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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [gdb_wait.h] - Blame information for rev 104

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1 104 markom
/* Standard wait macros.
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   Copyright 2000 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#ifndef GDB_WAIT_H
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#define GDB_WAIT_H
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h> /* POSIX */
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#else
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#ifdef HAVE_WAIT_H
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#include <wait.h> /* legacy */
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#endif
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#endif
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/* Define how to access the int that the wait system call stores.
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   This has been compatible in all Unix systems since time immemorial,
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   but various well-meaning people have defined various different
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   words for the same old bits in the same old int (sometimes claimed
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   to be a struct).  We just know it's an int and we use these macros
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   to access the bits.  */
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/* The following macros are defined equivalently to their definitions
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   in POSIX.1.  We fail to define WNOHANG and WUNTRACED, which POSIX.1
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   <sys/wait.h> defines, since our code does not use waitpid() (but
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   NOTE exception for Linux below).
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   We also fail to declare wait() and waitpid().  */
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#ifndef WIFEXITED
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#define WIFEXITED(w)    (((w)&0377) == 0)
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#endif
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#ifndef WIFSIGNALED
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#define WIFSIGNALED(w)  (((w)&0377) != 0177 && ((w)&~0377) == 0)
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#endif
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#ifndef WIFSTOPPED
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#ifdef IBM6000
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/* Unfortunately, the above comment (about being compatible in all Unix
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   systems) is not quite correct for AIX, sigh.  And AIX 3.2 can generate
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   status words like 0x57c (sigtrap received after load), and gdb would
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   choke on it. */
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#define WIFSTOPPED(w)   ((w)&0x40)
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#else
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#define WIFSTOPPED(w)   (((w)&0377) == 0177)
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#endif
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#endif
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(w)  (((w) >> 8) & 0377) /* same as WRETCODE */
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#endif
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#ifndef WTERMSIG
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#define WTERMSIG(w)     ((w) & 0177)
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#endif
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#ifndef WSTOPSIG
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#define WSTOPSIG        WEXITSTATUS
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#endif
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/* These are not defined in POSIX, but are used by our programs.  */
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#define WAITTYPE        int
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#ifndef WCOREDUMP
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#define WCOREDUMP(w)    (((w)&0200) != 0)
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#endif
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#ifndef WSETEXIT
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# ifdef W_EXITCODE
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#define WSETEXIT(w,status) ((w) = W_EXITCODE(status,0))
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# else
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#define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
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# endif
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#endif
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#ifndef WSETSTOP
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# ifdef W_STOPCODE
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#define WSETSTOP(w,sig)    ((w) = W_STOPCODE(sig))
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# else
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#define WSETSTOP(w,sig)    ((w) = (0177 | ((sig) << 8)))
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# endif
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#endif
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/*
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 * For native Linux we may use waitpid and the __WCLONE option.
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 *  <GRIPE> It is of course dangerous not to use the REAL header file...
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 * </GRIPE>
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 */
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/* Bits in the third argument to `waitpid'.  */
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#ifndef WNOHANG
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#define WNOHANG         1       /* Don't block waiting.  */
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#endif
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#ifndef WUNTRACED
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#define WUNTRACED       2       /* Report status of stopped children.  */
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#endif
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#ifndef __WCLONE
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#define __WCLONE        0x80000000 /* Wait for cloned process.  */
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#endif
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#endif

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