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Add wal_sync_method=fdatasync for Windows.

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Windows 10 gained support for flushing NTFS files with fdatasync()
semantics.  The main advantage over open_datasync (in Windows API terms
FILE_FLAG_WRITE_THROUGH) is that the latter does not flush SATA drive
caches.  The default setting is not changed, so users have to opt in to
this.

Discussion: https://postgr.es/m/CA%2BhUKGJZJVO%3DiX%2Beb-PXi2_XS9ZRqnn_4URh0NUQOwt6-_51xQ%40mail.gmail.com
This commit is contained in:
Thomas Munro
2022-07-20 13:50:57 +12:00
parent b24b2be119
commit 9430fb407b
10 changed files with 86 additions and 6 deletions
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6
src/port/win32ntdll.c
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@@ -20,6 +20,8 @@
#include "port/win32ntdll.h"
RtlGetLastNtStatus_t pg_RtlGetLastNtStatus;
RtlNtStatusToDosError_t pg_RtlNtStatusToDosError;
NtFlushBuffersFileEx_t pg_NtFlushBuffersFileEx;
typedef struct NtDllRoutine
{
@@ -28,7 +30,9 @@ typedef struct NtDllRoutine
} NtDllRoutine;
static const NtDllRoutine routines[] = {
{"RtlGetLastNtStatus", (pg_funcptr_t *) &pg_RtlGetLastNtStatus}
{"RtlGetLastNtStatus", (pg_funcptr_t *) &pg_RtlGetLastNtStatus},
{"RtlNtStatusToDosError", (pg_funcptr_t *) &pg_RtlNtStatusToDosError},
{"NtFlushBuffersFileEx", (pg_funcptr_t *) &pg_NtFlushBuffersFileEx}
};
static bool initialized;