Consider a HeapManager m, as shown below, with an initial, empty memory array of 11 words, i.e., m = new HeapManager (new int[11]). Assume that the HeapManager implements best-fit mechanism for allocate and coalescing adjacent free blocks for deallocate. Also consider a program that needs the following ordered sequence of memory allocation and deallocation service. a = m.allocate(3); b = m.allocate(1); c = m.allocate(2); d = m.allocate(1) m.deallocate(a); m.deallocate(d); e = m.allocate(1); m.deallocate(b); m.allocate(5); Is the HeapManager able to fulfill the above sequence of memory service request? Explain why it is or not.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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  1. Consider a HeapManager m, as shown below, with an initial, empty memory array of 11 words, i.e.,

m = new HeapManager (new int[11]).

Assume that the HeapManager implements best-fit mechanism for allocate and coalescing adjacent free blocks for deallocate.

Also consider a program that needs the following ordered sequence of memory allocation and deallocation service.

a = m.allocate(3);

b = m.allocate(1);

c = m.allocate(2);

d = m.allocate(1)

m.deallocate(a);

m.deallocate(d);

e = m.allocate(1);

m.deallocate(b);

m.allocate(5);

Is the HeapManager able to fulfill the above sequence of memory service request? Explain why it is or not.

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