From a044c713b054695326df96e7710dd5c8f80ad8c2 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Tue, 28 Sep 2004 01:42:49 +0000
Subject: * posix/tst-waitid.c (do_test): Add tests for waitpid with
WCONTINUED.
* posix/sys/wait.h [__WIFCONTINUED] (WIFCONTINUED): New macro.
* stdlib/stdlib.h [__WIFCONTINUED] (WIFCONTINUED): New macro.
* sysdeps/generic/bits/waitstatus.h (__W_CONTINUED): New macro.
[WCONTINUED] (__WIFCONTINUED): New macro.
(__WIFSIGNALED): Rewritten to exclude __W_CONTINUED value, and have no
branches.
---
bits/waitstatus.h | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
(limited to 'bits/waitstatus.h')
diff --git a/bits/waitstatus.h b/bits/waitstatus.h
index 982c9dbb28..98da41858e 100644
--- a/bits/waitstatus.h
+++ b/bits/waitstatus.h
@@ -1,5 +1,5 @@
/* Definitions of status bits for `wait' et al.
- Copyright (C) 1992, 1994, 1996, 1997, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1992,1994,1996,1997,2000,2004 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
@@ -38,23 +38,25 @@
#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
/* Nonzero if STATUS indicates termination by a signal. */
-#ifdef __GNUC__
-# define __WIFSIGNALED(status) \
- (__extension__ ({ int __status = (status); \
- !__WIFSTOPPED(__status) && !__WIFEXITED(__status); }))
-#else /* Not GCC. */
-# define __WIFSIGNALED(status) (!__WIFSTOPPED(status) && !__WIFEXITED(status))
-#endif /* GCC. */
+#define __WIFSIGNALED(status) \
+ (((signed char) ((((((status) + 1) & 0xffff) - 1) & 0x7f) + 1) >> 1) > 0)
/* Nonzero if STATUS indicates the child is stopped. */
#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
+/* Nonzero if STATUS indicates the child continued after a stop. We only
+ define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */
+#ifdef WCONTINUED
+# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
+#endif
+
/* Nonzero if STATUS indicates the child dumped core. */
#define __WCOREDUMP(status) ((status) & __WCOREFLAG)
/* Macros for constructing status values. */
#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
+#define __W_CONTINUED 0xffff
#define __WCOREFLAG 0x80
--
cgit v1.2.3