/* * Copyright (c) 2018 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef included_time_range_h #define included_time_range_h #include <vppinfra/format.h> #include <vppinfra/time.h> typedef enum { CLIB_TIMEBASE_DAYLIGHT_NONE = 0, CLIB_TIMEBASE_DAYLIGHT_USA, } clib_timebase_daylight_time_t; typedef struct { /* provides f64 seconds since clib_time_init was called */ clib_time_t clib_time; /* * time in f64 seconds since Thursday 1 Jan 1970 00:00:00 UTC * when clib_time_init was called */ f64 time_zero; f64 timezone_offset; f64 summer_offset; clib_timebase_daylight_time_t daylight_time_type; f64 cached_year_start; f64 cached_year_end; f64 cached_summer_start; f64 cached_summer_end; } clib_timebase_t; typedef struct { u32 year, month, day, hour, minute, second, nanosecond; /* 0 => Thursday */ u32 day_name_index; f64 fractional_seconds; } clib_timebase_component_t; typedef struct { f64 start, end; } clib_timebase_range_t; void clib_timebase_init (clib_timebase_t * tb, i32 timezone_offset_in_hours, clib_timebase_daylight_time_t daylight_type); void clib_timebase_time_to_components (f64 now, clib_timebase_component_t * cp); f64 clib_timebase_components_to_time (clib_timebase_component_t * cp); f64 clib_timebase_find_sunday_midnight (f64 start_time); f64 clib_timebase_offset_from_sunday (u8 * day); f64 clib_timebase_summer_offset (clib_timebase_t * tb, f64 now); unformat_function_t unformat_clib_timebase_range_hms; unformat_function_t unformat_clib_timebase_range_vector; format_function_t format_clib_timebase_time; static inline f64 clib_timebase_summer_offset_fastpath (clib_timebase_t * tb, f64 now) { if (PREDICT_TRUE (now >= tb->cached_year_start && now <= tb->cached_year_end)) { if (now >= tb->cached_summer_start && now <= tb->cached_summer_end) return tb->summer_offset; else return 0.0; } else return clib_timebase_summer_offset (tb, now); } static inline f64 clib_timebase_now (clib_timebase_t * tb) { f64 now; now = tb->time_zero + clib_time_now (&tb->clib_time); now += tb->timezone_offset; now += clib_timebase_summer_offset_fastpath (tb, now); return now; } static inline int clib_timebase_is_leap_year (u32 year) { int rv; if (PREDICT_TRUE ((year % 4) != 0)) return 0; rv = 0; if ((year % 4) == 0) rv = 1; if ((year % 100) == 0) rv = 0; if ((year % 400) == 0) rv = 1; return rv; } #endif /* included_time_range_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */