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91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/* Utility and Unix shadow routines for GNU Emacs support programs on NT.
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Copyright (C) 1994 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any later
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version.
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GNU Emacs is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along
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with GNU Emacs; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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Geoff Voelker (voelker@cs.washington.edu) 10-8-94
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*/
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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#define MAXPATHLEN _MAX_PATH
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/* Emulate sleep...we could have done this with a define, but that
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would necessitate including windows.h in the files that used it.
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This is much easier. */
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void
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nt_sleep(int seconds)
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{
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Sleep (seconds * 1000);
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}
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/* Get the current working directory. */
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int
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getwd (char *dir)
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{
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return GetCurrentDirectory (MAXPATHLEN, dir);
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}
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static HANDLE getppid_parent;
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static int getppid_ppid;
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int
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getppid(void)
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{
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char *ppid;
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DWORD result;
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ppid = getenv ("__PARENT_PROCESS_ID");
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if (!ppid)
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{
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printf("no pid.\n");
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return 0;
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}
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else
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{
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getppid_ppid = atoi (ppid);
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}
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if (!getppid_parent)
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{
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getppid_parent = OpenProcess (SYNCHRONIZE, FALSE, atoi(ppid));
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if (!getppid_parent)
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{
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printf ("Failed to open handle to parent process: %d\n",
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GetLastError());
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exit (1);
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}
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}
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result = WaitForSingleObject (getppid_parent, 0);
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switch (result)
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{
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case WAIT_TIMEOUT:
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/* The parent is still alive. */
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return getppid_ppid;
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case WAIT_OBJECT_0:
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/* The parent is gone. Return the pid of Unix init (1). */
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return 1;
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case WAIT_FAILED:
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default:
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printf ("Checking parent status failed: %d\n", GetLastError());
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exit (1);
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}
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}
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