1{
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
7 *
8 * This file contains Original Code and/or Modifications of Original Code
9 * as defined in and that are subject to the Apple Public Source License
10 * Version 2.0 (the 'License'). You may not use this file except in
11 * compliance with the License. Please obtain a copy of the License at
12 * http://www.opensource.apple.com/apsl/ and read it before using this
13 * file.
14 *
15 * The Original Code and all software distributed under the License are
16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
20 * Please see the License for the specific language governing rights and
21 * limitations under the License.
22 *
23 * @APPLE_LICENSE_HEADER_END@
24 }
25//
26//  objc_sync.h
27//
28//  Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
29//
30
31//#include <objc/lobjc.h>
32
33// Begin synchronizing on 'obj'.
34// Allocates recursive pthread_mutex associated with 'obj' if needed.
35// Returns OBJC_SYNC_SUCCESS once lock is acquired.
36function objc_sync_enter(obj: id): cint; cdecl; external;
37
38// End synchronizing on 'obj'.
39// Returns OBJC_SYNC_SUCCESS or OBJC_SYNC_NOT_OWNING_THREAD_ERROR
40function objc_sync_exit(obj: id): cint; cdecl; external;
41
42// Temporarily release lock on 'obj' and wait for another thread to notify on 'obj'
43// Return OBJC_SYNC_SUCCESS, OBJC_SYNC_NOT_OWNING_THREAD_ERROR, OBJC_SYNC_TIMED_OUT
44function objc_sync_wait(obj: id; milliSecondsMaxWait: clonglong): cint; cdecl; external;
45
46// Wake up another thread waiting on 'obj'
47// Return OBJC_SYNC_SUCCESS, OBJC_SYNC_NOT_OWNING_THREAD_ERROR
48function objc_sync_notify(obj: id): cint; cdecl; external;
49
50// Wake up all threads waiting on 'obj'
51// Return OBJC_SYNC_SUCCESS, OBJC_SYNC_NOT_OWNING_THREAD_ERROR
52function objc_sync_notifyAll(obj: id): cint; cdecl; external;
53
54const
55	OBJC_SYNC_SUCCESS                 = 0;
56	OBJC_SYNC_NOT_OWNING_THREAD_ERROR = -1;
57	OBJC_SYNC_TIMED_OUT               = -2;
58	OBJC_SYNC_NOT_INITIALIZED         = -3;
59
60