2 * lock-free-queue.h: Lock free queue.
4 * (C) Copyright 2011 Novell, Inc
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15 * The above copyright notice and this permission notice shall be
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28 #ifndef __MONO_LOCKFREEQUEUE_H__
29 #define __MONO_LOCKFREEQUEUE_H__
32 #include <mono/utils/mono-publib.h>
34 //#define QUEUE_DEBUG 1
36 typedef struct _MonoLockFreeQueueNode MonoLockFreeQueueNode
;
38 struct _MonoLockFreeQueueNode
{
39 MonoLockFreeQueueNode
* volatile next
;
46 MonoLockFreeQueueNode node
;
47 volatile gint32 in_use
;
48 } MonoLockFreeQueueDummy
;
50 #define MONO_LOCK_FREE_QUEUE_NUM_DUMMIES 2
53 MonoLockFreeQueueNode
* volatile head
;
54 MonoLockFreeQueueNode
* volatile tail
;
55 MonoLockFreeQueueDummy dummies
[MONO_LOCK_FREE_QUEUE_NUM_DUMMIES
];
56 volatile gint32 has_dummy
;
59 MONO_API
void mono_lock_free_queue_init (MonoLockFreeQueue
*q
);
61 MONO_API
void mono_lock_free_queue_node_init (MonoLockFreeQueueNode
*node
, gboolean poison
);
62 MONO_API
void mono_lock_free_queue_node_unpoison (MonoLockFreeQueueNode
*node
);
64 MONO_API
void mono_lock_free_queue_enqueue (MonoLockFreeQueue
*q
, MonoLockFreeQueueNode
*node
);
66 MONO_API MonoLockFreeQueueNode
* mono_lock_free_queue_dequeue (MonoLockFreeQueue
*q
);