Description: Design and implementation of Unix " time" command. " Mytime" command accepts command line parameters to run the program, create a separate process to run the program, and record the running time. In the Windows implementation: • Use the CreateProcess () to create a process • Use WaitForSingleObject () between " mytime" command and the newly created process synchronization • Call GetSystemTime () to get the time realized under Linux: • Use fork ()/End execv () to create a process to run the program • Use wait () to wait for the newly created process • call gettimeofday () to get the time mytime usage: $ mytime.exe program1
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.\t1
.\..\Debug
.\..\.....\t1.exe
.\..\.....\t1.ilk
.\..\.....\t1.pdb
.\..\.....\test1.exe
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.\..\t1.v14.suo
.\..\..\Debug
.\..\..\.....\Mytime.obj
.\..\..\.....\t1.log
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.\..\..\.....\.......\CL.read.1.tlog
.\..\..\.....\.......\CL.write.1.tlog
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.\test1
.\.....\Debug
.\.....\.....\test1.exe
.\.....\.....\test1.ilk
.\.....\.....\test1.pdb
.\.....\test1
.\.....\test1.sdf
.\.....\test1.sln
.\.....\test1.v14.suo
.\.....\.....\Debug
.\.....\.....\.....\test.obj
.\.....\.....\.....\test1.log
.\.....\.....\.....\test1.tlog
.\.....\.....\.....\..........\CL.read.1.tlog
.\.....\.....\.....\..........\CL.write.1.tlog
.\.....\.....\.....\..........\link.read.1.tlog
.\.....\.....\.....\..........\link.write.1.tlog
.\.....\.....\.....\..........\test1.lastbuildstate
.\.....\.....\.....\vc140.idb
.\.....\.....\.....\vc140.pdb
.\.....\.....\test.cpp
.\.....\.....\test1.vcxproj
.\.....\.....\test1.vcxproj.filters
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