sl@0: // Copyright (c) 1998-2009 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.CPP
sl@0: // Mapping between EPOC32 time and libc time
sl@0: // The basic philosophy is to work in time_t units (TInt) which
sl@0: // will be essentially TTimeIntervalSeconds from the start of Unix time.
sl@0: // To stay compliant with the C-Standard (with reference to C99 draft), we  
sl@0: // set the meaning of time_t to be Universal time.
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include <sys/time.h> // struct timeval, timezone
sl@0: 
sl@0: #define UNIX_BASE   TTime(MAKE_TINT64(0x00dcddb3,0x0f2f8000))    // 00:00, Jan 1st 1970
sl@0: 
sl@0: // external interface for the C library
sl@0: 
sl@0: extern "C" {
sl@0: 
sl@0: /*
sl@0: Intended Usage:	The gettimeofday function obtains the current UTC time, which is 
sl@0: 				expressed as seconds and microseconds since 00:00:00 Coordinated Universal Time (UTC), 
sl@0: 				January 1, 1970, and stores it in a timeval structure.
sl@0: 				Please note that tz_minuteswest includes daytime saving. The struct member tz_dsttime is no 
sl@0: 				longer supported by Symbian OS and therefore set to Zero.
sl@0: 
sl@0: */
sl@0: EXPORT_C 
sl@0: int gettimeofday (struct timeval *tp, struct timezone *tzp)
sl@0:     {
sl@0:     if (tp)
sl@0: 	{
sl@0: 	TTime t;
sl@0: 	t.UniversalTime();
sl@0: 	
sl@0: 	TTimeIntervalSeconds sec;
sl@0: 	TInt err = t.SecondsFrom(UNIX_BASE, sec);
sl@0: 	if (err)
sl@0: 	    return -1;
sl@0: 	else
sl@0: 	    tp->tv_sec = sec.Int();
sl@0: 	t -= sec;
sl@0: 	TTimeIntervalMicroSeconds usec = t.MicroSecondsFrom(UNIX_BASE);
sl@0: 	TInt64 hackyfix = usec.Int64();	// because GetTInt() isn't declared const
sl@0: 	tp->tv_usec = I64INT(hackyfix);
sl@0: 	}
sl@0:     if (tzp)
sl@0: 	{
sl@0: 	    tzp->tz_minuteswest = (User::UTCOffset().Int())/60;
sl@0: 	    tzp->tz_dsttime = 0;
sl@0: 	}
sl@0:     return 0;
sl@0:     }
sl@0: 
sl@0: } // extern "C"