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mdbx-windows: use SetFileInformationByHandle() when available.

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Change-Id: I27d9d4271d4328947ad68cdf30af61a31978b4f9
This commit is contained in:
Leonid Yuriev
2018-12-26 19:53:03 +03:00
parent e3ff44d01b
commit 624968b74c
3 changed files with 26 additions and 5 deletions
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20
src/osal.c
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@@ -741,11 +741,21 @@ int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length) {
int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length) {
#if defined(_WIN32) || defined(_WIN64)
LARGE_INTEGER li;
li.QuadPart = length;
return (SetFilePointerEx(fd, li, NULL, FILE_BEGIN) && SetEndOfFile(fd))
? MDBX_SUCCESS
: GetLastError();
if (mdbx_SetFileInformationByHandle) {
FILE_END_OF_FILE_INFO EndOfFileInfo;
EndOfFileInfo.EndOfFile.QuadPart = length;
return mdbx_SetFileInformationByHandle(fd, FileEndOfFileInfo,
&EndOfFileInfo,
sizeof(FILE_END_OF_FILE_INFO))
? MDBX_SUCCESS
: GetLastError();
} else {
LARGE_INTEGER li;
li.QuadPart = length;
return (SetFilePointerEx(fd, li, NULL, FILE_BEGIN) && SetEndOfFile(fd))
? MDBX_SUCCESS
: GetLastError();
}
#else
STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t),
"libmdbx requires 64-bit file I/O on 64-bit systems");