C++ 如何从进程内部确定CPU和内存消耗?
我曾经负责从运行中的应用程序内部确定以下性能参数:C++ 如何从进程内部确定CPU和内存消耗?,c++,c,memory,cpu,C++,C,Memory,Cpu,我曾经负责从运行中的应用程序内部确定以下性能参数: 可用虚拟内存总量 当前使用的虚拟内存 我的进程当前使用的虚拟内存 可用内存总量 当前使用的RAM 我的进程当前使用的RAM %当前使用的CPU %我的进程当前使用的CPU 代码必须在Windows和Linux上运行。尽管这似乎是一项标准任务,但在手册(WIN32 API、GNU文档)以及互联网上查找必要的信息花了我好几天时间,因为有太多关于这个主题的不完整/不正确/过时的信息可以在那里找到 为了避免其他人遇到同样的麻烦,我认为最好收集所有分
- 可用虚拟内存总量
- 当前使用的虚拟内存
- 我的进程当前使用的虚拟内存
- 可用内存总量
- 当前使用的RAM
- 我的进程当前使用的RAM
- %当前使用的CPU
- %我的进程当前使用的CPU
- 总虚拟内存:
#include "windows.h" MEMORYSTATUSEX memInfo; memInfo.dwLength = sizeof(MEMORYSTATUSEX); GlobalMemoryStatusEx(&memInfo); DWORDLONG totalVirtualMem = memInfo.ullTotalPageFile;
注意:“TotalPageFile”这个名称在这里有点误导。实际上,该参数给出了“虚拟内存大小”,即交换文件的大小加上已安装的RAM#include "sys/types.h" #include "sys/sysinfo.h" struct sysinfo memInfo; sysinfo (&memInfo); long long totalVirtualMem = memInfo.totalram; //Add other values in next statement to avoid int overflow on right hand side... totalVirtualMem += memInfo.totalswap; totalVirtualMem *= memInfo.mem_unit;
- 当前使用的虚拟内存:
#include "TCHAR.h" #include "pdh.h" static PDH_HQUERY cpuQuery; static PDH_HCOUNTER cpuTotal; void init(){ PdhOpenQuery(NULL, NULL, &cpuQuery); // You can also use L"\\Processor(*)\\% Processor Time" and get individual CPU values with PdhGetFormattedCounterArray() PdhAddEnglishCounter(cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal); PdhCollectQueryData(cpuQuery); } double getCurrentValue(){ PDH_FMT_COUNTERVALUE counterVal; PdhCollectQueryData(cpuQuery); PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal); return counterVal.doubleValue; }
与“总虚拟内存”中的代码相同,然后#include "stdlib.h" #include "stdio.h" #include "string.h" static unsigned long long lastTotalUser, lastTotalUserLow, lastTotalSys, lastTotalIdle; void init(){ FILE* file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &lastTotalUser, &lastTotalUserLow, &lastTotalSys, &lastTotalIdle); fclose(file); } double getCurrentValue(){ double percent; FILE* file; unsigned long long totalUser, totalUserLow, totalSys, totalIdle, total; file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &totalUser, &totalUserLow, &totalSys, &totalIdle); fclose(file); if (totalUser < lastTotalUser || totalUserLow < lastTotalUserLow || totalSys < lastTotalSys || totalIdle < lastTotalIdle){ //Overflow detection. Just skip this value. percent = -1.0; } else{ total = (totalUser - lastTotalUser) + (totalUserLow - lastTotalUserLow) + (totalSys - lastTotalSys); percent = total; total += (totalIdle - lastTotalIdle); percent /= total; percent *= 100; } lastTotalUser = totalUser; lastTotalUserLow = totalUserLow; lastTotalSys = totalSys; lastTotalIdle = totalIdle; return percent; }
- 当前进程当前使用的虚拟内存:
#include "windows.h" #include "psapi.h" PROCESS_MEMORY_COUNTERS_EX pmc; GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)); SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
#include "windows.h" static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; static HANDLE self; void init(){ SYSTEM_INFO sysInfo; FILETIME ftime, fsys, fuser; GetSystemInfo(&sysInfo); numProcessors = sysInfo.dwNumberOfProcessors; GetSystemTimeAsFileTime(&ftime); memcpy(&lastCPU, &ftime, sizeof(FILETIME)); self = GetCurrentProcess(); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&lastSysCPU, &fsys, sizeof(FILETIME)); memcpy(&lastUserCPU, &fuser, sizeof(FILETIME)); } double getCurrentValue(){ FILETIME ftime, fsys, fuser; ULARGE_INTEGER now, sys, user; double percent; GetSystemTimeAsFileTime(&ftime); memcpy(&now, &ftime, sizeof(FILETIME)); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&sys, &fsys, sizeof(FILETIME)); memcpy(&user, &fuser, sizeof(FILETIME)); percent = (sys.QuadPart - lastSysCPU.QuadPart) + (user.QuadPart - lastUserCPU.QuadPart); percent /= (now.QuadPart - lastCPU.QuadPart); percent /= numProcessors; lastCPU = now; lastUserCPU = user; lastSysCPU = sys; return percent * 100; }
