63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* Define how to access the int that the wait system call stores.
|
|
This has been compatible in all Unix systems since time immemorial,
|
|
but various well-meaning people have defined various different
|
|
words for the same old bits in the same old int (sometimes claimed
|
|
to be a struct). We just know it's an int and we use these macros
|
|
to access the bits. */
|
|
|
|
/* The following macros are defined equivalently to their definitions
|
|
in POSIX.1. We fail to define WNOHANG and WUNTRACED, which POSIX.1
|
|
<sys/wait.h> defines, since our code does not use waitpid(). We
|
|
also fail to declare wait() and waitpid(). */
|
|
|
|
#ifndef WIFEXITED
|
|
#define WIFEXITED(w) (((w)&0377) == 0)
|
|
#endif
|
|
|
|
#ifndef WIFSIGNALED
|
|
#define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
|
|
#endif
|
|
|
|
#ifndef WIFSTOPPED
|
|
#ifdef IBM6000
|
|
|
|
/* Unfortunately, the above comment (about being compatible in all Unix
|
|
systems) is not quite correct for AIX, sigh. And AIX 3.2 can generate
|
|
status words like 0x57c (sigtrap received after load), and gdb would
|
|
choke on it. */
|
|
|
|
#define WIFSTOPPED(w) ((w)&0x40)
|
|
|
|
#else
|
|
#define WIFSTOPPED(w) (((w)&0377) == 0177)
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef WEXITSTATUS
|
|
#define WEXITSTATUS(w) (((w) >> 8) & 0377) /* same as WRETCODE */
|
|
#endif
|
|
|
|
#ifndef WTERMSIG
|
|
#define WTERMSIG(w) ((w) & 0177)
|
|
#endif
|
|
|
|
#ifndef WSTOPSIG
|
|
#define WSTOPSIG WEXITSTATUS
|
|
#endif
|
|
|
|
/* These are not defined in POSIX, but are used by our programs. */
|
|
|
|
#define WAITTYPE int
|
|
|
|
#ifndef WCOREDUMP
|
|
#define WCOREDUMP(w) (((w)&0200) != 0)
|
|
#endif
|
|
|
|
#ifndef WSETEXIT
|
|
#define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
|
|
#endif
|
|
|
|
#ifndef WSETSTOP
|
|
#define WSETSTOP(w,sig) ((w) = (0177 | ((sig) << 8)))
|
|
#endif
|
|
|