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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2000-2017. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifndef __ERLFUNTABLE_H__
#define __ERLFUNTABLE_H__
#include "erl_smp.h"
/*
* Fun entry.
*/
typedef struct erl_fun_entry {
HashBucket bucket; /* MUST BE LOCATED AT TOP OF STRUCT!!! */
byte uniq[16]; /* MD5 for module. */
int index; /* New style index. */
int old_uniq; /* Unique number (old_style) */
int old_index; /* Old style index */
BeamInstr* address; /* Pointer to code for fun */
#ifdef HIPE
UWord* native_address; /* Native entry code for fun. */
#endif
Uint arity; /* The arity of the fun. */
Eterm module; /* Tagged atom for module. */
erts_smp_refc_t refc; /* Reference count: One for code + one for each
fun object in each process. */
BeamInstr *pend_purge_address; /* address stored during a pending purge */
} ErlFunEntry;
/*
* This structure represents a 'fun' (lambda). It is stored on
* process heaps. It has variable size depending on the size
* of the environment.
*/
typedef struct erl_fun_thing {
Eterm thing_word; /* Subtag FUN_SUBTAG. */
ErlFunEntry* fe; /* Pointer to fun entry. */
struct erl_off_heap_header* next;
#ifdef HIPE
UWord* native_address; /* Native code for the fun. */
#endif
Uint arity; /* The arity of the fun. */
Uint num_free; /* Number of free variables (in env). */
/* -- The following may be compound Erlang terms ---------------------- */
Eterm creator; /* Pid of creator process (contains node). */
Eterm env[1]; /* Environment (free variables). */
} ErlFunThing;
/* ERL_FUN_SIZE does _not_ include space for the environment */
#define ERL_FUN_SIZE ((sizeof(ErlFunThing)/sizeof(Eterm))-1)
void erts_init_fun_table(void);
void erts_fun_info(fmtfn_t, void *);
int erts_fun_table_sz(void);
ErlFunEntry* erts_put_fun_entry(Eterm mod, int uniq, int index);
ErlFunEntry* erts_get_fun_entry(Eterm mod, int uniq, int index);
ErlFunEntry* erts_put_fun_entry2(Eterm mod, int old_uniq, int old_index,
byte* uniq, int index, int arity);
void erts_erase_fun_entry(ErlFunEntry* fe);
void erts_cleanup_funs(ErlFunThing* funp);
void erts_fun_purge_prepare(BeamInstr* start, BeamInstr* end);
void erts_fun_purge_abort_prepare(ErlFunEntry **funs, Uint no);
void erts_fun_purge_abort_finalize(ErlFunEntry **funs, Uint no);
void erts_fun_purge_complete(ErlFunEntry **funs, Uint no);
void erts_dump_fun_entries(fmtfn_t, void *);
#endif
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