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- ALARM C Library Procedures ALARM
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- NNAAMMEE
- alarm - schedule signal after specified time
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- SSYYNNOOPPSSIISS
- aallaarrmm((sseeccoonnddss))
- uunnssiiggnneedd sseeccoonnddss;;
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- DDEESSCCRRIIPPTTIIOONN
- TThhiiss iinntteerrffaaccee iiss mmaaddee oobbssoolleettee bbyy sseettiittiimmeerr((22))..
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- _A_l_a_r_m causes signal SIGALRM, see _s_i_g_v_e_c(2), 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.
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- Alarm requests are not stacked; successive calls reset the
- alarm clock. If the argument is 0, any alarm request is
- canceled. Because of scheduling delays, resumption of exe-
- cution of when the signal is caught may be delayed an arbi-
- trary amount. The longest specifiable delay time is
- 2147483647 seconds.
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- The return value is the amount of time previously remaining
- in the alarm clock.
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- SSEEEE AALLSSOO
- sigpause(2), sigvec(2), signal(3C), sleep(3), ualarm(3),
- usleep(3)
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- Sprite v1.0 May 27, 1986 1
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