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Python School Alarm Clock 1.2 (Default branch)
08-20-2008
PySchoolClock is an alarm clock that checks your local school closing listings on the Internet. If your school is closed, the alarm clock lets you sleep in. License: GNU General Public License v3 Changes:|
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alarm(3) Library Functions Manual alarm(3) Name alarm - schedule signal after specified time Syntax #include <unistd.h> unsigned alarm(seconds) unsigned seconds; Description The subroutine causes signal SIGALRM, see to be sent to the invoking process in a number of seconds given by the argument. Unless caught or ignored, the signal terminates the process. The requests are not stacked. Successive calls reset the alarm clock. If the argument is 0, any request is canceled. Because of schedul- ing delays, resumption of execution of when the signal is caught may be delayed an arbitrary amount. The longest specifiable delay time is 100000000 seconds. Values larger than 100000000 will be silently rounded down to 100000000. The return value is the amount of time previously remaining in the alarm clock. Environment When your program is compiled using the System V environment, rounds up any positive fraction of a second to the next second. When your program is compiled using the POSIX environment, takes a parameter of type unsigned, and returns a value of type unsigned. See Also getitimer(2), sigpause(2), sigvec(2), signal(3), sleep(3) alarm(3)