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            0 :         RemoveCSingleListNode(&pool->idleList, curNode);
      33            0 :         MemNode *memNode = GET_MAIN_BY_MEMBER(curNode, MemNode, node);
      34            0 :         mmFree(memNode);
      35              :     }
      36            0 :     mmSetData64(&pool->updating, 0);
      37            0 : }
      38              : 
      39            0 : void* MemPoolAllocWithCSingleList(MemPool *pool)
      40              : {
      41            0 :     MemNode *memNode = NULL;
      42            0 :     while (!mmCompareAndSwap64(&pool->updating, 0, 1)) {
      43              :     }
      44            0 :     if (IsSingleListEmpty(&pool->idleList)) {
      45            0 :         memNode = (MemNode*)mmMalloc(sizeof(MemNode) + pool->memSize);
      46              :     } else {
      47            0 :         memNode = GET_MAIN_BY_MEMBER(GetSingleListHead(&pool->idleList), MemNode, node);
      48            0 :         RemoveCSingleListHead(&pool->idleList);
      49              :     }
      50            0 :     if (memNode != NULL) {
      51            0 :         memNode->flag = MEM_POOL_NODE_USED_FLAG | (((uint64_t)pool->seq) << MEM_POOL_NODE_SEQ_BITNUM);
      52            0 :         pool->seq++;
      53              :     }
      54            0 :     mmSetData64(&pool->updating, 0);
      55            0 :     return (void*)((memNode == NULL) ? NULL : memNode->data);
      56              : }
      57              : 
      58            0 : void MemPoolFreeWithCSingleList(MemPool *pool, void *mem, FnDestroy pfnDestroy)
      59              : {
      60            0 :     if (mem == NULL) {
      61            0 :         return;
      62              :     }
      63              : 
      64            0 :     MemNode *memNode = GET_MAIN_BY_MEMBER(mem, MemNode, data);
      65            0 :     if (memNode == NULL) {
      66            0 :         return;
      67              :     }
      68              : 
      69            0 :     mmAtomicType64 flag = memNode->flag;
      70            0 :     if ((flag & MEM_POOL_NODE_USED_FLAG) != MEM_POOL_NODE_USED_FLAG) {
      71            0 :         return;
      72              :     }
      73            0 :     if (mmCompareAndSwap64(&memNode->flag, flag, MEM_POOL_NODE_IDLE_FLAG)) {
      74            0 :         if (pfnDestroy != NULL) {
      75            0 :             pfnDestroy(mem);
      76              :         }
      77            0 :         while (!mmCompareAndSwap64(&pool->updating, 0, 1)) {
      78              :         }
      79            0 :         if (GetMemPoolReuseFlag(pool)) {
      80            0 :             InsertCSingleListTail(&pool->idleList, &memNode->node);
      81              :         } else {
      82              :             // No insert to IDEL list, free memNode immediately
      83            0 :             mmFree(memNode);
      84            0 :             memNode = NULL;
      85              :         }
      86            0 :         mmSetData64(&pool->updating, 0);
      87              :     }
      88            0 :     return;
      89              : }
      90              : 
      91            0 : bool GetMemPoolReuseFlag(MemPool *pool)
      92              : {
      93            0 :     return (pool->reuseMemFlag);
      94              : }
      95              : 
      96              : #ifdef __cplusplus
      97              : }
      98              : #endif