path: root/mono/metadata/class-internals.h

#ifndef __MONO_METADATA_CLASS_INTERBALS_H__
#define __MONO_METADATA_CLASS_INTERBALS_H__

#include <mono/metadata/class.h>
#include <mono/metadata/object.h>
#include <mono/metadata/mempool.h>
#include <mono/io-layer/io-layer.h>
#include "mono/utils/mono-compiler.h"
#include "mono/utils/mono-error.h"

#define MONO_CLASS_IS_ARRAY(c) ((c)->rank)

#define MONO_CLASS_HAS_STATIC_METADATA(klass) ((klass)->type_token && !(klass)->image->dynamic && !(klass)->generic_class)

#define MONO_DEFAULT_SUPERTABLE_SIZE 6

extern gboolean mono_print_vtable;

extern gboolean mono_setup_vtable_in_class_init;

typedef void     (*MonoStackWalkImpl) (MonoStackWalk func, gboolean do_il_offset, gpointer user_data);

typedef struct _MonoMethodNormal MonoMethodNormal;
typedef struct _MonoMethodWrapper MonoMethodWrapper;
typedef struct _MonoMethodInflated MonoMethodInflated;
typedef struct _MonoMethodPInvoke MonoMethodPInvoke;

/* Properties that applies to a group of structs should better use a higher number
 * to avoid colision with type specific properties.
 * 
 * This prop applies to class, method, property, event, assembly and image.
 */
#define MONO_PROP_DYNAMIC_CATTR 0x1000

typedef enum {
#define WRAPPER(e,n) MONO_WRAPPER_ ## e,
#include "wrapper-types.h"
#undef WRAPPER
	MONO_WRAPPER_NUM
} MonoWrapperType;

typedef enum {
	MONO_TYPE_NAME_FORMAT_IL,
	MONO_TYPE_NAME_FORMAT_REFLECTION,
	MONO_TYPE_NAME_FORMAT_FULL_NAME,
	MONO_TYPE_NAME_FORMAT_ASSEMBLY_QUALIFIED
} MonoTypeNameFormat;

typedef enum {
	MONO_REMOTING_TARGET_UNKNOWN,
	MONO_REMOTING_TARGET_APPDOMAIN,
	MONO_REMOTING_TARGET_COMINTEROP
} MonoRemotingTarget;

#define MONO_METHOD_PROP_GENERIC_CONTAINER 0

struct _MonoMethod {
	guint16 flags;  /* method flags */
	guint16 iflags; /* method implementation flags */
	guint32 token;
	MonoClass *klass;
	MonoMethodSignature *signature;
	/* name is useful mostly for debugging */
	const char *name;
	/* this is used by the inlining algorithm */
	unsigned int inline_info:1;
	unsigned int inline_failure:1;
	unsigned int wrapper_type:5;
	unsigned int string_ctor:1;
	unsigned int save_lmf:1;
	unsigned int dynamic:1; /* created & destroyed during runtime */
	unsigned int is_generic:1; /* whenever this is a generic method definition */
	unsigned int is_inflated:1; /* whether we're a MonoMethodInflated */
	unsigned int skip_visibility:1; /* whenever to skip JIT visibility checks */
	unsigned int verification_success:1; /* whether this method has been verified successfully.*/
	/* TODO we MUST get rid of this field, it's an ugly hack nobody is proud of. */
	unsigned int is_mb_open : 1;		/* This is the fully open instantiation of a generic method_builder. Worse than is_tb_open, but it's temporary */
	signed int slot : 17;

	/*
	 * If is_generic is TRUE, the generic_container is stored in image->property_hash, 
	 * using the key MONO_METHOD_PROP_GENERIC_CONTAINER.
	 */
};

struct _MonoMethodNormal {
	MonoMethod method;
	MonoMethodHeader *header;
};

struct _MonoMethodWrapper {
	MonoMethodNormal method;
	void *method_data;
};

struct _MonoMethodPInvoke {
	MonoMethod method;
	gpointer addr;
	/* add marshal info */
	guint16 piflags;  /* pinvoke flags */
	guint16 implmap_idx;  /* index into IMPLMAP */
};

/* 
 * Stores the default value / RVA of fields.
 * This information is rarely needed, so it is stored separately from 
 * MonoClassField.
 */
typedef struct MonoFieldDefaultValue {
	/*
	 * If the field is constant, pointer to the metadata constant
	 * value.
	 * If the field has an RVA flag, pointer to the data.
	 * Else, invalid.
	 */
	const char      *data;

	/* If the field is constant, the type of the constant. */
	MonoTypeEnum     def_type;
} MonoFieldDefaultValue;

/*
 * MonoClassField is just a runtime representation of the metadata for
 * field, it doesn't contain the data directly.  Static fields are
 * stored in MonoVTable->data.  Instance fields are allocated in the
 * objects after the object header.
 */
struct _MonoClassField {
	/* Type of the field */
	MonoType        *type;

	const char      *name;

	/* Type where the field was defined */
	MonoClass       *parent;

	/*
	 * Offset where this field is stored; if it is an instance
	 * field, it's the offset from the start of the object, if
	 * it's static, it's from the start of the memory chunk
	 * allocated for statics for the class.
	 * For special static fields, this is set to -1 during vtable construction.
	 */
	int              offset;
};

/* a field is ignored if it's named "_Deleted" and it has the specialname and rtspecialname flags set */
#define mono_field_is_deleted(field) (((field)->type->attrs & (FIELD_ATTRIBUTE_SPECIAL_NAME | FIELD_ATTRIBUTE_RT_SPECIAL_NAME)) \
				      && (strcmp (mono_field_get_name (field), "_Deleted") == 0))

typedef struct {
	MonoClassField *field;
	guint32 offset;
	MonoMarshalSpec *mspec;
} MonoMarshalField;

typedef struct {
	guint32 native_size, min_align;
	guint32 num_fields;
	MonoMethod *ptr_to_str;
	MonoMethod *str_to_ptr;
	MonoMarshalField fields [MONO_ZERO_LEN_ARRAY];
} MonoMarshalType;

