UNIX signal handler, wait for previous signal

Asked Aug 11 '23 at 07:20

Active Aug 11 '23 at 07:28

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In APUE, in section 10.10, after figure 10.7, the following paragraph was written

1- If the caller already has an alarm set, that alarm is erased by the first call to alarm(). We can correct this by looking at alarm()’s return value. If the number of seconds until some previously set alarm is less than the argument, then we should wait only until the existing alarm expires. If the previously set alarm will go off after ours, then before returning we should reset this alarm to occur at its designated time in the future.

My question is how can I implement these two cases in C?

edited Aug 11 '23 at 07:28

user207421

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asked Aug 11 '23 at 07:20

tahzibi

Seems clear to me. What's the difficulty? – user207421 Aug 11 '23 at 07:32
I don't know how to code – tahzibi Aug 11 '23 at 08:10
You should probably start with simpler projects that don't involve signals, which are notoriously tricky to get right, then, and come back to it when you have a good grasp of the essentials. – Shawn Aug 11 '23 at 09:09
Ok, Thank you sir. – tahzibi Aug 11 '23 at 09:40
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SO is not a code-writing service. And teaching you to program is far outside of scope. – ikegami Aug 11 '23 at 10:57

UNIX signal handler, wait for previous signal

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