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* doc/gnulib-intro.texi (Target Platforms): Classify MSVC as "rarely tested". * doc/posix-functions/*.texi: Update with info about MSVC 9. * doc/posix-headers/*.texi: Likewise. * doc/pastposix-functions/*.texi: Likewise. * doc/glibc-functions/*.texi: Likewise. * doc/glibc-headers/*.texi: Likewise.
63 lines
1.5 KiB
Plaintext
63 lines
1.5 KiB
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/onlinepubs/9699919799/functions/sigaction.html}
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Gnulib module: sigaction
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Portability problems 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, MSVC 9.
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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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POSIX recommends that when specifying SA_RESETHAND, SA_NODEFER must
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also be specified.
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@item
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Support for SA_ONSTACK is missing on some platforms:
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mingw, MSVC 9, cygwin.
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@item
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Support for SA_SIGINFO is missing on some platforms:
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mingw, MSVC 9, Interix 3.5.
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@item
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Support for SIGCHLD, and thus for SA_NOCLDSTOP and SA_NOCLDWAIT, is
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missing on some platforms:
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mingw, MSVC 9.
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@item
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Support for SA_RESETHAND is missing on some platforms:
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NonStop.
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@item
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Support for SA_RESTART is missing on some platforms:
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mingw, MSVC 9, NonStop.
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@item
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In spite of having SA_SIGACTION, struct sigaction lacks the
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sa_sigaction member on some platforms:
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Irix 5.3.
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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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