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Dr. Douglas C. Schmidt Stephen D. Huston C++ Network Programming - Systematic Reuse with ACE and Frameworks Dr. Douglas C. Schmidt Stephen D. Huston

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“hs˙bo

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page i

C++ Network Programming

Systematic Reuse with ACE and Frameworks

Dr. Douglas C. Schmidt Stephen D. Huston

“hs˙bo

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“hs˙b

2001

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Contents

About this Book vii

1 Object-Oriented Frameworks for Network Programming 1

1.1 An Overview of Object-Oriented Frameworks . . . . . . . . 1

1.2 Applying Frameworks to Network Programming . . . . . . 4

1.3 An Overview of the ACE Frameworks . . . . . . . . . . . . . 7

1.4 Comparing Frameworks with Other Reuse Techniques . . 10

1.5 Example: A Networked Logging Service . . . . . . . . . . . 16

1.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2 Service and Conﬁguration Design Dimensions 23

2.1 Service Design Dimensions . . . . . . . . . . . . . . . . . . 23

2.1.1 Short- vs. Long-Duration Services . . . . . . . . . . 24

2.1.2 Internal vs. External Services . . . . . . . . . . . . . 24

2.1.3 Stateful vs. Stateless Services . . . . . . . . . . . . . 26

2.1.4 Layered/Modular vs. Monolithic Services . . . . . . 27

2.1.5 Single- vs. Multi-Service Servers . . . . . . . . . . . 30

2.1.6 One-shot vs. Standing Servers . . . . . . . . . . . . . 31

2.2 Conﬁguration Design Dimensions . . . . . . . . . . . . . . . 33

2.2.1 Static vs. Dynamic Naming . . . . . . . . . . . . . . . 33

2.2.2 Static vs. Dynamic Linking . . . . . . . . . . . . . . . 33

2.2.3 Static vs. Dynamic Conﬁguration . . . . . . . . . . . 35

2.3 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

iii

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CONTENTS

3 The ACE Reactor Framework 39

3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.2 The ACE

Time Value Class . . . . . . . . . . . . . . . . . . . 42

3.3 The ACE

Event Handler Class . . . . . . . . . . . . . . . . . 44

3.4 The ACE Timer Queue Classes . . . . . . . . . . . . . . . . 54

3.5 The ACE

Reactor Class . . . . . . . . . . . . . . . . . . . . . 61

3.6 The ACE

Select Reactor Class . . . . . . . . . . . . . . . . . 73

3.7 The ACE

TP Reactor Class . . . . . . . . . . . . . . . . . . . 81

3.8 The ACE

WFMO Reactor Class . . . . . . . . . . . . . . . . 84

3.9 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

4 The ACE Service Conﬁgurator Framework 91

4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

4.2 The ACE

Service Object Class . . . . . . . . . . . . . . . . . 94

4.3 The ACE

Service Repository and ACE Service Repository Iterator

Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

4.4 The ACE

Service Conﬁg Class . . . . . . . . . . . . . . . . . 109

4.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

5 The ACE Task Framework 121

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

5.2 The ACE

Message Queue Class . . . . . . . . . . . . . . . . 123

5.3 The ACE

Task Class . . . . . . . . . . . . . . . . . . . . . . . 139

5.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

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List of Figures

1.1 Deﬁning Characteristics of a Framework . . . . . . . . . . . . 3

1.2 Levels of Abstraction for Network Programming . . . . . . . . 5

1.3 The Layered Architecture of ACE . . . . . . . . . . . . . . . . 8

1.4 The Frameworks in ACE . . . . . . . . . . . . . . . . . . . . . 9

1.5 Class Library vs. Framework Architectures . . . . . . . . . . 11

1.6 Applying Class Libraries to Develop and Use ACE Frameworks 14

1.7 Component Architecture . . . . . . . . . . . . . . . . . . . . . 14

1.8 Processes and Daemons in the Networked Logging Service . 18

2.1 Internal vs. External Services . . . . . . . . . . . . . . . . . . 25

2.2 Layered/Modular vs. Monolithic Services . . . . . . . . . . . 27

2.3 Single-service vs. Multi-service Servers . . . . . . . . . . . . . 30

2.4 One-shot vs. Standing Servers . . . . . . . . . . . . . . . . . . 32

2.5 Static Linking vs. Dynamic Linking . . . . . . . . . . . . . . . 34

3.1 The ACE Reactor Framework Classes . . . . . . . . . . . . . . 40

3.2 The ACE

Time Value Class . . . . . . . . . . . . . . . . . . . . 43

3.3 The ACE

Event Handler Class . . . . . . . . . . . . . . . . . . 46

3.4 The ACE Timer Queue Classes . . . . . . . . . . . . . . . . . . 55

3.5 The ACE

Reactor Class . . . . . . . . . . . . . . . . . . . . . . 62

3.6 The ACE Reactor Class Hierarchy . . . . . . . . . . . . . . . . 68

3.7 Architecture of Reactor-based Logging Server . . . . . . . . . 70

3.8 The ACE

Select Reactor Framework Internals . . . . . . . . 75

3.9 The ACE

Select Reactor Notiﬁcation Mechanism . . . . . . 78

剩余169页未读，继续阅读

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2013-01-10

很好的共享，ACE的必选。

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Martínez, "Large-Scale Group Decision Making: A Systematic Review and a Critical Analysis," \emph{IEEE/CAA Journal of Automatica Sinica}, vol. 9, no. 6, pp. 949-966, 2022, doi: 10.1109/JAS.2022....

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好的，我会尽力解答您的问题，以下是详细步骤： 1.首先要安装 GLMsData 包，可以使用以下命令完成安装： ```R install.packages("GLMsData") ``` 2.安装完成后，载入 GLMsData 包和 belection 数据集： ...

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In programming, a method is a block of code that performs a specific task and can be called by other parts of the program. Methods allow programmers to organize code into reusable modules and make ...

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6. An underpriced security will plot A. on the security market line. B. below the security market line. C. above the security market line. D. either above or below the security market line depending on its covariance with the market. E. either above or below the security market line depending on its standard deviation.

The security market line represents the expected return of a security given its level of systematic risk (beta), as measured by its covariance with the market. An underpriced security is one that is ...

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R语言 fit th Poisson GLM with a logarithmic link function ，using the systematic component Count~Species+factor(Quadrat），when the pearson and deviance residuals are expected to be adequate,datasets:seabirds

Please write a scientific abstract for the article Efficacy of awake prone positioning in patients with covid-19 related hypoxemic respiratory failure: systematic review and meta-analysis of randomized trials in the style of BMG at google

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