#define MONO_SIZEOF_MARSHAL_TYPE (offsetof (MonoMarshalType, fields))

struct _MonoProperty {
	MonoClass *parent;
	const char *name;
	MonoMethod *get;
	MonoMethod *set;
	guint32 attrs;
};

struct _MonoEvent {
	MonoClass *parent;
	const char *name;
	MonoMethod *add;
	MonoMethod *remove;
	MonoMethod *raise;
	MonoMethod **other;
	guint32 attrs;
};

/* type of exception being "on hold" for later processing (see exception_type) */
enum {
	MONO_EXCEPTION_NONE = 0,
	MONO_EXCEPTION_SECURITY_LINKDEMAND = 1,
	MONO_EXCEPTION_SECURITY_INHERITANCEDEMAND = 2,
	MONO_EXCEPTION_INVALID_PROGRAM = 3,
	MONO_EXCEPTION_UNVERIFIABLE_IL = 4,
	MONO_EXCEPTION_MISSING_METHOD = 5,
	MONO_EXCEPTION_MISSING_FIELD = 6,
	MONO_EXCEPTION_TYPE_LOAD = 7,
	MONO_EXCEPTION_FILE_NOT_FOUND = 8,
	MONO_EXCEPTION_METHOD_ACCESS = 9,
	MONO_EXCEPTION_FIELD_ACCESS = 10,
	MONO_EXCEPTION_GENERIC_SHARING_FAILED = 11,
	MONO_EXCEPTION_BAD_IMAGE = 12,
	MONO_EXCEPTION_OBJECT_SUPPLIED = 13 /*The exception object is already created.*/
	/* add other exception type */
};

/* This struct collects the info needed for the runtime use of a class,
 * like the vtables for a domain, the GC descriptor, etc.
 */
typedef struct {
	guint16 max_domain;
	/* domain_vtables is indexed by the domain id and the size is max_domain + 1 */
	MonoVTable *domain_vtables [MONO_ZERO_LEN_ARRAY];
} MonoClassRuntimeInfo;

#define MONO_SIZEOF_CLASS_RUNTIME_INFO (sizeof (MonoClassRuntimeInfo) - MONO_ZERO_LEN_ARRAY * SIZEOF_VOID_P)

enum {
	MONO_RGCTX_INFO_STATIC_DATA,
	MONO_RGCTX_INFO_KLASS,
	MONO_RGCTX_INFO_VTABLE,
	MONO_RGCTX_INFO_TYPE,
	MONO_RGCTX_INFO_REFLECTION_TYPE,
	MONO_RGCTX_INFO_METHOD,
	MONO_RGCTX_INFO_GENERIC_METHOD_CODE,
	MONO_RGCTX_INFO_CLASS_FIELD,
	MONO_RGCTX_INFO_METHOD_RGCTX,
	MONO_RGCTX_INFO_METHOD_CONTEXT,
	MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK
};

typedef struct _MonoRuntimeGenericContextOtherInfoTemplate {
	int info_type;
	gpointer data;
	struct _MonoRuntimeGenericContextOtherInfoTemplate *next;
} MonoRuntimeGenericContextOtherInfoTemplate;

typedef struct {
	MonoClass *next_subclass;
	MonoRuntimeGenericContextOtherInfoTemplate *other_infos;
	GSList *method_templates;
} MonoRuntimeGenericContextTemplate;

typedef struct {
	MonoVTable *class_vtable; /* must be the first element */
	MonoGenericInst *method_inst;
	gpointer infos [MONO_ZERO_LEN_ARRAY];
} MonoMethodRuntimeGenericContext;

#define MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT (sizeof (MonoMethodRuntimeGenericContext) - MONO_ZERO_LEN_ARRAY * SIZEOF_VOID_P)

#define MONO_RGCTX_SLOT_MAKE_RGCTX(i)	(i)
#define MONO_RGCTX_SLOT_MAKE_MRGCTX(i)	((i) | 0x80000000)
#define MONO_RGCTX_SLOT_INDEX(s)	((s) & 0x7fffffff)
#define MONO_RGCTX_SLOT_IS_MRGCTX(s)	(((s) & 0x80000000) ? TRUE : FALSE)


#define MONO_CLASS_PROP_EXCEPTION_DATA 0

/* 
 * This structure contains the rarely used fields of MonoClass
 * Since using just one field causes the whole structure to be allocated, it should
 * be used for fields which are only used in like 5% of all classes.
 */
typedef struct {
	struct {
		guint32 first, count;
	} property, event;

	/* Initialized by a call to mono_class_setup_properties () */
	MonoProperty *properties;

	/* Initialized by a call to mono_class_setup_events () */
	MonoEvent *events;

	guint32    declsec_flags;	/* declarative security attributes flags */

	/* Default values/RVA for fields */
	/* Accessed using mono_class_get_field_default_value () / mono_field_get_data () */
	MonoFieldDefaultValue *field_def_values;

	GList      *nested_classes;
} MonoClassExt;

struct _MonoClass {
	/* element class for arrays and enum basetype for enums */
	MonoClass *element_class; 
	/* used for subtype checks */
	MonoClass *cast_class; 

	/* for fast subtype checks */
	MonoClass **supertypes;
	guint16     idepth;

	/* array dimension */
	guint8     rank;          

	int        instance_size; /* object instance size */

	guint inited          : 1;
	/* We use init_pending to detect cyclic calls to mono_class_init */
	guint init_pending    : 1;

