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/* Define how to access the structure that the wait system call stores.
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On many systems, there is a structure defined for this. |
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But on vanilla-ish USG systems there is not. */ |
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#ifndef HAVE_WAIT_STRUCT |
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#define WAITTYPE int |
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#define WIFSTOPPED(w) (((w)&0377) == 0177) |
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#define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0) |
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#define WIFEXITED(w) (((w)&0377) == 0) |
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#define WRETCODE(w) ((w) >> 8) |
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#define WSTOPSIG(w) ((w) >> 8) |
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#define WCOREDUMP(w) (((w)&0200) != 0) |
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#define WTERMSIG(w) ((w) & 0177) |
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#define WSETEXIT(w, status) ((w) = (status)) |
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#define WSETSTOP(w,sig) ((w) = (0177 | ((sig) << 8))) |
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#else |
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#include <sys/wait.h> |
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#define WAITTYPE union wait |
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#define WRETCODE(w) (w).w_retcode |
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#define WSTOPSIG(w) (w).w_stopsig |
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#define WCOREDUMP(w) (w).w_coredump |
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#define WTERMSIG(w) (w).w_termsig |
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#define WSETEXIT(w, status) ((w).w_status = (status)) |
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#define WSETSTOP(w,sig) \ |
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((w).w_stopsig = (sig), (w).w_coredump = 0, (w).w_termsig = 0177) |
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#endif |
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