Algorithms And Data Structures

Download e-book for kindle: High-Performance Java Platform Computing: Multithreaded and by Thomas W. Christopher

By Thomas W. Christopher

ISBN-10: 0130161640

ISBN-13: 9780130161642

Threading and concurrency are an important to development high-performance Java purposes -- yet they've got a name for complexity. excessive functionality Java Computing completely demystifies those complicated improvement ideas. It offers sensible programming suggestions, confirmed layout styles, and a rigorously-tested code library -- every little thing builders have to construct optimized Java software program for technical, enterprise, and E-commerce purposes. begin by way of figuring out how threading and concurrency can be utilized to unravel a large choice of functionality difficulties, allowing the development of extra strong networked purposes. grasp the Java 2 Threads periods, together with daemon threads, thread regulate, scheduling, and extra. overview the main difficulties of parallelism -- together with deadlocks, race stipulations, and synchronization -- and become aware of confirmed recommendations for averting or resolving them. eventually, grasp complicated strategies for development optimized concurrent code, together with Java screens, parallel execution of subroutines in shared reminiscence, and parallelizing loops.

Table of Contents

Cover

Contents

Chapter 1: Foundations

The von Neumann Machine
Flynn's Taxonomy
Control-Memory Taxonomy
Speedup and Efficiency
Amdahl's Law
Scalability
difficulties of Parallelism
Grain Size
Starvation
Deadlock
Flooding and Throttling
Layout
Latency
Scheduling
Programming Techniques
bankruptcy Wrap-up
Exercises

Chapter 2: Threads

Why is Multithreading Useful?
evaluation of the Java Threads Classes
Thread: the category answerable for Thread production and Execution
Runnable: Making Threads with out Extending the Thread Class
hi international: a primary instance of Multithreading
imposing Interfaces and lengthening periods: what is the Deal?
Concepts
somewhat of History
a few Definitions
Multiprogramming vs. Multitasking
o Java help for Multiprogramming
Concurrency vs. Parallelism vs. Distribution
Threads vs. Processes
o Unix Processes
Kernel-level vs. User-level Threads
speedy travel of Java Threads Functions
Construction
Daemon Threads
Thread Control
Very necessary Static Methods
Thread Synchronization
Cooperative Multitasking
Prioritized Scheduling
Miscellaneous prestige Methods
tools no longer coated Here
Exercises

Chapter three: Race stipulations and Mutual Exclusion

recognize Your Enemy!
Race Conditions
Egoist: a primary learn in Race Conditions
A note on Priorities
what's a Race Condition?
Race0 Class
severe Sections and item Locking
Race1 Class--Fixing Race0 with Synchronization
Conditions
Motivating the necessity for Conditions
Key item equipment had to paintings with stipulations in Java
dossier Copying: A Producer-Consumer Example
Locks-Binary Semaphores: An instance of utilizing Conditions
Race2: remodeled Race1 utilizing Locks
vintage Synchronization Mechanisms
Counting Semaphore
Barrier
Futures
Deadlock
what's Deadlock?
tips to be aware of while impasse Has Hit You?
4 stipulations of Deadlock
A vintage instance: eating Philosophers
bankruptcy Wrap-up
Exercises

Chapter four: Monitors

genuine displays and Java Monitors
Shared Classes
specific Queues
Overall
classification display screen within the Thread Package
Monitor's Methods
Interface MonitorCondition's Methods
Interface MonitorLock
Examples utilizing video display Objects
SimpleFuture
SharedTableOfQueues
Implementation of display screen, , and MonitorLock
video display access and Exit
Monitor.Condition
Monitor.Lock
The a number of Reader-Writer Monitors
Policies
coming into and Leaving the severe Sections
The Single-Reader-Writer Monitor
The Readers-Preferred Monitor
The Writers-Preferred Monitor
The Alternating Readers-Writers Monitor
The Take-a-Number Monitor
bankruptcy Wrap-up
Exercises

Chapter five: Parallel Execution of Subroutines in Shared Memory

growing and Joining
instance: Trapezoidal Numeric Integration
o Principles
o Interface
o Code
o Discussion
RunQueue
RunQueue Methods
o handling the created threads
o Termination
o Adjusting maxThreadsCreated
o Adjusting maxThreadsWaiting
o Adjusting waitTime
RunQueue Implementation
o Fields
o Xeqthreads
o Enqueueing Runnables
o Dequeueing Runnables
Recursive Shell variety: RunQueues and SimpleFutures
ShellsortDC
ShellsortDC type class
Accumulator
Accumulator Operations
styles of Use of Accumulators
o looking ahead to completion
o And or Or
o Associative, commutative operations
o Shared facts structures
utilizing Accumulators
Numeric Integration
TerminationGroup
Combinatorial Search
The 0-1 Knapsack Problem
Parallel Depth-first look for the Knapsack Problem
Knapsack2
o Constructor
o procedure gen()
o the hunt class
o equipment getSelected() and getProfit()
PriorityRunQueue
Branch-and-Bound with precedence Run Queues
department and certain for 0-1 Knapsack
o category Search
o classification SearchFactory
o Constructor
A Purer Branch-and-Bound 0-1 Knapsack
bankruptcy Wrap-up
Exercises

