1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ATIME_H
18#define ATIME_H
19
20#include "apr_private.h"
21#include "apr_time.h"
22#if APR_HAVE_TIME_H
23#include <time.h>
24#endif
25
26struct atime_t {
27    apr_pool_t *cntxt;
28    apr_time_t currtime;
29    SYSTEMTIME *explodedtime;
30};
31
32
33/* Number of micro-seconds between the beginning of the Windows epoch
34 * (Jan. 1, 1601) and the Unix epoch (Jan. 1, 1970)
35 */
36#define APR_DELTA_EPOCH_IN_USEC   APR_TIME_C(11644473600000000);
37
38
39static APR_INLINE void FileTimeToAprTime(apr_time_t *result, FILETIME *input)
40{
41    /* Convert FILETIME one 64 bit number so we can work with it. */
42    *result = input->dwHighDateTime;
43    *result = (*result) << 32;
44    *result |= input->dwLowDateTime;
45    *result /= 10;    /* Convert from 100 nano-sec periods to micro-seconds. */
46    *result -= APR_DELTA_EPOCH_IN_USEC;  /* Convert from Windows epoch to Unix epoch */
47    return;
48}
49
50
51static APR_INLINE void AprTimeToFileTime(LPFILETIME pft, apr_time_t t)
52{
53    LONGLONG ll;
54    t += APR_DELTA_EPOCH_IN_USEC;
55    ll = t * 10;
56    pft->dwLowDateTime = (DWORD)ll;
57    pft->dwHighDateTime = (DWORD) (ll >> 32);
58    return;
59}
60
61
62#endif  /* ! ATIME_H */
63
64