Changes in / [01e397ac:2568c94] in mainline


Ignore:
Files:
12 added
15 edited

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Unmodified
Added
Removed

  • boot/Makefile.common

    r01e397ac r2568c94  
    195195        $(USPACE_PATH)/app/mkbd/mkbd \
    196196        $(USPACE_PATH)/app/websrv/websrv \
     197        $(USPACE_PATH)/app/date/date \
     198        $(USPACE_PATH)/app/vdemo/vdemo \
     199        $(USPACE_PATH)/app/vlaunch/vlaunch \
     200        $(USPACE_PATH)/app/vterm/vterm \
    197201        $(USPACE_PATH)/app/vdemo/vdemo
    198202

  • boot/arch/amd64/Makefile.inc

    r01e397ac r2568c94  
    4242        char/ps2mouse \
    4343        char/xtkbd \
     44        time/cmos-rtc \
    4445        bus/usb/ehci\
    4546        bus/usb/ohci \

  • uspace/Makefile

    r01e397ac r2568c94  
    7171        app/sysinfo \
    7272        app/mkbd \
     73        app/date \
    7374        app/websrv \
    7475        app/vdemo \
    … …  
    132133        drv/nic/ne2k \
    133134        drv/nic/e1k \
    134         drv/nic/rtl8139
     135        drv/nic/rtl8139 \
    135136
    136137ifeq ($(CONFIG_PCC),y)
    … …  
    161162                drv/bus/isa \
    162163                drv/char/ns8250 \
     164                drv/time/cmos-rtc \
    163165                srv/hw/irc/apic \
    164166                srv/hw/irc/i8259
    … …  
    171173                drv/bus/isa \
    172174                drv/char/ns8250 \
     175                drv/time/cmos-rtc \
    173176                srv/hw/irc/apic \
    174177                srv/hw/irc/i8259

  • uspace/drv/bus/isa/isa.dev

    r01e397ac r2568c94  
    2727        dma 1
    2828        dma 5
     29
     30cmos-rtc:
     31        match 100 isa/cmos-rtc
     32        io_range 70 2

  • uspace/lib/c/Makefile

    r01e397ac r2568c94  
    7171        generic/device/hw_res_parsed.c \
    7272        generic/device/char_dev.c \
     73        generic/device/clock_dev.c \
    7374        generic/device/graph_dev.c \
    7475        generic/device/nic.c \

  • uspace/lib/c/generic/async.c

    r01e397ac r2568c94  
    638638       
    639639        if (usecs) {
    640                 gettimeofday(&conn->wdata.to_event.expires, NULL);
     640                getuptime(&conn->wdata.to_event.expires);
    641641                tv_add(&conn->wdata.to_event.expires, usecs);
    642642        } else
    … …  
    967967{
    968968        struct timeval tv;
    969         gettimeofday(&tv, NULL);
     969        getuptime(&tv);
    970970       
    971971        futex_down(&async_futex);
    … …  
    10241024                       
    10251025                        struct timeval tv;
    1026                         gettimeofday(&tv, NULL);
     1026                        getuptime(&tv);
    10271027                       
    10281028                        if (tv_gteq(&tv, &waiter->to_event.expires)) {
    … …  
    13311331                timeout = 0;
    13321332
    1333         gettimeofday(&msg->wdata.to_event.expires, NULL);
     1333        getuptime(&msg->wdata.to_event.expires);
    13341334        tv_add(&msg->wdata.to_event.expires, timeout);
    13351335       
    … …  
    14131413        msg->wdata.fid = fibril_get_id();
    14141414       
    1415         gettimeofday(&msg->wdata.to_event.expires, NULL);
     1415        getuptime(&msg->wdata.to_event.expires);
    14161416        tv_add(&msg->wdata.to_event.expires, timeout);
    14171417       

  • uspace/lib/c/generic/fibril_synch.c

    r01e397ac r2568c94  
    379379        futex_down(&async_futex);
    380380        if (timeout) {
    381                 gettimeofday(&wdata.to_event.expires, NULL);
     381                getuptime(&wdata.to_event.expires);
    382382                tv_add(&wdata.to_event.expires, timeout);
    383383                async_insert_timeout(&wdata);

