define microsecond

In C + +, it is often necessary to count performance information by timing, and to analyze performance bottlenecks through statistical time-consuming information, which can often be sufficient for millisecond-level time statistics, but in the case

CPU speed (MHz) and high precision latency (microsecond) (Browsing 20979 times) Victor Chen, (C ++ fans) I. High-Precision latency is the basis of CPU speed measurementWindows has a very high-precision timer in microseconds, but different systems

In the industrial production control system, there are many operations that need to be done regularly, such as: Timing display the current time, periodically refresh the progress bar on the screen, the host computer timing down the machine to send

Two global variables involved in Linux clock interrupts one is xtime, it is the TIMEVAL data structure variable, the other is the jiffies, first of all, look at the timeval structurestruct Timeval{time_t tv_sec; /***second***/susecond_t

Two global variables involved in Linux clock interrupts one is xtime, it is the TIMEVAL data structure variable, the other is the jiffies, first of all, look at the timeval structurestruct Timeval{time_t tv_sec; /***second***/susecond_t

Two global variables involved in Linux clock interrupts one is xtime, it is the TIMEVAL data structure variable, the other is the jiffies, first of all, look at the timeval structurestruct Timeval{time_t tv_sec; /***second***/susecond_t

Http://blog.csdn.net/zhaodan19861107/article/details/7428757 Using boost to get the current time is convenient and quick, and you do not need to consider cross-platform issues. 1. Output yyyymmdd [CPP] View plaincopy # Include # Define boost_

This article uses Q & A to discuss the basic concepts of time with you beforeOne, what is time?The problem is so complicated, I don't know if it's a physics, cosmology, or thermodynamics or philosophical issue, I just want to look at the concept of

DB2 Date Time function(DATE (TRIM (CHAR (dt#11y)) | | -' | | TRIM (CHAR (dt#11m)) | | ' -' | | TRIM (CHAR (dt#11d))) between date (' & StrDate1 & ') and date (' & StrDate2 & '))(Y > Y) or ((y = y) and (M > m)) or ((y = y) and (M = m) and (d >=

In the daily development process, the statistics of time functions are often used. It is often used to obtain the UTC time from January 1, 1970 to the present, however, in windows, there is no function available that can be precise to a subtle level.