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} // Thread sleep method: // On current CPU core, a synchronous context switch to another thread without putting // the current thread on the ready queue. // Must be holding "threadingSystemBusy" and disabled interrupts so that this method // doesn't get interrupted by the thread-switching timer which would call contextSwitchISR().
Busy-waiting itself can be made much less wasteful by using a delay function (e.g., sleep()) found in most operating systems. This puts a thread to sleep for a specified time, during which the thread will waste no CPU time. If the loop is checking something simple then it will spend most of its time asleep and will waste very little CPU time.
A few multi-core processors have a "power-conscious spin-lock" instruction that puts a processor to sleep, then wakes it up on the next cycle after the lock is freed. A spin-lock using such instructions is more efficient and uses less energy than spin locks with or without a back-off loop.
The event dispatching thread (EDT) is a background thread used in Java to process events from the Abstract Window Toolkit (AWT) graphical user interface event queue. It is an example of the generic concept of event-driven programming, that is popular in many other contexts than Java, for example, web browsers, or web servers.
The Military Sleep Method is simply a new way of marketing certain well-documented relaxation methods, and it may very well work, though the promise of two minutes is not particularly realistic.
On Windows, the Sleep() function takes a single parameter of the number of milliseconds to sleep. The Sleep() function is included in kernel32.dll. [1]The Sleep() function has a resolution no higher than the current timer resolution, typically 16ms but at minimum 1ms, adjustable via the timeBeginPeriod() family of "media timer" APIs.
For people with insomnia who spend a significant amount of their time in bed awake, feeling anxious and irritated, sleep restriction therapy can help boost their sleep efficiency, making the bed a ...
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