waste of resources ?
hniksic at srce.hr
Mon Jun 7 22:38:08 CEST 1999
Bryan VanDeVen <bryanv at arlut.utexas.edu> writes:
> On sysV or Unix98 systems you may set the disposition of SIGCHLD to
> SIG_IGN (i.e., ignore death or a child signals) The watertight
> method is to catch SIGCHLD and have the handler call waitpid(...)
> with WNOHANG in a loop.
Except that when a signal arrives during an IO operation, it will be
canceled due to the EINTR brain-damage, and Python will throw an
exception. So if you expect your program to accept SIGCHLD signals at
random intervals, you'd better encase all your IO operation in a loop
read(...) # or whatever
except (IOError, os.error), detail:
if detail.args == errno.EINTR:
This problem with signals has been my long-standing gripe with Python.
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