Get CPU usage and memory usage for the Windows operating system

This feature references the code for the Processhacker project.

Declaration definition

typedefstruct_uint64_delta{ULONG64 Value; ULONG64 Delta;} Uint64_delta,*Puint64_delta;typedefstruct_uintptr_delta{ulong_ptr Value; Ulong_ptr Delta;} Uintptr_delta,*Puintptr_delta;#defineInitializedelta (dltmgr) \((dltmgr)->value =0, (dltmgr)->delta =0)#defineUpdatedelta (dltmgr, newvalue) \((dltmgr)->delta = (newvalue)-(Dltmgr)Value, (dltmgr)->value = (newvalue), (Dltmgr),Delta) typedefstruct _system_performance_information{Large_integer Idleprocesstime;    Large_integer Ioreadtransfercount;    Large_integer Iowritetransfercount;    Large_integer Ioothertransfercount;    ULONG Ioreadoperationcount;    ULONG Iowriteoperationcount;    ULONG Iootheroperationcount;    ULONG availablepages;    ULONG committedpages;    ULONG Commitlimit;    ULONG peakcommitment;    ULONG Pagefaultcount;    ULONG Copyonwritecount;    ULONG Transitioncount;    ULONG Cachetransitioncount;    ULONG Demandzerocount;    ULONG Pagereadcount;    ULONG Pagereadiocount;    ULONG Cachereadcount;    ULONG Cacheiocount;    ULONG Dirtypageswritecount;    ULONG Dirtywriteiocount;    ULONG Mappedpageswritecount;    ULONG Mappedwriteiocount;    ULONG pagedpoolpages;    ULONG nonpagedpoolpages;    ULONG Pagedpoolallocs;    ULONG pagedpoolfrees;    ULONG Nonpagedpoolallocs;    ULONG nonpagedpoolfrees;    ULONG freesystemptes;    ULONG Residentsystemcodepage;    ULONG totalsystemdriverpages; ULONG TotalsysteMcodepages;    ULONG nonpagedpoollookasidehits;    ULONG pagedpoollookasidehits;    ULONG availablepagedpoolpages;    ULONG Residentsystemcachepage;    ULONG Residentpagedpoolpage;    ULONG Residentsystemdriverpage;    ULONG ccfastreadnowait;    ULONG ccfastreadwait;    ULONG Ccfastreadresourcemiss;    ULONG ccfastreadnotpossible;    ULONG ccfastmdlreadnowait;    ULONG ccfastmdlreadwait;    ULONG Ccfastmdlreadresourcemiss;    ULONG ccfastmdlreadnotpossible;    ULONG ccmapdatanowait;    ULONG ccmapdatawait;    ULONG Ccmapdatanowaitmiss;    ULONG Ccmapdatawaitmiss;    ULONG Ccpinmappeddatacount;    ULONG ccpinreadnowait;    ULONG ccpinreadwait;    ULONG Ccpinreadnowaitmiss;    ULONG Ccpinreadwaitmiss;    ULONG cccopyreadnowait;    ULONG cccopyreadwait;    ULONG Cccopyreadnowaitmiss;    ULONG Cccopyreadwaitmiss;    ULONG ccmdlreadnowait;    ULONG ccmdlreadwait;    ULONG Ccmdlreadnowaitmiss;    ULONG Ccmdlreadwaitmiss;    ULONG Ccreadaheadios;    ULONG Cclazywriteios; ULONG CclazywritepAges    ULONG ccdataflushes;    ULONG ccdatapages;    ULONG contextswitches;    ULONG Firstleveltbfills;    ULONG Secondleveltbfills; ULONG Systemcalls;}  System_performance_information,*Psystem_performance_information;typedefstruct_system_basic_information{ULONG Reserved;    ULONG timerresolution;    ULONG PageSize;    ULONG numberofphysicalpages;    ULONG Lowestphysicalpagenumber;    ULONG Highestphysicalpagenumber;    ULONG allocationgranularity;    ULONG_PTR Minimumusermodeaddress;    ULONG_PTR Maximumusermodeaddress;    ULONG_PTR Activeprocessorsaffinitymask; CChar NumberOfProcessors;} System_basic_information,*psystem_basic_information;

Referencing Lib Files

The project needs to reference the Ntdll.lib file, which can be found from the Processhacker project.

