/**
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* \file
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* Hazard pointer related code.
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*
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* (C) Copyright 2011 Novell, Inc
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* Licensed under the MIT license. See LICENSE file in the project root for full license information.
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*/
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#ifndef __MONO_HAZARD_POINTER_H__
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#define __MONO_HAZARD_POINTER_H__
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#include <glib.h>
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#include <mono/utils/mono-compiler.h>
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#include <mono/utils/mono-membar.h>
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#include <mono/utils/mono-publib.h>
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#define HAZARD_POINTER_COUNT 3
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typedef struct {
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gpointer hazard_pointers [HAZARD_POINTER_COUNT];
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} MonoThreadHazardPointers;
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typedef void (*MonoHazardousFreeFunc) (gpointer p);
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MONO_API gboolean mono_thread_hazardous_try_free (gpointer p, MonoHazardousFreeFunc free_func);
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MONO_API void mono_thread_hazardous_queue_free (gpointer p, MonoHazardousFreeFunc free_func);
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MONO_API void mono_thread_hazardous_try_free_all (void);
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void mono_thread_hazardous_try_free_some (void);
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MONO_API MonoThreadHazardPointers* mono_hazard_pointer_get (void);
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gpointer mono_get_hazardous_pointer (gpointer volatile *pp, MonoThreadHazardPointers *hp, int hazard_index);
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#define mono_hazard_pointer_set(hp,i,v) \
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do { g_assert ((i) >= 0 && (i) < HAZARD_POINTER_COUNT); \
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(hp)->hazard_pointers [(i)] = (v); \
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mono_memory_write_barrier (); \
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} while (0)
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#define mono_hazard_pointer_get_val(hp,i) \
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((hp)->hazard_pointers [(i)])
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#define mono_hazard_pointer_clear(hp,i) \
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do { g_assert ((i) >= 0 && (i) < HAZARD_POINTER_COUNT); \
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mono_memory_write_barrier (); \
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(hp)->hazard_pointers [(i)] = NULL; \
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} while (0)
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void mono_thread_small_id_free (int id);
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int mono_thread_small_id_alloc (void);
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int mono_hazard_pointer_save_for_signal_handler (void);
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void mono_hazard_pointer_restore_for_signal_handler (int small_id);
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typedef void (*MonoHazardFreeQueueSizeCallback)(size_t size);
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void mono_hazard_pointer_install_free_queue_size_callback (MonoHazardFreeQueueSizeCallback cb);
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void mono_thread_smr_init (void);
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void mono_thread_smr_cleanup (void);
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#endif /*__MONO_HAZARD_POINTER_H__*/
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