2 * hazard-pointer.h: Hazard pointer related code.
4 * (C) Copyright 2011 Novell, Inc
5 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
7 #ifndef __MONO_HAZARD_POINTER_H__
8 #define __MONO_HAZARD_POINTER_H__
11 #include <mono/utils/mono-compiler.h>
12 #include <mono/utils/mono-membar.h>
13 #include <mono/utils/mono-publib.h>
15 #define HAZARD_POINTER_COUNT 3
18 gpointer hazard_pointers [HAZARD_POINTER_COUNT];
19 } MonoThreadHazardPointers;
21 typedef void (*MonoHazardousFreeFunc) (gpointer p);
30 HAZARD_FREE_ASYNC_CTX,
33 MONO_API gboolean mono_thread_hazardous_try_free (gpointer p, MonoHazardousFreeFunc free_func);
34 void mono_thread_hazardous_queue_free (gpointer p, MonoHazardousFreeFunc free_func);
36 void mono_thread_hazardous_try_free_all (void);
37 void mono_thread_hazardous_try_free_some (void);
38 MonoThreadHazardPointers* mono_hazard_pointer_get (void);
39 gpointer get_hazardous_pointer (gpointer volatile *pp, MonoThreadHazardPointers *hp, int hazard_index);
41 #define mono_hazard_pointer_set(hp,i,v) \
42 do { g_assert ((i) >= 0 && (i) < HAZARD_POINTER_COUNT); \
43 (hp)->hazard_pointers [(i)] = (v); \
44 mono_memory_write_barrier (); \
47 #define mono_hazard_pointer_get_val(hp,i) \
48 ((hp)->hazard_pointers [(i)])
50 #define mono_hazard_pointer_clear(hp,i) \
51 do { g_assert ((i) >= 0 && (i) < HAZARD_POINTER_COUNT); \
52 mono_memory_write_barrier (); \
53 (hp)->hazard_pointers [(i)] = NULL; \
57 void mono_thread_small_id_free (int id);
58 int mono_thread_small_id_alloc (void);
60 int mono_hazard_pointer_save_for_signal_handler (void);
61 void mono_hazard_pointer_restore_for_signal_handler (int small_id);
63 typedef void (*MonoHazardFreeQueueSizeCallback)(size_t size);
64 void mono_hazard_pointer_install_free_queue_size_callback (MonoHazardFreeQueueSizeCallback cb);
66 void mono_thread_smr_init (void);
67 void mono_thread_smr_cleanup (void);
68 #endif /*__MONO_HAZARD_POINTER_H__*/