  • uspace/lib/c/generic/time.c

    r01e397ac r2568c94  
    11/*
    22 * Copyright (c) 2006 Ondrej Palkovsky
     3 * Copyright (c) 2011 Petr Koupy
     4 * Copyright (c) 2011 Jiri Zarevucky
    35 * All rights reserved.
    46 *
    … …  
    4345#include <ddi.h>
    4446#include <libc.h>
     47#include <stdint.h>
     48#include <stdio.h>
     49#include <ctype.h>
     50#include <assert.h>
    4551#include <unistd.h>
     52#include <loc.h>
     53#include <device/clock_dev.h>
     54#include <malloc.h>
     55
     56#define ASCTIME_BUF_LEN 26
    4657
    4758/** Pointer to kernel shared variables with time */
    … …  
    5263} *ktime = NULL;
    5364
     65/* Helper functions ***********************************************************/
     66
     67#define HOURS_PER_DAY (24)
     68#define MINS_PER_HOUR (60)
     69#define SECS_PER_MIN (60)
     70#define MINS_PER_DAY (MINS_PER_HOUR * HOURS_PER_DAY)
     71#define SECS_PER_HOUR (SECS_PER_MIN * MINS_PER_HOUR)
     72#define SECS_PER_DAY (SECS_PER_HOUR * HOURS_PER_DAY)
     73
     74/**
     75 * Checks whether the year is a leap year.
     76 *
     77 * @param year Year since 1900 (e.g. for 1970, the value is 70).
     78 * @return true if year is a leap year, false otherwise
     79 */
     80static bool _is_leap_year(time_t year)
     81{
     82        year += 1900;
     83
     84        if (year % 400 == 0)
     85                return true;
     86        if (year % 100 == 0)
     87                return false;
     88        if (year % 4 == 0)
     89                return true;
     90        return false;
     91}
     92
     93/**
     94 * Returns how many days there are in the given month of the given year.
     95 * Note that year is only taken into account if month is February.
     96 *
     97 * @param year Year since 1900 (can be negative).
     98 * @param mon Month of the year. 0 for January, 11 for December.
     99 * @return Number of days in the specified month.
     100 */
     101static int _days_in_month(time_t year, time_t mon)
     102{
     103        assert(mon >= 0 && mon <= 11);
     104
     105        static int month_days[] =
     106                { 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
     107
     108        if (mon == 1) {
     109                year += 1900;
     110                /* february */
     111                return _is_leap_year(year) ? 29 : 28;
     112        } else {
     113                return month_days[mon];
     114        }
     115}
     116
     117/**
     118 * For specified year, month and day of month, returns which day of that year
     119 * it is.
     120 *
     121 * For example, given date 2011-01-03, the corresponding expression is:
     122 *     _day_of_year(111, 0, 3) == 2
     123 *
     124 * @param year Year (year 1900 = 0, can be negative).
     125 * @param mon Month (January = 0).
     126 * @param mday Day of month (First day is 1).
     127 * @return Day of year (First day is 0).
     128 */
     129static int _day_of_year(time_t year, time_t mon, time_t mday)
     130{
     131        static int mdays[] =
     132            { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
     133        static int leap_mdays[] =
     134            { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 };
     135
     136        return (_is_leap_year(year) ? leap_mdays[mon] : mdays[mon]) + mday - 1;
     137}
     138
     139/**
     140 * Integer division that rounds to negative infinity.
     141 * Used by some functions in this file.
     142 *
     143 * @param op1 Dividend.
     144 * @param op2 Divisor.
     145 * @return Rounded quotient.
     146 */
     147static time_t _floor_div(time_t op1, time_t op2)
     148{
     149        if (op1 >= 0 || op1 % op2 == 0) {
     150                return op1 / op2;
     151        } else {
     152                return op1 / op2 - 1;
     153        }
     154}
     155
     156/**
     157 * Modulo that rounds to negative infinity.
     158 * Used by some functions in this file.
     159 *
     160 * @param op1 Dividend.
     161 * @param op2 Divisor.
     162 * @return Remainder.
     163 */
     164static time_t _floor_mod(time_t op1, time_t op2)
     165{
     166        int div = _floor_div(op1, op2);
     167
     168        /* (a / b) * b + a % b == a */
     169        /* thus, a % b == a - (a / b) * b */
     170
     171        int result = op1 - div * op2;
     172       
     173        /* Some paranoid checking to ensure I didn't make a mistake here. */
     174        assert(result >= 0);
     175        assert(result < op2);
     176        assert(div * op2 + result == op1);
     177       
     178        return result;
     179}
     180
     181/**
     182 * Number of days since the Epoch.
     183 * Epoch is 1970-01-01, which is also equal to day 0.
     184 *
     185 * @param year Year (year 1900 = 0, may be negative).
     186 * @param mon Month (January = 0).
     187 * @param mday Day of month (first day = 1).
     188 * @return Number of days since the Epoch.
     189 */
     190static time_t _days_since_epoch(time_t year, time_t mon, time_t mday)
     191{
     192        return (year - 70) * 365 + _floor_div(year - 69, 4) -
     193            _floor_div(year - 1, 100) + _floor_div(year + 299, 400) +
     194            _day_of_year(year, mon, mday);
     195}
     196
     197/**
     198 * Seconds since the Epoch. see also _days_since_epoch().
     199 *
     200 * @param tm Normalized broken-down time.
     201 * @return Number of seconds since the epoch, not counting leap seconds.
     202 */
     203static time_t _secs_since_epoch(const struct tm *tm)
     204{
     205        return _days_since_epoch(tm->tm_year, tm->tm_mon, tm->tm_mday) *
     206            SECS_PER_DAY + tm->tm_hour * SECS_PER_HOUR +
     207            tm->tm_min * SECS_PER_MIN + tm->tm_sec;
     208}
     209
     210/**
     211 * Which day of week the specified date is.
     212 *
     213 * @param year Year (year 1900 = 0).
     214 * @param mon Month (January = 0).
     215 * @param mday Day of month (first = 1).
     216 * @return Day of week (Sunday = 0).
     217 */
     218static int _day_of_week(time_t year, time_t mon, time_t mday)
     219{
     220        /* 1970-01-01 is Thursday */
     221        return _floor_mod((_days_since_epoch(year, mon, mday) + 4), 7);
     222}
     223
     224/**
     225 * Normalizes the broken-down time and optionally adds specified amount of
     226 * seconds.
     227 *
     228 * @param tm Broken-down time to normalize.
     229 * @param sec_add Seconds to add.
     230 * @return 0 on success, -1 on overflow
     231 */
     232static int _normalize_time(struct tm *tm, time_t sec_add)
     233{
     234        // TODO: DST correction
     235
     236        /* Set initial values. */
     237        time_t sec = tm->tm_sec + sec_add;
     238        time_t min = tm->tm_min;
     239        time_t hour = tm->tm_hour;
     240        time_t day = tm->tm_mday - 1;
     241        time_t mon = tm->tm_mon;
     242        time_t year = tm->tm_year;
     243
     244        /* Adjust time. */
     245        min += _floor_div(sec, SECS_PER_MIN);
     246        sec = _floor_mod(sec, SECS_PER_MIN);
     247        hour += _floor_div(min, MINS_PER_HOUR);
     248        min = _floor_mod(min, MINS_PER_HOUR);
     249        day += _floor_div(hour, HOURS_PER_DAY);
     250        hour = _floor_mod(hour, HOURS_PER_DAY);
     251
     252        /* Adjust month. */
     253        year += _floor_div(mon, 12);
     254        mon = _floor_mod(mon, 12);
     255
     256        /* Now the difficult part - days of month. */
     257       
     258        /* First, deal with whole cycles of 400 years = 146097 days. */
     259        year += _floor_div(day, 146097) * 400;
     260        day = _floor_mod(day, 146097);
     261       
     262        /* Then, go in one year steps. */
     263        if (mon <= 1) {
     264                /* January and February. */
     265                while (day > 365) {
     266                        day -= _is_leap_year(year) ? 366 : 365;
     267                        year++;
     268                }
     269        } else {
     270                /* Rest of the year. */
     271                while (day > 365) {
     272                        day -= _is_leap_year(year + 1) ? 366 : 365;
     273                        year++;
     274                }
     275        }
     276       
     277        /* Finally, finish it off month per month. */
     278        while (day >= _days_in_month(year, mon)) {
     279                day -= _days_in_month(year, mon);
     280                mon++;
     281                if (mon >= 12) {
     282                        mon -= 12;
     283                        year++;
     284                }
     285        }
     286       
     287        /* Calculate the remaining two fields. */
     288        tm->tm_yday = _day_of_year(year, mon, day + 1);
     289        tm->tm_wday = _day_of_week(year, mon, day + 1);
     290       
     291        /* And put the values back to the struct. */
     292        tm->tm_sec = (int) sec;
     293        tm->tm_min = (int) min;
     294        tm->tm_hour = (int) hour;
     295        tm->tm_mday = (int) day + 1;
     296        tm->tm_mon = (int) mon;
     297       
     298        /* Casts to work around libc brain-damage. */
     299        if (year > ((int)INT_MAX) || year < ((int)INT_MIN)) {
     300                tm->tm_year = (year < 0) ? ((int)INT_MIN) : ((int)INT_MAX);
     301                return -1;
     302        }
     303       
     304        tm->tm_year = (int) year;
     305        return 0;
     306}
     307
     308/**
     309 * Which day the week-based year starts on, relative to the first calendar day.
     310 * E.g. if the year starts on December 31st, the return value is -1.
     311 *
     312 * @param Year since 1900.
     313 * @return Offset of week-based year relative to calendar year.
     314 */
     315static int _wbyear_offset(int year)
     316{
     317        int start_wday = _day_of_week(year, 0, 1);
     318        return _floor_mod(4 - start_wday, 7) - 3;
     319}
     320
     321/**
     322 * Returns week-based year of the specified time.
     323 *
     324 * @param tm Normalized broken-down time.
     325 * @return Week-based year.
     326 */
     327static int _wbyear(const struct tm *tm)
     328{
     329        int day = tm->tm_yday - _wbyear_offset(tm->tm_year);
     330        if (day < 0) {
     331                /* Last week of previous year. */
     332                return tm->tm_year - 1;
     333        }
     334        if (day > 364 + _is_leap_year(tm->tm_year)) {
     335                /* First week of next year. */
     336                return tm->tm_year + 1;
     337        }
     338        /* All the other days are in the calendar year. */
     339        return tm->tm_year;
     340}
     341
     342/**
     343 * Week number of the year, assuming weeks start on sunday.
     344 * The first Sunday of January is the first day of week 1;
     345 * days in the new year before this are in week 0.
     346 *
     347 * @param tm Normalized broken-down time.
     348 * @return The week number (0 - 53).
     349 */
     350static int _sun_week_number(const struct tm *tm)
     351{
     352        int first_day = (7 - _day_of_week(tm->tm_year, 0, 1)) % 7;
     353        return (tm->tm_yday - first_day + 7) / 7;
     354}
     355
     356/**
     357 * Week number of the year, assuming weeks start on monday.
     358 * If the week containing January 1st has four or more days in the new year,
     359 * then it is considered week 1. Otherwise, it is the last week of the previous
     360 * year, and the next week is week 1. Both January 4th and the first Thursday
     361 * of January are always in week 1.
     362 *
     363 * @param tm Normalized broken-down time.
     364 * @return The week number (1 - 53).
     365 */
     366static int _iso_week_number(const struct tm *tm)
     367{
     368        int day = tm->tm_yday - _wbyear_offset(tm->tm_year);
     369        if (day < 0) {
     370                /* Last week of previous year. */
     371                return 53;
     372        }
     373        if (day > 364 + _is_leap_year(tm->tm_year)) {
     374                /* First week of next year. */
     375                return 1;
     376        }
     377        /* All the other days give correct answer. */
     378        return (day / 7 + 1);
     379}
     380
     381/**
     382 * Week number of the year, assuming weeks start on monday.
     383 * The first Monday of January is the first day of week 1;
     384 * days in the new year before this are in week 0.
     385 *
     386 * @param tm Normalized broken-down time.
     387 * @return The week number (0 - 53).
     388 */
     389static int _mon_week_number(const struct tm *tm)
     390{
     391        int first_day = (1 - _day_of_week(tm->tm_year, 0, 1)) % 7;
     392        return (tm->tm_yday - first_day + 7) / 7;
     393}
     394
     395/******************************************************************************/
     396
     397
    54398/** Add microseconds to given timeval.
    55399 *
    … …  
    139483 */
    140484int gettimeofday(struct timeval *tv, struct timezone *tz)
     485{
     486        int rc;
     487        struct tm t;
     488        category_id_t cat_id;
     489        size_t svc_cnt;
     490        service_id_t *svc_ids = NULL;
     491        service_id_t svc_id;
     492        char *svc_name = NULL;
     493
     494        static async_sess_t *clock_conn = NULL;
     495
     496        if (tz) {
     497                tz->tz_minuteswest = 0;
     498                tz->tz_dsttime = DST_NONE;
     499        }
     500
     501        if (clock_conn == NULL) {
     502                rc = loc_category_get_id("clock", &cat_id, IPC_FLAG_BLOCKING);
     503                if (rc != EOK)
     504                        goto ret_uptime;
     505
     506                rc = loc_category_get_svcs(cat_id, &svc_ids, &svc_cnt);
     507                if (rc != EOK)
     508                        goto ret_uptime;
     509
     510                if (svc_cnt == 0)
     511                        goto ret_uptime;
     512
     513                rc = loc_service_get_name(svc_ids[0], &svc_name);
     514                if (rc != EOK)
     515                        goto ret_uptime;
     516
     517                rc = loc_service_get_id(svc_name, &svc_id, 0);
     518                if (rc != EOK)
     519                        goto ret_uptime;
     520
     521                clock_conn = loc_service_connect(EXCHANGE_SERIALIZE,
     522                    svc_id, IPC_FLAG_BLOCKING);
     523                if (!clock_conn)
     524                        goto ret_uptime;
     525        }
     526
     527        rc = clock_dev_time_get(clock_conn, &t);
     528        if (rc != EOK)
     529                goto ret_uptime;
