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>
14 #define HAZARD_POINTER_COUNT 3
17 gpointer hazard_pointers [HAZARD_POINTER_COUNT];
18 } MonoThreadHazardPointers;
20 typedef void (*MonoHazardousFreeFunc) (gpointer p);
29 HAZARD_FREE_ASYNC_CTX,
32 void mono_thread_hazardous_free_or_queue (gpointer p, MonoHazardousFreeFunc free_func,
33 HazardFreeLocking locking, HazardFreeContext context);
34 void mono_thread_hazardous_try_free_all (void);
35 void mono_thread_hazardous_try_free_some (void);
36 MonoThreadHazardPointers* mono_hazard_pointer_get (void);
37 gpointer get_hazardous_pointer (gpointer volatile *pp, MonoThreadHazardPointers *hp, int hazard_index);
39 #define mono_hazard_pointer_set(hp,i,v) \
40 do { g_assert ((i) >= 0 && (i) < HAZARD_POINTER_COUNT); \
41 (hp)->hazard_pointers [(i)] = (v); \
42 mono_memory_write_barrier (); \
45 #define mono_hazard_pointer_get_val(hp,i) \
46 ((hp)->hazard_pointers [(i)])
48 #define mono_hazard_pointer_clear(hp,i) \
49 do { g_assert ((i) >= 0 && (i) < HAZARD_POINTER_COUNT); \
50 mono_memory_write_barrier (); \
51 (hp)->hazard_pointers [(i)] = NULL; \
55 void mono_thread_small_id_free (int id);
56 int mono_thread_small_id_alloc (void);
58 int mono_hazard_pointer_save_for_signal_handler (void);
59 void mono_hazard_pointer_restore_for_signal_handler (int small_id);
61 void mono_thread_smr_init (void);
62 void mono_thread_smr_cleanup (void);
63 #endif /*__MONO_HAZARD_POINTER_H__*/