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Java Forum / General / June 2006shutdownNow() ExecutorService method
The Sun documentation says that shutdownNow() is only a "best-effort" attempt to end all processing tasks. Is it reasonable to assume that the Java implementation will attempt to end the tasks with either Thread.interrupt() (and code appropriately for that possibility) or some other transparent method with a high probability of success? I am using the 1.5 Windows implementation from Sun, so I would gather that in all likelihood coding for Thread.interrupt() will be sufficient, but I find the Sun documentation to be uncomforting.  SignatureChristopher Benson-Manica | I *should* know what I'm talking about - if I ataru(at)cyberspace.org | don't, I need to know. Flames welcome. > The Sun documentation says that shutdownNow() is only a "best-effort" > attempt to end all processing tasks. Is it reasonable to assume that [quoted text clipped - 4 lines] > that in all likelihood coding for Thread.interrupt() will be > sufficient, but I find the Sun documentation to be uncomforting. The JavaDocs say that "typical implementations" will cancel via Thread.interrupt(). This indicates that it is not required by the contract of this method that Thread.interrupt() actually be the mechanism used for cancelling tasks. In other words, I'd probably avoid using this shutdownNow() method if I were you. Perhaps if you were using a specific implementation (e.g. ThreadPoolExecutor), you could find a firmer, publicly documented contract. - Oliver > Perhaps if you were using a specific implementation (e.g. > ThreadPoolExecutor), you could find a firmer, publicly documented contract. I will take a look at using a ThreadPoolExecutor for this task. Thank you for your helpful reply. SignatureChristopher Benson-Manica | I *should* know what I'm talking about - if I ataru(at)cyberspace.org | don't, I need to know. Flames welcome. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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