sl@0: /*
sl@0: * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: * Time handling
sl@0: *
sl@0: *
sl@0: */
sl@0:
sl@0:
sl@0:
sl@0: #include <stdlib.h> /* definition of exit() */
sl@0: #include <stdio.h>
sl@0: #include <errno.h>
sl@0: #include <string.h>
sl@0: #include <time.h>
sl@0: #include <sys/time.h> /* timeval, gettimeofday */
sl@0:
sl@0: void msdev_time_example(void);
sl@0:
sl@0: void NEXT_TEST(const char *title)
sl@0: {
sl@0: static int first = 1;
sl@0: int c;
sl@0: if (!first)
sl@0: {
sl@0: printf("\nContinue [Y/N]? ");
sl@0: c = getchar();
sl@0: if (c == 'q' || c == 'Q' || c == 'n' || c == 'N')
sl@0: {
sl@0: printf("\nAbandoned.\n");
sl@0: exit(-1);
sl@0: }
sl@0: }
sl@0: first = 0;
sl@0: printf("\f\n%s\n\n", title);
sl@0: }
sl@0:
sl@0: /**
sl@0: @SYMTestCaseID SYSLIB-STDLIB-CT-1080
sl@0: @SYMTestCaseDesc Time handling functions test
sl@0: @SYMTestPriority High
sl@0: @SYMTestActions Tests for time handling routines
sl@0: @SYMTestExpectedResults Test must not fail
sl@0: @SYMREQ REQ0000
sl@0: */
sl@0: int main (int argc, char *argv[])
sl@0: {
sl@0: time_t now, then;
sl@0: struct tm *tmp, newtm;
sl@0: char tmpbuf[128];
sl@0: struct timeval tv, tv2;
sl@0: struct timezone tz;
sl@0: int err, duration, count;
sl@0:
sl@0: NEXT_TEST("What's the time, Mr Epoc32");
sl@0:
sl@0: then = 0;
sl@0: now = time(0);
sl@0: err = gettimeofday(&tv, &tz);
sl@0:
sl@0: printf("time_t 0 = %9ld = %s\n", then, ctime(&then));
sl@0: printf("time now = %9ld = %s", now, ctime(&now));
sl@0:
sl@0: if (err < 0)
sl@0: printf("gettimeofday failed\n");
sl@0: else
sl@0: {
sl@0: printf("gettimeofday = %9ld + %d usecs\n\n", tv.tv_sec, tv.tv_usec);
sl@0: printf("timezone = %d mins west of GMT, DST is %s\n",
sl@0: tz.tz_minuteswest, tz.tz_dsttime? "ON":"OFF");
sl@0: }
sl@0:
sl@0:
sl@0: NEXT_TEST("Cost of getttimeofday");
sl@0:
sl@0: count = 0;
sl@0: gettimeofday(&tv, &tz);
sl@0:
sl@0: /* Wait for first usec transition */
sl@0: err = gettimeofday(&tv2, &tz);
sl@0: while (err == 0 && tv2.tv_sec == tv.tv_sec && tv2.tv_usec == tv.tv_usec)
sl@0: {
sl@0: err = gettimeofday(&tv, &tz);
sl@0: }
sl@0:
sl@0: /* Now wait for second transition */
sl@0: err = gettimeofday(&tv2, &tz);
sl@0: while (err == 0 && tv2.tv_sec == tv.tv_sec &&tv2.tv_usec == tv.tv_usec)
sl@0: {
sl@0: err = gettimeofday(&tv2, &tz);
sl@0: count+=1;
sl@0: }
sl@0:
sl@0: if (err < 0)
sl@0: printf("gettimeofday failed\n");
sl@0: else
sl@0: {
sl@0: duration = 1000000 *(tv2.tv_sec - tv.tv_sec) + tv2.tv_usec - tv.tv_usec;
sl@0: if (tv2.tv_usec < tv.tv_usec)
sl@0: duration += 1000000;
sl@0: printf("smallest usec delta = %d usecs\n", duration);
sl@0: printf("gettimeofday took %d usecs for %d calls = %d usecs\n",
sl@0: duration, count, duration/count);
sl@0: }
sl@0:
sl@0:
sl@0: NEXT_TEST("localtime: Conversion to struct tm");
sl@0:
sl@0: tmp = localtime(&now);
sl@0: printf("time now = %9ld = %s", now, ctime(&now));
sl@0: printf("tm now = %02d/%02d/%02d %02d:%02d.%02d, wday=%d, dayno=%d\n",
sl@0: tmp->tm_mday, tmp->tm_mon+1, tmp->tm_year,
sl@0: tmp->tm_hour, tmp->tm_min, tmp->tm_sec,
sl@0: tmp->tm_wday, tmp->tm_yday);
sl@0:
sl@0:
sl@0: NEXT_TEST("mktime: Conversion from struct tm");
sl@0:
sl@0: /* Example derived from MSDEV mktime documentation */
sl@0:
sl@0: newtm.tm_mday = 03;
sl@0: newtm.tm_mon = 04;
sl@0: newtm.tm_year = 94;
sl@0: newtm.tm_hour = 12;
sl@0: newtm.tm_min = 45;
sl@0: newtm.tm_sec = 47;