#include "stdlib.h" #include "stdio.h" #include "string.h" int parseLine(char* line){ // This assumes that a digit will be found and the line ends in " Kb". int i = strlen(line); const char* p = line; while (*p <'0' || *p > '9') p++; line[i-3] = '\0'; i = atoi(p); return i; } int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmSize:", 7) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
#include "stdlib.h" #include "stdio.h" #include "string.h" #include "sys/times.h" #include "sys/vtimes.h" static clock_t lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; void init(){ FILE* file; struct tms timeSample; char line[128]; lastCPU = times(&timeSample); lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; file = fopen("/proc/cpuinfo", "r"); numProcessors = 0; while(fgets(line, 128, file) != NULL){ if (strncmp(line, "processor", 9) == 0) numProcessors++; } fclose(file); } double getCurrentValue(){ struct tms timeSample; clock_t now; double percent; now = times(&timeSample); if (now <= lastCPU || timeSample.tms_stime < lastSysCPU || timeSample.tms_utime < lastUserCPU){ //Overflow detection. Just skip this value. percent = -1.0; } else{ percent = (timeSample.tms_stime - lastSysCPU) + (timeSample.tms_utime - lastUserCPU); percent /= (now - lastCPU); percent /= numProcessors; percent *= 100; } lastCPU = now; lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; return percent; }
- 总物理内存(RAM): 与“总虚拟内存”中的代码相同,然后
- 当前使用的物理内存:
#include "TCHAR.h" #include "pdh.h" static PDH_HQUERY cpuQuery; static PDH_HCOUNTER cpuTotal; void init(){ PdhOpenQuery(NULL, NULL, &cpuQuery); // You can also use L"\\Processor(*)\\% Processor Time" and get individual CPU values with PdhGetFormattedCounterArray() PdhAddEnglishCounter(cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal); PdhCollectQueryData(cpuQuery); } double getCurrentValue(){ PDH_FMT_COUNTERVALUE counterVal; PdhCollectQueryData(cpuQuery); PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal); return counterVal.doubleValue; }
与“总虚拟内存”中的代码相同,然后#include "stdlib.h" #include "stdio.h" #include "string.h" static unsigned long long lastTotalUser, lastTotalUserLow, lastTotalSys, lastTotalIdle; void init(){ FILE* file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &lastTotalUser, &lastTotalUserLow, &lastTotalSys, &lastTotalIdle); fclose(file); } double getCurrentValue(){ double percent; FILE* file; unsigned long long totalUser, totalUserLow, totalSys, totalIdle, total; file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &totalUser, &totalUserLow, &totalSys, &totalIdle); fclose(file); if (totalUser < lastTotalUser || totalUserLow < lastTotalUserLow || totalSys < lastTotalSys || totalIdle < lastTotalIdle){ //Overflow detection. Just skip this value. percent = -1.0; } else{ total = (totalUser - lastTotalUser) + (totalUserLow - lastTotalUserLow) + (totalSys - lastTotalSys); percent = total; total += (totalIdle - lastTotalIdle); percent /= total; percent *= 100; } lastTotalUser = totalUser; lastTotalUserLow = totalUserLow; lastTotalSys = totalSys; lastTotalIdle = totalIdle; return percent; }
- 当前进程当前使用的物理内存:
#include "windows.h" #include "psapi.h" PROCESS_MEMORY_COUNTERS_EX pmc; GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)); SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