	/* A class contains static and non static data. Static data can be
	 * of the same type as the class itselfs, but it does not influence
	 * the instance size of the class. To avoid cyclic calls to 
	 * mono_class_init (from mono_class_instance_size ()) we first 
	 * initialise all non static fields. After that we set size_inited 
	 * to 1, because we know the instance size now. After that we 
	 * initialise all static fields.
	 */
	guint size_inited     : 1;
	guint valuetype       : 1; /* derives from System.ValueType */
	guint enumtype        : 1; /* derives from System.Enum */
	guint blittable       : 1; /* class is blittable */
	guint unicode         : 1; /* class uses unicode char when marshalled */
	guint wastypebuilder  : 1; /* class was created at runtime from a TypeBuilder */
	/* next byte */
	guint8 min_align;
	/* next byte */
	guint packing_size    : 4;
	/* still 4 bits free */
	/* next byte */
	guint ghcimpl         : 1; /* class has its own GetHashCode impl */ 
	guint has_finalize    : 1; /* class has its own Finalize impl */ 
	guint marshalbyref    : 1; /* class is a MarshalByRefObject */
	guint contextbound    : 1; /* class is a ContextBoundObject */
	guint delegate        : 1; /* class is a Delegate */
	guint gc_descr_inited : 1; /* gc_descr is initialized */
	guint has_cctor       : 1; /* class has a cctor */
	guint has_references  : 1; /* it has GC-tracked references in the instance */
	/* next byte */
	guint has_static_refs : 1; /* it has static fields that are GC-tracked */
	guint no_special_static_fields : 1; /* has no thread/context static fields */
	/* directly or indirectly derives from ComImport attributed class.
	 * this means we need to create a proxy for instances of this class
	 * for COM Interop. set this flag on loading so all we need is a quick check
	 * during object creation rather than having to traverse supertypes
	 */
	guint is_com_object : 1; 
	guint nested_classes_inited : 1; /* Whenever nested_class is initialized */
	guint interfaces_inited : 1; /* interfaces is initialized */
	guint simd_type : 1; /* class is a simd intrinsic type */
	guint is_generic : 1; /* class is a generic type definition */
	guint is_inflated : 1; /* class is a generic instance */

	guint8     exception_type;	/* MONO_EXCEPTION_* */

	/* Additional information about the exception */
	/* Stored as property MONO_CLASS_PROP_EXCEPTION_DATA */
	//void       *exception_data;

	MonoClass  *parent;
	MonoClass  *nested_in;

	MonoImage *image;
	const char *name;
	const char *name_space;

	guint32    type_token;
	int        vtable_size; /* number of slots */

	guint16     interface_count;
	guint16     interface_id;        /* unique inderface id (for interfaces) */
	guint16     max_interface_id;
	
	guint16     interface_offsets_count;
	MonoClass **interfaces_packed;
	guint16    *interface_offsets_packed;
	guint8     *interface_bitmap;
	
	MonoClass **interfaces;

	union {
		int class_size; /* size of area for static fields */
		int element_size; /* for array types */
		int generic_param_token; /* for generic param types, both var and mvar */
	} sizes;

	/*
	 * From the TypeDef table
	 */
	guint32    flags;
	struct {
		guint32 first, count;
	} field, method;

	/* loaded on demand */
	MonoMarshalType *marshal_info;

	/*
	 * Field information: Type and location from object base
	 */
	MonoClassField *fields;

	MonoMethod **methods;

	/* used as the type of the this argument and when passing the arg by value */
	MonoType this_arg;
	MonoType byval_arg;

	MonoGenericClass *generic_class;
	MonoGenericContainer *generic_container;

	void *reflection_info;

	void *gc_descr;

	MonoClassRuntimeInfo *runtime_info;

	/* next element in the class_cache hash list (in MonoImage) */
	MonoClass *next_class_cache;

	/* Generic vtable. Initialized by a call to mono_class_setup_vtable () */
	MonoMethod **vtable;

	/* Rarely used fields of classes */
	MonoClassExt *ext;
};

#define MONO_CLASS_IMPLEMENTS_INTERFACE(k,uiid) (((uiid) <= (k)->max_interface_id) && ((k)->interface_bitmap [(uiid) >> 3] & (1 << ((uiid)&7))))
int mono_class_interface_offset (MonoClass *klass, MonoClass *itf);

typedef gpointer MonoRuntimeGenericContext;

/* the interface_offsets array is stored in memory before this struct */
struct MonoVTable {
	MonoClass  *klass;
	 /*
	 * According to comments in gc_gcj.h, this should be the second word in
	 * the vtable.
	 */
	void *gc_descr; 	
	MonoDomain *domain;  /* each object/vtable belongs to exactly one domain */
        gpointer    data; /* to store static class data */
        gpointer    type; /* System.Type type for klass */
	guint8     *interface_bitmap;
	guint16     max_interface_id;
	guint8      rank;
	guint remote          : 1; /* class is remotely activated */
	guint initialized     : 1; /* cctor has been run */
	guint init_failed     : 1; /* cctor execution failed */
	guint32     imt_collisions_bitmap;
	MonoRuntimeGenericContext *runtime_generic_context;
	/* do not add any fields after vtable, the structure is dynamically extended */
        gpointer    vtable [MONO_ZERO_LEN_ARRAY];	
};

#define MONO_SIZEOF_VTABLE (sizeof (MonoVTable) - MONO_ZERO_LEN_ARRAY * SIZEOF_VOID_P)

#define MONO_VTABLE_IMPLEMENTS_INTERFACE(vt,uiid) (((uiid) <= (vt)->max_interface_id) && ((vt)->interface_bitmap [(uiid) >> 3] & (1 << ((uiid)&7))))

