164 lines
6.0 KiB
C
164 lines
6.0 KiB
C
/**************************************************************************/
|
|
/* */
|
|
/* OCaml */
|
|
/* */
|
|
/* Manuel Serrano and Xavier Leroy, INRIA Rocquencourt */
|
|
/* */
|
|
/* Copyright 2000 Institut National de Recherche en Informatique et */
|
|
/* en Automatique. */
|
|
/* */
|
|
/* All rights reserved. This file is distributed under the terms of */
|
|
/* the GNU Lesser General Public License version 2.1, with the */
|
|
/* special exception on linking described in the file LICENSE. */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
#define CAML_INTERNALS
|
|
|
|
#include <string.h>
|
|
|
|
#include "caml/alloc.h"
|
|
#include "caml/custom.h"
|
|
#include "caml/fail.h"
|
|
#include "caml/gc_ctrl.h"
|
|
#include "caml/memory.h"
|
|
#include "caml/mlvalues.h"
|
|
#include "caml/signals.h"
|
|
|
|
uintnat caml_custom_major_ratio = Custom_major_ratio_def;
|
|
uintnat caml_custom_minor_ratio = Custom_minor_ratio_def;
|
|
uintnat caml_custom_minor_max_bsz = Custom_minor_max_bsz_def;
|
|
|
|
static value alloc_custom_gen (struct custom_operations * ops,
|
|
uintnat bsz,
|
|
mlsize_t mem,
|
|
mlsize_t max_major,
|
|
mlsize_t mem_minor,
|
|
mlsize_t max_minor)
|
|
{
|
|
mlsize_t wosize;
|
|
CAMLparam0();
|
|
CAMLlocal1(result);
|
|
|
|
/* [mem] is the total amount of out-of-heap memory, [mem_minor] is how much
|
|
of it should be counted against [max_minor]. */
|
|
CAMLassert (mem_minor <= mem);
|
|
|
|
wosize = 1 + (bsz + sizeof(value) - 1) / sizeof(value);
|
|
if (wosize <= Max_young_wosize) {
|
|
result = caml_alloc_small(wosize, Custom_tag);
|
|
Custom_ops_val(result) = ops;
|
|
if (ops->finalize != NULL || mem != 0) {
|
|
if (mem > mem_minor) {
|
|
caml_adjust_gc_speed (mem - mem_minor, max_major);
|
|
}
|
|
/* The remaining [mem_minor] will be counted if the block survives a
|
|
minor GC */
|
|
add_to_custom_table (&Caml_state->minor_tables->custom, result,
|
|
mem_minor, max_major);
|
|
/* Keep track of extra resources held by custom block in
|
|
minor heap. */
|
|
if (mem_minor != 0) {
|
|
if (max_minor == 0) max_minor = 1;
|
|
Caml_state->extra_heap_resources_minor +=
|
|
(double) mem_minor / (double) max_minor;
|
|
if (Caml_state->extra_heap_resources_minor > 1.0) {
|
|
caml_request_minor_gc ();
|
|
caml_gc_dispatch ();
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
result = caml_alloc_shr(wosize, Custom_tag);
|
|
Custom_ops_val(result) = ops;
|
|
caml_adjust_gc_speed(mem, max_major);
|
|
result = caml_check_urgent_gc(result);
|
|
}
|
|
CAMLreturn(result);
|
|
}
|
|
|
|
CAMLexport value caml_alloc_custom(struct custom_operations * ops,
|
|
uintnat bsz,
|
|
mlsize_t mem,
|
|
mlsize_t max)
|
|
{
|
|
return alloc_custom_gen (ops, bsz, mem, max, mem, max);
|
|
}
|
|
|
|
CAMLexport value caml_alloc_custom_mem(struct custom_operations * ops,
|
|
uintnat bsz,
|
|
mlsize_t mem)
|
|
{
|
|
mlsize_t mem_minor =
|
|
mem < caml_custom_minor_max_bsz ? mem : caml_custom_minor_max_bsz;
|
|
return alloc_custom_gen (ops, bsz, mem,
|
|
Bsize_wsize (Caml_state->stat_heap_wsz) / 150
|
|
* caml_custom_major_ratio,
|
|
mem_minor,
|
|
Bsize_wsize (Caml_state->minor_heap_wsz) / 100
|
|
* caml_custom_major_ratio);
|
|
}
|
|
|
|
struct custom_operations_list {
|
|
struct custom_operations * ops;
|
|
struct custom_operations_list * next;
|
|
};
|
|
|
|
static struct custom_operations_list * custom_ops_table = NULL;
|
|
|
|
CAMLexport void caml_register_custom_operations(struct custom_operations * ops)
|
|
{
|
|
struct custom_operations_list * l =
|
|
caml_stat_alloc(sizeof(struct custom_operations_list));
|
|
CAMLassert(ops->identifier != NULL);
|
|
CAMLassert(ops->deserialize != NULL);
|
|
l->ops = ops;
|
|
l->next = custom_ops_table;
|
|
custom_ops_table = l;
|
|
}
|
|
|
|
struct custom_operations * caml_find_custom_operations(char * ident)
|
|
{
|
|
struct custom_operations_list * l;
|
|
for (l = custom_ops_table; l != NULL; l = l->next)
|
|
if (strcmp(l->ops->identifier, ident) == 0) return l->ops;
|
|
return NULL;
|
|
}
|
|
|
|
static struct custom_operations_list * custom_ops_final_table = NULL;
|
|
|
|
struct custom_operations * caml_final_custom_operations(final_fun fn)
|
|
{
|
|
struct custom_operations_list * l;
|
|
struct custom_operations * ops;
|
|
for (l = custom_ops_final_table; l != NULL; l = l->next)
|
|
if (l->ops->finalize == fn) return l->ops;
|
|
ops = caml_stat_alloc(sizeof(struct custom_operations));
|
|
ops->identifier = "_final";
|
|
ops->finalize = fn;
|
|
ops->compare = custom_compare_default;
|
|
ops->hash = custom_hash_default;
|
|
ops->serialize = custom_serialize_default;
|
|
ops->deserialize = custom_deserialize_default;
|
|
ops->compare_ext = custom_compare_ext_default;
|
|
ops->fixed_length = custom_fixed_length_default;
|
|
l = caml_stat_alloc(sizeof(struct custom_operations_list));
|
|
l->ops = ops;
|
|
l->next = custom_ops_final_table;
|
|
custom_ops_final_table = l;
|
|
return ops;
|
|
}
|
|
|
|
extern struct custom_operations caml_int32_ops,
|
|
caml_nativeint_ops,
|
|
caml_int64_ops,
|
|
caml_ba_ops;
|
|
|
|
void caml_init_custom_operations(void)
|
|
{
|
|
caml_register_custom_operations(&caml_int32_ops);
|
|
caml_register_custom_operations(&caml_nativeint_ops);
|
|
caml_register_custom_operations(&caml_int64_ops);
|
|
caml_register_custom_operations(&caml_ba_ops);
|
|
}
|