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
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(). */
13 #define WIFEXITED(w) (((w)&0377) == 0)
14 #define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
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
22 #define WIFSTOPPED(w) ((w)&0x40)
25 #define WIFSTOPPED(w) (((w)&0377) == 0177)
28 #define WEXITSTATUS(w) ((w) >> 8) /* same as WRETCODE */
29 #define WTERMSIG(w) ((w) & 0177)
30 #define WSTOPSIG(w) ((w) >> 8)
32 /* These are not defined in POSIX, but are used by our programs. */
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)))
This page took 0.029648 seconds and 4 git commands to generate.