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/*
* Copyright (C) 2004-2006, Parrot Foundation.
*/
/*
=head1 NAME
config\gen\platform\win32\time.c
=head1 DESCRIPTION
Provides access to system time functions for Win32 platforms.
=head2 Functions
=over 4
=cut
*/
#include <time.h>
/*
=item C<INTVAL Parrot_intval_time(void)>
Returns the current time as an INTVAL
=cut
*/
INTVAL
Parrot_intval_time(void)
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
# ifdef _WIN64
return (INTVAL)_time64(NULL);
# else
return _time32(NULL);
# endif
#else
return time(NULL);
#endif
}
/*
=item C<FLOATVAL Parrot_floatval_time(void)>
Returns the current time as a FLOATVAL.
=cut
*/
FLOATVAL
Parrot_floatval_time(void)
{
SYSTEMTIME sysTime;
/* 100 ns ticks since 1601-01-01 00:00:00 */
FILETIME fileTime;
LARGE_INTEGER i;
GetSystemTime(&sysTime);
SystemTimeToFileTime(&sysTime, &fileTime);
/* Documented as the way to get a 64 bit from a FILETIME. */
memcpy(&i, &fileTime, sizeof (LARGE_INTEGER));
/* FILETIME uses 100ns steps since 1601-01-01 00:00:00 as epoch.
* We'd like 1 second steps since 1970-01-01 00:00:00.
* To get there, divide by 10,000,000 to get from 100ns steps to seconds.
* Then subtract the seconds between 1601 and 1970, i.e. 11,644,473,600.
*/
return (FLOATVAL)i.QuadPart / 10000000.0 - 11644473600.0;
}
/*
=item C<void Parrot_sleep(unsigned int seconds)>
Sleeps for C<seconds> seconds.
=cut
*/
void
Parrot_sleep(unsigned int seconds)
{
Sleep(seconds * 1000);
}
/*
=item C<void Parrot_usleep(unsigned int microseconds)>
Sleep for at least the specified number of microseconds (millionths of a
second).
=cut
*/
void
Parrot_usleep(unsigned int microseconds)
{
Sleep(microseconds / 1000);
}
/*
=item C<struct tm * Parrot_gmtime_r(const time_t *t, struct tm *tm)>
Returns a C<time_t> structure for the current Greenwich Mean Time.
=cut
*/
PARROT_EXPORT
struct tm *
Parrot_gmtime_r(const time_t *t, struct tm *tm)
{
*tm = *gmtime(t);
return tm;
}
/*
=item C<struct tm * Parrot_localtime_r(const time_t *t, struct tm *tm)>
Returns a C<time_t> struct for the current local time.
=cut
*/
PARROT_EXPORT
struct tm *
Parrot_localtime_r(const time_t *t, struct tm *tm)
{
*tm = *localtime(t);
return tm;
}
/*
=item C<char* Parrot_asctime_r(const struct tm *tm, char *buffer)>
Returns an ASCII representation of the C<struct tm>. Puts it in the
character array C<buffer>.
=cut
*/
PARROT_EXPORT
char*
Parrot_asctime_r(const struct tm *tm, char *buffer)
{
static const char wday_name[7][4] =
{ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
static const char mon_name[12][4] =
{ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
sprintf(buffer, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
wday_name[tm->tm_wday],
mon_name[tm->tm_mon],
tm->tm_mday,
tm->tm_hour,
tm->tm_min,
tm->tm_sec,
1900 + tm->tm_year);
return buffer;
}
/*
=back
=cut
*/
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/
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