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Annotation of GNUtools/debug/gdb/include/wait.h, revision 1.1.1.1

1.1       root        1: /* Define how to access the int that the wait system call stores.
                      2:    This has been compatible in all Unix systems since time immemorial,
                      3:    but various well-meaning people have defined various different
                      4:    words for the same old bits in the same old int (sometimes claimed
                      5:    to be a struct).  We just know it's an int and we use these macros
                      6:    to access the bits.  */
                      7: 
                      8: /* The following macros are defined equivalently to their definitions
                      9:    in POSIX.1.  We fail to define WNOHANG and WUNTRACED, which POSIX.1
                     10:    <sys/wait.h> defines, since our code does not use waitpid().  We
                     11:    also fail to declare wait() and waitpid().  */   
                     12: 
                     13: #define WIFEXITED(w)   (((w)&0377) == 0)
                     14: #define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
                     15: #ifdef IBM6000
                     16: 
                     17: /* Unfortunately, the above comment (about being compatible in all Unix 
                     18:    systems) is not quite correct for AIX, sigh.  And AIX 3.2 can generate
                     19:    status words like 0x57c (sigtrap received after load), and gdb would
                     20:    choke on it. */
                     21: 
                     22: #define WIFSTOPPED(w)  ((w)&0x40)
                     23: 
                     24: #else
                     25: #define WIFSTOPPED(w)  (((w)&0377) == 0177)
                     26: #endif
                     27: 
                     28: #define WEXITSTATUS(w) ((w) >> 8)      /* same as WRETCODE */
                     29: #define WTERMSIG(w)    ((w) & 0177)
                     30: #define WSTOPSIG(w)    ((w) >> 8)
                     31: 
                     32: /* These are not defined in POSIX, but are used by our programs.  */
                     33: 
                     34: #define WAITTYPE       int
                     35: 
                     36: #define WCOREDUMP(w)   (((w)&0200) != 0)
                     37: #define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
                     38: #define WSETSTOP(w,sig)           ((w) = (0177 | ((sig) << 8)))

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