The 1 st argument points to the timeval structure.
localtime, _localtime32, _localtime64
The 2 nd argument points to the timezone structure. It should normally be set to NULL because struct timezone is obsolete. This argument is for backwards compatibility only. On success, the gettimeofday return 0, for failure the function returns If you run the program you should see the output.
Each time you run the program the output will change. In this example shows that first argument of the gettimeofday function should not be NULL.
Compilation warning will come if the first argument is NULL. In this example shows how to print Date and Time in different format. It is not a very easy to represent dates from the return value of gettimeofday function.
Format specifiers are used for formatted display. This example shows that how gettimeofday function may be used for calculation of execution time of a program. About the author Bamdeb Ghosh Bamdeb Ghosh is having hands-on experience in Wireless networking domain. He's an expert in Wireshark capture analysis on Wireless or Wired Networking along with knowledge of Android, Bluetooth, Linux commands and python.
The current time is expressed in elapsed seconds and microseconds sinceJanuary 1, Unix Epoch. In this article, we are going to show you how to use the gettimeofday function in Linux.
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Does anyone know an equivalent function of the gettimeofday function in Windows environment? I am comparing a code execution time in Linux vs Windows. I am using MS Visual Studio and it keeps saying, identifier "gettimeofday" is undefined. For taking intervals with the best possible resolution limited by hardware onlyuse QueryPerformanceCounter. However if you want to time code, I suggest you look into QueryPerformanceCounter or by directly invoking the TSC if you're only going to run on x86 for example.
Thank you, Howard Hinnant for advice.
Learn more. Equivalent of gettimeday for Windows Ask Question. Asked 8 years, 4 months ago. Active 9 months ago. Viewed 56k times. Jonathan Leffler k gold badges silver badges bronze badges. Benny Benny 1, 3 3 gold badges 14 14 silver badges 27 27 bronze badges. Active Oldest Votes. For interval taking, use GetTickCount. It returns milliseconds since startup. Seva Alekseyev Seva Alekseyev Michaelangel Michaelangel 2, 1 1 gold badge 20 20 silver badges 20 20 bronze badges.
Very good. I have a code which was included this implementation. Exactely the same one, but I need to have this code working on Linux and I don't know how to do that.
See my usage on my Buddhabrot project: raw. I know this is old, why is tzp passed in, as it isn't referenced? SPlatten tz never should be anything but null NuSkooler NuSkooler 4, 1 1 gold badge 28 28 silver badges 54 54 bronze badges.
I don't know why you use it. Not a big deal, I know. It has only resolution of 1 sec, so if you want to cound microsecs, go on with the other examples.
I then went on to build a string from pieces of localbut you could do what you wanted at this point. Learn more. Ask Question.
Asked 10 years, 6 months ago. Active 8 months ago. Viewed 69k times. Thanks for your reply and any help would be very appreciated:. Can you post the exception you are getting? Please explain the actual error that you're getting--"error of exception handling" isn't very specific. Please don't post the same question multiple times.
Duplicate of stackoverflow. As i need a help to solve this problem, i posted different question within time of trying to solve it Active Oldest Votes. Neokoder Neokoder 2 2 silver badges 4 4 bronze badges. This helped me alot, but I needed a more precise time. Philm Philm 2, 23 23 silver badges 23 23 bronze badges. There are a few different types to represent a time.
Kate Gregory Kate Gregory Thanks a lot for your reply. I could use time function but it is not as precise as gettimeofday function and this make me a problem because I am tying to compare results I obtained on Unix with those I will obtain on Windows. Areeha Areeha 5 5 silver badges 9 9 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Ben answers his first question on Stack Overflow. The Overflow Bugs vs. Featured on Meta.Skip to main content. Contents Exit focus mode.
GetSystemTimeAdjustment Determines whether the system is applying periodic time adjustments to its time-of-day clock. GetTimeFormat Formats a system time as a time string for a specified locale.
NtQuerySystemTime Returns the system time.
RtlTimeToSecondsSince Converts the specified system time to the number of seconds since the first second of January 1, SetSystemTime Sets the current system time and date. SetSystemTimeAdjustment Enables or disables periodic time adjustments to the system's time-of-day clock. The following functions are used with local time. Function Description EnumDynamicTimeZoneInformation Enumerates dynamic daylight saving time information entries stored in the registry.
GetDynamicTimeZoneInformation Retrieves the current time zone and dynamic daylight saving time settings. GetLocalTime Retrieves the current local date and time. GetTimeZoneInformation Retrieves the current time zone settings. SetLocalTime Sets the current local time and date.
SetTimeZoneInformation Sets the current time zone settings. The following functions are used with file time. GetFileTime Retrieves the date and time that the specified file or directory was created, last accessed, and last modified. SetFileTime Sets the date and time that the specified file or directory was created, last accessed, or last modified.