/*
 * Generic instantiation data type encoding.
 */

/*
 * A particular generic instantiation:
 *
 * All instantiations are cached and we don't distinguish between class and method
 * instantiations here.
 */
struct _MonoGenericInst {
	guint id;			/* unique ID for debugging */
	guint type_argc    : 22;	/* number of type arguments */
	guint is_open      :  1;	/* if this is an open type */
	MonoType *type_argv [MONO_ZERO_LEN_ARRAY];
};

#define MONO_SIZEOF_GENERIC_INST (sizeof (MonoGenericInst) - MONO_ZERO_LEN_ARRAY * SIZEOF_VOID_P)
/*
 * The generic context: an instantiation of a set of class and method generic parameters.
 *
 * NOTE: Never allocate this directly on the heap.  It have to be either allocated on the stack,
 *	 or embedded within other objects.  Don't store pointers to this, because it may be on the stack.
 *	 If you really have to, ensure you store a pointer to the embedding object along with it.
 */
struct _MonoGenericContext {
	/* The instantiation corresponding to the class generic parameters */
	MonoGenericInst *class_inst;
	/* The instantiation corresponding to the method generic parameters */
	MonoGenericInst *method_inst;
};

/*
 * Inflated generic method.
 */
struct _MonoMethodInflated {
	union {
		MonoMethod method;
		MonoMethodNormal normal;
		MonoMethodPInvoke pinvoke;
	} method;
	MonoMethod *declaring;		/* the generic method definition. */
	MonoGenericContext context;	/* The current instantiation */
};

/*
 * A particular instantiation of a generic type.
 */
struct _MonoGenericClass {
	MonoClass *container_class;	/* the generic type definition */
	MonoGenericContext context;	/* a context that contains the type instantiation doesn't contain any method instantiation */
	guint is_dynamic  : 1;		/* We're a MonoDynamicGenericClass */
	guint is_tb_open  : 1;		/* This is the fully open instantiation for a type_builder. Quite ugly, but it's temporary.*/
	MonoClass *cached_class;	/* if present, the MonoClass corresponding to the instantiation.  */
};

/*
 * This is used when instantiating a generic type definition which is
 * a TypeBuilder.
 */
struct _MonoDynamicGenericClass {
	MonoGenericClass generic_class;
	int count_methods;
	MonoMethod **methods;
	int count_ctors;
	MonoMethod **ctors;
	int count_fields;
	MonoClassField *fields;
	int count_properties;
	MonoProperty *properties;
	int count_events;
	MonoEvent *events;
	guint initialized;
	/* The non-inflated types of the fields */
	MonoType **field_generic_types;
	/* The managed objects representing the fields */
	MonoObject **field_objects;
};

/*
 * A type parameter.
 */
struct _MonoGenericParam {
	MonoGenericContainer *owner;	/* Type or method this parameter was defined in. */
	guint16 num;
	/* 
	 * If owner is NULL, or owner is 'owned' by this gparam,
	 * then this is the image whose mempool this struct was allocated from.
	 * The second case happens for gparams created in
	 * mono_reflection_initialize_generic_parameter ().
	 */
	MonoImage *image;
};

/* Additional details about a MonoGenericParam */
typedef struct {
	MonoClass *pklass;		/* The corresponding `MonoClass'. */
	const char *name;
	guint16 flags;
	guint32 token;
	MonoClass** constraints; /* NULL means end of list */
} MonoGenericParamInfo;

typedef struct {
	MonoGenericParam param;
	MonoGenericParamInfo info;
} MonoGenericParamFull;

/*
 * The generic container.
 *
 * Stores the type parameters of a generic type definition or a generic method definition.
 */
struct _MonoGenericContainer {
	MonoGenericContext context;
	/* If we're a generic method definition in a generic type definition,
	   the generic container of the containing class. */
	MonoGenericContainer *parent;
	/* the generic type definition or the generic method definition corresponding to this container */
	union {
		MonoClass *klass;
		MonoMethod *method;
	} owner;
	int type_argc    : 31;
	/* If true, we're a generic method, otherwise a generic type definition. */
	/* Invariant: parent != NULL => is_method */
	int is_method    : 1;
	/* Our type parameters. */
	MonoGenericParamFull *type_params;

	/* 
	 * For owner-less containers created by SRE, the image the container was
	 * allocated from.
	 */
	MonoImage *image;
};

#define mono_generic_container_get_param(gc, i) ((MonoGenericParam *) ((gc)->type_params + (i)))
#define mono_generic_container_get_param_info(gc, i) (&((gc)->type_params + (i))->info)

#define mono_generic_param_owner(p)		((p)->owner)
#define mono_generic_param_num(p)		((p)->num)
#define mono_generic_param_info(p)		(mono_generic_param_owner (p) ? &((MonoGenericParamFull *) p)->info : NULL)
#define mono_type_get_generic_param_owner(t)	(mono_generic_param_owner ((t)->data.generic_param))
#define mono_type_get_generic_param_num(t)	(mono_generic_param_num   ((t)->data.generic_param))

/*
 * Class information which might be cached by the runtime in the AOT file for
 * example. Caching this allows us to avoid computing a generic vtable
 * (class->vtable) in most cases, saving time and avoiding creation of lots of
 * MonoMethod structures.
 */
typedef struct MonoCachedClassInfo {
	guint32 vtable_size;
	guint has_finalize : 1;
	guint ghcimpl : 1;
	guint has_cctor : 1;
	guint has_nested_classes : 1;
	guint blittable : 1;
	guint has_references : 1;
	guint has_static_refs : 1;
	guint no_special_static_fields : 1;
	guint32 cctor_token;
	MonoImage *finalize_image;
	guint32 finalize_token;
	guint32 instance_size;
	guint32 class_size;
	guint32 packing_size;
	guint32 min_align;
} MonoCachedClassInfo;

typedef struct {
	const char *name;
	gconstpointer func;
	gconstpointer wrapper;
	gconstpointer trampoline;
	MonoMethodSignature *sig;
} MonoJitICallInfo;

typedef struct {
	guint8 exception_type;
	char *class_name; /* If kind == TYPE */
	char *assembly_name; /* If kind == TYPE or ASSEMBLY */
	MonoClass *klass; /* If kind != TYPE */
	const char *member_name; /* If kind != TYPE */
	gboolean ref_only; /* If kind == ASSEMBLY */
	char *msg; /* If kind == BAD_IMAGE */
} MonoLoaderError;