#include "windows.h" static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; static HANDLE self; void init(){ SYSTEM_INFO sysInfo; FILETIME ftime, fsys, fuser; GetSystemInfo(&sysInfo); numProcessors = sysInfo.dwNumberOfProcessors; GetSystemTimeAsFileTime(&ftime); memcpy(&lastCPU, &ftime, sizeof(FILETIME)); self = GetCurrentProcess(); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&lastSysCPU, &fsys, sizeof(FILETIME)); memcpy(&lastUserCPU, &fuser, sizeof(FILETIME)); } double getCurrentValue(){ FILETIME ftime, fsys, fuser; ULARGE_INTEGER now, sys, user; double percent; GetSystemTimeAsFileTime(&ftime); memcpy(&now, &ftime, sizeof(FILETIME)); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&sys, &fsys, sizeof(FILETIME)); memcpy(&user, &fuser, sizeof(FILETIME)); percent = (sys.QuadPart - lastSysCPU.QuadPart) + (user.QuadPart - lastUserCPU.QuadPart); percent /= (now.QuadPart - lastCPU.QuadPart); percent /= numProcessors; lastCPU = now; lastUserCPU = user; lastSysCPU = sys; return percent * 100; }
#include "stdlib.h" #include "stdio.h" #include "string.h" int parseLine(char* line){ // This assumes that a digit will be found and the line ends in " Kb". int i = strlen(line); const char* p = line; while (*p <'0' || *p > '9') p++; line[i-3] = '\0'; i = atoi(p); return i; } int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmSize:", 7) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
与“当前进程当前使用的虚拟内存”中的代码相同,然后#include "stdlib.h" #include "stdio.h" #include "string.h" #include "sys/times.h" #include "sys/vtimes.h" static clock_t lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; void init(){ FILE* file; struct tms timeSample; char line[128]; lastCPU = times(&timeSample); lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; file = fopen("/proc/cpuinfo", "r"); numProcessors = 0; while(fgets(line, 128, file) != NULL){ if (strncmp(line, "processor", 9) == 0) numProcessors++; } fclose(file); } double getCurrentValue(){ struct tms timeSample; clock_t now; double percent; now = times(&timeSample); if (now <= lastCPU || timeSample.tms_stime < lastSysCPU || timeSample.tms_utime < lastUserCPU){ //Overflow detection. Just skip this value. percent = -1.0; } else{ percent = (timeSample.tms_stime - lastSysCPU) + (timeSample.tms_utime - lastUserCPU); percent /= (now - lastCPU); percent /= numProcessors; percent *= 100; } lastCPU = now; lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; return percent; }
- 当前使用的CPU:
#include "TCHAR.h" #include "pdh.h" static PDH_HQUERY cpuQuery; static PDH_HCOUNTER cpuTotal; void init(){ PdhOpenQuery(NULL, NULL, &cpuQuery); // You can also use L"\\Processor(*)\\% Processor Time" and get individual CPU values with PdhGetFormattedCounterArray() PdhAddEnglishCounter(cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal); PdhCollectQueryData(cpuQuery); } double getCurrentValue(){ PDH_FMT_COUNTERVALUE counterVal; PdhCollectQueryData(cpuQuery); PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal); return counterVal.doubleValue; }
#include "stdlib.h" #include "stdio.h" #include "string.h" static unsigned long long lastTotalUser, lastTotalUserLow, lastTotalSys, lastTotalIdle; void init(){ FILE* file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &lastTotalUser, &lastTotalUserLow, &lastTotalSys, &lastTotalIdle); fclose(file); } double getCurrentValue(){ double percent; FILE* file; unsigned long long totalUser, totalUserLow, totalSys, totalIdle, total; file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &totalUser, &totalUserLow, &totalSys, &totalIdle); fclose(file); if (totalUser < lastTotalUser || totalUserLow < lastTotalUserLow || totalSys < lastTotalSys || totalIdle < lastTotalIdle){ //Overflow detection. Just skip this value. percent = -1.0; } else{ total = (totalUser - lastTotalUser) + (totalUserLow - lastTotalUserLow) + (totalSys - lastTotalSys); percent = total; total += (totalIdle - lastTotalIdle); percent /= total; percent *= 100; } lastTotalUser = totalUser; lastTotalUserLow = totalUserLow; lastTotalSys = totalSys; lastTotalIdle = totalIdle; return percent; }
