haiku/headers/private/kernel/real_time_clock.h
Oliver Tappe dbe1e23aa8 Optimised passing around of timezone a bit
* _kern_[sg]et_timezone() now accepts/passes out the timezone name, too
* adjust Time preflet and clockconfig to pass the timezone name into the kernel
  when calling _kern_set_timezone()
* ajust implementation of tzset() to fetch the timezone name from the kernel
  via _kern_get_timezone() instead of reading 'libroot_timezone_info'
* the Time preflet no longer writes 'libroot_timezone_info'


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38164 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-08-16 22:01:28 +00:00

50 lines
1.2 KiB
C

/*
* Copyright 2006-2007, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
* Copyright 2003, Jeff Ward, jeff@r2d2.stcloudstate.edu. All rights reserved.
*
* Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_REAL_TIME_CLOCK_H
#define _KERNEL_REAL_TIME_CLOCK_H
#include <KernelExport.h>
#include <time.h>
struct kernel_args;
#define RTC_EPOCH_BASE_YEAR 1970
#ifdef __cplusplus
extern "C" {
#endif
status_t rtc_init(struct kernel_args *args);
bigtime_t rtc_boot_time(void);
// Returns the time at which the system was booted in microseconds since Jan 1, 1970 UTC.
// Both functions use the passed struct tm only partially
// (no tm_wday, tm_yday, tm_isdst).
uint32 rtc_tm_to_secs(const struct tm *t);
void rtc_secs_to_tm(uint32 seconds, struct tm *t);
uint32 get_timezone_offset(void);
bigtime_t _user_system_time(void);
status_t _user_set_real_time_clock(uint32 time);
status_t _user_set_timezone(int32 timezoneOffset, const char *name,
size_t nameLength);
status_t _user_get_timezone(int32 *_timezoneOffset, char* name,
size_t nameLength);
status_t _user_set_real_time_clock_is_gmt(bool isGMT);
status_t _user_get_real_time_clock_is_gmt(bool *_isGMT);
#ifdef __cplusplus
}
#endif
#endif /* _KERNEL_REAL_TIME_CLOCK_H */