     530
     531        tv->tv_usec = 0;
     532        tv->tv_sec = mktime(&t);
     533
     534        free(svc_name);
     535        free(svc_ids);
     536
     537        return EOK;
     538
     539ret_uptime:
     540
     541        free(svc_name);
     542        free(svc_ids);
     543
     544        return getuptime(tv);
     545}
     546
     547int getuptime(struct timeval *tv)
    141548{
    142549        if (ktime == NULL) {
    … …  
    160567        }
    161568       
    162         if (tz) {
    163                 tz->tz_minuteswest = 0;
    164                 tz->tz_dsttime = DST_NONE;
    165         }
    166        
    167569        sysarg_t s2 = ktime->seconds2;
    168570       
    … …  
    178580        } else
    179581                tv->tv_sec = s1;
    180        
     582
    181583        return 0;
    182584}
    … …  
    229631}
    230632
     633/**
     634 * This function first normalizes the provided broken-down time
     635 * (moves all values to their proper bounds) and then tries to
     636 * calculate the appropriate time_t representation.
     637 *
     638 * @param tm Broken-down time.
     639 * @return time_t representation of the time, undefined value on overflow.
     640 */
     641time_t mktime(struct tm *tm)
     642{
     643        // TODO: take DST flag into account
     644        // TODO: detect overflow
     645
     646        _normalize_time(tm, 0);
     647        return _secs_since_epoch(tm);
     648}
     649
     650/**
     651 * Convert time and date to a string, based on a specified format and
     652 * current locale.
     653 *
     654 * @param s Buffer to write string to.
     655 * @param maxsize Size of the buffer.
     656 * @param format Format of the output.
     657 * @param tm Broken-down time to format.
     658 * @return Number of bytes written.
     659 */
     660size_t strftime(char *restrict s, size_t maxsize,
     661    const char *restrict format, const struct tm *restrict tm)
     662{
     663        assert(s != NULL);
     664        assert(format != NULL);
     665        assert(tm != NULL);
     666
     667        // TODO: use locale
     668        static const char *wday_abbr[] = {
     669                "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
     670        };
     671        static const char *wday[] = {
     672                "Sunday", "Monday", "Tuesday", "Wednesday",
     673                "Thursday", "Friday", "Saturday"
     674        };
     675        static const char *mon_abbr[] = {
     676                "Jan", "Feb", "Mar", "Apr", "May", "Jun",
     677                "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
     678        };
     679        static const char *mon[] = {
     680                "January", "February", "March", "April", "May", "June", "July",
     681                "August", "September", "October", "November", "December"
     682        };
     683       
     684        if (maxsize < 1) {
     685                return 0;
     686        }
     687       
     688        char *ptr = s;
     689        size_t consumed;
     690        size_t remaining = maxsize;
     691       
     692        #define append(...) { \
     693                /* FIXME: this requires POSIX-correct snprintf */ \
     694                /*        otherwise it won't work with non-ascii chars */ \
     695                consumed = snprintf(ptr, remaining, __VA_ARGS__); \
     696                if (consumed >= remaining) { \
     697                        return 0; \
     698                } \
     699                ptr += consumed; \
     700                remaining -= consumed; \
     701        }
     702       
     703        #define recurse(fmt) { \
     704                consumed = strftime(ptr, remaining, fmt, tm); \
     705                if (consumed == 0) { \
     706                        return 0; \
     707                } \
     708                ptr += consumed; \
     709                remaining -= consumed; \
     710        }
     711       
     712        #define TO_12H(hour) (((hour) > 12) ? ((hour) - 12) : \
     713            (((hour) == 0) ? 12 : (hour)))
     714       
     715        while (*format != '\0') {
     716                if (*format != '%') {
     717                        append("%c", *format);
     718                        format++;
     719                        continue;
     720                }
     721               
     722                format++;
     723                if (*format == '0' || *format == '+') {
     724                        // TODO: padding
     725                        format++;
     726                }
     727                while (isdigit(*format)) {
     728                        // TODO: padding
     729                        format++;
     730                }
     731                if (*format == 'O' || *format == 'E') {
     732                        // TODO: locale's alternative format
     733                        format++;
     734                }
     735               
     736                switch (*format) {
     737                case 'a':
     738                        append("%s", wday_abbr[tm->tm_wday]); break;
     739                case 'A':
     740                        append("%s", wday[tm->tm_wday]); break;
     741                case 'b':
     742                        append("%s", mon_abbr[tm->tm_mon]); break;
     743                case 'B':
     744                        append("%s", mon[tm->tm_mon]); break;
     745                case 'c':
     746                        // TODO: locale-specific datetime format
     747                        recurse("%Y-%m-%d %H:%M:%S"); break;
     748                case 'C':
     749                        append("%02d", (1900 + tm->tm_year) / 100); break;
     750                case 'd':
     751                        append("%02d", tm->tm_mday); break;
     752                case 'D':
     753                        recurse("%m/%d/%y"); break;
     754                case 'e':
     755                        append("%2d", tm->tm_mday); break;
     756                case 'F':
     757                        recurse("%+4Y-%m-%d"); break;
     758                case 'g':
     759                        append("%02d", _wbyear(tm) % 100); break;
     760                case 'G':
     761                        append("%d", _wbyear(tm)); break;
     762                case 'h':
     763                        recurse("%b"); break;
     764                case 'H':
     765                        append("%02d", tm->tm_hour); break;
     766                case 'I':
     767                        append("%02d", TO_12H(tm->tm_hour)); break;
     768                case 'j':
     769                        append("%03d", tm->tm_yday); break;
     770                case 'k':
     771                        append("%2d", tm->tm_hour); break;
     772                case 'l':
     773                        append("%2d", TO_12H(tm->tm_hour)); break;
     774                case 'm':
     775                        append("%02d", tm->tm_mon); break;
     776                case 'M':
     777                        append("%02d", tm->tm_min); break;
     778                case 'n':
     779                        append("\n"); break;
     780                case 'p':
     781                        append("%s", tm->tm_hour < 12 ? "AM" : "PM"); break;
     782                case 'P':
     783                        append("%s", tm->tm_hour < 12 ? "am" : "PM"); break;
     784                case 'r':
     785                        recurse("%I:%M:%S %p"); break;
     786                case 'R':
     787                        recurse("%H:%M"); break;
     788                case 's':
     789                        append("%ld", _secs_since_epoch(tm)); break;
     790                case 'S':
     791                        append("%02d", tm->tm_sec); break;
     792                case 't':
     793                        append("\t"); break;
     794                case 'T':
     795                        recurse("%H:%M:%S"); break;
     796                case 'u':
     797                        append("%d", (tm->tm_wday == 0) ? 7 : tm->tm_wday);
     798                        break;
     799                case 'U':
     800                        append("%02d", _sun_week_number(tm)); break;
     801                case 'V':
     802                        append("%02d", _iso_week_number(tm)); break;
     803                case 'w':
     804                        append("%d", tm->tm_wday); break;
     805                case 'W':
     806                        append("%02d", _mon_week_number(tm)); break;
     807                case 'x':
     808                        // TODO: locale-specific date format
     809                        recurse("%Y-%m-%d"); break;
     810                case 'X':
     811                        // TODO: locale-specific time format
     812                        recurse("%H:%M:%S"); break;
     813                case 'y':
     814                        append("%02d", tm->tm_year % 100); break;
     815                case 'Y':
     816                        append("%d", 1900 + tm->tm_year); break;
     817                case 'z':
     818                        // TODO: timezone
     819                        break;
     820                case 'Z':
     821                        // TODO: timezone
     822                        break;
     823                case '%':
     824                        append("%%");
     825                        break;
     826                default:
     827                        /* Invalid specifier, print verbatim. */
     828                        while (*format != '%') {
     829                                format--;
     830                        }
     831                        append("%%");
     832                        break;
     833                }
     834                format++;
     835        }
     836       
     837        #undef append
     838        #undef recurse
     839       
     840        return maxsize - remaining;
     841}
     842
     843
     844/** Converts a time value to a broken-down UTC time
     845 *
     846 * @param time    Time to convert
     847 * @param result  Structure to store the result to
     848 *
     849 * @return        EOK or a negative error code
     850 */
     851int utctime2tm(const time_t time, struct tm *restrict result)
     852{
     853        assert(result != NULL);
     854
     855        /* Set result to epoch. */
     856        result->tm_sec = 0;
     857        result->tm_min = 0;
     858        result->tm_hour = 0;
     859        result->tm_mday = 1;
     860        result->tm_mon = 0;
     861        result->tm_year = 70; /* 1970 */
     862
     863        if (_normalize_time(result, time) == -1)
     864                return EOVERFLOW;
     865
     866        return EOK;
     867}
     868
     869/** Converts a time value to a null terminated string of the form
     870 *  "Wed Jun 30 21:49:08 1993\n" expressed in UTC.
     871 *
     872 * @param time   Time to convert.
     873 * @param buf    Buffer to store the string to, must be at least
     874 *               ASCTIME_BUF_LEN bytes long.
     875 *
     876 * @return       EOK or a negative error code.
     877 */
     878int utctime2str(const time_t time, char *restrict buf)
     879{
     880        struct tm t;
     881        int r;
     882
     883        if ((r = utctime2tm(time, &t)) != EOK)
     884                return r;
     885
     886        tm2str(&t, buf);
     887        return EOK;
     888}
     889
     890
     891/**
     892 * Converts broken-down time to a string in format
     893 * "Sun Jan 1 00:00:00 1970\n". (Obsolete)
     894 *
     895 * @param timeptr Broken-down time structure.
     896 * @param buf     Buffer to store string to, must be at least ASCTIME_BUF_LEN
     897 *                bytes long.
     898 */
     899void tm2str(const struct tm *restrict timeptr, char *restrict buf)
     900{
     901        assert(timeptr != NULL);
     902        assert(buf != NULL);
     903
     904        static const char *wday[] = {
     905                "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
     906        };
     907        static const char *mon[] = {
     908                "Jan", "Feb", "Mar", "Apr", "May", "Jun",
     909                "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
     910        };
     911
     912        snprintf(buf, ASCTIME_BUF_LEN, "%s %s %2d %02d:%02d:%02d %d\n",
     913            wday[timeptr->tm_wday],
     914            mon[timeptr->tm_mon],
     915            timeptr->tm_mday, timeptr->tm_hour,
     916            timeptr->tm_min, timeptr->tm_sec,
     917            1900 + timeptr->tm_year);
     918}
     919
     920/**
     921 * Converts a time value to a broken-down local time, expressed relative
     922 * to the user's specified timezone.
     923 *
     924 * @param timer     Time to convert.
     925 * @param result    Structure to store the result to.
     926 *
     927 * @return          EOK on success or a negative error code.
     928 */
     929int localtime2tm(const time_t time, struct tm *restrict result)
     930{
     931        // TODO: deal with timezone
     932        // currently assumes system and all times are in GMT
     933
     934        /* Set result to epoch. */
     935        result->tm_sec = 0;
     936        result->tm_min = 0;
     937        result->tm_hour = 0;
     938        result->tm_mday = 1;
     939        result->tm_mon = 0;
     940        result->tm_year = 70; /* 1970 */
     941
     942        if (_normalize_time(result, time) == -1)
     943                return EOVERFLOW;
     944
     945        return EOK;
     946}
     947
     948/**
     949 * Converts the calendar time to a null terminated string
     950 * of the form "Wed Jun 30 21:49:08 1993\n" expressed relative to the
     951 * user's specified timezone.
     952 *
     953 * @param timer  Time to convert.
     954 * @param buf    Buffer to store the string to. Must be at least
     955 *               ASCTIME_BUF_LEN bytes long.
     956 *
     957 * @return       EOK on success or a negative error code.
     958 */
     959int localtime2str(const time_t time, char *buf)
     960{
     961        struct tm loctime;
     962        int r;
     963
     964        if ((r = localtime2tm(time, &loctime)) != EOK)
     965                return r;
     966
     967        tm2str(&loctime, buf);
     968
     969        return EOK;
     970}
     971
     972/**
     973 * Calculate the difference between two times, in seconds.
     974 *
     975 * @param time1 First time.
     976 * @param time0 Second time.
     977 * @return Time in seconds.
     978 */
     979double difftime(time_t time1, time_t time0)
     980{
     981        return (double) (time1 - time0);
     982}
     983
    231984/** @}
    232985 */