#define mono_class_has_parent(klass,parent) (((klass)->idepth >= (parent)->idepth) && ((klass)->supertypes [(parent)->idepth - 1] == (parent)))

typedef struct {
	gulong new_object_count;
	gulong initialized_class_count;
	gulong generic_vtable_count;
	gulong used_class_count;
	gulong method_count;
	gulong class_vtable_size;
	gulong class_static_data_size;
	gulong generic_instance_count;
	gulong generic_class_count;
	gulong inflated_method_count;
	gulong inflated_method_count_2;
	gulong inflated_type_count;
	gulong generics_metadata_size;
	gulong dynamic_code_alloc_count;
	gulong dynamic_code_bytes_count;
	gulong dynamic_code_frees_count;
	gulong delegate_creations;
	gulong imt_tables_size;
	gulong imt_number_of_tables;
	gulong imt_number_of_methods;
	gulong imt_used_slots;
	gulong imt_slots_with_collisions;
	gulong imt_max_collisions_in_slot;
	gulong imt_method_count_when_max_collisions;
	gulong imt_thunks_size;
	gulong jit_info_table_insert_count;
	gulong jit_info_table_remove_count;
	gulong jit_info_table_lookup_count;
	gulong hazardous_pointer_count;
	gulong generics_sharable_methods;
	gulong generics_unsharable_methods;
	gulong generics_shared_methods;
	gulong minor_gc_count;
	gulong major_gc_count;
	gulong minor_gc_time_usecs;
	gulong major_gc_time_usecs;
	gboolean enabled;
} MonoStats;

/* 
 * new structure to hold performace counters values that are exported
 * to managed code.
 * Note: never remove fields from this structure and only add them to the end.
 * Size of fields and type should not be changed as well.
 */
typedef struct {
	/* JIT category */
	guint32 jit_methods;
	guint32 jit_bytes;
	guint32 jit_time;
	guint32 jit_failures;
	/* Exceptions category */
	guint32 exceptions_thrown;
	guint32 exceptions_filters;
	guint32 exceptions_finallys;
	guint32 exceptions_depth;
	guint32 aspnet_requests_queued;
	guint32 aspnet_requests;
	/* Memory category */
	guint32 gc_collections0;
	guint32 gc_collections1;
	guint32 gc_collections2;
	guint32 gc_promotions0;
	guint32 gc_promotions1;
	guint32 gc_promotion_finalizers;
	guint32 gc_gen0size;
	guint32 gc_gen1size;
	guint32 gc_gen2size;
	guint32 gc_lossize;
	guint32 gc_fin_survivors;
	guint32 gc_num_handles;
	guint32 gc_allocated;
	guint32 gc_induced;
	guint32 gc_time;
	guint32 gc_total_bytes;
	guint32 gc_committed_bytes;
	guint32 gc_reserved_bytes;
	guint32 gc_num_pinned;
	guint32 gc_sync_blocks;
	/* Remoting category */
	guint32 remoting_calls;
	guint32 remoting_channels;
	guint32 remoting_proxies;
	guint32 remoting_classes;
	guint32 remoting_objects;
	guint32 remoting_contexts;
	/* Loader category */
	guint32 loader_classes;
	guint32 loader_total_classes;
	guint32 loader_appdomains;
	guint32 loader_total_appdomains;
	guint32 loader_assemblies;
	guint32 loader_total_assemblies;
	guint32 loader_failures;
	guint32 loader_bytes;
	guint32 loader_appdomains_uloaded;
	/* Threads and Locks category  */
	guint32 thread_contentions;
	guint32 thread_queue_len;
	guint32 thread_queue_max;
	guint32 thread_num_logical;
	guint32 thread_num_physical;
	guint32 thread_cur_recognized;
	guint32 thread_num_recognized;
	/* Interop category */
	guint32 interop_num_ccw;
	guint32 interop_num_stubs;
	guint32 interop_num_marshals;
	/* Security category */
	guint32 security_num_checks;
	guint32 security_num_link_checks;
	guint32 security_time;
	guint32 security_depth;
	guint32 unused;
} MonoPerfCounters;

extern MonoPerfCounters *mono_perfcounters MONO_INTERNAL;

void mono_perfcounters_init (void);

/*
 * The definition of the first field in SafeHandle,
 * Keep in sync with SafeHandle.cs, this is only used
 * to access the `handle' parameter.
 */
typedef struct {
	MonoObject  base;
	void       *handle;
} MonoSafeHandle;

/*
 * Keep in sync with HandleRef.cs
 */
typedef struct {
	MonoObject *wrapper;
	void       *handle;
} MonoHandleRef;

enum {
	MONO_GENERIC_SHARING_NONE,
	MONO_GENERIC_SHARING_COLLECTIONS,
	MONO_GENERIC_SHARING_CORLIB,
	MONO_GENERIC_SHARING_ALL
};

/*
 * Flags for which contexts were used in inflating a generic.
 */
enum {
	MONO_GENERIC_CONTEXT_USED_CLASS = 1,
	MONO_GENERIC_CONTEXT_USED_METHOD = 2
};

