mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
341 lines
9.3 KiB
C++
341 lines
9.3 KiB
C++
/* Copyright 2015 Samsung Electronics Co., Ltd.
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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 "rcs-chunked-list.h"
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/**
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* Set previous node for the specified node
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*/
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static void
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rcs_chunked_list_set_prev (rcs_chunked_list_node_t *node_p, /**< node to set previous for */
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rcs_chunked_list_node_t *prev_node_p) /**< the previous node */
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{
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JERRY_ASSERT (node_p != NULL);
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MEM_CP_SET_POINTER (node_p->prev_cp, prev_node_p);
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} /* rcs_chunked_list_set_prev */
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/**
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* Set next node for the specified node
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*/
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static void
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rcs_chunked_list_set_next (rcs_chunked_list_node_t *node_p, /**< node to set next for */
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rcs_chunked_list_node_t *next_node_p) /**< the next node */
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{
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JERRY_ASSERT (node_p != NULL);
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MEM_CP_SET_POINTER (node_p->next_cp, next_node_p);
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} /* rcs_chunked_list_set_next */
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/**
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* Get size of the node
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*
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* @return size of node, including header and data space
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*/
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static size_t
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rcs_chunked_list_get_node_size (void)
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{
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size_t size = mem_heap_recommend_allocation_size (sizeof (rcs_chunked_list_node_t) + 1u);
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JERRY_ASSERT (size != 0 && size >= sizeof (rcs_chunked_list_node_t));
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return size;
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} /* rcs_chunked_list_get_node_size */
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/**
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* Assert that the list state is correct
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*/
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static void
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rcs_assert_chunked_list_is_correct (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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#ifndef JERRY_DISABLE_HEAVY_DEBUG
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for (rcs_chunked_list_node_t *node_iter_p = rcs_chunked_list_get_first (cl_p);
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node_iter_p != NULL;
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node_iter_p = rcs_chunked_list_get_next (node_iter_p))
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{
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rcs_chunked_list_node_t *prev_node_p = rcs_chunked_list_get_prev (node_iter_p);
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rcs_chunked_list_node_t *next_node_p = rcs_chunked_list_get_next (node_iter_p);
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JERRY_ASSERT ((node_iter_p == cl_p->head_p
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&& prev_node_p == NULL)
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|| (node_iter_p != cl_p->head_p
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&& prev_node_p != NULL
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&& rcs_chunked_list_get_next (prev_node_p) == node_iter_p));
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JERRY_ASSERT ((node_iter_p == cl_p->tail_p
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&& next_node_p == NULL)
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|| (node_iter_p != cl_p->tail_p
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&& next_node_p != NULL
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&& rcs_chunked_list_get_prev (next_node_p) == node_iter_p));
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}
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#else
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(void) cl_p;
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#endif /* !JERRY_DISABLE_HEAVY_DEBUG */
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} /* rcs_assert_chunked_list_is_correct */
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/**
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* Assert that state of specified node is correct
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*/
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static void
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rcs_assert_chunked_list_node_is_correct (rcs_chunked_list_t *cl_p, /**< the chunked_list */
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rcs_chunked_list_node_t *node_p) /**< the node */
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{
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#ifndef JERRY_DISABLE_HEAVY_DEBUG
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JERRY_ASSERT (node_p != NULL);
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rcs_assert_chunked_list_is_correct (cl_p);
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bool is_in_list = false;
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for (rcs_chunked_list_node_t *node_iter_p = rcs_chunked_list_get_first (cl_p);
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node_iter_p != NULL;
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node_iter_p = rcs_chunked_list_get_next (node_iter_p))
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{
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if (node_iter_p == node_p)
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{
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is_in_list = true;
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break;
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}
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}
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JERRY_ASSERT (is_in_list);
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#else /* !JERRY_DISABLE_HEAVY_DEBUG */
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(void) node_p;
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(void) cl_p;
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#endif /* JERRY_DISABLE_HEAVY_DEBUG */
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} /* rcs_assert_chunked_list_node_is_correct */
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/**
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* Initializarion
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*/
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void
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rcs_chunked_list_init (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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cl_p->head_p = NULL;
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cl_p->tail_p = NULL;
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} /* rcs_chunked_list_init */
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/**
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* Free
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*/
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void
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rcs_chunked_list_free (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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JERRY_ASSERT (cl_p->head_p == NULL);
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JERRY_ASSERT (cl_p->tail_p == NULL);
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} /* rcs_chunked_list_free */
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void
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rcs_chunked_list_cleanup (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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while (cl_p->head_p)
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{
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rcs_chunked_list_remove (cl_p, cl_p->head_p);
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}
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} /* rcs_chunked_list_cleanup */
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/**
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* Get first node of the list
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*
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* @return pointer to the first node
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_get_first (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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return cl_p->head_p;
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} /* rcs_chunked_list_get_first */
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/**
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* Get last node of the list
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*
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* @return pointer to the last node
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_get_last (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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return cl_p->tail_p;
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} /* rcs_chunked_list_get_last */
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/**
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* Get node, previous to specified
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*
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* @return pointer to previous node
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_get_prev (rcs_chunked_list_node_t *node_p) /**< the node in the chunked_list */
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{
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JERRY_ASSERT (node_p != NULL);
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return MEM_CP_GET_POINTER (rcs_chunked_list_node_t, node_p->prev_cp);
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} /* rcs_chunked_list_get_prev */
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/**
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* Get node, next to specified
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*
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* @return pointer to next node
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_get_next (rcs_chunked_list_node_t *node_p) /**< the node in the chunked_list */
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{
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JERRY_ASSERT (node_p != NULL);
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return MEM_CP_GET_POINTER (rcs_chunked_list_node_t, node_p->next_cp);
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} /* rcs_chunked_list_get_next */
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/**
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* Append new node to end of the list
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*
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* @return pointer to the new node
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_append_new (rcs_chunked_list_t *cl_p) /**< the chunked_list */
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{
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rcs_assert_chunked_list_is_correct (cl_p);
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rcs_chunked_list_node_t *node_p =
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(rcs_chunked_list_node_t*) mem_heap_alloc_chunked_block (MEM_HEAP_ALLOC_LONG_TERM);
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rcs_chunked_list_set_prev (node_p, cl_p->tail_p);
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rcs_chunked_list_set_next (node_p, NULL);
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if (cl_p->head_p == NULL)
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{
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JERRY_ASSERT (cl_p->tail_p == NULL);
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cl_p->head_p = node_p;
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cl_p->tail_p = node_p;
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}
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else
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{
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JERRY_ASSERT (cl_p->tail_p != NULL);
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rcs_chunked_list_set_next (cl_p->tail_p, node_p);
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cl_p->tail_p = node_p;
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}
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rcs_assert_chunked_list_node_is_correct (cl_p, node_p);
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return node_p;
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} /* rcs_chunked_list_append_new */
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/**
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* Insert new node after the specified node
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*
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* @return pointer to the new node
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_insert_new (rcs_chunked_list_t *cl_p, /**< the chunked_list */
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rcs_chunked_list_node_t *after_p) /**< the node to insert the new node after */
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{
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rcs_assert_chunked_list_is_correct (cl_p);
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rcs_chunked_list_node_t *node_p =
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(rcs_chunked_list_node_t*) mem_heap_alloc_chunked_block (MEM_HEAP_ALLOC_LONG_TERM);
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JERRY_ASSERT (cl_p->head_p != NULL);
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JERRY_ASSERT (cl_p->tail_p != NULL);
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rcs_assert_chunked_list_node_is_correct (cl_p, after_p);
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rcs_chunked_list_set_next (after_p, node_p);
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if (cl_p->tail_p == after_p)
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{
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cl_p->tail_p = node_p;
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}
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rcs_chunked_list_set_prev (node_p, after_p);
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rcs_chunked_list_set_next (node_p, NULL);
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rcs_assert_chunked_list_node_is_correct (cl_p, node_p);
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return node_p;
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} /* rcs_chunked_list_insert_new */
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/**
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* Remove specified node
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*/
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void
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rcs_chunked_list_remove (rcs_chunked_list_t *cl_p, /**< the chunked_list */
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rcs_chunked_list_node_t *node_p) /**< the node to remove */
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{
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JERRY_ASSERT (cl_p->head_p != NULL);
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JERRY_ASSERT (cl_p->tail_p != NULL);
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rcs_assert_chunked_list_node_is_correct (cl_p, node_p);
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rcs_chunked_list_node_t *prev_node_p, *next_node_p;
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prev_node_p = rcs_chunked_list_get_prev (node_p);
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next_node_p = rcs_chunked_list_get_next (node_p);
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if (prev_node_p == NULL)
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{
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JERRY_ASSERT (cl_p->head_p == node_p);
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cl_p->head_p = next_node_p;
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}
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else
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{
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rcs_chunked_list_set_next (prev_node_p, next_node_p);
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}
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if (next_node_p == NULL)
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{
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JERRY_ASSERT (cl_p->tail_p == node_p);
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cl_p->tail_p = prev_node_p;
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}
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else
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{
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rcs_chunked_list_set_prev (next_node_p, prev_node_p);
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}
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mem_heap_free_block (node_p);
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rcs_assert_chunked_list_is_correct (cl_p);
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} /* rcs_chunked_list_remove */
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/**
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* Find node containing space, pointed by specified pointer
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*
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* @return pointer to the node that contains the pointed area
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*/
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rcs_chunked_list_node_t*
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rcs_chunked_list_get_node_from_pointer (rcs_chunked_list_t *cl_p, /**< the chunked_list */
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void *ptr) /**< the pointer value */
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{
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rcs_chunked_list_node_t *node_p = (rcs_chunked_list_node_t*) mem_heap_get_chunked_block_start (ptr);
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rcs_assert_chunked_list_node_is_correct (cl_p, node_p);
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return node_p;
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} /* rcs_chunked_list_get_node_from_pointer */
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/**
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* Get the node's data space
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*
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* @return pointer to beginning of the node's data space
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*/
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uint8_t *
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rcs_chunked_list_get_node_data_space (rcs_chunked_list_t *cl_p, /**< the chunked_list */
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rcs_chunked_list_node_t *node_p) /**< the node */
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{
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rcs_assert_chunked_list_node_is_correct (cl_p, node_p);
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return (uint8_t *) (node_p + 1);
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} /* rcs_chunked_list_get_node_data_space */
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/**
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* Get size of a node's data space
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*
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* @return size
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*/
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size_t
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rcs_chunked_list_get_node_data_space_size (void)
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{
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return rcs_chunked_list_get_node_size () - sizeof (rcs_chunked_list_node_t);
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} /* rcs_chunked_list_get_node_data_space_size */
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