5 * (C) Copyright 2011 Novell, Inc
8 * Permission is hereby granted, free of charge, to any person obtaining
9 * a copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sublicense, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * The above copyright notice and this permission notice shall be
17 * included in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #ifndef __MONO_LOCKFREEQUEUE_H__
30 #define __MONO_LOCKFREEQUEUE_H__
33 #include <mono/utils/mono-publib.h>
35 //#define QUEUE_DEBUG 1
37 typedef struct _MonoLockFreeQueueNode MonoLockFreeQueueNode
;
39 struct _MonoLockFreeQueueNode
{
40 MonoLockFreeQueueNode
* volatile next
;
47 MonoLockFreeQueueNode node
;
48 volatile gint32 in_use
;
49 } MonoLockFreeQueueDummy
;
51 #define MONO_LOCK_FREE_QUEUE_NUM_DUMMIES 2
54 MonoLockFreeQueueNode
* volatile head
;
55 MonoLockFreeQueueNode
* volatile tail
;
56 MonoLockFreeQueueDummy dummies
[MONO_LOCK_FREE_QUEUE_NUM_DUMMIES
];
57 volatile gint32 has_dummy
;
60 MONO_API
void mono_lock_free_queue_init (MonoLockFreeQueue
*q
);
62 MONO_API
void mono_lock_free_queue_node_init (MonoLockFreeQueueNode
*node
, gboolean poison
);
63 MONO_API
void mono_lock_free_queue_node_unpoison (MonoLockFreeQueueNode
*node
);
65 MONO_API
void mono_lock_free_queue_enqueue (MonoLockFreeQueue
*q
, MonoLockFreeQueueNode
*node
);
67 MONO_API MonoLockFreeQueueNode
* mono_lock_free_queue_dequeue (MonoLockFreeQueue
*q
);