Re: "wait" loses signals

[Chet Ramey]

On 2/24/20 7:58 AM, Daniel Colascione wrote:

> No, it's not that much trouble to fix the bug. The techniques for fixing
> this kind of signal race are well-known. In particular, instead of
> waitpid, you use a self-pipe and signal the pipe in the signal handler,
> and you have a signal handler for SIGCHLD. 

You've just substituted a real IPC mechanism (pipes) for the one people
are trying to make signals into.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/