- 当前进程当前使用的CPU:
#include "windows.h" #include "psapi.h" PROCESS_MEMORY_COUNTERS_EX pmc; GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)); SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
#include "windows.h" static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; static HANDLE self; void init(){ SYSTEM_INFO sysInfo; FILETIME ftime, fsys, fuser; GetSystemInfo(&sysInfo); numProcessors = sysInfo.dwNumberOfProcessors; GetSystemTimeAsFileTime(&ftime); memcpy(&lastCPU, &ftime, sizeof(FILETIME)); self = GetCurrentProcess(); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&lastSysCPU, &fsys, sizeof(FILETIME)); memcpy(&lastUserCPU, &fuser, sizeof(FILETIME)); } double getCurrentValue(){ FILETIME ftime, fsys, fuser; ULARGE_INTEGER now, sys, user; double percent; GetSystemTimeAsFileTime(&ftime); memcpy(&now, &ftime, sizeof(FILETIME)); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&sys, &fsys, sizeof(FILETIME)); memcpy(&user, &fuser, sizeof(FILETIME)); percent = (sys.QuadPart - lastSysCPU.QuadPart) + (user.QuadPart - lastUserCPU.QuadPart); percent /= (now.QuadPart - lastCPU.QuadPart); percent /= numProcessors; lastCPU = now; lastUserCPU = user; lastSysCPU = sys; return percent * 100; }
#include "stdlib.h" #include "stdio.h" #include "string.h" int parseLine(char* line){ // This assumes that a digit will be found and the line ends in " Kb". int i = strlen(line); const char* p = line; while (*p <'0' || *p > '9') p++; line[i-3] = '\0'; i = atoi(p); return i; } int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmSize:", 7) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
#include "stdlib.h" #include "stdio.h" #include "string.h" #include "sys/times.h" #include "sys/vtimes.h" static clock_t lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; void init(){ FILE* file; struct tms timeSample; char line[128]; lastCPU = times(&timeSample); lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; file = fopen("/proc/cpuinfo", "r"); numProcessors = 0; while(fgets(line, 128, file) != NULL){ if (strncmp(line, "processor", 9) == 0) numProcessors++; } fclose(file); } double getCurrentValue(){ struct tms timeSample; clock_t now; double percent; now = times(&timeSample); if (now <= lastCPU || timeSample.tms_stime < lastSysCPU || timeSample.tms_utime < lastUserCPU){ //Overflow detection. Just skip this value. percent = -1.0; } else{ percent = (timeSample.tms_stime - lastSysCPU) + (timeSample.tms_utime - lastUserCPU); percent /= (now - lastCPU); percent /= numProcessors; percent *= 100; } lastCPU = now; lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; return percent; }
Linux 在Linux上,一开始似乎很明显的选择是使用POSIX API,如
getrusage()
等。我花了一些时间试图实现这一点,但从未得到有意义的值。当我最后检查内核源代码时,我发现显然这些API在Linux内核2.6中还没有完全实现
最后,我通过读取伪文件系统/proc
和内核调用的组合获得了所有值
- 总虚拟内存:
#include "windows.h" MEMORYSTATUSEX memInfo; memInfo.dwLength = sizeof(MEMORYSTATUSEX); GlobalMemoryStatusEx(&memInfo); DWORDLONG totalVirtualMem = memInfo.ullTotalPageFile;
#include "sys/types.h" #include "sys/sysinfo.h" struct sysinfo memInfo; sysinfo (&memInfo); long long totalVirtualMem = memInfo.totalram; //Add other values in next statement to avoid int overflow on right hand side... totalVirtualMem += memInfo.totalswap; totalVirtualMem *= memInfo.mem_unit;
