-/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/*
#define _SYS_WAIT_H 1
#include <features.h>
-#include <gnu/types.h>
-#include <gnu/wait.h>
-
-
-#define WNOHANG __WNOHANG
-#define WUNTRACED __WUNTRACED
-
+__BEGIN_DECLS
-/* Encoding of the status word. */
+#include <gnu/types.h>
-#include <endian.h>
+/* This will define the `W*' macros for the flag
+ bits to `waitpid', `wait3', and `wait4'. */
+#include <waitflags.h>
#ifdef __USE_BSD
-union __wait
- {
-#ifdef __LITTLE_ENDIAN
- struct
- {
- unsigned int __w_termsig:7;
- unsigned int __w_coredump:1;
- unsigned int __w_retcode:8;
- unsigned int :16;
- } __wait_status;
-#else /* Big endian. */
- struct
- {
- unsigned int :16;
- unsigned int __w_retcode:8;
- unsigned int __w_coredump:1;
- unsigned int __w_termsig:7;
- } __wait_status;
-#endif /* Little endian. */
- };
-#define w_termsig __wait_status.__w_termsig
-#define w_coredump __wait_status.__w_coredump
-#define w_retcode __wait_status.__w_retcode
-#define w_stopsig w_retcode
+
+/* Lots of hair to allow traditional BSD use of `union wait'
+ as well as POSIX.1 use of `int' for the status word. */
#ifdef __GNUC__
#define __WAIT_INT(status) \
#endif
/* This is the type of the argument to `wait'.
- With GCC v2, this will be a strange union. */
-/* IGNORE(@This line MUST be split! m4 will not change it otherwise.@) */
-#define __WAIT_STATUS \
- PTR
+ NOTE: Since this functionality is volatile, I'm disabling the use of it for
+ now.
-#else /* Don't use BSD. */
+With GCC 2.6.1 and later, the funky union causes redeclarations with either
+ `int *' or `union wait *' to be allowed without complaint.
+ __WAIT_STATUS_DEFN is the type used in the actual function
+ definitions. */
+
+#if (!defined (__GNUC__) || __GNUC__ < 2 || \
+ /*(__GNUC__ == 2 && __GNUC_MINOR__ < 6)*/ 1)
+#define __WAIT_STATUS __ptr_t
+#define __WAIT_STATUS_DEFN __ptr_t
+#else
+/* This works in GCC 2.6.1 and later. */
+typedef union
+ {
+ union wait *__uptr;
+ int *__iptr;
+ } __WAIT_STATUS __attribute__ ((transparent_union));
+#define __WAIT_STATUS_DEFN int *
+#endif
+
+#else /* Don't use BSD. */
#define __WAIT_INT(status) (status)
+#define __WAIT_STATUS int *
+#define __WAIT_STATUS_DEFN int *
-#define __WAIT_STATUS int *
+#endif /* Use BSD. */
-#endif /* Use BSD. */
+/* This will define all the `__W*' macros. */
+#include <waitstatus.h>
#define WEXITSTATUS(status) __WEXITSTATUS(__WAIT_INT(status))
#define WTERMSIG(status) __WTERMSIG(__WAIT_INT(status))
#define WIFSTOPPED(status) __WIFSTOPPED(__WAIT_INT(status))
#ifdef __USE_BSD
+#define WCOREFLAG __WCOREFLAG
#define WCOREDUMP(status) __WCOREDUMP(__WAIT_INT(status))
#define W_EXITCODE(ret, sig) __W_EXITCODE(ret, sig)
#define W_STOPCODE(sig) __W_STOPCODE(sig)
/* Wait for a child to die. When one does, put its status in *STAT_LOC
and return its process ID. For errors, return (pid_t) -1. */
-extern __pid_t EXFUN(__wait, (__WAIT_STATUS __stat_loc));
-extern __pid_t EXFUN(wait, (__WAIT_STATUS __stat_loc));
+extern __pid_t __wait __P ((__WAIT_STATUS __stat_loc));
+extern __pid_t wait __P ((__WAIT_STATUS __stat_loc));
#ifdef __USE_BSD
/* Special values for the PID argument to `waitpid' and `wait4'. */
return PID and store the dead child's status in STAT_LOC.
Return (pid_t) -1 for errors. If the WUNTRACED bit is
set in OPTIONS, return status for stopped children; otherwise don't. */
-extern __pid_t EXFUN(__waitpid, (__pid_t __pid, int *__stat_loc,
- int __options));
+extern __pid_t __waitpid __P ((__pid_t __pid, int *__stat_loc,
+ int __options));
+extern __pid_t waitpid __P ((__pid_t __pid, int *__stat_loc,
+ int __options));
#ifdef __USE_BSD
+/* This being here makes the prototypes valid whether or not
+ we have already included <sys/resource.h> to define `struct rusage'. */
+struct rusage;
+
/* Wait for a child to exit. When one does, put its status in *STAT_LOC and
- return its process ID. For errors return (pid_t) -1. If USAGE is not nil,
- store information about the child's resource usage (as a `struct rusage')
- there. If the WUNTRACED bit is set in OPTIONS, return status for stopped
- children; otherwise don't. */
-extern __pid_t EXFUN(__wait3, (union __wait *__stat_loc,
- int __options, PTR __usage));
-#define wait3 __wait3
+ return its process ID. For errors return (pid_t) -1. If USAGE is not
+ nil, store information about the child's resource usage there. If the
+ WUNTRACED bit is set in OPTIONS, return status for stopped children;
+ otherwise don't. */
+extern __pid_t __wait3 __P ((__WAIT_STATUS __stat_loc,
+ int __options, struct rusage * __usage));
+extern __pid_t wait3 __P ((__WAIT_STATUS __stat_loc,
+ int __options, struct rusage * __usage));
/* PID is like waitpid. Other args are like wait3. */
-extern __pid_t EXFUN(__wait4, (__pid_t __pid, union __wait *__stat_loc,
- int __options, PTR __usage));
-#define wait4 __wait4
-#endif /* Use BSD. */
+extern __pid_t __wait4 __P ((__pid_t __pid, __WAIT_STATUS __stat_loc,
+ int __options, struct rusage *__usage));
+extern __pid_t wait4 __P ((__pid_t __pid, __WAIT_STATUS __stat_loc,
+ int __options, struct rusage *__usage));
+#endif /* Use BSD. */
-#define waitpid __waitpid
-#define wait __wait
+__END_DECLS
-#endif /* sys/wait.h */
+#endif /* sys/wait.h */
projects / kopensolaris-gnu / glibc.git / blobdiff