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52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
//
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// _malloc.h
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// itlwm
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//
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// Created by qcwap on 2020/7/24.
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// Copyright © 2020 钟先耀. All rights reserved.
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//
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/*
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* Copyright (C) 2020 钟先耀
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 _malloc_h
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#define _malloc_h
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#include <IOKit/IOLib.h>
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static inline void*
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malloc(vm_size_t len, int type, int how)
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{
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void* addr = IOMalloc(len + sizeof(vm_size_t));
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if (addr == NULL) {
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return NULL;
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}
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*((vm_size_t*) addr) = len;
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void *buf = (void*)((uint8_t*)addr + sizeof(vm_size_t));
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bzero(buf, len);
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return buf;
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}
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static inline void
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free(void* addr)
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{
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if (addr == NULL) {
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return;
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}
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void* actual_addr = (void*)((uint8_t*)addr - sizeof(vm_size_t));
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vm_size_t len = *((vm_size_t*) actual_addr);
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IOFree(actual_addr, len + sizeof(vm_size_t));
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}
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#endif /* _malloc_h */
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