/**
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* \file
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* Mono-agnostic GC interface.
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*
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* Copyright (C) 2015 Xamarin Inc
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*
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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_METADATA_GCINTERNALAGNOSTIC_H__
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#define __MONO_METADATA_GCINTERNALAGNOSTIC_H__
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#include <config.h>
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#include <glib.h>
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#include <stdio.h>
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#include "mono/utils/ward.h"
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#include "mono/utils/mono-compiler.h"
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#include "mono/utils/parse.h"
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#include "mono/utils/memfuncs.h"
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#ifdef HAVE_SGEN_GC
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#include "mono/sgen/sgen-conf.h"
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#endif
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/* h indicates whether to hide or just tag.
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* (-!!h ^ p) is used instead of (h ? ~p : p) to avoid multiple mentions of p.
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*/
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#define MONO_GC_HIDE_POINTER(p,t,h) ((gpointer)(((-(size_t)!!(h) ^ (size_t)(p)) & ~(size_t)3) | ((t) & (size_t)3)))
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#define MONO_GC_REVEAL_POINTER(p,h) ((gpointer)((-(size_t)!!(h) ^ (size_t)(p)) & ~(size_t)3))
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#define MONO_GC_POINTER_TAG(p) ((size_t)(p) & (size_t)3)
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#define MONO_GC_HANDLE_OCCUPIED_MASK (1)
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#define MONO_GC_HANDLE_VALID_MASK (2)
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#define MONO_GC_HANDLE_TAG_MASK (MONO_GC_HANDLE_OCCUPIED_MASK | MONO_GC_HANDLE_VALID_MASK)
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#define MONO_GC_HANDLE_METADATA_POINTER(p,h) (MONO_GC_HIDE_POINTER ((p), MONO_GC_HANDLE_OCCUPIED_MASK, (h)))
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#define MONO_GC_HANDLE_OBJECT_POINTER(p,h) (MONO_GC_HIDE_POINTER ((p), MONO_GC_HANDLE_OCCUPIED_MASK | MONO_GC_HANDLE_VALID_MASK, (h)))
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#define MONO_GC_HANDLE_OCCUPIED(slot) ((size_t)(slot) & MONO_GC_HANDLE_OCCUPIED_MASK)
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#define MONO_GC_HANDLE_VALID(slot) ((size_t)(slot) & MONO_GC_HANDLE_VALID_MASK)
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#define MONO_GC_HANDLE_TAG(slot) ((size_t)(slot) & MONO_GC_HANDLE_TAG_MASK)
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#define MONO_GC_HANDLE_IS_OBJECT_POINTER(slot) (MONO_GC_HANDLE_TAG (slot) == (MONO_GC_HANDLE_OCCUPIED_MASK | MONO_GC_HANDLE_VALID_MASK))
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#define MONO_GC_HANDLE_IS_METADATA_POINTER(slot) (MONO_GC_HANDLE_TAG (slot) == MONO_GC_HANDLE_OCCUPIED_MASK)
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/* These should match System.Runtime.InteropServices.GCHandleType */
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typedef enum {
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HANDLE_TYPE_MIN = 0,
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HANDLE_WEAK = HANDLE_TYPE_MIN,
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HANDLE_WEAK_TRACK,
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HANDLE_NORMAL,
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HANDLE_PINNED,
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HANDLE_WEAK_FIELDS,
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HANDLE_TYPE_MAX
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} GCHandleType;
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#define GC_HANDLE_TYPE_IS_WEAK(x) ((x) <= HANDLE_WEAK_TRACK)
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#define MONO_GC_HANDLE_TYPE_SHIFT (3)
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#define MONO_GC_HANDLE_TYPE_MASK ((1 << MONO_GC_HANDLE_TYPE_SHIFT) - 1)
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#define MONO_GC_HANDLE_TYPE(x) ((GCHandleType)(((x) & MONO_GC_HANDLE_TYPE_MASK) - 1))
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#define MONO_GC_HANDLE_SLOT(x) ((x) >> MONO_GC_HANDLE_TYPE_SHIFT)
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#define MONO_GC_HANDLE_TYPE_IS_WEAK(x) ((x) <= HANDLE_WEAK_TRACK)
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#define MONO_GC_HANDLE(slot, type) (((slot) << MONO_GC_HANDLE_TYPE_SHIFT) | (((type) & MONO_GC_HANDLE_TYPE_MASK) + 1))
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typedef struct {
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gint32 minor_gc_count;
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gint32 major_gc_count;
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gint64 minor_gc_time;
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gint64 major_gc_time;
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gint64 major_gc_time_concurrent;
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} GCStats;
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extern GCStats gc_stats;
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#ifdef HAVE_SGEN_GC
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typedef SgenDescriptor MonoGCDescriptor;
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#define MONO_GC_DESCRIPTOR_NULL SGEN_DESCRIPTOR_NULL
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#else
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typedef void* MonoGCDescriptor;
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#define MONO_GC_DESCRIPTOR_NULL NULL
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#endif
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gboolean mono_gc_parse_environment_string_extract_number (const char *str, size_t *out);
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MonoGCDescriptor mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size)
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MONO_PERMIT (need (sgen_lock_gc));
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MonoGCDescriptor mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size)
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MONO_PERMIT (need (sgen_lock_gc));
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/* simple interface for data structures needed in the runtime */
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MonoGCDescriptor mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
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MONO_PERMIT (need (sgen_lock_gc));
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/* Return a root descriptor for a vector with repeating refs bitmap */
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MonoGCDescriptor mono_gc_make_vector_descr (void);
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/* Return a root descriptor for a root with all refs */
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MonoGCDescriptor mono_gc_make_root_descr_all_refs (int numbits)
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MONO_PERMIT (need (sgen_lock_gc));
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/* Return the bitmap encoded by a descriptor */
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gsize* mono_gc_get_bitmap_for_descr (MonoGCDescriptor descr, int *numbits);
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/*
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These functions must be used when it's possible that either destination is not
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word aligned or size is not a multiple of word size.
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*/
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void mono_gc_bzero_atomic (void *dest, size_t size);
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void mono_gc_bzero_aligned (void *dest, size_t size);
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void mono_gc_memmove_atomic (void *dest, const void *src, size_t size);
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void mono_gc_memmove_aligned (void *dest, const void *src, size_t size);
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FILE *mono_gc_get_logfile (void);
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/* equivalent to options set via MONO_GC_PARAMS */
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void mono_gc_params_set (const char* options);
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char* mono_gc_params_get();
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/* equivalent to options set via MONO_GC_DEBUG */
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void mono_gc_debug_set (const char* options);
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char *mono_gc_debug_get();
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#endif
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