ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-11-06 06:18:56 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx: refine discarding of unused pages (MADV_FREE/MADV_REMOVE/MADV_DONTNEED).

Browse Source 
Change-Id: I657eb7ef9060214d6ed3d75a2deeebc9ff3df5f5
This commit is contained in:
Leonid Yuriev
2019-10-26 23:57:49 +03:00
parent 40f31ea936
commit 9c89e7c739
3 changed files with 109 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/elements/lck-windows.c
View File

@@ -689,12 +689,14 @@ MDBX_srwlock_function mdbx_srwlock_Init, mdbx_srwlock_AcquireShared,
/*----------------------------------------------------------------------------*/
#if 0 /* LY: unused for now */
static DWORD WINAPI stub_DiscardVirtualMemory(PVOID VirtualAddress,
SIZE_T Size) {
return VirtualAlloc(VirtualAddress, Size, MEM_RESET, PAGE_NOACCESS)
? ERROR_SUCCESS
: GetLastError();
}
#endif /* unused for now */
/*----------------------------------------------------------------------------*/
#ifndef MDBX_ALLOY
@@ -702,9 +704,13 @@ MDBX_GetFileInformationByHandleEx mdbx_GetFileInformationByHandleEx;
MDBX_GetVolumeInformationByHandleW mdbx_GetVolumeInformationByHandleW;
MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW;
MDBX_SetFileInformationByHandle mdbx_SetFileInformationByHandle;
MDBX_PrefetchVirtualMemory mdbx_PrefetchVirtualMemory;
MDBX_DiscardVirtualMemory mdbx_DiscardVirtualMemory;
MDBX_NtFsControlFile mdbx_NtFsControlFile;
MDBX_PrefetchVirtualMemory mdbx_PrefetchVirtualMemory;
#if 0 /* LY: unused for now */
MDBX_DiscardVirtualMemory mdbx_DiscardVirtualMemory;
MDBX_OfferVirtualMemory mdbx_OfferVirtualMemory;
MDBX_ReclaimVirtualMemory mdbx_ReclaimVirtualMemory;
#endif /* unused for now */
#endif /* MDBX_ALLOY */
static void mdbx_winnt_import(void) {
@@ -736,9 +742,13 @@ static void mdbx_winnt_import(void) {
GET_KERNEL32_PROC(GetFinalPathNameByHandleW);
GET_KERNEL32_PROC(SetFileInformationByHandle);
GET_KERNEL32_PROC(PrefetchVirtualMemory);
#if 0 /* LY: unused for now */
GET_KERNEL32_PROC(DiscardVirtualMemory);
if (!mdbx_DiscardVirtualMemory)
mdbx_DiscardVirtualMemory = stub_DiscardVirtualMemory;
GET_KERNEL32_PROC(OfferVirtualMemory);
GET_KERNEL32_PROC(ReclaimVirtualMemory);
#endif /* unused for now */
#undef GET_KERNEL32_PROC
const HINSTANCE hNtdll = GetModuleHandleA("ntdll.dll");