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