The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/vmem.h

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    1 /*      $NetBSD: vmem.h,v 1.8 2007/12/13 02:45:10 yamt Exp $    */
    2 
    3 /*-
    4  * Copyright (c)2006 YAMAMOTO Takashi,
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #ifndef _SYS_VMEM_H_
   30 #define _SYS_VMEM_H_
   31 
   32 #include <sys/types.h>
   33 
   34 #if !defined(_KERNEL)
   35 #include <stdbool.h>
   36 #endif /* !defined(_KERNEL) */
   37 
   38 typedef struct vmem vmem_t;
   39 
   40 typedef unsigned int vm_flag_t;
   41 
   42 typedef uintptr_t vmem_addr_t;
   43 typedef size_t vmem_size_t;
   44 #define VMEM_ADDR_NULL  0
   45 
   46 vmem_t *vmem_create(const char *, vmem_addr_t, vmem_size_t, vmem_size_t,
   47     vmem_addr_t (*)(vmem_t *, vmem_size_t, vmem_size_t *, vm_flag_t),
   48     void (*)(vmem_t *, vmem_addr_t, vmem_size_t), vmem_t *, vmem_size_t,
   49     vm_flag_t, int);
   50 void vmem_destroy(vmem_t *);
   51 vmem_addr_t vmem_alloc(vmem_t *, vmem_size_t, vm_flag_t);
   52 void vmem_free(vmem_t *, vmem_addr_t, vmem_size_t);
   53 vmem_addr_t vmem_xalloc(vmem_t *, vmem_size_t, vmem_size_t, vmem_size_t,
   54     vmem_size_t, vmem_addr_t, vmem_addr_t, vm_flag_t);
   55 void vmem_xfree(vmem_t *, vmem_addr_t, vmem_size_t);
   56 vmem_addr_t vmem_add(vmem_t *, vmem_addr_t, vmem_size_t, vm_flag_t);
   57 vmem_size_t vmem_roundup_size(vmem_t *, vmem_size_t);
   58 bool vmem_reap(vmem_t *);
   59 void vmem_rehash_start(void);
   60 void vmem_whatis(uintptr_t, void (*)(const char *, ...));
   61 
   62 /* vm_flag_t */
   63 #define VM_SLEEP        0x00000001
   64 #define VM_NOSLEEP      0x00000002
   65 #define VM_INSTANTFIT   0x00001000
   66 #define VM_BESTFIT      0x00002000
   67 
   68 #endif /* !_SYS_VMEM_H_ */

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