Introducing chunked lists (list of nodes that exactly fit the heap chunk size).

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

Author: ruben-ayrapetyan

jerry-core/CMakeLists.txt

@@ -93,6 +93,7 @@ project (JerryCore CXX C ASM)
 # Include directories
  set(INCLUDE_CORE
      ${CMAKE_SOURCE_DIR}/jerry-core
+     ${CMAKE_SOURCE_DIR}/jerry-core/rcs
      ${CMAKE_SOURCE_DIR}/jerry-core/mem
      ${CMAKE_SOURCE_DIR}/jerry-core/vm
      ${CMAKE_SOURCE_DIR}/jerry-core/ecma/builtin-objects
@@ -109,6 +110,7 @@ project (JerryCore CXX C ASM)
 # Sources
  # Jerry core
   file(GLOB SOURCE_CORE_API                *.cpp)
+  file(GLOB SOURCE_CORE_RCS                rcs/*.cpp)
   file(GLOB SOURCE_CORE_MEM                mem/*.cpp)
   file(GLOB SOURCE_CORE_VM                 vm/*.cpp)
   file(GLOB SOURCE_CORE_ECMA_BUILTINS      ecma/builtin-objects/*.cpp)
@@ -121,6 +123,7 @@ project (JerryCore CXX C ASM)
   set(SOURCE_CORE
       jerry.cpp
       ${SOURCE_CORE_API}
+      ${SOURCE_CORE_RCS}
       ${SOURCE_CORE_MEM}
       ${SOURCE_CORE_VM}
       ${SOURCE_CORE_ECMA_BUILTINS}

