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Android Native Development Kit Cookbook

You're reading from   Android Native Development Kit Cookbook Create Android apps using Native C/C++ with the expert guidance contained in this cookbook. From basic routines to advanced multimedia development, it helps you harness the full power of Android NDK.

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Product type Paperback
Published in Mar 2013
Publisher Packt
ISBN-13 9781849691505
Length 346 pages
Edition 1st Edition
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Author (1):
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Liu Feipeng Liu Feipeng
Author Profile Icon Liu Feipeng
Liu Feipeng
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Toc

Table of Contents (16) Chapters Close

Android Native Development Kit Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Hello NDK 2. Java Native Interface FREE CHAPTER 3. Build and Debug NDK Applications 4. Android NDK OpenGL ES API 5. Android Native Application API 6. Android NDK Multithreading 7. Other Android NDK API 8. Porting and Using the Existing Libraries with Android NDK 9. Porting an Existing Application to Android with NDK Index

Synchronizing native threads with mutex at Android NDK


This recipe discusses how to use pthread mutex at Android NDK.

How to do it...

The following steps help to create an Android project that demonstrates the usage of pthread mutex:

  1. Create an Android application named NativeThreadsMutex. Set the package name as cookbook.chapter6.nativethreadsmutex. Refer to the Loading native libraries and registering native methods recipe in Chapter 2, Java Native Interface for more detailed instructions.

  2. Right-click on the project NativeThreadsMutex, select Android Tools | Add Native Support.

  3. Add a Java file named MainActivity.java under the cookbook.chapter6.nativethreadsmutex package. This Java file simply loads the native NativeThreadsMutex library and calls the native jni_start_threads method.

  4. Add two files named mylog.h and NativeThreadsMutex.cpp in the jni folder. NativeThreadsMutex.cpp contains the code to start two threads. The two threads will update a shared counter. A part of the code is shown...

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