Remove engine_util_container and its test.

PiperOrigin-RevId: 945701044
Change-Id: I6ca3d4fc87cdcd9e3fc14ee49b3aa441a70cd8bd

src/engine/engine_util_container.c

@@ -1,94 +0,0 @@
-// Copyright 2023 DeepMind Technologies Limited
-//
-// 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 "engine/engine_util_container.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <mujoco/mujoco.h>
-#include "engine/engine_crossplatform.h"
-#include "engine/engine_memory.h"
-
-// stack allocate and initialize new mjArrayList
-mjArrayList* mju_arrayListCreate(mjData* d, size_t element_size, size_t initial_capacity) {
-  mjArrayList* array_list = mjSTACKALLOC(d, 1, mjArrayList);
-  initial_capacity = mjMAX(1, initial_capacity);
-  array_list->d = d;
-  array_list->element_size = element_size;
-  array_list->capacity = initial_capacity;
-  array_list->size = 0;
-  array_list->next_segment = NULL;
-
-  // allocate array list buffer
-  array_list->buffer = (void*) mj_stackAllocByte(
-    d, element_size * initial_capacity, _Alignof(mjtMaxAlign));
-  return array_list;
-}
-
-
-// returns total number of elements in mjArrayList
-size_t mju_arrayListSize(const mjArrayList* array_list) {
-  const mjArrayList* cursor = array_list;
-  size_t array_list_size = 0;
-  while (cursor) {
-    array_list_size += cursor->size;
-    cursor = cursor->next_segment;
-  }
-  return array_list_size;
-}
-
-
-// copies one element into an mjArrayList
-void mju_arrayListAdd(mjArrayList* array_list, void* element) {
-  mjArrayList* cursor = array_list;
-
-  // find a non full segment or add a new segment
-  while (cursor->size == cursor->capacity) {
-    if (cursor->next_segment == NULL) {
-      // add a new segment with twice the capacity of the last segment
-      cursor->next_segment = mju_arrayListCreate(
-        cursor->d, cursor->element_size, 2 * cursor->capacity);
-    }
-    cursor = cursor->next_segment;
-  }
-  // copy element into segment
-  memcpy((mjtByte*)cursor->buffer + cursor->element_size * cursor->size,
-         element, cursor->element_size);
-  ++cursor->size;
-}
-
-
-// returns pointer to element at index, NULL if out of bounds
-void* mju_arrayListAt(const mjArrayList* array_list, size_t index) {
-  // if the index is larger than the current capacity, then it is in a later segment
-  const mjArrayList* cursor = array_list;
-  size_t total_capacity = 0;
-  while (cursor != NULL && index >= total_capacity + cursor->capacity) {
-    total_capacity += cursor->capacity;
-    cursor = cursor->next_segment;
-  }
-
-  if (!cursor) {
-    return NULL;
-  }
-
-  if (index - total_capacity >= cursor->size) {
-    return NULL;
-  }
-
-  return (mjtByte*)cursor->buffer + (cursor->element_size * (index - total_capacity));
-}
-

src/engine/engine_util_container.h

@@ -1,66 +0,0 @@
-// Copyright 2023 DeepMind Technologies Limited
-//
-// 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.
-
-#ifndef MUJOCO_SRC_ENGINE_ENGINE_UTIL_CONTAINER_H_
-#define MUJOCO_SRC_ENGINE_ENGINE_UTIL_CONTAINER_H_
-
-#include <stddef.h>
-
-#include <mujoco/mjdata.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-//---------------------------------- mjArrayList ---------------------------------------------------
-struct mjArrayList_ {
-  // pointer to mjData to allow for growth of the list
-  mjData* d;
-
-  // size of element
-  size_t element_size;
-
-  // maximum number of elements
-  size_t capacity;
-
-  // number of elements in this list
-  size_t size;
-
-  // pointer to the next segment of the array list, NULL if last
-  struct mjArrayList_* next_segment;
-
-  // buffer for data in this segment stored in d->arena
-  void* buffer;
-};
-typedef struct mjArrayList_ mjArrayList;
-
-// stack allocate and initialize new mjArrayList
-mjArrayList* mju_arrayListCreate(mjData* d, size_t element_size, size_t initial_capacity);
-
-// returns total number of elements in mjArrayList
-size_t mju_arrayListSize(const mjArrayList* array_list);
-
-// copies an element into an mjArrayList
-void mju_arrayListAdd(mjArrayList* array_list, void* element);
-
-// returns a pointer to the element at the specified location of the arraylist
-// NULL returned if index is not in the mjArrayList
-void* mju_arrayListAt(const mjArrayList* array_list, size_t index);
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif  // MUJOCO_SRC_ENGINE_ENGINE_UTIL_CONTAINER_H_