Real-Time Java™ Platform Programming

Mechanisms for Allocating from Scoped Memory

Scoped memory might be called “temporary immortal” memory. It is never garbage collected, but it has a limited lifetime—as long as any thread has access to it. The four types of scoped memory are summarized in Table 13-2:

Table 13-2. Types of scoped memory

Allocation Time	Name
Linear	LTMemory
Linear	LTPhysicalMemory
Variable	VTMemory
Variable	VTPhysicalMemory

Chapter 18 shows how memory can be allocated from particular areas of physical memory. Physical memory is mentioned in Table 13-2, but for the purposes of this chapter, it is equivalent to its nonphysical analog.

Allocation Time

Since objects in scoped memory are all freed together, the algorithm for allocation can be simple.

Algorithm 13–1 is ...