QueryPerformanceCounter function - Win32 apps | Microsoft Learn
WEBFeb 22, 2024 · Retrieves the current value of the performance counter, which is a high resolution (<1us) time stamp that can be used for time-interval measurements.
c++ - How to use QueryPerformanceCounter? - Stack Overflow
WEBQueryPerformanceCounter reads a core specific cycle counter register, and if the thread of execution has been rescheduled on another core, two measurements from QueryPerformanceCounter incorporate not only elapsed time, but often a fixed, large and hard to pinpoint delta between the two cores registers.
Acquiring high-resolution time stamps - Win32 apps
WEBApr 18, 2023 · Windows provides APIs that you can use to acquire high-resolution time stamps, or measure time intervals. The primary API for native code is QueryPerformanceCounter (QPC). For device drivers, the kernel-mode API is KeQueryPerformanceCounter. For managed code, the System.Diagnostics.Stopwatch …
How to use QueryPerformanceCounter to get results in seconds?
WEBNov 15, 2014 · How to use QueryPerformanceCounter to get results in seconds? Asked 9 years, 5 months ago. Modified 3 years, 11 months ago. Viewed 5k times.
How to get ticks from QueryPerformanceCounter in C#?
WEBMar 20, 2012 · The problem with QueryPerformanceCounter is that it returns it's value in counts and the amount of counts per second is variable depending on architecture and can be found using QueryPerformanceFrequency.
c++ - QueryPerformanceCounter and weird results - Stack Overflow
WEBI want to use PerformanceCounter to measure how much time I need for some operation. I don't know much about PerformanceCounter and C++ in general. I found some code here:
High-precision timing with the QueryPerformanceCounter API …
WEBOct 7, 2000 · You should call QueryPerformanceFrequency once, at the beginning of your program, to retrieve the internal frequency of the high-res timer, that is the number of ticks it provides each second. Then you can call QueryPerformanceCounter as many times as you wish: each call returns the value of the internal counter.
High-Performance Timer in C# - CodeProject
WEBJul 25, 2002 · The first call, QueryPerformanceCounter(), queries the actual value of the high-resolution performance counter at any point. The second function, QueryPerformanceFrequency() , will return the number of counts per second that the high-resolution counter performs.
How does QueryPerformanceCounter measure time?
WEBJun 20, 2023 · The way QueryPerformanceCounter measures time has changed across revisions of the Windows operating system. What method does it use today?
Windows API Guide: QueryPerformanceCounter Function
WEBAug 26, 2000 · Information about the QueryPerformanceCounter function in the Windows API, geared towards the Visual Basic user.
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