- 当前使用的虚拟内存:
#include "TCHAR.h" #include "pdh.h" static PDH_HQUERY cpuQuery; static PDH_HCOUNTER cpuTotal; void init(){ PdhOpenQuery(NULL, NULL, &cpuQuery); // You can also use L"\\Processor(*)\\% Processor Time" and get individual CPU values with PdhGetFormattedCounterArray() PdhAddEnglishCounter(cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal); PdhCollectQueryData(cpuQuery); } double getCurrentValue(){ PDH_FMT_COUNTERVALUE counterVal; PdhCollectQueryData(cpuQuery); PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal); return counterVal.doubleValue; }
与“总虚拟内存”中的代码相同,然后#include "stdlib.h" #include "stdio.h" #include "string.h" static unsigned long long lastTotalUser, lastTotalUserLow, lastTotalSys, lastTotalIdle; void init(){ FILE* file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &lastTotalUser, &lastTotalUserLow, &lastTotalSys, &lastTotalIdle); fclose(file); } double getCurrentValue(){ double percent; FILE* file; unsigned long long totalUser, totalUserLow, totalSys, totalIdle, total; file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &totalUser, &totalUserLow, &totalSys, &totalIdle); fclose(file); if (totalUser < lastTotalUser || totalUserLow < lastTotalUserLow || totalSys < lastTotalSys || totalIdle < lastTotalIdle){ //Overflow detection. Just skip this value. percent = -1.0; } else{ total = (totalUser - lastTotalUser) + (totalUserLow - lastTotalUserLow) + (totalSys - lastTotalSys); percent = total; total += (totalIdle - lastTotalIdle); percent /= total; percent *= 100; } lastTotalUser = totalUser; lastTotalUserLow = totalUserLow; lastTotalSys = totalSys; lastTotalIdle = totalIdle; return percent; }
- 当前进程当前使用的虚拟内存:
#include "windows.h" #include "psapi.h" PROCESS_MEMORY_COUNTERS_EX pmc; GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)); SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
#include "windows.h" static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; static HANDLE self; void init(){ SYSTEM_INFO sysInfo; FILETIME ftime, fsys, fuser; GetSystemInfo(&sysInfo); numProcessors = sysInfo.dwNumberOfProcessors; GetSystemTimeAsFileTime(&ftime); memcpy(&lastCPU, &ftime, sizeof(FILETIME)); self = GetCurrentProcess(); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&lastSysCPU, &fsys, sizeof(FILETIME)); memcpy(&lastUserCPU, &fuser, sizeof(FILETIME)); } double getCurrentValue(){ FILETIME ftime, fsys, fuser; ULARGE_INTEGER now, sys, user; double percent; GetSystemTimeAsFileTime(&ftime); memcpy(&now, &ftime, sizeof(FILETIME)); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&sys, &fsys, sizeof(FILETIME)); memcpy(&user, &fuser, sizeof(FILETIME)); percent = (sys.QuadPart - lastSysCPU.QuadPart) + (user.QuadPart - lastUserCPU.QuadPart); percent /= (now.QuadPart - lastCPU.QuadPart); percent /= numProcessors; lastCPU = now; lastUserCPU = user; lastSysCPU = sys; return percent * 100; }
#include "stdlib.h" #include "stdio.h" #include "string.h" int parseLine(char* line){ // This assumes that a digit will be found and the line ends in " Kb". int i = strlen(line); const char* p = line; while (*p <'0' || *p > '9') p++; line[i-3] = '\0'; i = atoi(p); return i; } int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmSize:", 7) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
