musl/include/sys/wait.h

#ifndef	_SYS_WAIT_H
#define	_SYS_WAIT_H
#ifdef __cplusplus
extern "C" {
#endif

#include <features.h>

#include <signal.h>

#define __NEED_pid_t
#define __NEED_id_t
#define __NEED_siginfo_t
#include <bits/alltypes.h>

typedef int idtype_t;

pid_t wait (int *);
int waitid (idtype_t, id_t, siginfo_t *, int);
pid_t waitpid (pid_t, int *, int );

#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#include <sys/resource.h>
pid_t wait3 (int *, int, struct rusage *);
pid_t wait4 (pid_t, int *, int, struct rusage *);
#endif

#define WNOHANG    1
#define WUNTRACED  2

#define WSTOPPED   2
#define WEXITED    4
#define WCONTINUED 8
#define WNOWAIT    0x1000000

#define __WNOTHREAD 0x20000000
#define __WALL      0x40000000
#define __WCLONE    0x80000000

#define P_ALL  0
#define P_PID  1
#define P_PGID 2

#define WEXITSTATUS(s) (((s) & 0xff00) >> 8)
#define WTERMSIG(s) ((s) & 0x7f)
#define WSTOPSIG(s) WEXITSTATUS(s)
#define WCOREDUMP(s) ((s) & 0x80)
#define WIFEXITED(s) (!WTERMSIG(s))
#define WIFSTOPPED(s) (((s) & 0xff) == 0x7f)
#define WIFSIGNALED(s) (((signed char) (((s) & 0x7f) + 1) >> 1) > 0)
#define WIFCONTINUED(s) ((s) == 0xffff)

#ifdef __cplusplus
}
#endif
#endif
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`#ifndef _SYS_WAIT_H`
			`#define _SYS_WAIT_H`
			`#ifdef __cplusplus`
			`extern "C" {`
			`#endif`

default features: make musl usable without feature test macros the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change. 2012-09-07 23:13:55 -04:00			`#include <features.h>`

include signal.h to avoid thorny __sigcontext/sigcontext issues this is explicitly allowed by POSIX 2011-04-21 14:21:57 -04:00			`#include <signal.h>`

initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`#define __NEED_pid_t`
			`#define __NEED_id_t`
			`#define __NEED_siginfo_t`
			`#include <bits/alltypes.h>`

			`typedef int idtype_t;`

			`pid_t wait (int *);`
			`int waitid (idtype_t, id_t, siginfo_t *, int);`
			`pid_t waitpid (pid_t, int *, int );`
prototype wait3 and wait4 2011-02-19 02:26:11 -05:00
support _BSD_SOURCE feature test macro patch by Isaac Dunham. matched closely (maybe not exact) to glibc's idea of what _BSD_SOURCE should make visible. 2012-05-22 21:52:08 -04:00			`#if defined(_GNU_SOURCE) \|\| defined(_BSD_SOURCE)`
prototype wait3 and wait4 2011-02-19 02:26:11 -05:00			`#include <sys/resource.h>`
			`pid_t wait3 (int , int, struct rusage );`
			`pid_t wait4 (pid_t, int , int, struct rusage );`
			`#endif`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
move wait.h macros out of bits. they do not vary. 2011-04-21 14:27:28 -04:00			`#define WNOHANG 1`
			`#define WUNTRACED 2`

			`#define WSTOPPED 2`
			`#define WEXITED 4`
			`#define WCONTINUED 8`
			`#define WNOWAIT 0x1000000`

wait.h: add linux specific, thread-related waitpid() flags these flags are needed in order to be able to handle lwp id's which the kernel returns after clone() calls for new threads via ptrace(PTRACE_GETEVENTMSG). fortunately, they're the same for all archs and in the reserved namespace. 2013-01-01 08:07:26 +01:00			`#define __WNOTHREAD 0x20000000`
			`#define __WALL 0x40000000`
			`#define __WCLONE 0x80000000`

move wait.h macros out of bits. they do not vary. 2011-04-21 14:27:28 -04:00			`#define P_ALL 0`
			`#define P_PID 1`
			`#define P_PGID 2`

			`#define WEXITSTATUS(s) (((s) & 0xff00) >> 8)`
			`#define WTERMSIG(s) ((s) & 0x7f)`
			`#define WSTOPSIG(s) WEXITSTATUS(s)`
			`#define WCOREDUMP(s) ((s) & 0x80)`
			`#define WIFEXITED(s) (!WTERMSIG(s))`
			`#define WIFSTOPPED(s) (((s) & 0xff) == 0x7f)`
			`#define WIFSIGNALED(s) (((signed char) (((s) & 0x7f) + 1) >> 1) > 0)`
			`#define WIFCONTINUED(s) ((s) == 0xffff)`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
			`#ifdef __cplusplus`
			`}`
			`#endif`
			`#endif`