  • uspace/lib/c/include/ipc/dev_iface.h

    r01e397ac r2568c94  
    5454        /** Interface provided by USB HID devices. */
    5555        USBHID_DEV_IFACE,
     56        /** Interface provided by Real Time Clock devices */
     57        CLOCK_DEV_IFACE,
    5658        /** Interface provided by AHCI devices. */
    5759        AHCI_DEV_IFACE,

  • uspace/lib/c/include/sys/time.h

    r01e397ac r2568c94  
    11/*
    22 * Copyright (c) 2006 Ondrej Palkovsky
     3 * Copyright (c) 2011 Petr Koupy
     4 * Copyright (c) 2011 Jiri Zarevucky
    35 * All rights reserved.
    46 *
    … …  
    3941
    4042#define DST_NONE 0
     43#define ASCTIME_BUF_LEN 26
    4144
    4245typedef long time_t;
    … …  
    4548typedef uint32_t useconds_t;
    4649typedef uint32_t mseconds_t;
     50
     51struct tm {
     52        int tm_sec;         /* Seconds [0,60]. */
     53        int tm_min;         /* Minutes [0,59]. */
     54        int tm_hour;        /* Hour [0,23]. */
     55        int tm_mday;        /* Day of month [1,31]. */
     56        int tm_mon;         /* Month of year [0,11]. */
     57        int tm_year;        /* Years since 1900. */
     58        int tm_wday;        /* Day of week [0,6] (Sunday = 0). */
     59        int tm_yday;        /* Day of year [0,365]. */
     60        int tm_isdst;       /* Daylight Savings flag. */
     61};
    4762
    4863struct timeval {
    … …  
    6176extern int tv_gteq(struct timeval *tv1, struct timeval *tv2);
    6277extern int gettimeofday(struct timeval *tv, struct timezone *tz);
     78extern int getuptime(struct timeval *tv);
    6379
    6480extern void udelay(useconds_t);
     81
     82extern time_t mktime(struct tm *tm);
     83extern int utctime2tm(const time_t time, struct tm *result);
     84extern int utctime2str(const time_t time, char *buf);
     85extern void tm2str(const struct tm *timeptr, char *buf);
     86extern int localtime2tm(const time_t time, struct tm *result);
     87extern int localtime2str(const time_t time, char *buf);
     88extern double difftime(time_t time1, time_t time0);
     89extern size_t strftime(char *restrict s, size_t maxsize,
     90    const char *restrict format, const struct tm *restrict tm);
    6591
    6692#endif

