From a3acbf46947e52ff596461a4cf6f539884c9dbbd Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 3 May 1999 07:29:06 +0000 Subject: 19990502 sourceware import --- include/wait.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 include/wait.h (limited to 'include/wait.h') diff --git a/include/wait.h b/include/wait.h new file mode 100644 index 000000000..fa3c9ccb1 --- /dev/null +++ b/include/wait.h @@ -0,0 +1,63 @@ +/* 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 + 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 + -- cgit v1.2.3