Download Ален Холаб. Приручаем потоки Java by Allen Holub PDF

By Allen Holub

Studying how you can write multithreaded purposes is the major to taking complete benefit of the Java platform. In Taming Java Threads, recognized columnist and Java specialist Allen Holub presents Java programmers with the knowledge they should write actual multithreaded courses - courses with genuine code. Holub presents an in-depth rationalization of ways threads paintings besides information regarding tips on how to resolve universal difficulties corresponding to deadlocks and race stipulations. He not just explains universal difficulties, but in addition presents the unusual ideas that mark the adaptation among production-level code and toy demos.Topics coated during this booklet comprise the structure of threads; the mutex and lock administration; situation variables and counting semaphores; timers, alarms, and swing thread safeguard; observers and multicasters; singletons, serious periods, and reader/writer locks; threads in an object-oriented international; and object-oriented threading architectures.While it's necessary to construct help for threading right into a Java software from the very starting, such a lot books at the matters of Java-UI building and Java networking slightly contact on threading themes. besides being a easy Java reference, this publication is a must-read for any Java developer.

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The only way for Thread 2 to enter wake_up() is for Thread 1 to exit take_a_nap(). Both threads are effectively suspended forever. Solve the problem by using a different strategy for suspension: class Right extends Thread { public synchronized void take_a_nap() { try { wait(); } catch(InterruptedException e) { /*do something reasonable*/} } } public synchronized void wake_up() { notify(); } } The lock is released by wait() before the thread is suspended, and the lock is reacquired before the wait() returns, so a second thread can now get into wake_up() to call notify().

Test Classes Most of my classes contain a static inner class called Test, which contains a main() that runs a unit test on the class. jar file that you ship. 48 Inner Classes I use inner classes heavily throughout the book. A program is simply easier to read and maintain if you define all symbols in the most restrictive scope possible. The same thinking that precludes you from moving your local variables out to class scope, should be applied to classes as well. They have no business being at package scope unless they're used by more than one class.

Asynch package, which I'll be presenting throughout the rest of the book. It seems, then, that a few notes on style are in order. Names I strongly believe that the best way to make your code self documenting is to carefully choose names that accurately reflect the purpose of the named thing. My names are always real English words or short phrases. I run my code through a spell checker to keep myself honest. ) For the most part, I do not abbreviate words. S. and educated in an American public school—fall into that category) can look up the word in a dictionary if they don't know what it means.

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