  • uspace/lib/drv/Makefile

    r01e397ac r2568c94  
    4646        generic/remote_usbhc.c \
    4747        generic/remote_usbhid.c \
     48        generic/remote_clock_dev.c \
    4849        generic/remote_ahci.c
    4950

  • uspace/lib/drv/generic/dev_iface.c

    r01e397ac r2568c94  
    4141#include "remote_hw_res.h"
    4242#include "remote_char_dev.h"
     43#include "remote_clock_dev.h"
    4344#include "remote_graph_dev.h"
    4445#include "remote_nic.h"
    … …  
    5960                &remote_usbhc_iface,
    6061                &remote_usbhid_iface,
     62                &remote_clock_dev_iface,
    6163                &remote_ahci_iface
    6264        }

  • uspace/lib/posix/time.c

    r01e397ac r2568c94  
    6161 */
    6262
    63 
    64 
    65 /* Helper functions ***********************************************************/
    66 
    67 #define HOURS_PER_DAY (24)
    68 #define MINS_PER_HOUR (60)
    69 #define SECS_PER_MIN (60)
    70 #define MINS_PER_DAY (MINS_PER_HOUR * HOURS_PER_DAY)
    71 #define SECS_PER_HOUR (SECS_PER_MIN * MINS_PER_HOUR)
    72 #define SECS_PER_DAY (SECS_PER_HOUR * HOURS_PER_DAY)
    73 
    74 /**
    75  * Checks whether the year is a leap year.
    76  *
    77  * @param year Year since 1900 (e.g. for 1970, the value is 70).
    78  * @return true if year is a leap year, false otherwise
    79  */
    80 static bool _is_leap_year(time_t year)
    81 {
    82         year += 1900;
    83 
    84         if (year % 400 == 0)
    85                 return true;
    86         if (year % 100 == 0)
    87                 return false;
    88         if (year % 4 == 0)
    89                 return true;
    90         return false;
    91 }
    92 
    93 /**
    94  * Returns how many days there are in the given month of the given year.
    95  * Note that year is only taken into account if month is February.
    96  *
    97  * @param year Year since 1900 (can be negative).
    98  * @param mon Month of the year. 0 for January, 11 for December.
    99  * @return Number of days in the specified month.
    100  */
    101 static int _days_in_month(time_t year, time_t mon)
    102 {
    103         assert(mon >= 0 && mon <= 11);
    104 
    105         static int month_days[] =
    106                 { 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
    107 
    108         if (mon == 1) {
    109                 year += 1900;
    110                 /* february */
    111                 return _is_leap_year(year) ? 29 : 28;
    112         } else {
    113                 return month_days[mon];
    114         }
    115 }
    116 
    117 /**
    118  * For specified year, month and day of month, returns which day of that year
    119  * it is.
    120  *
    121  * For example, given date 2011-01-03, the corresponding expression is:
    122  *     _day_of_year(111, 0, 3) == 2
    123  *
    124  * @param year Year (year 1900 = 0, can be negative).
    125  * @param mon Month (January = 0).
    126  * @param mday Day of month (First day is 1).
    127  * @return Day of year (First day is 0).
    128  */
    129 static int _day_of_year(time_t year, time_t mon, time_t mday)
    130 {
    131         static int mdays[] =
    132             { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
    133         static int leap_mdays[] =
    134             { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 };
    135 
    136         return (_is_leap_year(year) ? leap_mdays[mon] : mdays[mon]) + mday - 1;
    137 }
    138 
    139 /**
    140  * Integer division that rounds to negative infinity.
    141  * Used by some functions in this file.
    142  *
    143  * @param op1 Divident.
    144  * @param op2 Divisor.
    145  * @return Rounded quotient.
    146  */
    147 static time_t _floor_div(time_t op1, time_t op2)
    148 {
    149         if (op1 >= 0 || op1 % op2 == 0) {
    150                 return op1 / op2;
    151         } else {
    152                 return op1 / op2 - 1;
    153         }
    154 }
    155 
    156 /**
    157  * Modulo that rounds to negative infinity.
    158  * Used by some functions in this file.
    159  *
    160  * @param op1 Divident.
    161  * @param op2 Divisor.
    162  * @return Remainder.
    163  */
    164 static time_t _floor_mod(time_t op1, time_t op2)
    165 {
    166         int div = _floor_div(op1, op2);
    167 
    168         /* (a / b) * b + a % b == a */
    169         /* thus, a % b == a - (a / b) * b */
    170 
    171         int result = op1 - div * op2;
    172        
    173         /* Some paranoid checking to ensure I didn't make a mistake here. */
    174         assert(result >= 0);
    175         assert(result < op2);
    176         assert(div * op2 + result == op1);
    177        
    178         return result;
    179 }
    180 
    181 /**
    182  * Number of days since the Epoch.
    183  * Epoch is 1970-01-01, which is also equal to day 0.
    184  *
    185  * @param year Year (year 1900 = 0, may be negative).
    186  * @param mon Month (January = 0).
    187  * @param mday Day of month (first day = 1).
    188  * @return Number of days since the Epoch.
    189  */
    190 static time_t _days_since_epoch(time_t year, time_t mon, time_t mday)
    191 {
    192         return (year - 70) * 365 + _floor_div(year - 69, 4) -
    193             _floor_div(year - 1, 100) + _floor_div(year + 299, 400) +
    194             _day_of_year(year, mon, mday);
    195 }
    196 
    197 /**
    198  * Seconds since the Epoch. see also _days_since_epoch().
    199  *
    200  * @param tm Normalized broken-down time.
    201  * @return Number of seconds since the epoch, not counting leap seconds.
    202  */
    203 static time_t _secs_since_epoch(const struct posix_tm *tm)
    204 {
    205         return _days_since_epoch(tm->tm_year, tm->tm_mon, tm->tm_mday) *
    206             SECS_PER_DAY + tm->tm_hour * SECS_PER_HOUR +
    207             tm->tm_min * SECS_PER_MIN + tm->tm_sec;
    208 }
    209 
    210 /**
    211  * Which day of week the specified date is.
    212  *
    213  * @param year Year (year 1900 = 0).
    214  * @param mon Month (January = 0).
    215  * @param mday Day of month (first = 1).
    216  * @return Day of week (Sunday = 0).
    217  */
    218 static int _day_of_week(time_t year, time_t mon, time_t mday)
    219 {
    220         /* 1970-01-01 is Thursday */
    221         return _floor_mod((_days_since_epoch(year, mon, mday) + 4), 7);
    222 }
    223 
    224 /**
    225  * Normalizes the broken-down time and optionally adds specified amount of
    226  * seconds.
    227  *
    228  * @param tm Broken-down time to normalize.
    229  * @param sec_add Seconds to add.
    230  * @return 0 on success, -1 on overflow
    231  */
    232 static int _normalize_time(struct posix_tm *tm, time_t sec_add)
    233 {
    234         // TODO: DST correction
    235 
    236         /* Set initial values. */
    237         time_t sec = tm->tm_sec + sec_add;
    238         time_t min = tm->tm_min;
    239         time_t hour = tm->tm_hour;
    240         time_t day = tm->tm_mday - 1;
    241         time_t mon = tm->tm_mon;
    242         time_t year = tm->tm_year;
    243 
    244         /* Adjust time. */
    245         min += _floor_div(sec, SECS_PER_MIN);
    246         sec = _floor_mod(sec, SECS_PER_MIN);
    247         hour += _floor_div(min, MINS_PER_HOUR);
    248         min = _floor_mod(min, MINS_PER_HOUR);
    249         day += _floor_div(hour, HOURS_PER_DAY);
    250         hour = _floor_mod(hour, HOURS_PER_DAY);
    251 
    252         /* Adjust month. */
    253         year += _floor_div(mon, 12);
    254         mon = _floor_mod(mon, 12);
    255 
    256         /* Now the difficult part - days of month. */
    257        
    258         /* First, deal with whole cycles of 400 years = 146097 days. */
    259         year += _floor_div(day, 146097) * 400;
    260         day = _floor_mod(day, 146097);
    261        
    262         /* Then, go in one year steps. */
    263         if (mon <= 1) {
    264                 /* January and February. */
    265                 while (day > 365) {
    266                         day -= _is_leap_year(year) ? 366 : 365;
    267                         year++;
    268                 }
    269         } else {
    270                 /* Rest of the year. */
    271                 while (day > 365) {
    272                         day -= _is_leap_year(year + 1) ? 366 : 365;
    273                         year++;
    274                 }
    275         }
    276        
    277         /* Finally, finish it off month per month. */
    278         while (day >= _days_in_month(year, mon)) {
    279                 day -= _days_in_month(year, mon);
    280                 mon++;
    281                 if (mon >= 12) {
    282                         mon -= 12;
    283                         year++;
    284                 }
    285         }
    286        
    287         /* Calculate the remaining two fields. */
    288         tm->tm_yday = _day_of_year(year, mon, day + 1);
    289         tm->tm_wday = _day_of_week(year, mon, day + 1);
    290        
    291         /* And put the values back to the struct. */
    292         tm->tm_sec = (int) sec;
    293         tm->tm_min = (int) min;
    294         tm->tm_hour = (int) hour;
    295         tm->tm_mday = (int) day + 1;
    296         tm->tm_mon = (int) mon;
    297        
    298         /* Casts to work around libc brain-damage. */
    299         if (year > ((int)INT_MAX) || year < ((int)INT_MIN)) {
    300                 tm->tm_year = (year < 0) ? ((int)INT_MIN) : ((int)INT_MAX);
    301                 return -1;
    302         }
    303        
    304         tm->tm_year = (int) year;
    305         return 0;
    306 }
    307 
    308 /**
    309  * Which day the week-based year starts on, relative to the first calendar day.
    310  * E.g. if the year starts on December 31st, the return value is -1.
    311  *
    312  * @param Year since 1900.
    313  * @return Offset of week-based year relative to calendar year.
    314  */
    315 static int _wbyear_offset(int year)
    316 {
    317         int start_wday = _day_of_week(year, 0, 1);
    318         return _floor_mod(4 - start_wday, 7) - 3;