#define MONO_GENERIC_CONTEXT_USED_BOTH		(MONO_GENERIC_CONTEXT_USED_CLASS | MONO_GENERIC_CONTEXT_USED_METHOD)

extern MonoStats mono_stats MONO_INTERNAL;

typedef gpointer (*MonoTrampoline)       (MonoMethod *method);
typedef gpointer (*MonoJumpTrampoline)       (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper);
typedef gpointer (*MonoRemotingTrampoline)       (MonoDomain *domain, MonoMethod *method, MonoRemotingTarget target);
typedef gpointer (*MonoDelegateTrampoline)       (MonoClass *klass);

typedef gpointer (*MonoLookupDynamicToken) (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context);

typedef gboolean (*MonoGetCachedClassInfo) (MonoClass *klass, MonoCachedClassInfo *res);

typedef gboolean (*MonoGetClassFromName) (MonoImage *image, const char *name_space, const char *name, MonoClass **res);

void
mono_classes_init (void) MONO_INTERNAL;

void
mono_classes_cleanup (void) MONO_INTERNAL;

void
mono_class_layout_fields   (MonoClass *klass) MONO_INTERNAL;

void
mono_class_setup_interface_offsets (MonoClass *klass) MONO_INTERNAL;

void
mono_class_setup_vtable_general (MonoClass *klass, MonoMethod **overrides, int onum) MONO_INTERNAL;

void
mono_class_setup_vtable (MonoClass *klass) MONO_INTERNAL;

void
mono_class_setup_methods (MonoClass *klass) MONO_INTERNAL;

void
mono_class_setup_mono_type (MonoClass *klass) MONO_INTERNAL;

void
mono_class_setup_parent    (MonoClass *klass, MonoClass *parent) MONO_INTERNAL;

void
mono_class_setup_supertypes (MonoClass *klass) MONO_INTERNAL;

MonoMethod*
mono_class_get_method_by_index (MonoClass *class, int index) MONO_INTERNAL;

MonoMethod*
mono_class_get_inflated_method (MonoClass *class, MonoMethod *method) MONO_INTERNAL;

MonoMethod*
mono_class_get_vtable_entry (MonoClass *class, int offset) MONO_INTERNAL;

GPtrArray*
mono_class_get_implemented_interfaces (MonoClass *klass, MonoError *error) MONO_INTERNAL;

int
mono_class_get_vtable_size (MonoClass *klass) MONO_INTERNAL;

gboolean
mono_class_is_open_constructed_type (MonoType *t) MONO_INTERNAL;

gboolean
mono_class_get_overrides_full (MonoImage *image, guint32 type_token, MonoMethod ***overrides, gint32 *num_overrides,
			       MonoGenericContext *generic_context) MONO_INTERNAL;

MonoMethod*
mono_class_get_cctor (MonoClass *klass) MONO_INTERNAL;

MonoMethod*
mono_class_get_finalizer (MonoClass *klass) MONO_INTERNAL;

gboolean
mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller) MONO_INTERNAL;

gboolean
mono_class_field_is_special_static (MonoClassField *field) MONO_INTERNAL;

gboolean
mono_class_has_special_static_fields (MonoClass *klass) MONO_INTERNAL;

const char*
mono_class_get_field_default_value (MonoClassField *field, MonoTypeEnum *def_type) MONO_INTERNAL;

void
mono_install_trampoline (MonoTrampoline func) MONO_INTERNAL;

void
mono_install_jump_trampoline (MonoJumpTrampoline func) MONO_INTERNAL;

void
mono_install_remoting_trampoline (MonoRemotingTrampoline func) MONO_INTERNAL;

void
mono_install_delegate_trampoline (MonoDelegateTrampoline func) MONO_INTERNAL;

gpointer
mono_lookup_dynamic_token (MonoImage *image, guint32 token, MonoGenericContext *context) MONO_INTERNAL;

gpointer
mono_lookup_dynamic_token_class (MonoImage *image, guint32 token, gboolean check_token, MonoClass **handle_class, MonoGenericContext *context) MONO_INTERNAL;

void
mono_install_lookup_dynamic_token (MonoLookupDynamicToken func) MONO_INTERNAL;

gpointer
mono_runtime_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper) MONO_INTERNAL;

gpointer
mono_runtime_create_delegate_trampoline (MonoClass *klass) MONO_INTERNAL;

void
mono_install_get_cached_class_info (MonoGetCachedClassInfo func) MONO_INTERNAL;

void
mono_install_get_class_from_name (MonoGetClassFromName func) MONO_INTERNAL;

MonoGenericContext*
mono_class_get_context (MonoClass *class) MONO_INTERNAL;

MonoGenericContext*
mono_method_get_context_general (MonoMethod *method, gboolean uninflated) MONO_INTERNAL;

MonoGenericContext*
mono_method_get_context (MonoMethod *method) MONO_INTERNAL;

/* Used by monodis, thus cannot be MONO_INTERNAL */
MonoGenericContainer*
mono_method_get_generic_container (MonoMethod *method);

MonoGenericContext*
mono_generic_class_get_context (MonoGenericClass *gclass) MONO_INTERNAL;

MonoClass*
mono_generic_class_get_class (MonoGenericClass *gclass) MONO_INTERNAL;

void
mono_method_set_generic_container (MonoMethod *method, MonoGenericContainer* container) MONO_INTERNAL;

MonoMethod*
mono_class_inflate_generic_method_full (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context) MONO_INTERNAL;

MonoMethod*
mono_class_inflate_generic_method_full_checked (MonoMethod *method, MonoClass *klass_hint, MonoGenericContext *context, MonoError *error) MONO_INTERNAL;

MonoMethodInflated*
mono_method_inflated_lookup (MonoMethodInflated* method, gboolean cache) MONO_INTERNAL;

MonoMethodSignature *
mono_metadata_get_inflated_signature (MonoMethodSignature *sig, MonoGenericContext *context);

MonoType*
mono_class_inflate_generic_type_with_mempool (MonoImage *image, MonoType *type, MonoGenericContext *context, MonoError *error) MONO_INTERNAL;

