/[pcsx2_0.9.7]/trunk/3rdparty/w32pthreads/sched_getscheduler.c
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Contents of /trunk/3rdparty/w32pthreads/sched_getscheduler.c

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Revision 31 - (show annotations) (download)
Tue Sep 7 03:24:11 2010 UTC (9 years, 11 months ago) by william
File MIME type: text/plain
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committing r3113 initial commit again...
1 /*
2 * sched_getscheduler.c
3 *
4 * Description:
5 * POSIX thread functions that deal with thread scheduling.
6 *
7 * --------------------------------------------------------------------------
8 *
9 * Pthreads-win32 - POSIX Threads Library for Win32
10 * Copyright(C) 1998 John E. Bossom
11 * Copyright(C) 1999,2005 Pthreads-win32 contributors
12 *
13 * Contact Email: rpj@callisto.canberra.edu.au
14 *
15 * The current list of contributors is contained
16 * in the file CONTRIBUTORS included with the source
17 * code distribution. The list can also be seen at the
18 * following World Wide Web location:
19 * http://sources.redhat.com/pthreads-win32/contributors.html
20 *
21 * This library is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU Lesser General Public
23 * License as published by the Free Software Foundation; either
24 * version 2 of the License, or (at your option) any later version.
25 *
26 * This library is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
29 * Lesser General Public License for more details.
30 *
31 * You should have received a copy of the GNU Lesser General Public
32 * License along with this library in the file COPYING.LIB;
33 * if not, write to the Free Software Foundation, Inc.,
34 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
35 */
36
37 #include "ptw32pch.h"
38 #include "sched.h"
39
40 int
41 sched_getscheduler (pid_t pid)
42 {
43 /*
44 * Win32 only has one policy which we call SCHED_OTHER.
45 * However, we try to provide other valid side-effects
46 * such as EPERM and ESRCH errors.
47 */
48 if (0 != pid)
49 {
50 int selfPid = (int) GetCurrentProcessId ();
51
52 if (pid != selfPid)
53 {
54 HANDLE h =
55 OpenProcess (PROCESS_QUERY_INFORMATION, PTW32_FALSE, (DWORD) pid);
56
57 if (NULL == h)
58 {
59 errno =
60 (GetLastError () ==
61 (0xFF & ERROR_ACCESS_DENIED)) ? EPERM : ESRCH;
62 return -1;
63 }
64 }
65 }
66
67 return SCHED_OTHER;
68 }

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