#include "stdlib.h" #include "stdio.h" #include "string.h" #include "sys/times.h" #include "sys/vtimes.h" static clock_t lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; void init(){ FILE* file; struct tms timeSample; char line[128]; lastCPU = times(&timeSample); lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; file = fopen("/proc/cpuinfo", "r"); numProcessors = 0; while(fgets(line, 128, file) != NULL){ if (strncmp(line, "processor", 9) == 0) numProcessors++; } fclose(file); } double getCurrentValue(){ struct tms timeSample; clock_t now; double percent; now = times(&timeSample); if (now <= lastCPU || timeSample.tms_stime < lastSysCPU || timeSample.tms_utime < lastUserCPU){ //Overflow detection. Just skip this value. percent = -1.0; } else{ percent = (timeSample.tms_stime - lastSysCPU) + (timeSample.tms_utime - lastUserCPU); percent /= (now - lastCPU); percent /= numProcessors; percent *= 100; } lastCPU = now; lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; return percent; }
- 当前使用的物理内存:
#include "TCHAR.h" #include "pdh.h" static PDH_HQUERY cpuQuery; static PDH_HCOUNTER cpuTotal; void init(){ PdhOpenQuery(NULL, NULL, &cpuQuery); // You can also use L"\\Processor(*)\\% Processor Time" and get individual CPU values with PdhGetFormattedCounterArray() PdhAddEnglishCounter(cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal); PdhCollectQueryData(cpuQuery); } double getCurrentValue(){ PDH_FMT_COUNTERVALUE counterVal; PdhCollectQueryData(cpuQuery); PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal); return counterVal.doubleValue; }
与“总虚拟内存”中的代码相同,然后#include "stdlib.h" #include "stdio.h" #include "string.h" static unsigned long long lastTotalUser, lastTotalUserLow, lastTotalSys, lastTotalIdle; void init(){ FILE* file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &lastTotalUser, &lastTotalUserLow, &lastTotalSys, &lastTotalIdle); fclose(file); } double getCurrentValue(){ double percent; FILE* file; unsigned long long totalUser, totalUserLow, totalSys, totalIdle, total; file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &totalUser, &totalUserLow, &totalSys, &totalIdle); fclose(file); if (totalUser < lastTotalUser || totalUserLow < lastTotalUserLow || totalSys < lastTotalSys || totalIdle < lastTotalIdle){ //Overflow detection. Just skip this value. percent = -1.0; } else{ total = (totalUser - lastTotalUser) + (totalUserLow - lastTotalUserLow) + (totalSys - lastTotalSys); percent = total; total += (totalIdle - lastTotalIdle); percent /= total; percent *= 100; } lastTotalUser = totalUser; lastTotalUserLow = totalUserLow; lastTotalSys = totalSys; lastTotalIdle = totalIdle; return percent; }
- 当前进程当前使用的物理内存:
#include "windows.h" #include "psapi.h" PROCESS_MEMORY_COUNTERS_EX pmc; GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)); SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
#include "windows.h" static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; static HANDLE self; void init(){ SYSTEM_INFO sysInfo; FILETIME ftime, fsys, fuser; GetSystemInfo(&sysInfo); numProcessors = sysInfo.dwNumberOfProcessors; GetSystemTimeAsFileTime(&ftime); memcpy(&lastCPU, &ftime, sizeof(FILETIME)); self = GetCurrentProcess(); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&lastSysCPU, &fsys, sizeof(FILETIME)); memcpy(&lastUserCPU, &fuser, sizeof(FILETIME)); } double getCurrentValue(){ FILETIME ftime, fsys, fuser; ULARGE_INTEGER now, sys, user; double percent; GetSystemTimeAsFileTime(&ftime); memcpy(&now, &ftime, sizeof(FILETIME)); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&sys, &fsys, sizeof(FILETIME)); memcpy(&user, &fuser, sizeof(FILETIME)); percent = (sys.QuadPart - lastSysCPU.QuadPart) + (user.QuadPart - lastUserCPU.QuadPart); percent /= (now.QuadPart - lastCPU.QuadPart); percent /= numProcessors; lastCPU = now; lastUserCPU = user; lastSysCPU = sys; return percent * 100; }
