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authorAndrew Cagney <cagney@redhat.com>2000-02-09 08:52:47 +0000
committerAndrew Cagney <cagney@redhat.com>2000-02-09 08:52:47 +0000
commit03f2053f967aada4d75ee44d41ef3f803fb2f2a9 (patch)
treef69efd8f83ed51c41f703944d9d2419b4ea228fd /gdb/gdb_wait.h
parentc1a8de50ed5d5848efb5152ba25d30a479a9bf84 (diff)
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Replace ../include/wait.h with gdb_wait.h.
Diffstat (limited to 'gdb/gdb_wait.h')
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diff --git a/gdb/gdb_wait.h b/gdb/gdb_wait.h
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+/* Standard wait macros.
+ Copyright 2000 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef GDB_WAIT_H
+#define GDB_WAIT_H
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h> /* POSIX */
+#else
+#ifdef HAVE_WAIT_H
+#include <wait.h> /* legacy */
+#endif
+#endif
+
+/* 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
+ <sys/wait.h> defines, since our code does not use waitpid() (but
+ NOTE exception for Linux below).
+ 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
+
+/*
+ * For native Linux we may use waitpid and the __WCLONE option.
+ * <GRIPE> It is of course dangerous not to use the REAL header file...
+ * </GRIPE>
+ */
+
+/* Bits in the third argument to `waitpid'. */
+#ifndef WNOHANG
+#define WNOHANG 1 /* Don't block waiting. */
+#endif
+
+#ifndef WUNTRACED
+#define WUNTRACED 2 /* Report status of stopped children. */
+#endif
+
+#ifndef __WCLONE
+#define __WCLONE 0x80000000 /* Wait for cloned process. */
+#endif
+
+#endif