kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-05-18 13:09:32 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

add inline structure definitions for MEM_EXTENDED_PARAMETER2

Browse source
This commit is contained in:
Duncan Ogilvie 2019-08-12 16:27:17 +02:00
parent a73daf1804
commit 56de13535a
1 changed files with 39 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
src/os.c
View file

@ -85,10 +85,45 @@ static size_t mi_os_good_alloc_size(size_t size, size_t alignment) {
}
#if defined(_WIN32)
// Structures from Windows 10 winnt.h
typedef struct _MEM_ADDRESS_REQUIREMENTS2 {
PVOID LowestStartingAddress;
PVOID HighestEndingAddress;
SIZE_T Alignment;
} MEM_ADDRESS_REQUIREMENTS2, *PMEM_ADDRESS_REQUIREMENTS2;
#define MEM_EXTENDED_PARAMETER_GRAPHICS 0x00000001
typedef enum MEM_EXTENDED_PARAMETER2_TYPE {
MemExtendedParameter2InvalidType = 0,
MemExtendedParameter2AddressRequirements,
MemExtendedParameter2NumaNode,
MemExtendedParameter2PartitionHandle,
MemExtendedParameter2Max,
MemExtendedParameter2UserPhysicalHandle,
MemExtendedParameter2AttributeFlags
} *PMEM_EXTENDED_PARAMETER2_TYPE;
#define MEM_EXTENDED_PARAMETER2_TYPE_BITS 8
typedef struct DECLSPEC_ALIGN(8) MEM_EXTENDED_PARAMETER2 {
struct {
DWORD64 Type : MEM_EXTENDED_PARAMETER2_TYPE_BITS;
DWORD64 Reserved : 64 - MEM_EXTENDED_PARAMETER2_TYPE_BITS;
} DUMMYSTRUCTNAME;
union {
DWORD64 ULong64;
PVOID Pointer;
SIZE_T Size;
HANDLE Handle;
DWORD ULong;
} DUMMYUNIONNAME;
} MEM_EXTENDED_PARAMETER2, *PMEM_EXTENDED_PARAMETER2;
// We use VirtualAlloc2 for aligned allocation, but it is only supported on Windows 10 and Windows Server 2016.
// So, we need to look it up dynamically to run on older systems. (use __stdcall for 32-bit compatibility)
// Same for DiscardVirtualMemory
typedef PVOID(__stdcall *PVirtualAlloc2)(HANDLE, PVOID, SIZE_T, ULONG, ULONG, MEM_EXTENDED_PARAMETER*, ULONG);
typedef PVOID(__stdcall *PVirtualAlloc2)(HANDLE, PVOID, SIZE_T, ULONG, ULONG, MEM_EXTENDED_PARAMETER2*, ULONG);
typedef DWORD(__stdcall *PDiscardVirtualMemory)(PVOID,SIZE_T);
static PVirtualAlloc2 pVirtualAlloc2 = NULL;
static PDiscardVirtualMemory pDiscardVirtualMemory = NULL;
@ -193,10 +228,10 @@ static void* mi_win_virtual_allocx(void* addr, size_t size, size_t try_alignment
#if defined(MEM_EXTENDED_PARAMETER_TYPE_BITS)
if (try_alignment > 0 && (try_alignment % _mi_os_page_size()) == 0 && pVirtualAlloc2 != NULL) {
// on modern Windows try use VirtualAlloc2 for aligned allocation
MEM_ADDRESS_REQUIREMENTS reqs = { 0 };
MEM_ADDRESS_REQUIREMENTS2 reqs = { 0 };
reqs.Alignment = try_alignment;
MEM_EXTENDED_PARAMETER param = { 0 };
param.Type = MemExtendedParameterAddressRequirements;
MEM_EXTENDED_PARAMETER2 param = { 0 };
param.Type = MemExtendedParameter2AddressRequirements;
param.Pointer = &reqs;
return (*pVirtualAlloc2)(addr, NULL, size, flags, PAGE_READWRITE, &param, 1);
}