mirror of
https://github.com/jerryscript-project/jerryscript.git
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c7dcce4fc7
itself seems a step back, but the primary aim is opening future optimization opportunities. The list of changes follows: - Property is changed to be an abstract type, which has type, flags, and a value. It does not have a name anymore and property pointers cannot be compressed. - Full (32 bit) ecma values can be property values. This allows using non-compressed pointers for ecma values in the future. - The property chain is not restricted to the same item anymore, it can contain hash maps, arrays in the future. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
123 lines
4.1 KiB
C
123 lines
4.1 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 "mem-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_property_pair_t) == sizeof (uint64_t) * 2,
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size_of_ecma_property_pair_t_must_be_equal_to_16_bytes);
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JERRY_STATIC_ASSERT (sizeof (ecma_object_t) <= sizeof (uint64_t),
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size_of_ecma_object_t_must_be_less_than_or_equal_to_8_bytes);
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JERRY_STATIC_ASSERT (sizeof (ecma_collection_header_t) == sizeof (uint64_t),
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size_of_ecma_collection_header_t_must_be_less_than_or_equal_to_8_bytes);
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JERRY_STATIC_ASSERT (sizeof (ecma_collection_chunk_t) == sizeof (uint64_t),
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size_of_ecma_collection_chunk_t_must_be_less_than_or_equal_to_8_bytes);
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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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JERRY_STATIC_ASSERT (sizeof (ecma_getter_setter_pointers_t) <= sizeof (uint64_t),
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size_of_ecma_getter_setter_pointers_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 *p ## ecma_type = (ecma_ ## ecma_type ## _t *) mem_pools_alloc (); \
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\
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JERRY_ASSERT (p ## ecma_type != NULL); \
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\
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return p ## ecma_type; \
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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 *p ## ecma_type) \
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{ \
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mem_pools_free ((uint8_t *) p ## ecma_type); \
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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 ecma-property pair
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*
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* @return pointer to allocated memory
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*/
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ecma_property_pair_t *
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ecma_alloc_property_pair (void)
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{
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return mem_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 from an ecma-property
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*/
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extern void
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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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mem_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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