    319 }
    320 
    321 /**
    322  * Returns week-based year of the specified time.
    323  *
    324  * @param tm Normalized broken-down time.
    325  * @return Week-based year.
    326  */
    327 static int _wbyear(const struct posix_tm *tm)
    328 {
    329         int day = tm->tm_yday - _wbyear_offset(tm->tm_year);
    330         if (day < 0) {
    331                 /* Last week of previous year. */
    332                 return tm->tm_year - 1;
    333         }
    334         if (day > 364 + _is_leap_year(tm->tm_year)) {
    335                 /* First week of next year. */
    336                 return tm->tm_year + 1;
    337         }
    338         /* All the other days are in the calendar year. */
    339         return tm->tm_year;
    340 }
    341 
    342 /**
    343  * Week number of the year, assuming weeks start on sunday.
    344  * The first Sunday of January is the first day of week 1;
    345  * days in the new year before this are in week 0.
    346  *
    347  * @param tm Normalized broken-down time.
    348  * @return The week number (0 - 53).
    349  */
    350 static int _sun_week_number(const struct posix_tm *tm)
    351 {
    352         int first_day = (7 - _day_of_week(tm->tm_year, 0, 1)) % 7;
    353         return (tm->tm_yday - first_day + 7) / 7;
    354 }
    355 
    356 /**
    357  * Week number of the year, assuming weeks start on monday.
    358  * If the week containing January 1st has four or more days in the new year,
    359  * then it is considered week 1. Otherwise, it is the last week of the previous
    360  * year, and the next week is week 1. Both January 4th and the first Thursday
    361  * of January are always in week 1.
    362  *
    363  * @param tm Normalized broken-down time.
    364  * @return The week number (1 - 53).
    365  */
    366 static int _iso_week_number(const struct posix_tm *tm)
    367 {
    368         int day = tm->tm_yday - _wbyear_offset(tm->tm_year);
    369         if (day < 0) {
    370                 /* Last week of previous year. */
    371                 return 53;
    372         }
    373         if (day > 364 + _is_leap_year(tm->tm_year)) {
    374                 /* First week of next year. */
    375                 return 1;
    376         }
    377         /* All the other days give correct answer. */
    378         return (day / 7 + 1);
    379 }
    380 
    381 /**
    382  * Week number of the year, assuming weeks start on monday.
    383  * The first Monday of January is the first day of week 1;
    384  * days in the new year before this are in week 0.
    385  *
    386  * @param tm Normalized broken-down time.
    387  * @return The week number (0 - 53).
    388  */
    389 static int _mon_week_number(const struct posix_tm *tm)
    390 {
    391         int first_day = (1 - _day_of_week(tm->tm_year, 0, 1)) % 7;
    392         return (tm->tm_yday - first_day + 7) / 7;
    393 }
    394 
    395 /******************************************************************************/
    396 
    39763int posix_daylight;
    39864long posix_timezone;
    … …  
    41278
    41379/**
    414  * Calculate the difference between two times, in seconds.
    415  *
    416  * @param time1 First time.
    417  * @param time0 Second time.
    418  * @return Time in seconds.
    419  */
    420 double posix_difftime(time_t time1, time_t time0)
    421 {
    422         return (double) (time1 - time0);
    423 }
    424 
    425 /**
    426  * This function first normalizes the provided broken-down time
    427  * (moves all values to their proper bounds) and then tries to
    428  * calculate the appropriate time_t representation.
    429  *
    430  * @param tm Broken-down time.
    431  * @return time_t representation of the time, undefined value on overflow.
    432  */
    433 time_t posix_mktime(struct posix_tm *tm)
    434 {
    435         // TODO: take DST flag into account
    436         // TODO: detect overflow
    437 
    438         _normalize_time(tm, 0);
    439         return _secs_since_epoch(tm);
    440 }
    441 
    442 /**
    443  * Converts a time value to a broken-down UTC time.
    444  *
    445  * @param timer Time to convert.
    446  * @return Normalized broken-down time in UTC, NULL on overflow.
    447  */
    448 struct posix_tm *posix_gmtime(const time_t *timer)
    449 {
    450         assert(timer != NULL);
    451 
    452         static struct posix_tm result;
    453         return posix_gmtime_r(timer, &result);
    454 }
    455 
    456 /**
    45780 * Converts a time value to a broken-down UTC time.
    45881 *
    … …  
    46184 * @return Value of result on success, NULL on overflow.
    46285 */
    463 struct posix_tm *posix_gmtime_r(const time_t *restrict timer,
    464     struct posix_tm *restrict result)
    465 {
    466         assert(timer != NULL);
    467         assert(result != NULL);
    468 
    469         /* Set result to epoch. */
    470         result->tm_sec = 0;
    471         result->tm_min = 0;
    472         result->tm_hour = 0;
    473         result->tm_mday = 1;
    474         result->tm_mon = 0;
    475         result->tm_year = 70; /* 1970 */
    476 
    477         if (_normalize_time(result, *timer) == -1) {
    478                 errno = EOVERFLOW;
     86struct tm *posix_gmtime_r(const time_t *restrict timer,
     87    struct tm *restrict result)
     88{
     89        int rc = utctime2tm(*timer, result);
     90        if (rc != EOK) {
     91                errno = rc;
    47992                return NULL;
    48093        }
    … …  
    48497
    48598/**
    486  * Converts a time value to a broken-down local time.
    487  *
    488  * @param timer Time to convert.
    489  * @return Normalized broken-down time in local timezone, NULL on overflow.
    490  */
    491 struct posix_tm *posix_localtime(const time_t *timer)
    492 {
    493         static struct posix_tm result;
    494         return posix_localtime_r(timer, &result);
     99 * Converts a time value to a broken-down UTC time.
     100 * (non reentrant version)
     101 *
     102 * @param timep  Time to convert
     103 * @return       Pointer to a statically allocated structure that stores
     104 *               the result, NULL in case of error.
     105 */
     106struct tm *posix_gmtime(const time_t *restrict timep)
     107{
     108        static struct tm result;
     109
     110        return posix_gmtime_r(timep, &result);
    495111}
    496112
    … …  
    502118 * @return Value of result on success, NULL on overflow.
    503119 */
    504 struct posix_tm *posix_localtime_r(const time_t *restrict timer,
    505     struct posix_tm *restrict result)
     120struct tm *posix_localtime_r(const time_t *restrict timer,
     121    struct tm *restrict result)
    506122{
    507123        // TODO: deal with timezone
    … …  
    511127
    512128/**
    513  * Converts broken-down time to a string in format
    514  * "Sun Jan 1 00:00:00 1970\n". (Obsolete)
    515  *
    516  * @param timeptr Broken-down time structure.
    517  * @return Pointer to a statically allocated string.
    518  */
    519 char *posix_asctime(const struct posix_tm *timeptr)
    520 {
    521         static char buf[ASCTIME_BUF_LEN];
    522         return posix_asctime_r(timeptr, buf);
     129 * Converts a time value to a broken-down local time.
     130 * (non reentrant version)
     131 *
     132 * @param timep    Time to convert.
     133 * @return         Pointer to a statically allocated structure that stores
     134 *                 the result, NULL in case of error.
     135 */
     136struct tm *posix_localtime(const time_t *restrict timep)
     137{
     138        static struct tm result;
     139
     140        return posix_localtime_r(timep, &result);
    523141}
    524142
    … …  
    532150 * @return Value of buf.
    533151 */
    534 char *posix_asctime_r(const struct posix_tm *restrict timeptr,
     152char *posix_asctime_r(const struct tm *restrict timeptr,
    535153    char *restrict buf)
    536154{
    537         assert(timeptr != NULL);
    538         assert(buf != NULL);
    539 
    540         static const char *wday[] = {
    541                 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
    542         };
    543         static const char *mon[] = {
    544                 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
    545                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
    546         };
    547 
    548         snprintf(buf, ASCTIME_BUF_LEN, "%s %s %2d %02d:%02d:%02d %d\n",
    549             wday[timeptr->tm_wday],
    550             mon[timeptr->tm_mon],
    551             timeptr->tm_mday, timeptr->tm_hour,
    552             timeptr->tm_min, timeptr->tm_sec,
    553             1900 + timeptr->tm_year);
    554 
     155        tm2str(timeptr, buf);
    555156        return buf;
    556157}
    557158
    558159/**
    559  * Equivalent to asctime(localtime(clock)).
    560  *
    561  * @param timer Time to convert.
    562  * @return Pointer to a statically allocated string holding the date.
    563  */
    564 char *posix_ctime(const time_t *timer)
    565 {
    566         struct posix_tm *loctime = posix_localtime(timer);
    567         if (loctime == NULL) {
    568                 return NULL;
    569         }
    570         return posix_asctime(loctime);
    571 }
    572 
    573 /**
    574  * Reentrant variant of ctime().
     160 * Convers broken-down time to a string in format
     161 * "Sun Jan 1 00:00:00 1970\n". (Obsolete)
     162 * (non reentrant version)
     163 *
     164 * @param timeptr    Broken-down time structure.
     165 * @return           Pointer to a statically allocated buffer that stores
     166 *                   the result, NULL in case of error.
     167 */
     168char *posix_asctime(const struct tm *restrict timeptr)
     169{
     170        static char buf[ASCTIME_BUF_LEN];
     171
     172        return posix_asctime_r(timeptr, buf);
     173}
     174
     175/**
     176 * Converts the calendar time to a string in format
     177 * "Sun Jan 1 00:00:00 1970\n" (Obsolete)
    575178 *
    576179 * @param timer Time to convert.
    577180 * @param buf Buffer to store string to. Must be at least ASCTIME_BUF_LEN
