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time-out based operations. Nearly all other classes in the package |
time-out based operations. Nearly all other classes in the package |
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contain operations based on time-outs in addition to indefinite waits. |
contain operations based on time-outs in addition to indefinite waits. |
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<p>In all cases that time-outs are used, the time-out specifies the |
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minimum time that the method should wait before indicating that it |
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timed-out. The virtual machine should make a "best effort" |
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to detect time-outs as soon as possible after they occur. Regardless |
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of the efforts of the virtual machine, the normal scheduling |
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mechanisms, and the need to re-acquire locks in many cases, can lead |
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to an indefinite amount of time elapsing between a time-out being |
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detected and a thread actually executing again after that time-out. |
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<h2>Synchronizers</h2> |
<h2>Synchronizers</h2> |
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Five classes aid common special-purpose synchronization idioms. |
Five classes aid common special-purpose synchronization idioms. |
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