MonoClass*
mono_class_inflate_generic_class (MonoClass *gklass, MonoGenericContext *context) MONO_INTERNAL;

MonoType*
mono_class_inflate_generic_type_checked (MonoType *type, MonoGenericContext *context, MonoError *error);

void
mono_metadata_free_inflated_signature (MonoMethodSignature *sig);

typedef struct {
	MonoImage *corlib;
	MonoClass *object_class;
	MonoClass *byte_class;
	MonoClass *void_class;
	MonoClass *boolean_class;
	MonoClass *sbyte_class;
	MonoClass *int16_class;
	MonoClass *uint16_class;
	MonoClass *int32_class;
	MonoClass *uint32_class;
	MonoClass *int_class;
	MonoClass *uint_class;
	MonoClass *int64_class;
	MonoClass *uint64_class;
	MonoClass *single_class;
	MonoClass *double_class;
	MonoClass *char_class;
	MonoClass *string_class;
	MonoClass *enum_class;
	MonoClass *array_class;
	MonoClass *delegate_class;
	MonoClass *multicastdelegate_class;
	MonoClass *asyncresult_class;
	MonoClass *manualresetevent_class;
	MonoClass *typehandle_class;
	MonoClass *fieldhandle_class;
	MonoClass *methodhandle_class;
	MonoClass *systemtype_class;
	MonoClass *monotype_class;
	MonoClass *exception_class;
	MonoClass *threadabortexception_class;
	MonoClass *thread_class;
	MonoClass *transparent_proxy_class;
	MonoClass *real_proxy_class;
	MonoClass *mono_method_message_class;
	MonoClass *appdomain_class;
	MonoClass *field_info_class;
	MonoClass *method_info_class;
	MonoClass *stringbuilder_class;
	MonoClass *math_class;
	MonoClass *stack_frame_class;
	MonoClass *stack_trace_class;
	MonoClass *marshal_class;
	MonoClass *iserializeable_class;
	MonoClass *serializationinfo_class;
	MonoClass *streamingcontext_class;
	MonoClass *typed_reference_class;
	MonoClass *argumenthandle_class;
	MonoClass *marshalbyrefobject_class;
	MonoClass *monitor_class;
	MonoClass *iremotingtypeinfo_class;
	MonoClass *runtimesecurityframe_class;
	MonoClass *executioncontext_class;
	MonoClass *internals_visible_class;
	MonoClass *generic_ilist_class;
	MonoClass *generic_nullable_class;
	MonoClass *variant_class;
	MonoClass *com_object_class;
	MonoClass *com_interop_proxy_class;
	MonoClass *iunknown_class;
	MonoClass *idispatch_class;
	MonoClass *safehandle_class;
	MonoClass *handleref_class;
	MonoClass *attribute_class;
	MonoClass *customattribute_data_class;
	MonoClass *critical_finalizer_object;
} MonoDefaults;

extern MonoDefaults mono_defaults MONO_INTERNAL;

void
mono_loader_init           (void) MONO_INTERNAL;

void
mono_loader_cleanup        (void) MONO_INTERNAL;

void
mono_loader_lock           (void) MONO_INTERNAL;

void
mono_loader_unlock         (void) MONO_INTERNAL;

void
mono_loader_lock_track_ownership (gboolean track) MONO_INTERNAL;

gboolean
mono_loader_lock_is_owned_by_self (void) MONO_INTERNAL;

void
mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only) MONO_INTERNAL;

void
mono_loader_set_error_type_load (const char *class_name, const char *assembly_name) MONO_INTERNAL;

void
mono_loader_set_error_method_load (const char *class_name, const char *member_name) MONO_INTERNAL;

void
mono_loader_set_error_field_load (MonoClass *klass, const char *member_name) MONO_INTERNAL;
void
mono_loader_set_error_bad_image (char *msg) MONO_INTERNAL;

MonoException *
mono_loader_error_prepare_exception (MonoLoaderError *error) MONO_INTERNAL;

MonoLoaderError *
mono_loader_get_last_error (void) MONO_INTERNAL;

void
mono_loader_clear_error    (void) MONO_INTERNAL;

void
mono_reflection_init       (void) MONO_INTERNAL;

void
mono_icall_init            (void) MONO_INTERNAL;

void
mono_icall_cleanup         (void) MONO_INTERNAL;

gpointer
mono_method_get_wrapper_data (MonoMethod *method, guint32 id) MONO_INTERNAL;

void
mono_install_stack_walk (MonoStackWalkImpl func) MONO_INTERNAL;

gboolean
mono_metadata_has_generic_params (MonoImage *image, guint32 token) MONO_INTERNAL;

MonoGenericContainer *
mono_metadata_load_generic_params (MonoImage *image, guint32 token,
				   MonoGenericContainer *parent_container);

void
mono_metadata_load_generic_param_constraints (MonoImage *image, guint32 token,
					      MonoGenericContainer *container);

gboolean
mono_metadata_load_generic_param_constraints_full (MonoImage *image, guint32 token,
					      MonoGenericContainer *container) MONO_INTERNAL;

MonoMethodSignature*
mono_create_icall_signature (const char *sigstr) MONO_INTERNAL;

MonoJitICallInfo *
mono_register_jit_icall (gconstpointer func, const char *name, MonoMethodSignature *sig, gboolean is_save) MONO_INTERNAL;

void
mono_register_jit_icall_wrapper (MonoJitICallInfo *info, gconstpointer wrapper) MONO_INTERNAL;

MonoJitICallInfo *
mono_find_jit_icall_by_name (const char *name) MONO_INTERNAL;

MonoJitICallInfo *
mono_find_jit_icall_by_addr (gconstpointer addr) MONO_INTERNAL;