sl@0: newtm.tm_wday = 9999;
sl@0: newtm.tm_yday = 9999;
sl@0:
sl@0: tmp = &newtm;
sl@0: printf("tm before = %02d/%02d/%02d %02d:%02d.%02d, wday=%d, dayno=%d\n",
sl@0: tmp->tm_mday, tmp->tm_mon+1, tmp->tm_year,
sl@0: tmp->tm_hour, tmp->tm_min, tmp->tm_sec,
sl@0: tmp->tm_wday, tmp->tm_yday);
sl@0: then = mktime(tmp);
sl@0: printf("tm after = %02d/%02d/%02d %02d:%02d.%02d, wday=%d, dayno=%d\n",
sl@0: tmp->tm_mday, tmp->tm_mon+1, tmp->tm_year,
sl@0: tmp->tm_hour, tmp->tm_min, tmp->tm_sec,
sl@0: tmp->tm_wday, tmp->tm_yday);
sl@0: printf("then = %ld = %s", then, ctime(&then));
sl@0:
sl@0: printf("\nAdd 29 days...(Wed Jun 01)\n\n");
sl@0: newtm.tm_mday += 29;
sl@0: then = mktime(tmp);
sl@0: printf("tm after = %02d/%02d/%04d %02d:%02d.%02d, wday=%d, dayno=%d\n",
sl@0: tmp->tm_mday, tmp->tm_mon+1, tmp->tm_year+1900,
sl@0: tmp->tm_hour, tmp->tm_min, tmp->tm_sec,
sl@0: tmp->tm_wday, tmp->tm_yday);
sl@0: printf("then = %ld = %s", then, ctime(&then));
sl@0:
sl@0:
sl@0: NEXT_TEST("strftime: customised string conversion");
sl@0:
sl@0: tmp = localtime( &now );
sl@0: strftime( tmpbuf, 128,
sl@0: "Today is %A, day %d of %B in the year %Y.\n", tmp );
sl@0: printf("time now = %9ld = %s", now, ctime(&now));
sl@0: printf( tmpbuf );
sl@0:
sl@0:
sl@0: NEXT_TEST("Example code from MSDEV documentation");
sl@0:
sl@0: msdev_time_example();
sl@0:
sl@0: return 0;
sl@0: }
sl@0:
sl@0: /*
sl@0: Example code derived from MSDEV documentation on time() function
sl@0:
sl@0: Time in seconds since UTC 1/1/70: 768027063
sl@0: UNIX time and date: Tue May 03 21:51:03 1994
sl@0: Coordinated universal time: Wed May 04 04:51:03 1994
sl@0: 12-hour time: 09:51:03 PM
sl@0: Christmas Sat Dec 25 12:00:00 1993
sl@0:
sl@0: Today is Tuesday, day 03 of May in the year 1994.
sl@0: */
sl@0:
sl@0: void msdev_time_example(void)
sl@0: {
sl@0: char tmpbuf[128], ampm[] = "AM";
sl@0: time_t ltime;
sl@0: struct tm *today, *gmt, xmas = { 0, 0, 12, 25, 11, 93 };
sl@0:
sl@0: /* Get UNIX-style time and display as number and string.
sl@0: * time( <ime ); Tue May 03 21:51:03 1994
sl@0: */
sl@0: struct tm example = { 3, 51, 21, 3, 4, 94 };
sl@0: ltime = mktime(&example);
sl@0:
sl@0: printf( "Time in seconds since UTC 1/1/70: %ld\n", ltime );
sl@0: printf( "UNIX time and date: %s", ctime( <ime ) );
sl@0:
sl@0: /* Display UTC. */
sl@0: gmt = gmtime( <ime );
sl@0: printf( "Coordinated universal time: %s", asctime( gmt ) );
sl@0:
sl@0: /* Convert to time structure and adjust for PM if necessary. */
sl@0: today = localtime( <ime );
sl@0: if( today->tm_hour > 12 )
sl@0: {
sl@0: strcpy( ampm, "PM" );
sl@0: today->tm_hour -= 12;
sl@0: }
sl@0: if( today->tm_hour == 0 ) /* Adjust if midnight hour. */
sl@0: today->tm_hour = 12;
sl@0:
sl@0: /* Note how pointer addition is used to skip the first 11
sl@0: * characters and printf is used to trim off terminating
sl@0: * characters.
sl@0: */
sl@0: printf( "12-hour time: %.8s %s\n",
sl@0: asctime( today ) + 11, ampm );
sl@0:
sl@0: /* Make time for noon on Christmas, 1993. */
sl@0: if( mktime( &xmas ) != (time_t)-1 )
sl@0: printf( "Christmas %s\n", asctime( &xmas ) );
sl@0:
sl@0: /* Use time structure to build a customized time string. */
sl@0: today = localtime( <ime );
sl@0:
sl@0: /* Use strftime to build a customized time string. */
sl@0: strftime( tmpbuf, 128,
sl@0: "Today is %A, day %d of %B in the year %Y.\n", today );
sl@0: printf( tmpbuf );
sl@0: }
sl@0:
sl@0:
sl@0:
sl@0: