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33 lines
843 B
Plaintext
33 lines
843 B
Plaintext
@node sigaction
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@section @code{sigaction}
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@findex sigaction
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POSIX specification: @url{http://www.opengroup.org/susv3xsh/sigaction.html}
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Gnulib module: ---
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Portability problems fixed by Gnulib:
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@itemize
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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This function is missing on some platforms:
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mingw.
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@item
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The symbolic value @code{SIG_IGN} for the @code{SIGCHLD} signal is equivalent
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to a signal handler
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@smallexample
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void handle_child (int sigchld)
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@{
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while (waitpid (-1, NULL, WNOHANG) > 0)
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;
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@}
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@end smallexample
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except that @code{SIG_IGN} for @code{SIGCHLD} has the effect that the children
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execution times are not accounted in the @code{times} function.
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On some platforms (BSD? SystemV? Linux?), you need to use the @code{sigaction}
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flag @code{SA_NOCLDWAIT} in order to obtain this behavior.
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@end itemize
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