summaryrefslogtreecommitdiff
path: root/include/sys
diff options
context:
space:
mode:
Diffstat (limited to 'include/sys')
-rw-r--r--include/sys/wait.h135
1 files changed, 82 insertions, 53 deletions
diff --git a/include/sys/wait.h b/include/sys/wait.h
index be95c2202..2ba604de6 100644
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@@ -1,82 +1,84 @@
-/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991, 92, 93, 94, 96, 97, 98 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
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/*
* POSIX Standard: 3.2.1 Wait for Process Termination <sys/wait.h>
*/
#ifndef _SYS_WAIT_H
-
#define _SYS_WAIT_H 1
+
#include <features.h>
-#include <errno.h>
__BEGIN_DECLS
-#include <sys/types.h>
+#include <bits/types.h>
+
+#if defined __USE_XOPEN && !defined pid_t
+typedef __pid_t pid_t;
+# define pid_t pid_t
+#endif
/* This will define the `W*' macros for the flag
bits to `waitpid', `wait3', and `wait4'. */
-#include <waitflags.h>
+#include <bits/waitflags.h>
#ifdef __USE_BSD
/* 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) \
+# if defined __GNUC__ && !defined __cplusplus
+# define __WAIT_INT(status) \
(__extension__ ({ union { __typeof(status) __in; int __i; } __u; \
__u.__in = (status); __u.__i; }))
-#else
-#define __WAIT_INT(status) (*(int *) &(status))
-#endif
-
-/* This is the type of the argument to `wait'. 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. */
-
-/* g++ in gcc 2.6.1 doesn't work. Maybe 2.7.x. H.J. */
-#if !defined (__GNUC__) || defined (__cplusplus) || \
- __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) || \
- (defined(_MIT_POSIX_THREADS) && _MIT_POSIX_THREADS > 0)
-#define __WAIT_STATUS __ptr_t
-#define __WAIT_STATUS_DEFN __ptr_t
-#else
+# else
+# define __WAIT_INT(status) (*(int *) &(status))
+# endif
+
+/* This is the type of the argument to `wait'. The funky union
+ causes redeclarations with ether `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 || defined __cplusplus
+# 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 *
+ } __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_INT(status) (status)
+# define __WAIT_STATUS int *
+# define __WAIT_STATUS_DEFN int *
#endif /* Use BSD. */
/* This will define all the `__W*' macros. */
-#include <waitstatus.h>
+#include <bits/waitstatus.h>
#define WEXITSTATUS(status) __WEXITSTATUS(__WAIT_INT(status))
#define WTERMSIG(status) __WTERMSIG(__WAIT_INT(status))
@@ -86,9 +88,20 @@ typedef union
#define WIFSTOPPED(status) __WIFSTOPPED(__WAIT_INT(status))
#ifdef __USE_BSD
-#define WCOREDUMP(status) __WCOREDUMP(__WAIT_INT(status))
-#define W_EXITCODE(ret, sig) __W_EXITCODE(ret, sig)
-#define W_STOPCODE(sig) __W_STOPCODE(sig)
+# 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)
+#endif
+
+/* The following values are used by the `waitid' function. */
+#if defined __USE_SVID || defined __USE_XOPEN
+typedef enum
+{
+ P_ALL, /* Wait for any child. */
+ P_PID, /* Wait for specified process. */
+ P_PGID /* Wait for members of process group. */
+} idtype_t;
#endif
@@ -99,8 +112,8 @@ extern __pid_t wait __P ((__WAIT_STATUS __stat_loc));
#ifdef __USE_BSD
/* Special values for the PID argument to `waitpid' and `wait4'. */
-#define WAIT_ANY (-1) /* Any process. */
-#define WAIT_MYPGRP 0 /* Any process in my process group. */
+# define WAIT_ANY (-1) /* Any process. */
+# define WAIT_MYPGRP 0 /* Any process in my process group. */
#endif
/* Wait for a child matching PID to die.
@@ -115,11 +128,25 @@ extern __pid_t wait __P ((__WAIT_STATUS __stat_loc));
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 __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
+
+#if defined __USE_SVID || defined __USE_XOPEN
+# define __need_siginfo_t
+# include <bits/siginfo.h>
+/* Wait for a childing matching IDTYPE and ID to change the status and
+ place appropriate information in *INFOP.
+ If IDTYPE is P_PID, match any process whose process ID is ID.
+ If IDTYPE is P_PGID, match any process whose process group is ID.
+ If IDTYPE is P_ALL, match any process.
+ If the WNOHANG bit is set in OPTIONS, and that child
+ is not already dead, clear *INFOP and return 0. If successful, store
+ exit code and status in *INFOP. */
+extern int waitid __P ((idtype_t __idtype, __id_t __id, siginfo_t *__infop,
+ int __options));
+#endif
+
+#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
/* This being here makes the prototypes valid whether or not
we have already included <sys/resource.h> to define `struct rusage'. */
struct rusage;
@@ -129,14 +156,16 @@ struct rusage;
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));
+#endif
+
+#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;
/* PID is like waitpid. Other args are like wait3. */
-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. */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 08:12:16 +0000