1 /**************************************************************************/
2 /* */
3 /* OCaml */
4 /* */
5 /* File contributed by Josh Berdine */
6 /* */
7 /* Copyright 2011 Institut National de Recherche en Informatique et */
8 /* en Automatique. */
9 /* */
10 /* All rights reserved. This file is distributed under the terms of */
11 /* the GNU Lesser General Public License version 2.1, with the */
12 /* special exception on linking described in the file LICENSE. */
13 /* */
14 /**************************************************************************/
15
16 #include <caml/mlvalues.h>
17 #include <caml/alloc.h>
18 #include "unixsupport.h"
19 #include <windows.h>
20
21
to_sec(FILETIME ft)22 double to_sec(FILETIME ft) {
23 #if defined(_MSC_VER) && _MSC_VER < 1300
24 /* See gettimeofday.c - it is not possible for these values to be 64-bit, so
25 there's no worry about using a signed struct in order to work around the
26 lack of support for casting int64_t to double.
27 */
28 LARGE_INTEGER tmp;
29 #else
30 ULARGE_INTEGER tmp;
31 #endif
32
33 tmp.u.LowPart = ft.dwLowDateTime;
34 tmp.u.HighPart = ft.dwHighDateTime;
35
36 /* convert to seconds:
37 GetProcessTimes returns number of 100-nanosecond intervals */
38 return tmp.QuadPart / 1e7;
39 }
40
41
unix_times(value unit)42 value unix_times(value unit) {
43 value res;
44 FILETIME creation, exit, stime, utime;
45
46 if (!(GetProcessTimes(GetCurrentProcess(), &creation, &exit, &stime,
47 &utime))) {
48 win32_maperr(GetLastError());
49 uerror("times", Nothing);
50 }
51
52 res = caml_alloc_small(4 * Double_wosize, Double_array_tag);
53 Store_double_field(res, 0, to_sec(utime));
54 Store_double_field(res, 1, to_sec(stime));
55 Store_double_field(res, 2, 0);
56 Store_double_field(res, 3, 0);
57 return res;
58 }
59