1SLEEP(3) Linux Programmer's Manual SLEEP(3)
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6 sleep - sleep for the specified number of seconds
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9 #include <unistd.h>
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11 unsigned int sleep(unsigned int seconds);
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14 sleep() makes the calling thread sleep until seconds seconds have
15 elapsed or a signal arrives which is not ignored.
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18 Zero if the requested time has elapsed, or the number of seconds left
19 to sleep, if the call was interrupted by a signal handler.
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22 POSIX.1-2001.
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25 sleep() may be implemented using SIGALRM; mixing calls to alarm(2) and
26 sleep() is a bad idea.
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28 Using longjmp(3) from a signal handler or modifying the handling of
29 SIGALRM while sleeping will cause undefined results.
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32 alarm(2), nanosleep(2), signal(2), signal(7)
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35 This page is part of release 3.53 of the Linux man-pages project. A
36 description of the project, and information about reporting bugs, can
37 be found at http://www.kernel.org/doc/man-pages/.
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41GNU 2010-02-03 SLEEP(3)