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Cygwin: memory: declare extended memory API

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Windows 10 1803 introduced an extended memory API allowing
to specify memory regions allocations are to be taken off.

In preparation of using this API, define the struct
MEM_EXTENDED_PARAMETER and friends.  Declare and allow to
autoload the functions VirtualAlloc2 and NtMapViewOfSectionEx.

Introduce a wincap flag has_extended_mem_api.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2020-04-07 14:13:50 +02:00
parent ccb3a40dad
commit e18f7f99cc
5 changed files with 69 additions and 0 deletions
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51
winsup/cygwin/winlean.h
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@ -94,4 +94,55 @@ details. */
#define GetWindowsDirectoryW dont_use_GetWindowsDirectory
#define GetWindowsDirectoryA dont_use_GetWindowsDirectory
#ifdef __cplusplus
extern "C" {
#endif
/* Define extended memory API here as long as not available from mingw-w64. */
typedef struct _MEM_ADDRESS_REQUIREMENTS
{
PVOID LowestStartingAddress;
PVOID HighestEndingAddress;
SIZE_T Alignment;
} MEM_ADDRESS_REQUIREMENTS, *PMEM_ADDRESS_REQUIREMENTS;
typedef enum MEM_EXTENDED_PARAMETER_TYPE
{
MemExtendedParameterInvalidType = 0,
MemExtendedParameterAddressRequirements,
MemExtendedParameterNumaNode,
MemExtendedParameterPartitionHandle,
MemExtendedParameterUserPhysicalHandle,
MemExtendedParameterAttributeFlags,
MemExtendedParameterMax
} MEM_EXTENDED_PARAMETER_TYPE, *PMEM_EXTENDED_PARAMETER_TYPE;
#define MEM_EXTENDED_PARAMETER_TYPE_BITS 8
typedef struct DECLSPEC_ALIGN(8) MEM_EXTENDED_PARAMETER
{
struct
{
DWORD64 Type : MEM_EXTENDED_PARAMETER_TYPE_BITS;
DWORD64 Reserved : 64 - MEM_EXTENDED_PARAMETER_TYPE_BITS;
};
union
{
DWORD64 ULong64;
PVOID Pointer;
SIZE_T Size;
HANDLE Handle;
DWORD ULong;
};
} MEM_EXTENDED_PARAMETER, *PMEM_EXTENDED_PARAMETER;
PVOID VirtualAlloc2 (HANDLE, PVOID, SIZE_T, ULONG, ULONG,
PMEM_EXTENDED_PARAMETER, ULONG);
#ifdef __cplusplus
}
#endif
#endif /*_WINLEAN_H*/