1/* 2 * Copyright 2006-2007, Axel D��rfler, axeld@pinc-software.de. All rights reserved. 3 * Copyright 2003, Jeff Ward, jeff@r2d2.stcloudstate.edu. All rights reserved. 4 * 5 * Distributed under the terms of the MIT License. 6 */ 7#ifndef _KERNEL_REAL_TIME_CLOCK_H 8#define _KERNEL_REAL_TIME_CLOCK_H 9 10 11#include <KernelExport.h> 12 13#include <time.h> 14 15 16struct kernel_args; 17 18 19#define RTC_EPOCH_BASE_YEAR 1970 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25void set_real_time_clock_usecs(bigtime_t currentTime); 26 27status_t rtc_init(struct kernel_args *args); 28bigtime_t rtc_boot_time(void); 29 // Returns the time at which the system was booted in microseconds since Jan 1, 1970 UTC. 30 31// Both functions use the passed struct tm only partially 32// (no tm_wday, tm_yday, tm_isdst). 33uint32 rtc_tm_to_secs(const struct tm *t); 34void rtc_secs_to_tm(uint32 seconds, struct tm *t); 35 36uint32 get_timezone_offset(void); 37 38bigtime_t _user_system_time(void); 39status_t _user_set_real_time_clock(bigtime_t time); 40status_t _user_set_timezone(int32 timezoneOffset, const char *name, 41 size_t nameLength); 42status_t _user_get_timezone(int32 *_timezoneOffset, char* name, 43 size_t nameLength); 44status_t _user_set_real_time_clock_is_gmt(bool isGMT); 45status_t _user_get_real_time_clock_is_gmt(bool *_isGMT); 46 47#ifdef __cplusplus 48} 49#endif 50 51#endif /* _KERNEL_REAL_TIME_CLOCK_H */ 52