#include "stdlib.h" #include "stdio.h" #include "string.h" int parseLine(char* line){ // This assumes that a digit will be found and the line ends in " Kb". int i = strlen(line); const char* p = line; while (*p <'0' || *p > '9') p++; line[i-3] = '\0'; i = atoi(p); return i; } int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmSize:", 7) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
将“当前进程当前使用的虚拟内存”中的getValue()更改如下:#include "stdlib.h" #include "stdio.h" #include "string.h" #include "sys/times.h" #include "sys/vtimes.h" static clock_t lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; void init(){ FILE* file; struct tms timeSample; char line[128]; lastCPU = times(&timeSample); lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; file = fopen("/proc/cpuinfo", "r"); numProcessors = 0; while(fgets(line, 128, file) != NULL){ if (strncmp(line, "processor", 9) == 0) numProcessors++; } fclose(file); } double getCurrentValue(){ struct tms timeSample; clock_t now; double percent; now = times(&timeSample); if (now <= lastCPU || timeSample.tms_stime < lastSysCPU || timeSample.tms_utime < lastUserCPU){ //Overflow detection. Just skip this value. percent = -1.0; } else{ percent = (timeSample.tms_stime - lastSysCPU) + (timeSample.tms_utime - lastUserCPU); percent /= (now - lastCPU); percent /= numProcessors; percent *= 100; } lastCPU = now; lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; return percent; }
int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmRSS:", 6) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
- 当前使用的CPU:
#include "TCHAR.h" #include "pdh.h" static PDH_HQUERY cpuQuery; static PDH_HCOUNTER cpuTotal; void init(){ PdhOpenQuery(NULL, NULL, &cpuQuery); // You can also use L"\\Processor(*)\\% Processor Time" and get individual CPU values with PdhGetFormattedCounterArray() PdhAddEnglishCounter(cpuQuery, L"\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal); PdhCollectQueryData(cpuQuery); } double getCurrentValue(){ PDH_FMT_COUNTERVALUE counterVal; PdhCollectQueryData(cpuQuery); PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal); return counterVal.doubleValue; }
#include "stdlib.h" #include "stdio.h" #include "string.h" static unsigned long long lastTotalUser, lastTotalUserLow, lastTotalSys, lastTotalIdle; void init(){ FILE* file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &lastTotalUser, &lastTotalUserLow, &lastTotalSys, &lastTotalIdle); fclose(file); } double getCurrentValue(){ double percent; FILE* file; unsigned long long totalUser, totalUserLow, totalSys, totalIdle, total; file = fopen("/proc/stat", "r"); fscanf(file, "cpu %llu %llu %llu %llu", &totalUser, &totalUserLow, &totalSys, &totalIdle); fclose(file); if (totalUser < lastTotalUser || totalUserLow < lastTotalUserLow || totalSys < lastTotalSys || totalIdle < lastTotalIdle){ //Overflow detection. Just skip this value. percent = -1.0; } else{ total = (totalUser - lastTotalUser) + (totalUserLow - lastTotalUserLow) + (totalSys - lastTotalSys); percent = total; total += (totalIdle - lastTotalIdle); percent /= total; percent *= 100; } lastTotalUser = totalUser; lastTotalUserLow = totalUserLow; lastTotalSys = totalSys; lastTotalIdle = totalIdle; return percent; }
#包括“stdlib.h” #包括“stdio.h” #包括“string.h” 静态无符号长长lastTotalUser、lastTotalUserLow、lastTotalSys、lastTotalIdle; void init(){ FILE*FILE=fopen(“/proc/stat”,“r”); fscanf(文件,“cpu%llu%llu%llu%llu”、&lastTotalUser、&lastTotalUserLow、, &lastTotalSys和lastTotalIdle); fclose(文件); } 双getCurrentValue(){ 百分之二; 文件*文件; 无符号长-长totalUser、totalUserLow、totalSys、totalIdle、total; file=fopen(“/proc/stat”,“r”); fscanf(文件,“cpu%llu%llu%llu%llu”、&totalUser和&totalUserLow, &totalSys和totalIdle); fclose(文件); 如果(totalUser
