I'm writing a process explorer project.
I can get some Information about processes using Win32 Tool Help Snapshot.
but I can't calculate the amount of CPU usage of each process.
It's a C Window Console Application.
我正在编写一个流程资源管理器项目。我可以使用Win32 Tool Help Snapshot获取有关进程的一些信息。但我无法计算每个进程的CPU使用量。这是一个C Window控制台应用程序。
1 个解决方案
#1
0
Maybe the ISO C standardized clock() function does what you need.
也许ISO C标准化clock()函数可以满足您的需求。
$ man clock
$ man clock
NAME clock — determine processor time used
NAME时钟 - 确定使用的处理器时间
LIBRARY Standard C Library (libc, -lc)
LIBRARY标准C库(libc,-lc)
SYNOPSIS #include < time.h>
大纲#include
clock_t clock(void);DESCRIPTION The clock() function determines the amount of processor time used since the invocation of the calling process, measured in CLOCKS_PER_SECs of a second.
描述clock()函数确定自调用调用进程以来使用的处理器时间量,以一秒钟的CLOCKS_PER_SEC为单位进行测量。
RETURN VALUES The clock() function returns the amount of time used unless an error occurs, in which case the return value is -1.
返回值clock()函数返回使用的时间量,除非发生错误,在这种情况下返回值为-1。
You would call it once at the start of main(), save the result and later on compute (clock() - result)/CLOCKS_PER_SEC (beware of rounding for integral division!).
你可以在main()的开头调用它一次,保存结果,然后保存在compute(clock() - result)/ CLOCKS_PER_SEC(注意整数除法的舍入!)。
#1
0
Maybe the ISO C standardized clock() function does what you need.
也许ISO C标准化clock()函数可以满足您的需求。
$ man clock
$ man clock
NAME clock — determine processor time used
NAME时钟 - 确定使用的处理器时间
LIBRARY Standard C Library (libc, -lc)
LIBRARY标准C库(libc,-lc)
SYNOPSIS #include < time.h>
大纲#include
clock_t clock(void);DESCRIPTION The clock() function determines the amount of processor time used since the invocation of the calling process, measured in CLOCKS_PER_SECs of a second.
描述clock()函数确定自调用调用进程以来使用的处理器时间量,以一秒钟的CLOCKS_PER_SEC为单位进行测量。
RETURN VALUES The clock() function returns the amount of time used unless an error occurs, in which case the return value is -1.
返回值clock()函数返回使用的时间量,除非发生错误,在这种情况下返回值为-1。
You would call it once at the start of main(), save the result and later on compute (clock() - result)/CLOCKS_PER_SEC (beware of rounding for integral division!).
你可以在main()的开头调用它一次,保存结果,然后保存在compute(clock() - result)/ CLOCKS_PER_SEC(注意整数除法的舍入!)。