    578181 *     bytes long.
    579  * @return Pointer to buf on success, NULL on falure.
     182 * @return Pointer to buf on success, NULL on failure.
    580183 */
    581184char *posix_ctime_r(const time_t *timer, char *buf)
    582185{
    583         struct posix_tm loctime;
    584         if (posix_localtime_r(timer, &loctime) == NULL) {
     186        int r = localtime2str(*timer, buf);
     187        if (r != EOK) {
     188                errno = r;
    585189                return NULL;
    586190        }
    587         return posix_asctime_r(&loctime, buf);
    588 }
    589 
    590 /**
    591  * Convert time and date to a string, based on a specified format and
    592  * current locale.
    593  *
    594  * @param s Buffer to write string to.
    595  * @param maxsize Size of the buffer.
    596  * @param format Format of the output.
    597  * @param tm Broken-down time to format.
    598  * @return Number of bytes written.
    599  */
    600 size_t posix_strftime(char *restrict s, size_t maxsize,
    601     const char *restrict format, const struct posix_tm *restrict tm)
    602 {
    603         assert(s != NULL);
    604         assert(format != NULL);
    605         assert(tm != NULL);
    606 
    607         // TODO: use locale
    608         static const char *wday_abbr[] = {
    609                 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
    610         };
    611         static const char *wday[] = {
    612                 "Sunday", "Monday", "Tuesday", "Wednesday",
    613                 "Thursday", "Friday", "Saturday"
    614         };
    615         static const char *mon_abbr[] = {
    616                 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
    617                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
    618         };
    619         static const char *mon[] = {
    620                 "January", "February", "March", "April", "May", "June", "July",
    621                 "August", "September", "October", "November", "December"
    622         };
    623        
    624         if (maxsize < 1) {
    625                 return 0;
    626         }
    627        
    628         char *ptr = s;
    629         size_t consumed;
    630         size_t remaining = maxsize;
    631        
    632         #define append(...) { \
    633                 /* FIXME: this requires POSIX-correct snprintf */ \
    634                 /*        otherwise it won't work with non-ascii chars */ \
    635                 consumed = snprintf(ptr, remaining, __VA_ARGS__); \
    636                 if (consumed >= remaining) { \
    637                         return 0; \
    638                 } \
    639                 ptr += consumed; \
    640                 remaining -= consumed; \
    641         }
    642        
    643         #define recurse(fmt) { \
    644                 consumed = posix_strftime(ptr, remaining, fmt, tm); \
    645                 if (consumed == 0) { \
    646                         return 0; \
    647                 } \
    648                 ptr += consumed; \
    649                 remaining -= consumed; \
    650         }
    651        
    652         #define TO_12H(hour) (((hour) > 12) ? ((hour) - 12) : \
    653             (((hour) == 0) ? 12 : (hour)))
    654        
    655         while (*format != '\0') {
    656                 if (*format != '%') {
    657                         append("%c", *format);
    658                         format++;
    659                         continue;
    660                 }
    661                
    662                 format++;
    663                 if (*format == '0' || *format == '+') {
    664                         // TODO: padding
    665                         format++;
    666                 }
    667                 while (isdigit(*format)) {
    668                         // TODO: padding
    669                         format++;
    670                 }
    671                 if (*format == 'O' || *format == 'E') {
    672                         // TODO: locale's alternative format
    673                         format++;
    674                 }
    675                
    676                 switch (*format) {
    677                 case 'a':
    678                         append("%s", wday_abbr[tm->tm_wday]); break;
    679                 case 'A':
    680                         append("%s", wday[tm->tm_wday]); break;
    681                 case 'b':
    682                         append("%s", mon_abbr[tm->tm_mon]); break;
    683                 case 'B':
    684                         append("%s", mon[tm->tm_mon]); break;
    685                 case 'c':
    686                         // TODO: locale-specific datetime format
    687                         recurse("%Y-%m-%d %H:%M:%S"); break;
    688                 case 'C':
    689                         append("%02d", (1900 + tm->tm_year) / 100); break;
    690                 case 'd':
    691                         append("%02d", tm->tm_mday); break;
    692                 case 'D':
    693                         recurse("%m/%d/%y"); break;
    694                 case 'e':
    695                         append("%2d", tm->tm_mday); break;
    696                 case 'F':
    697                         recurse("%+4Y-%m-%d"); break;
    698                 case 'g':
    699                         append("%02d", _wbyear(tm) % 100); break;
    700                 case 'G':
    701                         append("%d", _wbyear(tm)); break;
    702                 case 'h':
    703                         recurse("%b"); break;
    704                 case 'H':
    705                         append("%02d", tm->tm_hour); break;
    706                 case 'I':
    707                         append("%02d", TO_12H(tm->tm_hour)); break;
    708                 case 'j':
    709                         append("%03d", tm->tm_yday); break;
    710                 case 'k':
    711                         append("%2d", tm->tm_hour); break;
    712                 case 'l':
    713                         append("%2d", TO_12H(tm->tm_hour)); break;
    714                 case 'm':
    715                         append("%02d", tm->tm_mon); break;
    716                 case 'M':
    717                         append("%02d", tm->tm_min); break;
    718                 case 'n':
    719                         append("\n"); break;
    720                 case 'p':
    721                         append("%s", tm->tm_hour < 12 ? "AM" : "PM"); break;
    722                 case 'P':
    723                         append("%s", tm->tm_hour < 12 ? "am" : "PM"); break;
    724                 case 'r':
    725                         recurse("%I:%M:%S %p"); break;
    726                 case 'R':
    727                         recurse("%H:%M"); break;
    728                 case 's':
    729                         append("%ld", _secs_since_epoch(tm)); break;
    730                 case 'S':
    731                         append("%02d", tm->tm_sec); break;
    732                 case 't':
    733                         append("\t"); break;
    734                 case 'T':
    735                         recurse("%H:%M:%S"); break;
    736                 case 'u':
    737                         append("%d", (tm->tm_wday == 0) ? 7 : tm->tm_wday); break;
    738                 case 'U':
    739                         append("%02d", _sun_week_number(tm)); break;
    740                 case 'V':
    741                         append("%02d", _iso_week_number(tm)); break;
    742                 case 'w':
    743                         append("%d", tm->tm_wday); break;
    744                 case 'W':
    745                         append("%02d", _mon_week_number(tm)); break;
    746                 case 'x':
    747                         // TODO: locale-specific date format
    748                         recurse("%Y-%m-%d"); break;
    749                 case 'X':
    750                         // TODO: locale-specific time format
    751                         recurse("%H:%M:%S"); break;
    752                 case 'y':
    753                         append("%02d", tm->tm_year % 100); break;
    754                 case 'Y':
    755                         append("%d", 1900 + tm->tm_year); break;
    756                 case 'z':
    757                         // TODO: timezone
    758                         break;
    759                 case 'Z':
    760                         // TODO: timezone
    761                         break;
    762                 case '%':
    763                         append("%%");
    764                         break;
    765                 default:
    766                         /* Invalid specifier, print verbatim. */
    767                         while (*format != '%') {
    768                                 format--;
    769                         }
    770                         append("%%");
    771                         break;
    772                 }
    773                 format++;
    774         }
    775        
    776         #undef append
    777         #undef recurse
    778        
    779         return maxsize - remaining;
     191
     192        return buf;
     193}
     194
     195/**
     196 * Converts the calendar time to a string in format
     197 * "Sun Jan 1 00:00:00 1970\n" (Obsolete)
     198 * (non reentrant version)
     199 *
     200 * @param timep    Time to convert.
     201 * @return         Pointer to a statically allocated buffer that stores
     202 *                 the result, NULL in case of error.
     203 */
     204char *posix_ctime(const time_t *timep)
     205{
     206        static char buf[ASCTIME_BUF_LEN];
     207
     208        return posix_ctime_r(timep, buf);
    780209}
    781210
    … …  
    894323        stats_task_t *task_stats = stats_get_task(task_get_id());
    895324        if (task_stats) {
    896                 total_cycles = (posix_clock_t) (task_stats->kcycles + task_stats->ucycles);
     325                total_cycles = (posix_clock_t) (task_stats->kcycles +
     326                    task_stats->ucycles);
    897327                free(task_stats);
    898328                task_stats = 0;

