/*
* Copyright 2015-2018, Intel Corporation
* Copyright (c) 2016, Microsoft Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* win_mmap.h -- (internal) tracks the regions mapped by mmap
*/
#ifndef WIN_MMAP_H
#define WIN_MMAP_H 1
#include "queue.h"
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#define rounddown(x, y) (((x) / (y)) * (y))
void win_mmap_init(void);
void win_mmap_fini(void);
/* allocation/mmap granularity */
extern unsigned long long Mmap_align;
typedef enum FILE_MAPPING_TRACKER_FLAGS {
FILE_MAPPING_TRACKER_FLAG_DIRECT_MAPPED = 0x0001,
/*
* This should hold the value of all flags ORed for debug purpose.
*/
FILE_MAPPING_TRACKER_FLAGS_MASK =
FILE_MAPPING_TRACKER_FLAG_DIRECT_MAPPED
} FILE_MAPPING_TRACKER_FLAGS;
/*
* this structure tracks the file mappings outstanding per file handle
*/
typedef struct FILE_MAPPING_TRACKER {
SORTEDQ_ENTRY(FILE_MAPPING_TRACKER) ListEntry;
HANDLE FileHandle;
HANDLE FileMappingHandle;
void *BaseAddress;
void *EndAddress;
DWORD Access;
os_off_t Offset;
size_t FileLen;
FILE_MAPPING_TRACKER_FLAGS Flags;
} FILE_MAPPING_TRACKER, *PFILE_MAPPING_TRACKER;
extern SRWLOCK FileMappingQLock;
extern SORTEDQ_HEAD(FMLHead, FILE_MAPPING_TRACKER) FileMappingQHead;
#endif /* WIN_MMAP_H */