gettimeofday example code

C language Settimeofday () function: Setting the current timestampheader file: #include #include To define a function: int settimeofday (const struct Timeval *tv, const struct timezone); Function Description:

The definition of struct timeval structure of struct timeval structure in time.h is as follows: struct Timeval { __time_t tv_sec; /* Seconds. */ __suseconds_t tv_usec; /* microseconds. */ }; Where Tv_sec is epoch to the number of seconds to create

Unit testing is an essential and important part of a complete software development process. Writing unit tests is usually not difficult, but sometimes it's difficult to write tests because some code and features are hard to test. Therefore, it is

precise timing in microseconds Long Long l1,l2,l3; Timeval TV1; Take a Time Gettimeofday (&tv,null); L1 = tv.tv_sec*1000*1000 + tv.tv_usec; Execute some code, such as algorithm 1 ... Second time taken Gettimeofday (&tv,null); L2 = tv.tv_sec*1000*1

IOS Time Processing Do not have to do the app to deal with time, about the processing of time, there are many doorways, far from a row of API calls, get the current system time so simple. We need to understand the differences between the various

Date and time (asctimectimegettimeofdaygmtimelocaltimemktimesettimeofdaytimeasctime (expressed in string format) related functions time, ctime, gmtime, localtime header file # include & lt; time. h & gt; define the function char * ascti   Date and

  Date and Time Asctime Ctime Gettimeofday Gmtime Localtime Mktime Settimeofday Time Asctime (represents the time and date in string format) Related functions Time, ctime, gmtime, localtime Header file # Include Define functions Char * asctime

PHP uniqid function Execution Slow problem Previous time a requirement: a customer submits a simple form to create a scratch card activity H5 page that adapts to the full terminal (Pc,pad,phone), which involves the ability of a customer to generate

Time in the programThe processing of time in the program is a big problem. I plan to write a separate article to fully discuss this issue. This article is tentatively named "Date and time in the program" Chapter 2 timing and timing ", and" Date and

AsctimeCtimeGettimeofdayGmtimeLocaltimeMktimeSettimeofdayTime Asctime (represents the time and date in string format) Related functions Time, ctime, gmtime, localtime Header file # Include Define functions