PR_Sleep 编辑

Causes the current thread to yield for a specified amount of time.

Syntax

#include <prthread.h>

/wiki/en-US/docs/Mozilla/Projects/NSPR/Reference/PRStatus PR_Sleep(/wiki/en-US/docs/Mozilla/Projects/NSPR/Reference/PRIntervalTime ticks);

Parameter

PR_Sleep has the following parameter:

ticks

The number of ticks you want the thread to sleep for (see /wiki/en-US/docs/Mozilla/Projects/NSPR/Reference/PRIntervalTime).

Returns

Calling PR_Sleep with a parameter equivalent to PR_INTERVAL_NO_TIMEOUT is an error and results in a PR_FAILURE error.

Description

PR_Sleep simply waits on a condition for the amount of time specified. If you set ticks to PR_INTERVAL_NO_WAIT, the thread yields.

If ticks is not PR_INTERVAL_NO_WAIT, PR_Sleep uses an existing lock, but has to create a new condition for this purpose. If you have already created such structures, it is more efficient to use them directly.

Calling PR_Sleep with the value of ticks set to PR_INTERVAL_NO_WAIT simply surrenders the processor to ready threads of the same priority. All other values of ticks cause PR_Sleep to block the calling thread for the specified interval.

Threads blocked in PR_Sleep are interruptible.