kopia lustrzana https://gitlab.com/sane-project/frontends
51 wiersze
1.2 KiB
C
51 wiersze
1.2 KiB
C
#ifdef HAVE_SIGPROCMASK
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# define SIGACTION sigaction
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#else
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/* Just enough backwards compatibility that we get by in the backends
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without making handstands. */
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# ifdef sigset_t
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# undef sigset_t
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# endif
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# ifdef sigemptyset
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# undef sigemptyset
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# endif
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# ifdef sigfillset
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# undef sigfillset
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# endif
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# ifdef sigaddset
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# undef sigaddset
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# endif
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# ifdef sigdelset
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# undef sigdelset
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# endif
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# ifdef sigprocmask
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# undef sigprocmask
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# endif
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# ifdef SIG_BLOCK
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# undef SIG_BLOCK
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# endif
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# ifdef SIG_UNBLOCK
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# undef SIG_UNBLOCK
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# endif
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# ifdef SIG_SETMASK
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# undef SIG_SETMASK
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# endif
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# define sigset_t int
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# define sigemptyset(set) do { *(set) = 0; } while (0)
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# define sigfillset(set) do { *(set) = ~0; } while (0)
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# define sigaddset(set,signal) do { *(set) |= sigmask (signal); } while (0)
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# define sigdelset(set,signal) do { *(set) &= ~sigmask (signal); } while (0)
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# define sigaction(sig,new,old) sigvec (sig,new,old)
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/* Note: it's not safe to just declare our own "struct sigaction" since
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some systems (e.g., some versions of OpenStep) declare that structure,
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but do not implement sigprocmask(). Hard to believe, aint it? */
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# define SIGACTION sigvec
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# define SIG_BLOCK 1
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# define SIG_UNBLOCK 2
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# define SIG_SETMASK 3
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#endif /* !HAVE_SIGPROCMASK */
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