Get operating System CPU utilization

ULONG64 Total_time =0; ULONG64 Sys_time=0;StaticSystem_processor_performance_information cpuinformation[1024x768];Staticsystem_info Sys_info;StaticUint64_delta Cpu_kernel_delta;StaticUint64_delta Cpu_user_delta;StaticUint64_delta Cpu_idle_delta;Staticsystem_processor_performance_information Cpu_totals;memset (&cpu_totals,0,sizeof(system_processor_performance_information)); GetSystemInfo (&sys_info); NtQuerySystemInformation (Systemprocessorperformanceinformation,&Cpuinformation,sizeof(system_processor_performance_information) *(ULONG) sys_info.dwnumberofprocessors, NULL); for(inti =0; I < (int) Sys_info.dwnumberofprocessors; i++) {system_processor_performance_information& cpu_info =Cpuinformation[i]; //Kerneltime includes idle time.Longlong dpc_time = Cpu_info. reserved1[0].    QuadPart; Longlong Interrupt_time=Cpu_info. Reserved1[i].    QuadPart; Cpu_info. Kerneltime.quadpart-=Cpu_info.    Idletime.quadpart; Cpu_info. Kerneltime.quadpart+ = Dpc_time +Interrupt_time; Cpu_totals. reserved1[0]. QuadPart + =Dpc_time; Cpu_totals. Idletime.quadpart+=Cpu_info.    Idletime.quadpart; Cpu_totals. Reserved2+=Cpu_info.    Reserved2; Cpu_totals. reserved1[1]. QuadPart + = Cpu_info. reserved1[1].    QuadPart; Cpu_totals. Kerneltime.quadpart+=Cpu_info.    Kerneltime.quadpart; Cpu_totals. Usertime.quadpart+=Cpu_info. Usertime.quadpart;} Updatedelta (&Cpu_kernel_delta, Cpu_totals. Kerneltime.quadpart); Updatedelta (&Cpu_user_delta, Cpu_totals. Usertime.quadpart); Updatedelta (&Cpu_idle_delta, Cpu_totals. Idletime.quadpart); Total_time= Cpu_kernel_delta. Delta + Cpu_user_delta. Delta +Cpu_idle_delta. Delta;sys_time= Cpu_kernel_delta. Delta +Cpu_user_delta. Delta;if(total_time) {returnSys_time *100.0/Total_time;}Else{    return 0.0;}

Get operating system memory size

Staticsystem_basic_information System_basic_info;Static Long LongMem_size =0;if(Mem_size! =0)    returnmem_size;StaticSystem_info Sys_info; GetSystemInfo (&sys_info); NtQuerySystemInformation (Systembasicinformation,&System_basic_info,sizeof(system_basic_information), NULL); Mem_size=System_basic_info. Numberofphysicalpages;mem_size*=sys_info.dwpagesize;mem_size/= (1024x768*1024x768);//MBreturnMem_size;

Get Operating system memory utilization

Staticsystem_performance_information Perf_info;StaticSystem_info Sys_info; GetSystemInfo (&sys_info); NtQuerySystemInformation (Systemperformanceinformation,&Perf_info,sizeof(system_performance_information), NULL);Long LongAvailable_size =Perf_info. Availablepages;available_size*=sys_info.dwpagesize;available_size/= (1024x768*1024x768);//MBLong LongMem_size =sys_mem_size ();if(Mem_size! =0){    return(mem_size-available_size) *100.0/mem_size;}Else{    return 0.0;}

Get CPU usage and memory usage for the Windows operating system