowed
public abstract class ManagedMemory
extends MemoryArea

Managed memory is a scoped memory area that is managed by a mission.

Version:

1.2; - December 2013

Author:

Anders P. Ravn, Aalborg University, apr@cs.aau.dk,
Hans Søndergaard, VIA University College, Denmark, hso@via.dk

Method Summary

Methods

Modifier and Type	Method and Description
static void	enterPrivateMemory(int size, java.lang.Runnable logic) Invoke the run method of logic with a fresh private memory area that is immediately nested within the current ManagedMemory area, sized to provide size bytes of free memory as the current allocation area.
void	executeInArea(java.lang.Runnable logic) Executes logic in this memory area, with no cleanup and no pointer reset at the end.
static void	executeInAreaOf(java.lang.Object obj, java.lang.Runnable logic)
static void	executeInOuterArea(java.lang.Runnable logic)
long	getRemainingBackingStore()

Methods inherited from class javax.realtime.MemoryArea

getMemoryArea, memoryConsumed, memoryRemaining, size

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

executeInArea

@SCJAllowed
public void executeInArea(java.lang.Runnable logic)
                   throws java.lang.IllegalArgumentException

Executes logic in this memory area, with no cleanup and no pointer reset at the end.

Parameters:

logic - The Runnable object whose run() method shall be executed.

Throws:

java.lang.IllegalArgumentException - If logic is null.

enterPrivateMemory

@SCJAllowed
public static void enterPrivateMemory(int size,
                                 java.lang.Runnable logic)
                               throws java.lang.IllegalStateException

Invoke the run method of logic with a fresh private memory area that is immediately nested within the current ManagedMemory area, sized to provide size bytes of free memory as the current allocation area.

Parameters:

size - is the number of free bytes within the inner-nested private memory.

logic - provides the run method that is to be executed within the inner-nested private memory area.

Throws:

java.lang.IllegalStateException

executeInAreaOf

@SCJAllowed
public static void executeInAreaOf(java.lang.Object obj,
                              java.lang.Runnable logic)

executeInOuterArea

@SCJAllowed
public static void executeInOuterArea(java.lang.Runnable logic)

getRemainingBackingStore

@SCJAllowed
public long getRemainingBackingStore()

Relative_to_SCJ_Draft_Version_0.94:

the same as memoryRemaining() in MemoryArea?

Returns:

the size of the remaining memory available to the current ManagedMemory area.