mirror of
https://github.com/openharmony/tee_tee_tzdriver.git
synced 2026-07-01 06:41:57 -04:00
袁浩
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
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* mem.h
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*
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* memory operation for gp sharedmem.
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*
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* Copyright (C) 2022 Huawei Technologies Co., Ltd.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef MEM_H
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#define MEM_H
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#include <linux/types.h>
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#include "teek_ns_client.h"
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#define PRE_ALLOCATE_SIZE (1024*1024)
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#define MEM_POOL_ELEMENT_SIZE (64*1024)
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#define MEM_POOL_ELEMENT_NR (8)
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#define MEM_POOL_ELEMENT_ORDER (4)
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struct tc_ns_shared_mem *tc_mem_allocate(size_t len);
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void tc_mem_free(struct tc_ns_shared_mem *shared_mem);
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static inline void get_sharemem_struct(struct tc_ns_shared_mem *sharemem)
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{
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if (sharemem != NULL)
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atomic_inc(&sharemem->usage);
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}
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static inline void put_sharemem_struct(struct tc_ns_shared_mem *sharemem)
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{
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if (sharemem != NULL) {
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if (atomic_dec_and_test(&sharemem->usage))
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tc_mem_free(sharemem);
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}
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}
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#endif
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