- 当前进程当前使用的CPU:
#include "windows.h" #include "psapi.h" PROCESS_MEMORY_COUNTERS_EX pmc; GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)); SIZE_T virtualMemUsedByMe = pmc.PrivateUsage;
#include "windows.h" static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; static HANDLE self; void init(){ SYSTEM_INFO sysInfo; FILETIME ftime, fsys, fuser; GetSystemInfo(&sysInfo); numProcessors = sysInfo.dwNumberOfProcessors; GetSystemTimeAsFileTime(&ftime); memcpy(&lastCPU, &ftime, sizeof(FILETIME)); self = GetCurrentProcess(); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&lastSysCPU, &fsys, sizeof(FILETIME)); memcpy(&lastUserCPU, &fuser, sizeof(FILETIME)); } double getCurrentValue(){ FILETIME ftime, fsys, fuser; ULARGE_INTEGER now, sys, user; double percent; GetSystemTimeAsFileTime(&ftime); memcpy(&now, &ftime, sizeof(FILETIME)); GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser); memcpy(&sys, &fsys, sizeof(FILETIME)); memcpy(&user, &fuser, sizeof(FILETIME)); percent = (sys.QuadPart - lastSysCPU.QuadPart) + (user.QuadPart - lastUserCPU.QuadPart); percent /= (now.QuadPart - lastCPU.QuadPart); percent /= numProcessors; lastCPU = now; lastUserCPU = user; lastSysCPU = sys; return percent * 100; }
#include "stdlib.h" #include "stdio.h" #include "string.h" int parseLine(char* line){ // This assumes that a digit will be found and the line ends in " Kb". int i = strlen(line); const char* p = line; while (*p <'0' || *p > '9') p++; line[i-3] = '\0'; i = atoi(p); return i; } int getValue(){ //Note: this value is in KB! FILE* file = fopen("/proc/self/status", "r"); int result = -1; char line[128]; while (fgets(line, 128, file) != NULL){ if (strncmp(line, "VmSize:", 7) == 0){ result = parseLine(line); break; } } fclose(file); return result; }
#include "stdlib.h" #include "stdio.h" #include "string.h" #include "sys/times.h" #include "sys/vtimes.h" static clock_t lastCPU, lastSysCPU, lastUserCPU; static int numProcessors; void init(){ FILE* file; struct tms timeSample; char line[128]; lastCPU = times(&timeSample); lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; file = fopen("/proc/cpuinfo", "r"); numProcessors = 0; while(fgets(line, 128, file) != NULL){ if (strncmp(line, "processor", 9) == 0) numProcessors++; } fclose(file); } double getCurrentValue(){ struct tms timeSample; clock_t now; double percent; now = times(&timeSample); if (now <= lastCPU || timeSample.tms_stime < lastSysCPU || timeSample.tms_utime < lastUserCPU){ //Overflow detection. Just skip this value. percent = -1.0; } else{ percent = (timeSample.tms_stime - lastSysCPU) + (timeSample.tms_utime - lastUserCPU); percent /= (now - lastCPU); percent /= numProcessors; percent *= 100; } lastCPU = now; lastSysCPU = timeSample.tms_stime; lastUserCPU = timeSample.tms_utime; return percent; }
#包括“stdlib.h” #包括“stdio.h” #包括“string.h” #包括“sys/times.h” #包括“sys/vtimes.h” 静态时钟\u t lastCPU、lastSysCPU、lastUserCPU; 静态整数处理器; void init(){ 文件*文件; 结构tms时间样本; 字符行[128]; lastCPU=次数(&timeSample); lastSysCPU=timeSample.tms_stime; lastUserCPU=timeSample.tms_utime; file=fopen(“/proc/cpuinfo”,“r”); numProcessors=0; while(fgets(第128行,文件)!=NULL){ if(strncmp(行,“处理器”,9)==0)numProcessors++; } fclose(文件); } 双getCurrentValue(){ 结构tms时间样本; 现在开始计时; 百分之二; 现在=次数(&timeSample); 如果(现在是Linux 在Linux中,这些信息可以在/proc文件系统中找到。我不太喜欢使用的文本文件格式,因为每个Linux发行版似乎都自定义了至少一个重要的文件。快速查看“ps”的源代码可以发现混乱 但这里是你寻找信息的地方: /proc/meminfo包含了您所查找的大部分系统范围的信息。这里看起来像是在我的系统上;我想您对MemTotal,MemFr感兴趣