jerry-core/rcs/rcs-chunked-list.cpp

@@ -0,0 +1,334 @@
+/* Copyright 2015 Samsung Electronics Co., Ltd.
+ *
+ * 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.
+ */
+
+#include "rcs-chunked-list.h"
+
+/**
+ * Constructor
+ */
+void
+rcs_chunked_list_t::init (void)
+{
+  head_p = NULL;
+  tail_p = NULL;
+} /* rcs_chunked_list_t::init */
+
+/**
+ * Destructor
+ */
+void
+rcs_chunked_list_t::free (void)
+{
+  JERRY_ASSERT (head_p == NULL);
+  JERRY_ASSERT (tail_p == NULL);
+} /* rcs_chunked_list_t::free */
+
+/**
+ * Get first node of the list
+ *
+ * @return pointer to the first node
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::get_first (void)
+const
+{
+  return head_p;
+} /* rcs_chunked_list_t::get_first */
+
+/**
+ * Get last node of the list
+ *
+ * @return pointer to the last node
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::get_last (void)
+const
+{
+  return tail_p;
+} /* rcs_chunked_list_t::get_last */
+
+/**
+ * Get node, previous to specified
+ *
+ * @return pointer to previous node
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::get_prev (rcs_chunked_list_t::node_t *node_p) /**< node to get previous for */
+const
+{
+  JERRY_ASSERT (node_p != NULL);
+
+  return MEM_CP_GET_POINTER (node_t, node_p->prev_cp);
+} /* rcs_chunked_list_t::get_prev */
+
+/**
+ * Get node, next to specified
+ *
+ * @return pointer to next node
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::get_next (rcs_chunked_list_t::node_t *node_p) /**< node to get next for */
+const
+{
+  JERRY_ASSERT (node_p != NULL);
+
+  return MEM_CP_GET_POINTER (node_t, node_p->next_cp);
+} /* rcs_chunked_list_t::get_next */
+
+/**
+ * Append new node to end of the list
+ *
+ * @return pointer to the new node
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::append_new (void)
+{
+  assert_list_is_correct ();
+
+  node_t *node_p = (node_t*) mem_heap_alloc_chunked_block (MEM_HEAP_ALLOC_LONG_TERM);
+
+  set_prev (node_p, tail_p);
+  set_next (node_p, NULL);
+
+  if (head_p == NULL)
+  {
+    JERRY_ASSERT (tail_p == NULL);
+
+    head_p = node_p;
+    tail_p = node_p;
+  }
+  else
+  {
+    JERRY_ASSERT (tail_p != NULL);
+
+    set_next (tail_p, node_p);
+
+    tail_p = node_p;
+  }
+
+  assert_node_is_correct (node_p);
+
+  return node_p;
+} /* rcs_chunked_list_t::append_new */
+
+/**
+ * Insert new node after the specified node
+ *
+ * @return pointer to the new node
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::insert_new (rcs_chunked_list_t::node_t* after_p) /**< the node to insert the new node after */
+{
+  assert_list_is_correct ();
+
+  node_t *node_p = (node_t*) mem_heap_alloc_chunked_block (MEM_HEAP_ALLOC_LONG_TERM);
+
+  JERRY_ASSERT (head_p != NULL);
+  JERRY_ASSERT (tail_p != NULL);
+  assert_node_is_correct (after_p);
+
+  set_next (after_p, node_p);
+  if (tail_p == after_p)
+  {
+    tail_p = node_p;
+  }
+
+  set_prev (node_p, after_p);
+  set_next (node_p, NULL);
+
+  assert_node_is_correct (node_p);
+
+  return node_p;
+} /* rcs_chunked_list_t::insert_new */
+
+/**
+ * Remove specified node
+ */
+void
+rcs_chunked_list_t::remove (rcs_chunked_list_t::node_t* node_p) /**< node to remove */
+{
+  JERRY_ASSERT (head_p != NULL);
+  JERRY_ASSERT (tail_p != NULL);
+
+  assert_node_is_correct (node_p);
+
+  node_t *prev_node_p, *next_node_p;
+  prev_node_p = get_prev (node_p);
+  next_node_p = get_next (node_p);
+
+  if (prev_node_p == NULL)
+  {
+    JERRY_ASSERT (head_p == node_p);
+    head_p = next_node_p;
+  }
+  else
+  {
+    set_next (prev_node_p, next_node_p);
+  }
+
+  if (next_node_p == NULL)
+  {
+    JERRY_ASSERT (tail_p == node_p);
+    tail_p = prev_node_p;
+  }
+  else
+  {
+    set_prev (next_node_p, prev_node_p);
+  }
+
+  mem_heap_free_block (node_p);
+
+  assert_list_is_correct ();
+} /* rcs_chunked_list_t::remove */
+
+/**
+ * Find node containing space, pointed by specified pointer
+ *
+ * @return pointer to the node that contains the pointed area
+ */
+rcs_chunked_list_t::node_t*
+rcs_chunked_list_t::get_node_from_pointer (void* ptr) /**< the pointer value */
+const
+{
+  node_t *node_p = (node_t*) mem_heap_get_chunked_block_start (ptr);
+
+  assert_node_is_correct (node_p);
+
+  return node_p;
+} /* rcs_chunked_list_t::get_node_from_pointer */
+
+/**
+ * Get the node's data space
+ *
+ * @return pointer to beginning of the node's data space
+ */
+uint8_t*
+rcs_chunked_list_t::get_data_space (rcs_chunked_list_t::node_t* node_p) /**< the node */
+const
+{
+  assert_node_is_correct (node_p);
+
+  return (uint8_t*) (node_p + 1);
+} /* rcs_chunked_list_t::get_data_space */
+
+/**
+ * Get size of a node's data space
+ *
+ * @return size
+ */
+size_t
+rcs_chunked_list_t::get_data_space_size (void)
+{
+  return rcs_chunked_list_t::get_node_size () - sizeof (node_t);
+} /* rcs_chunked_list_t::get_data_space_size */
+
+/**
+ * Set previous node for the specified node
+ */
+void
+rcs_chunked_list_t::set_prev (rcs_chunked_list_t::node_t *node_p, /**< node to set previous for */
+                              rcs_chunked_list_t::node_t *prev_node_p) /**< the previous node */
+{
+  JERRY_ASSERT (node_p != NULL);
+
+  MEM_CP_SET_POINTER (node_p->prev_cp, prev_node_p);
+} /* rcs_chunked_list_t::set_prev */
+
+/**
+ * Set next node for the specified node
+ */
+void
+rcs_chunked_list_t::set_next (rcs_chunked_list_t::node_t *node_p, /**< node to set next for */
+                              rcs_chunked_list_t::node_t *next_node_p) /**< the next node */
+{
+  JERRY_ASSERT (node_p != NULL);
+
+  MEM_CP_SET_POINTER (node_p->next_cp, next_node_p);
+} /* rcs_chunked_list_t::set_next */
+
+/**
+ * Get size of the node
+ *
+ * @return size of node, including header and data space
+ */
+size_t
+rcs_chunked_list_t::get_node_size (void)
+{
+  size_t size = mem_heap_recommend_allocation_size (sizeof (node_t) + 1u);
+
+  JERRY_ASSERT (size != 0 && size >= sizeof (node_t));
+
+  return size;
+} /* rcs_chunked_list_t::get_node_size */
+
+/**
+ * Assert that the list state is correct
+ */
+void
+rcs_chunked_list_t::assert_list_is_correct (void)
+const
+{
+#ifndef JERRY_NDEBUG
+  for (node_t *node_iter_p = get_first ();
+       node_iter_p != NULL;
+       node_iter_p = get_next (node_iter_p))
+  {
+    node_t *prev_node_p = get_prev (node_iter_p);
+    node_t *next_node_p = get_next (node_iter_p);
+
+    JERRY_ASSERT ((node_iter_p == head_p
+                   && prev_node_p == NULL)
+                  || (node_iter_p != head_p
+                      && prev_node_p != NULL
+                      && get_next (prev_node_p) == node_iter_p));
+    JERRY_ASSERT ((node_iter_p == tail_p
+                   && next_node_p == NULL)
+                  || (node_iter_p != tail_p
+                      && next_node_p != NULL
+                      && get_prev (next_node_p) == node_iter_p));
+  }
+#endif /* !JERRY_NDEBUG */
+} /* rcs_chunked_list_t::assert_list_is_correct */
+
+/**
+ * Assert that state of specified node is correct
+ */
+void
+rcs_chunked_list_t::assert_node_is_correct (const rcs_chunked_list_t::node_t* node_p) /**< the node */
+const
+{
+#ifndef JERRY_NDEBUG
+  JERRY_ASSERT (node_p != NULL);
+
+  assert_list_is_correct ();
+
+  bool is_in_list = false;
+  for (node_t *node_iter_p = get_first ();
+       node_iter_p != NULL;
+       node_iter_p = get_next (node_iter_p))
+  {
+    if (node_iter_p == node_p)
+    {
+      is_in_list = true;
+
+      break;
+    }
+  }
+
+  JERRY_ASSERT (is_in_list);
+#else /* JERRY_NDEBUG */
+  (void) node_p;
+#endif /* JERRY_NDEBUG */
+} /* rcs_chunked_list_t::assert_node_is_correct */