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mdbx-windows: use PrefetchVirtualMemory().

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This commit is contained in:
Leonid Yuriev 2019-08-27 23:27:36 +03:00
parent fd0c92927a
commit 9ddfa4f9c8
3 changed files with 28 additions and 17 deletions
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22
src/lck-windows.c
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@ -667,6 +667,7 @@ MDBX_GetFileInformationByHandleEx mdbx_GetFileInformationByHandleEx;
MDBX_GetVolumeInformationByHandleW mdbx_GetVolumeInformationByHandleW;
MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW;
MDBX_SetFileInformationByHandle mdbx_SetFileInformationByHandle;
MDBX_PrefetchVirtualMemory mdbx_PrefetchVirtualMemory;
MDBX_NtFsControlFile mdbx_NtFsControlFile;
static void mdbx_winnt_import(void) {
@ -691,21 +692,14 @@ static void mdbx_winnt_import(void) {
mdbx_srwlock_ReleaseExclusive = stub_srwlock_ReleaseExclusive;
}
mdbx_GetFileInformationByHandleEx =
(MDBX_GetFileInformationByHandleEx)GetProcAddress(
hKernel32dll, "GetFileInformationByHandleEx");
#define GET_KERNEL32_PROC(ENTRY) \
mdbx_##ENTRY = (MDBX_##ENTRY)GetProcAddress(hKernel32dll, #ENTRY)
mdbx_GetVolumeInformationByHandleW =
(MDBX_GetVolumeInformationByHandleW)GetProcAddress(
hKernel32dll, "GetVolumeInformationByHandleW");
mdbx_GetFinalPathNameByHandleW =
(MDBX_GetFinalPathNameByHandleW)GetProcAddress(
hKernel32dll, "GetFinalPathNameByHandleW");
mdbx_SetFileInformationByHandle =
(MDBX_SetFileInformationByHandle)GetProcAddress(
hKernel32dll, "SetFileInformationByHandle");
GET_KERNEL32_PROC(GetFileInformationByHandleEx);
GET_KERNEL32_PROC(GetVolumeInformationByHandleW);
GET_KERNEL32_PROC(GetFinalPathNameByHandleW);
GET_KERNEL32_PROC(SetFileInformationByHandle);
GET_KERNEL32_PROC(PrefetchVirtualMemory);
const HINSTANCE hNtdll = GetModuleHandleA("ntdll.dll");
mdbx_NtFsControlFile =

8
src/mdbx.c
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@ -5819,6 +5819,14 @@ static int __cold mdbx_env_map(MDBX_env *env, const int is_exclusive,
if (unlikely(rc != 0))
return errno;
#endif
#if defined(_WIN32) || defined(_WIN64)
if (mdbx_PrefetchVirtualMemory) {
WIN32_MEMORY_RANGE_ENTRY hint;
hint.VirtualAddress = env->me_map;
hint.NumberOfBytes = usedsize;
(void)mdbx_PrefetchVirtualMemory(GetCurrentProcess(), 1, &hint, 0);
}
#endif /* Windows */
}
#ifdef USE_VALGRIND

15
src/osal.h
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@ -732,7 +732,6 @@ typedef BOOL(WINAPI *MDBX_GetVolumeInformationByHandleW)(
_Out_opt_ LPDWORD lpMaximumComponentLength,
_Out_opt_ LPDWORD lpFileSystemFlags,
_Out_opt_ LPWSTR lpFileSystemNameBuffer, _In_ DWORD nFileSystemNameSize);
extern MDBX_GetVolumeInformationByHandleW mdbx_GetVolumeInformationByHandleW;
typedef DWORD(WINAPI *MDBX_GetFinalPathNameByHandleW)(_In_ HANDLE hFile,
@ -744,7 +743,6 @@ extern MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW;
typedef BOOL(WINAPI *MDBX_SetFileInformationByHandle)(
_In_ HANDLE hFile, _In_ FILE_INFO_BY_HANDLE_CLASS FileInformationClass,
_Out_ LPVOID lpFileInformation, _In_ DWORD dwBufferSize);
extern MDBX_SetFileInformationByHandle mdbx_SetFileInformationByHandle;
typedef NTSTATUS(NTAPI *MDBX_NtFsControlFile)(
@ -753,9 +751,20 @@ typedef NTSTATUS(NTAPI *MDBX_NtFsControlFile)(
OUT PIO_STATUS_BLOCK IoStatusBlock, IN ULONG FsControlCode,
IN OUT PVOID InputBuffer, IN ULONG InputBufferLength,
OUT OPTIONAL PVOID OutputBuffer, IN ULONG OutputBufferLength);
extern MDBX_NtFsControlFile mdbx_NtFsControlFile;
#ifndef _WIN32_WINNT_WIN8
typedef struct _WIN32_MEMORY_RANGE_ENTRY {
PVOID VirtualAddress;
SIZE_T NumberOfBytes;
} WIN32_MEMORY_RANGE_ENTRY, *PWIN32_MEMORY_RANGE_ENTRY;
#endif
typedef BOOL(WINAPI *MDBX_PrefetchVirtualMemory)(
HANDLE hProcess, ULONG_PTR NumberOfEntries,
PWIN32_MEMORY_RANGE_ENTRY VirtualAddresses, ULONG Flags);
extern MDBX_PrefetchVirtualMemory mdbx_PrefetchVirtualMemory;
#endif /* Windows */
/*----------------------------------------------------------------------------*/