The following functions are used with Windows time. GetTickCount Retrieves the number of milliseconds that have elapsed since the system was started, up to GetTickCount64 Retrieves the number of milliseconds that have elapsed since the system was started.
The following functions are used with high-resolution performance counters.We use optional third-party analytics cookies to understand how you use GitHub. Learn more. You can always update your selection by clicking Cookie Preferences at the bottom of the page. For more information, see our Privacy Statement. We use essential cookies to perform essential website functions, e.
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Please attach a license to the code. I can not use it unless you put a license. How do i printf the time? Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Accept Reject.Converts a time value and corrects for the local time zone. Return a pointer to the structure result, or NULL if the date passed to the function is:.
This is not recommended because your application may fail after January 18,and it is not allowed on bit platforms. The fields of the structure type tm store the following values, each of which is an int :. If the TZ environment variable is set, the C run-time library assumes rules appropriate to the United States for implementing the calculation of daylight-saving time DST. The long value sourceTime represents the seconds elapsed since midnightJanuary 1,UTC. This value is usually obtained from the time function.
Both the bit and bit versions of gmtimemktimemkgmtimeand localtime all use a single tm structure per thread for the conversion. Each call to one of these routines destroys the result of the previous call. These functions validate their parameters. If sourceTime is a null pointer, or if the sourceTime value is negative, these functions invoke an invalid parameter handler, as described in Parameter Validation.
By default, this function's global state is scoped to the application. To change this, see Global state in the CRT. For additional compatibility information, see Compatibility. Skip to main content. Contents Exit focus mode. Note The target environment should try to determine whether daylight saving time is in effect. Is this page helpful?
“sys/time.h” Replacement for Windows
Yes No. Any additional feedback? Skip Submit. Submit and view feedback for This product This page. View all page feedback. Positive value if daylight saving time is in effect; 0 if daylight saving time is not in effect; negative value if status of daylight saving time is unknown.Despite the near-touchdown spread, this week has seen the most people picking against the Eagles since they went into Carolina in Week 6 as a three-point underdog, a game they won by five points.
By comparison, the Birds were also six-point favorites the last time they played on the road (Week 11 at Dallas), and almost nobody outside of Cowboys fans was picking against them.
With a win, the Birds will win 10 straight in a single season for the first time in franchise history. The question is, will they. You can check that out, here. This is not the same Seahawks team you remember over the last five years. The Seahawks can no longer bulldoze defenses with Marshawn Lynch, and they're missing both Richard Sherman and Kam Chancellor on the back end defensively. I think this is the next in line of teams that gets exposed by a superior Eagles roster. Full disclosure: I do not enjoy watching the Eagles try to handle Russell Wilson.
Without Richard Sherman, I think the Seahawks are vulnerable enough for the Eagles to take down. They lost to the dang Redskins, guys.
These are the games they brought Jay Ajayi in for. Expect Doug Pederson to go to Ajayi and Blount early and often, and for Philadelphia to grind out a tough victory. I'm not going to spend a lot of time with analysis here, because the more I think about this game, the closer I come to second-guessing my prediction.
It's just one of those games. The last time I felt like this was Week 6 against the Panthers. I picked a 27-23 Eagles' win then too, and they won 28-23. Also, the Redskins won in Seattle just a few weeks ago and, I mean, did you watch that game on Thursday night. Like us on Facebook: PhillyVoice Sports Matt Mullin googletag.
All rights reserved Facebook Twitter Google Plus LinkedIn Instagram Pinterest googletag. MORE ON THE EAGLESEagles sign WR Alshon Jeffery to four-year extensionEagles-Seahawks injury report, with analysisRounding up the experts' picks for Eagles-SeahawksSeahawks haven't been this big of a home dog since. Mailbag: Vikings would win most tiebreakers with EaglesBut not everyone believes that the Birds will improve to 11-1 on Sunday night. Rams Preview: Week 2 betting lines, predictions, analysis, how to watch USA TODAY Sports Redskins vs.
Chicago The Washington Redskins are coming off a Week 1 loss to the Eagles at home, and now have to make a cross country trip to Los Angeles to face former offensive coordinator Sean McVay and the Rams. The Redskins spent the week answering questions about a number of issues, most very similar to what we saw during the preseason, which definitely worries some people. Here are some of the biggest storylines and predictions from CSN Redskins insiders JP Finlay and Rich Tandler for Sunday.
RELATED: WEEK 1 NFL POWER RANKINGSRadio: Redskins Radio Network, ESPN 710 AM, 100. The game is set to begin 4:25 p. Will playing their former offensive coordinator Sean McVay give them an advantage.