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/* Copyright (C) 2011 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef INCLUDED_WMMAN
#define INCLUDED_WMMAN
//
// <sys/mman.h>
//
// mmap prot flags
#define PROT_NONE 0x00
#define PROT_READ 0x01
#define PROT_WRITE 0x02
#define PROT_EXEC 0x04
// mmap flags
#define MAP_SHARED 0x01 // writes change the underlying file
#define MAP_PRIVATE 0x02 // writes do not affect the file (copy-on-write)
#define MAP_FIXED 0x04
// .. non-portable
#define MAP_ANONYMOUS 0x10 // backed by the pagefile; fd should be -1
#define MAP_NORESERVE 0x20 // see below
// note: we need a means of only "reserving" virtual address ranges
// for the fixed-address expandable array mechanism. the non-portable
// MAP_NORESERVE flag says that no space in the page file need be reserved.
// the caller can still try to access the entire mapping, but might get
// SIGBUS if there isn't enough room to commit a page. Linux currently
// doesn't commit mmap-ed regions anyway, but we specify this flag to
// make sure of that in the future.
#define MAP_FAILED ((void*)intptr_t(-1))
extern void* mmap(void* start, size_t len, int prot, int flags, int fd, off_t offset);
extern int munmap(void* start, size_t len);
extern int mprotect(void* addr, size_t len, int prot);
// convert POSIX PROT_* flags to their Win32 PAGE_* enumeration equivalents.
LIB_API unsigned MemoryProtectionFromPosix(int prot);
#endif // #ifndef INCLUDED_WMMAN
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