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https://github.com/jerryscript-project/jerryscript.git
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fd98d649b6
Class and value internal properties are always exists for primitive types (e.g. Boolean, Regex) so they can be stored right after the object. This improve property access (since internal properties are searched by a slow linear algorithm) and reduces memory consumption, since only 8 byte is allocated for these two properties instead of 16 which is the size of a property pair. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
134 lines
4.0 KiB
C
134 lines
4.0 KiB
C
/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
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* Copyright 2016 University of Szeged.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ecma-alloc.h"
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#include "ecma-globals.h"
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#include "ecma-gc.h"
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#include "ecma-lcache.h"
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#include "jrt.h"
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#include "jmem-poolman.h"
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JERRY_STATIC_ASSERT (sizeof (ecma_property_value_t) == sizeof (ecma_value_t),
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size_of_ecma_property_value_t_must_be_equal_to_size_of_ecma_value_t);
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JERRY_STATIC_ASSERT (((sizeof (ecma_property_value_t) - 1) & sizeof (ecma_property_value_t)) == 0,
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size_of_ecma_property_value_t_must_be_power_of_2);
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JERRY_STATIC_ASSERT (sizeof (ecma_string_t) == sizeof (uint64_t),
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size_of_ecma_string_t_must_be_less_than_or_equal_to_8_bytes);
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/** \addtogroup ecma ECMA
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* @{
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*
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* \addtogroup ecmaalloc Routines for allocation/freeing memory for ECMA data types
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* @{
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*/
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/**
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* Implementation of routines for allocation/freeing memory for ECMA data types.
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*
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* All allocation routines from this module have the same structure:
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* 1. Try to allocate memory.
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* 2. If allocation was successful, return pointer to the allocated block.
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* 3. Run garbage collection.
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* 4. Try to allocate memory.
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* 5. If allocation was successful, return pointer to the allocated block;
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* else - shutdown engine.
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*/
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/**
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* Template of an allocation routine.
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*/
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#define ALLOC(ecma_type) ecma_ ## ecma_type ## _t * \
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ecma_alloc_ ## ecma_type (void) \
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{ \
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ecma_ ## ecma_type ## _t *ecma_type ## _p; \
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ecma_type ## _p = (ecma_ ## ecma_type ## _t *) jmem_pools_alloc (sizeof (ecma_ ## ecma_type ## _t)); \
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\
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JERRY_ASSERT (ecma_type ## _p != NULL); \
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\
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return ecma_type ## _p; \
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}
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/**
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* Deallocation routine template
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*/
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#define DEALLOC(ecma_type) void \
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ecma_dealloc_ ## ecma_type (ecma_ ## ecma_type ## _t *ecma_type ## _p) \
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{ \
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jmem_pools_free ((uint8_t *) ecma_type ## _p, sizeof (ecma_ ## ecma_type ## _t)); \
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}
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/**
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* Declaration of alloc/free routine for specified ecma-type.
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*/
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#define DECLARE_ROUTINES_FOR(ecma_type) \
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ALLOC (ecma_type) \
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DEALLOC (ecma_type)
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DECLARE_ROUTINES_FOR (object)
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DECLARE_ROUTINES_FOR (number)
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DECLARE_ROUTINES_FOR (collection_header)
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DECLARE_ROUTINES_FOR (collection_chunk)
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DECLARE_ROUTINES_FOR (string)
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DECLARE_ROUTINES_FOR (getter_setter_pointers)
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DECLARE_ROUTINES_FOR (external_pointer)
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/**
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* Allocate memory for extended object
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*
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* @return pointer to allocated memory
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*/
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inline ecma_extended_object_t * __attr_always_inline___
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ecma_alloc_extended_object (size_t size) /**< size of object */
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{
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return jmem_heap_alloc_block (size);
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} /* ecma_alloc_extended_object */
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/**
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* Dealloc memory of an extended object
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*/
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inline void __attr_always_inline___
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ecma_dealloc_extended_object (ecma_extended_object_t *ext_object_p, /**< property pair to be freed */
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size_t size) /**< size of object */
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{
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jmem_heap_free_block (ext_object_p, size);
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} /* ecma_dealloc_extended_object */
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/**
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* Allocate memory for ecma-property pair
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*
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* @return pointer to allocated memory
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*/
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inline ecma_property_pair_t * __attr_always_inline___
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ecma_alloc_property_pair (void)
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{
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return jmem_heap_alloc_block (sizeof (ecma_property_pair_t));
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} /* ecma_alloc_property_pair */
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/**
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* Dealloc memory of an ecma-property
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*/
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inline void __attr_always_inline___
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ecma_dealloc_property_pair (ecma_property_pair_t *property_pair_p) /**< property pair to be freed */
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{
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jmem_heap_free_block (property_pair_p, sizeof (ecma_property_pair_t));
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} /* ecma_dealloc_property_pair */
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/**
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* @}
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* @}
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*/
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