Line data    Source code

       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : #include "mem_pool.h"
      11              : #include "mmpa_api.h"
      12              : #ifdef __cplusplus
      13              : extern "C" {
      14              : #endif
      15              : 
      16            0 : void InitMemPoolWithCSingleList(MemPool* pool, size_t memSize)
      17              : {
      18            0 :     InitCSingleList(&pool->idleList);
      19            0 :     pool->memSize = memSize;
      20            0 :     pool->updating = 0;
      21            0 :     pool->seq = 0;
      22            0 :     pool->reuseMemFlag = false;
      23            0 : }
      24              : 
      25            0 : void DeInitMemPoolWithCSingleList(MemPool* pool)
      26              : {
      27              :     CSingleListNode* curNode;
      28              :     CSingleListNode* nextNode;
      29            0 :     while (!mmCompareAndSwap64(&pool->updating, 0, 1)) {
      30              :     }
      31            0 :     CSingleListForEach(&pool->idleList, curNode, nextNode)
      32              :     {
      33            0 :         RemoveCSingleListNode(&pool->idleList, curNode);
      34            0 :         MemNode* memNode = GET_MAIN_BY_MEMBER(curNode, MemNode, node);
      35            0 :         mmFree(memNode);
      36              :     }
      37            0 :     mmSetData64(&pool->updating, 0);
      38            0 : }
      39              : 
      40            0 : void* MemPoolAllocWithCSingleList(MemPool* pool)
      41              : {
      42            0 :     MemNode* memNode = NULL;
      43            0 :     while (!mmCompareAndSwap64(&pool->updating, 0, 1)) {
      44              :     }
      45            0 :     if (IsSingleListEmpty(&pool->idleList)) {
      46            0 :         memNode = (MemNode*)mmMalloc(sizeof(MemNode) + pool->memSize);
      47              :     } else {
      48            0 :         memNode = GET_MAIN_BY_MEMBER(GetSingleListHead(&pool->idleList), MemNode, node);
      49            0 :         RemoveCSingleListHead(&pool->idleList);
      50              :     }
      51            0 :     if (memNode != NULL) {
      52            0 :         memNode->flag = MEM_POOL_NODE_USED_FLAG | (((uint64_t)pool->seq) << MEM_POOL_NODE_SEQ_BITNUM);
      53            0 :         pool->seq++;
      54              :     }
      55            0 :     mmSetData64(&pool->updating, 0);
      56            0 :     return (void*)((memNode == NULL) ? NULL : memNode->data);
      57              : }
      58              : 
      59            0 : void MemPoolFreeWithCSingleList(MemPool* pool, void* mem, FnDestroy pfnDestroy)
      60              : {
      61            0 :     if (mem == NULL) {
      62            0 :         return;
      63              :     }
      64              : 
      65            0 :     MemNode* memNode = GET_MAIN_BY_MEMBER(mem, MemNode, data);
      66            0 :     if (memNode == NULL) {
      67            0 :         return;
      68              :     }
      69              : 
      70            0 :     mmAtomicType64 flag = memNode->flag;
      71            0 :     if ((flag & MEM_POOL_NODE_USED_FLAG) != MEM_POOL_NODE_USED_FLAG) {
      72            0 :         return;
      73              :     }
      74            0 :     if (mmCompareAndSwap64(&memNode->flag, flag, MEM_POOL_NODE_IDLE_FLAG)) {
      75            0 :         if (pfnDestroy != NULL) {
      76            0 :             pfnDestroy(mem);
      77              :         }
      78            0 :         while (!mmCompareAndSwap64(&pool->updating, 0, 1)) {
      79              :         }
      80            0 :         if (GetMemPoolReuseFlag(pool)) {
      81            0 :             InsertCSingleListTail(&pool->idleList, &memNode->node);
      82              :         } else {
      83              :             // No insert to IDEL list, free memNode immediately
      84            0 :             mmFree(memNode);
      85            0 :             memNode = NULL;
      86              :         }
      87            0 :         mmSetData64(&pool->updating, 0);
      88              :     }
      89            0 :     return;
      90              : }
      91              : 
      92            0 : bool GetMemPoolReuseFlag(MemPool* pool) { return (pool->reuseMemFlag); }
      93              : 
      94              : #ifdef __cplusplus
      95              : }
      96              : #endif