55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_VNODE_MEM_ALLOCATOR_H_
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#define _TD_VNODE_MEM_ALLOCATOR_H_
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#include "vnodeInt.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct SVnodeMemAllocator SVnodeMemAllocator;
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SVnodeMemAllocator *VMACreate(size_t size /* base size */, size_t ssize /* step size */,
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size_t threshold /* threshold size when full*/);
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void VMADestroy(SVnodeMemAllocator *pvma);
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void VMAReset(SVnodeMemAllocator *pvma);
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void * VMAMalloc(SVnodeMemAllocator *pvma, size_t size);
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void VMAFree(SVnodeMemAllocator *pvma, void *ptr);
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bool VMAIsFull(SVnodeMemAllocator *pvma);
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// ------------------ FOR TEST ONLY ------------------
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typedef struct SVMANode {
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struct SVMANode *prev;
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size_t tsize;
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size_t used;
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char data[];
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} SVMANode;
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struct SVnodeMemAllocator {
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bool full; // if allocator is full
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size_t threshold; // threshold;
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size_t ssize; // step size to allocate
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SVMANode *inuse; // inuse node to allocate
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SVMANode node; // basic node to use
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_VNODE_MEM_ALLOCATOR_H_*/ |