GHashTable*
mono_get_jit_icall_info (void) MONO_INTERNAL;

gboolean
mono_class_set_failure (MonoClass *klass, guint32 ex_type, void *ex_data) MONO_INTERNAL;

gpointer
mono_class_get_exception_data (MonoClass *klass) MONO_INTERNAL;

MonoException*
mono_class_get_exception_for_failure (MonoClass *klass) MONO_INTERNAL;

char*
mono_type_get_name_full (MonoType *type, MonoTypeNameFormat format) MONO_INTERNAL;

char*
mono_type_get_full_name (MonoClass *class) MONO_INTERNAL;

MonoArrayType *mono_dup_array_type (MonoImage *image, MonoArrayType *a) MONO_INTERNAL;
MonoMethodSignature *mono_metadata_signature_deep_dup (MonoImage *image, MonoMethodSignature *sig) MONO_INTERNAL;

void
mono_image_init_name_cache (MonoImage *image);

gboolean mono_class_is_nullable (MonoClass *klass) MONO_INTERNAL;
MonoClass *mono_class_get_nullable_param (MonoClass *klass) MONO_INTERNAL;

/* object debugging functions, for use inside gdb */
void mono_object_describe        (MonoObject *obj);
void mono_object_describe_fields (MonoObject *obj);
void mono_value_describe_fields  (MonoClass* klass, const char* addr);
void mono_class_describe_statics (MonoClass* klass);

/*Enum validation related functions*/
gboolean
mono_type_is_valid_enum_basetype (MonoType * type);

gboolean
mono_class_is_valid_enum (MonoClass *klass);

MonoType *
mono_type_get_full        (MonoImage *image, guint32 type_token, MonoGenericContext *context) MONO_INTERNAL;

gboolean
mono_generic_class_is_generic_type_definition (MonoGenericClass *gklass) MONO_INTERNAL;

MonoMethod*
mono_method_get_declaring_generic_method (MonoMethod *method) MONO_INTERNAL;

MonoMethod*
mono_class_get_method_generic (MonoClass *klass, MonoMethod *method) MONO_INTERNAL;

MonoType*
mono_type_get_basic_type_from_generic (MonoType *type) MONO_INTERNAL;

void
mono_set_generic_sharing_supported (gboolean supported) MONO_INTERNAL;

gboolean
mono_class_generic_sharing_enabled (MonoClass *class) MONO_INTERNAL;

gpointer
mono_class_fill_runtime_generic_context (MonoVTable *class_vtable, guint32 slot) MONO_INTERNAL;

gpointer
mono_method_fill_runtime_generic_context (MonoMethodRuntimeGenericContext *mrgctx, guint32 slot) MONO_INTERNAL;

MonoMethodRuntimeGenericContext*
mono_method_lookup_rgctx (MonoVTable *class_vtable, MonoGenericInst *method_inst) MONO_INTERNAL;

gboolean
mono_method_needs_static_rgctx_invoke (MonoMethod *method, gboolean allow_type_vars) MONO_INTERNAL;

int
mono_class_rgctx_get_array_size (int n, gboolean mrgctx) MONO_INTERNAL;

guint32
mono_method_lookup_or_register_other_info (MonoMethod *method, gboolean in_mrgctx, gpointer data,
	int info_type, MonoGenericContext *generic_context) MONO_INTERNAL;

MonoGenericContext
mono_method_construct_object_context (MonoMethod *method) MONO_INTERNAL;

int
mono_generic_context_check_used (MonoGenericContext *context) MONO_INTERNAL;

int
mono_class_check_context_used (MonoClass *class) MONO_INTERNAL;

gboolean
mono_generic_context_is_sharable (MonoGenericContext *context, gboolean allow_type_vars) MONO_INTERNAL;

gboolean
mono_method_is_generic_impl (MonoMethod *method) MONO_INTERNAL;
gboolean
mono_method_is_generic_sharable_impl (MonoMethod *method, gboolean allow_type_vars) MONO_INTERNAL;

void
mono_class_unregister_image_generic_subclasses (MonoImage *image) MONO_INTERNAL;

gboolean
mono_method_can_access_method_full (MonoMethod *method, MonoMethod *called, MonoClass *context_klass) MONO_INTERNAL;

gboolean
mono_method_can_access_field_full (MonoMethod *method, MonoClassField *field, MonoClass *context_klass) MONO_INTERNAL;

MonoClass *
mono_class_get_generic_type_definition (MonoClass *klass) MONO_INTERNAL;

gboolean
mono_class_has_parent_and_ignore_generics (MonoClass *klass, MonoClass *parent) MONO_INTERNAL;

int
mono_method_get_vtable_slot (MonoMethod *method) MONO_INTERNAL;

int
mono_method_get_vtable_index (MonoMethod *method) MONO_INTERNAL;

MonoMethod*
mono_method_search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig) MONO_INTERNAL;

void
mono_class_setup_interface_id (MonoClass *class) MONO_INTERNAL;

MonoGenericContainer*
mono_class_get_generic_container (MonoClass *klass) MONO_INTERNAL;

MonoGenericClass*
mono_class_get_generic_class (MonoClass *klass) MONO_INTERNAL;

void
mono_class_alloc_ext (MonoClass *klass) MONO_INTERNAL;

void
mono_class_setup_interfaces (MonoClass *klass, MonoError *error) MONO_INTERNAL;

MonoClassField*
mono_class_get_field_from_name_full (MonoClass *klass, const char *name, MonoType *type) MONO_INTERNAL;

MonoVTable*
mono_class_vtable_full (MonoDomain *domain, MonoClass *class, gboolean raise_on_error) MONO_INTERNAL;

gboolean
mono_class_is_assignable_from_slow (MonoClass *target, MonoClass *candidate) MONO_INTERNAL;

#endif /* __MONO_METADATA_CLASS_INTERBALS_H__ */