Chapter 6: Parallelizing Loops

Chore Graphs
accumulating Chores into Threads
instance: Warshall's Algorithm
Static Scheduling
Dynamic Scheduling
instance: Longest universal Subsequence
instance: Shell Sort
ShellsortBarrier class
type Sort
Performance
bankruptcy Wrap-up
Exercises

Chapter 7: Chores

The RunDelayed Interface
Futures
FutureFactory
Chore-programming Techniques
task Jars
Chore Graphs
Macro Dataflow
o Macro dataflow chore graphs
o Chore constructors
o Fetching operands
circulation of Control
o altering run queues
o change statement
o Create a continuation object
o Create a neighborhood continuation object
Macro Dataflow Examples: Vector Addition
Continuations to split Operand Fetch from Operation
Static Dataflow type and Storing Operands in Instructions
Fetching in continuations
Chore Examples: Warshall's Algorithm
WarshallDF1 and Warshall's set of rules in Dataflow
WarshallC1 via WarshallC3: Chores, yet no longer Dataflow
o WarshallC1
o WarshallC2
o WarshallC3
bankruptcy Wrap-up
Exercises

Chapter eight: Thread and Chore Synchronization

TerminationGroup
Barrier
BarrierFactory
AccumulatorFactory
Parallel Quicksort
process sort()
QuickSortThread2
strategy quicksort()
Shell Sort
bankruptcy Wrap-up

Chapter nine: Shared Tables of Queues

Shared Tables of Queues
Methods
enforcing Synchronizations utilizing a Shared desk of Queues
Named Futures
Named, Locked Records
Named Locks
Named Semaphores
Named Queues
listed Keys
enforcing extra Synchronizations and Shared Structures
Bounded buffers
I-structures
Barriers
Reactive Objects
speaking via a Shared desk of Queues
closure
Block
Performance
destiny Queues
Methods
Implementation of FutureQueue
o wanted behavior
o States of the longer term queue
instance of FutureQueue: The Queued Readers-Writers Monitor
o country of the monitor
destiny Tables
bankruptcy Wrap-up
Exercises

Chapter 10: Streams Essentials

The Streams Abstraction
construction your personal Stream
Caesar Cipher: Very uncomplicated Encryption
bankruptcy Wrap-Up
Exercises

Chapter eleven: Networking

Exploring the customer Side
companies: the web Story
vacation spot Sendmail
Java Networking: Socket and InetAddress
Java programs used
using OOP to create the GUI
The constructor
Layouts
occasion handling
Sending mail: the ultimate frontier
the place are The Services?
a sort and mild creation to the Server Side
Iterative Servers
basic Messaging Architecture
The Message Class
DateService and DateClient SMA Style
bankruptcy Wrap-Up
Exercises

Chapter 12: Coordination

regular Mailbox Invocations
GMI: pursuits and layout Overview
Callable: An Interface for Accepting Communication
CallMessage: An summary classification for Marshalling and Unmarshalling!
RemoteCallServer
RemoteCallServerDispatcher
RemoteCallClient
Memo: A distant Interface to SharedTableOfQueues
Design
MemoServer
MemoClient
Vector internal Product
Trapezoidal Integration
Warshall's Algorithm
bankruptcy Wrap-up
Exercises

Index

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Extra info for High-Performance Java Platform Computing: Multithreaded and Networked Programming

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Now, it is a good idea to investigate the threads support provided with your Java tool set. Quick Tour of Java Threads Functions We conclude the chapter with a quick overview of the different methods supported in the Java Thread class. Much like other Java classes, the Thread class provides a number of static methods (class methods that do not require an instance) and instance methods. Construction The Thread class contains many constructors. We will not enumerate all of them here; however, we will discuss each of the parameters that can be specified in the various constructors and why you might want to use them.

In order to construct what looks like a perfectly beautiful (or atrocious) looking Web page in your browser window, the Web browser may, in fact, have to issue multiple so-called HTTP requests to obtain all of the parts needed to construct your Web page. , Mosaic, the mother of Netscape) would issue HTTP requests serially in order to obtain each of the parts. The executive summary is that it would take a long time to actually get the Web pages. It may not be immediately obvious why the performance is so bad; however, consider that each of the requests is posted separately and the Web browser must wait for each result separately.

One of the first innovations was batch systems—a batch of programs that are put on magnetic tape and executed by the expensive computer, one after another, thus saving the time of human programmers signing up for time and running their own programs. Another innovation was multiprogramming. This involves the machine’s memory becoming partitioned into several areas, each executing a different program stream. The processor could be switched from one to another, so that it could work on one program while another was waiting for I/O.

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