  • uspace/lib/posix/time.h

    r01e397ac r2568c94  
    6363#endif
    6464
    65 #undef ASCTIME_BUF_LEN
    66 #define ASCTIME_BUF_LEN 26
    67 
    6865#undef CLOCK_REALTIME
    6966#define CLOCK_REALTIME ((posix_clockid_t) 0)
    70 
    71 struct posix_tm {
    72         int tm_sec;         /* Seconds [0,60]. */
    73         int tm_min;         /* Minutes [0,59]. */
    74         int tm_hour;        /* Hour [0,23]. */
    75         int tm_mday;        /* Day of month [1,31]. */
    76         int tm_mon;         /* Month of year [0,11]. */
    77         int tm_year;        /* Years since 1900. */
    78         int tm_wday;        /* Day of week [0,6] (Sunday = 0). */
    79         int tm_yday;        /* Day of year [0,365]. */
    80         int tm_isdst;       /* Daylight Savings flag. */
    81 };
    8267
    8368struct posix_timespec {
    … …  
    9984extern void posix_tzset(void);
    10085
    101 /* Elapsed Time */
    102 extern double posix_difftime(time_t time1, time_t time0);
    103 
    10486/* Broken-down Time */
    105 extern time_t posix_mktime(struct posix_tm *tm);
    106 extern struct posix_tm *posix_gmtime(const time_t *timer);
    107 extern struct posix_tm *posix_gmtime_r(const time_t *restrict timer,
    108     struct posix_tm *restrict result);
    109 extern struct posix_tm *posix_localtime(const time_t *timer);
    110 extern struct posix_tm *posix_localtime_r(const time_t *restrict timer,
    111     struct posix_tm *restrict result);
     87extern struct tm *posix_gmtime_r(const time_t *restrict timer,
     88    struct tm *restrict result);
     89extern struct tm *posix_gmtime(const time_t *restrict timep);
     90extern struct tm *posix_localtime_r(const time_t *restrict timer,
     91    struct tm *restrict result);
     92extern struct tm *posix_localtime(const time_t *restrict timep);
    11293
    11394/* Formatting Calendar Time */
    114 extern char *posix_asctime(const struct posix_tm *timeptr);
    115 extern char *posix_asctime_r(const struct posix_tm *restrict timeptr,
     95extern char *posix_asctime_r(const struct tm *restrict timeptr,
    11696    char *restrict buf);
     97extern char *posix_asctime(const struct tm *restrict timeptr);
     98extern char *posix_ctime_r(const time_t *timer, char *buf);
    11799extern char *posix_ctime(const time_t *timer);
    118 extern char *posix_ctime_r(const time_t *timer, char *buf);
    119 extern size_t posix_strftime(char *restrict s, size_t maxsize,
    120     const char *restrict format, const struct posix_tm *restrict tm);
    121100
    122101/* Clocks */
    … …  
    134113
    135114#ifndef LIBPOSIX_INTERNAL
    136         #define tm posix_tm
    137         #define timespec posix_timespec
    138         #define itimerspec posix_itimerspec
    139         #define timer_t posix_timer_t
     115        #define timespec    posix_timespec
     116        #define itimerspec  posix_itimerspec
     117        #define timer_t     posix_timer_t
    140118
    141         #define daylight posix_daylight
    142         #define timezone posix_timezone
    143         #define tzname posix_tzname
    144         #define tzset posix_tzset
     119        #define daylight    posix_daylight
     120        #define timezone    posix_timezone
     121        #define tzname      posix_tzname
     122        #define tzset       posix_tzset
    145123
    146         #define difftime posix_difftime
     124        #define gmtime_r    posix_gmtime_r
     125        #define gmtime      posix_gmtime
     126        #define localtime_r posix_localtime_r
     127        #define localtime   posix_localtime
    147128
    148         #define mktime posix_mktime
    149         #define gmtime posix_gmtime
    150         #define gmtime_r posix_gmtime_r
    151         #define localtime posix_localtime
    152         #define localtime_r posix_localtime_r
    153 
    154         #define asctime posix_asctime
    155         #define asctime_r posix_asctime_r
    156         #define ctime posix_ctime
    157         #define ctime_r posix_ctime_r
    158         #define strftime posix_strftime
     129        #define asctime_r   posix_asctime_r
     130        #define asctime     posix_asctime
     131        #define ctime_r     posix_ctime_r
     132        #define ctime       posix_ctime
    159133
    160134        #define clock_getres posix_clock_getres

  • uspace/srv/locsrv/locsrv.c

    r01e397ac r2568c94  
    13531353        categ_dir_add_cat(&cdir, cat);
    13541354
     1355        cat = category_new("clock");
     1356        categ_dir_add_cat(&cdir, cat);
     1357
    13551358        cat = category_new("test3");
    13561359        categ_dir_add_cat(&cdir, cat);
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