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Copy pathFactoryLibraryLinux.cpp
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FactoryLibraryLinux.cpp
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#include "ProcessFactory/FactoryLibrary.h"
#include "ProcessFactory/ProcessFactory.h"
#ifdef MACX
#include<sys/sysctl.h>
#include<sys/types.h>
#elif USE_GCC
#include<sys/sysinfo.h>
#endif
#ifdef USE_GCC
#include<errno.h>
#include<sys/types.h>
#include<sys/wait.h>
#include<time.h>
#include<unistd.h>
//#include<sensors/sensors.h>
#endif
#include<stdlib.h>
using namespace std;
namespace ProcessFactoryLibrary {
namespace Linux
{
static int errSz = 1024;
static char msgBuf[1024];
// for the node
int GetNumberOfFileDescriptors()
{
// man sysconf
// Get Limits: Max open files allowed
//int maxFD = sysconf(_SC_OPEN_MAX);
//cout << "Open fd max: " << maxFD << endl;
// Try: STREAM_MAX maximum number of streams that a process can have open at any time.
//int maxStreams = sysconf(_SC_STREAM_MAX);
//cout << "Open streams max: " << FOPEN_MAX << " == " << maxStreams << "?" << endl;
// The number of files presently opened on the node
// Three numbers: <number of allocated file handles> <number of free file handles> <maximum number of file handles>
// /proc/sys/fs/file-nr
int numFd = 0;
stringstream directory;
directory << "/proc/sys/fs/file-nr";
ifstream cmdFile(directory.str().c_str());
if(cmdFile.is_open())
{
char line[4096];
if(cmdFile.eof() == false)
{
cmdFile.getline(line, 4096);
if(line != NULL)
{
//cerr << line << endl;
vector<string> delimLine = SplitString(string(line),"\t");
//for(vector<string>::iterator it = delimLine.begin(), it_end = delimLine.end(); it != it_end; ++it)
// cerr << *it << ":";
//cerr << endl;
if(delimLine.size() > 2)
{
//cerr << "NumFd: " << atoi(delimLine[0].c_str()) - atoi(delimLine[1].c_str()) << endl;
numFd = max(0, atoi(delimLine[0].c_str()) - atoi(delimLine[1].c_str()));
}
}
}
cmdFile.close();
}
//cout << "Linux::GetNumberOfFileDescriptors(): Number of /proc/sys/fs/file-nr " << numFd << endl;
return numFd;
}
int GetNumberOfSockets()
{
// Number of sockets open:
// /proc/net/sockstat
int numSockets = 0;
stringstream directory;
directory << "/proc/net/sockstat";
ifstream cmdFile(directory.str().c_str());
if(cmdFile.is_open())
{
char line[4096];
while(cmdFile.eof() == false)
{
cmdFile.getline(line, 4096);
if(line == NULL) continue;
vector<string> delimLine = SplitString(string(line)," ");
if(delimLine.size() < 3) continue;
if(strncmp(delimLine[0].c_str(), "TCP", 3) == 0)
numSockets += atoi(delimLine[2].c_str());
else if(strncmp(delimLine[0].c_str(), "UDP", 3) == 0)
numSockets += atoi(delimLine[2].c_str());
}
cmdFile.close();
}
//cout << "Linux::GetNumberOfSockets(): Number of sockets " << numSockets << endl;
return numSockets;
}
int GetNumberOfThreads(int pid)
{
// get current thread id;
//int getttid();
stringstream directory;
directory << "/proc/" << pid << "/stat";
ifstream cmdFile(((directory).str()).c_str());
if(!cmdFile.is_open()) return 0;
stringbuf line;
cmdFile.get(line);
vector<string> delimLine = SplitString(string(line.str()), " ");
if(delimLine.size() < 19) return 0;
int numThreads = atoi(delimLine[19].c_str());
cmdFile.close();
//cout << "Linux::GetNumberOfThreads(" << pid << "): Number of threads " << numThreads << endl;
return numThreads;
}
#if 0
int GetNumberOfOpenFileDescriptors(int pid)
{
// Example:
//# ls /proc/12489/fd | wc -l
//# 106
stringstream command;
command << "ls " << "/proc/" << pid << "/fd | wc -l";
int numFd = 0;
FILE *file = createProcessPopen(command.str());
{
static bool showErrorMsg;
if(file == NULL)
{
if(showErrorMsg)
cout << "GetNumberOfOpenFileDescriptors(" << pid << "): ERROR: " << STRERROR_S(errno, msgBuf, errSz) << " popen() failed for cmd: " << command.str() << endl;
showErrorMsg = false;
return numFd;
}
else showErrorMsg = true;
}
int fd = fileno(file);
time_t start_time = time(NULL);
while(true)
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
struct timeval tv = {0,100000};
int ret = select(fd+1, &rfds, NULL, NULL, &tv);
if(ret <= -1)
{
cout << "Linux::GetNumberOfOpenFileDescriptors(pid): Select Error: " << STRERROR_S(errno, msgBuf, errSz) << endl;
if(errno == EBADF) break;
continue;
}
time_t end_time = time(NULL) - start_time;
if(ret == 0 || end_time >= 1)
{
cout << "GetNumberOfOpenFileDescriptors(" << pid << "): WARNING! Command: " << command.str() << " returned nothing! " << endl;
break;
}
// -- data is available --
char line[1096];
char *context = NULL;
if(fgets(line, sizeof(line), file))
{
if(line == NULL) continue;
else cerr << line << endl;
numFd = atoi(line) - 1;
break;
}
else
{
cout << "GetNumberOfOpenFileDescriptors(" << pid << "): WARNING! Could not get a line! " << strerror(errno) << endl;
break;
}
}
int ret = pclose(file);
//if(ret == -1)
// cout << "Linux::GetNumberOfFileDescriptor(): pclose(file) returned ERROR! " << STRERROR_S(errno, msgBuf, errSz) << endl;
//cout << "GetNumberOfOpenFileDescriptors(" << pid << "): Number of open file descriptors: " << numFd << endl;
return numFd;
}
#else
int GetNumberOfOpenFileDescriptors(int pid)
{
// Example:
//# ls /proc/12489/fd | wc -l
//# 106
stringstream tempFile;
tempFile << "/tmp/temp" << rand(); // << "." << Thread::GetProcessId();
stringstream command;
command << "ls " << "/proc/" << pid << "/fd | wc -l > " << tempFile.str() << " 2> /dev/null";
// NB! when signal(SIGCHLD, SIG_IGN); is defined system call returns -1 no matter what!
int ret = system(command.str().c_str());
//if(ret == -1)
// cout << "Linux::GetCPUTemperatures(): system returned -1 : " << strerror(errno) << endl;
int numFd = 0;
char line[4096];
ifstream infile(tempFile.str().c_str());
if(infile.is_open())
{
while(!infile.eof() && infile.is_open())
{
infile.getline(line, 4096);
if(line == NULL) continue;
//if(infile.gcount() <= 0) break;
numFd = atoi(line);
break;
}
infile.close();
}
remove(tempFile.str().c_str());
//if(numFd == 0)
// cout << "GetNumberOfOpenFileDescriptors(" << pid << "): WARNING! Could not get a line! " << strerror(errno) << endl;
//else
// cout << "GetNumberOfOpenFileDescriptors(" << pid << "): Number of open file descriptors: " << numFd << endl;
return numFd;
}
#endif
#if 0
map<string, int> GetCPUTemperatures()
{
HostResources::MapStringInt32 mapCPUTemperature;
sensors_chip_name chip_name;
//int nr = 0;
for(int nr = 0; nr < 10; nr++)
{
const sensors_chip_name *chip_names = sensors_get_detected_chips(NULL, &nr);
if(chip_names == NULL)
{
cout << "Chip name is NULL!!" << endl;
}
else
{
//sensors_feature_type type;
double chipTemp = 0;
int ret = sensors_get_value(chip_names, 2, &chipTemp);
cout << "Name = " << chip_names->prefix << " temp value " << chipTemp << endl;
}
}
return mapCPUTemperature;
}
#elif 0
map<string, int> GetCPUTemperatures()
{
stringstream command;
command << "sensors";
HostResources::MapStringInt32 mapTemperature;
FILE *file = createProcessPopen(command.str());
{
static bool showErrorMsg;
if(file == NULL)
{
if(showErrorMsg)
cout << "Linux::GetCPUTemperatures(): ERROR: " << STRERROR_S(errno, msgBuf, errSz) << " popen() failed for cmd: " << command.str() << endl;
showErrorMsg = false;
return mapTemperature;
}
else showErrorMsg = true;
}
int fd = fileno(file);
time_t start_time = time(NULL);
while(true)
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
struct timeval tv = {0,100000};
int ret = select(fd+1, &rfds, NULL, NULL, &tv);
if(ret <= -1)
{
cout << "Linux::GetCPUTemperatures(): Select Error: " << STRERROR_S(errno, msgBuf, errSz) << endl;
if(errno == EBADF) break;
continue;
}
time_t end_time = time(NULL) - start_time;
if(ret == 0 || end_time >= 1)
{
cout << "Linux::GetCPUTemperatures(): WARNING! Command: " << command.str() << " returned no temperatures! " << endl;
break;
}
// -- data is available --
char line[8096];
char *context = NULL;
assert(sizeof(line) >= 8096);
if(fgets(line, sizeof(line), file))
{
if(line == NULL) continue;
//else cerr << line << endl;
char *coreId = STRTOK_S(line, ":", &context);
if(coreId == NULL) continue;
//cout << "Core Id :" << coreId << endl;
if(strncmp(coreId, "Core ", 5) == 0)
{
char *temp = STRTOK_S(NULL, " C", &context);
if(temp == NULL) continue;
//cout << "Temperature(ascii) " << temp << endl;
int iTemp = atoi(temp);
//cout << "Core Id : " << coreId << " Temperature(int) " << iTemp << endl;
mapTemperature[coreId] = iTemp; //.insert(pair<string, int>(string(coreId),iTemp));
}
else if(strncmp(coreId, "No sensors found!", 15) == 0)
{
//IWARNING() << " No sensors found!" ;
break;
}
}
else
{
//IWARNING() << " Could not get a line! " << strerror(errno);
break;
}
}
int ret = pclose(file);
//if(ret == -1)
// cout << "Linux::GetCPUTemperatures(): pclose(file) returned ERROR! " << STRERROR_S(errno, msgBuf, errSz) << endl;
return mapTemperature;
}
#else
map<string, int> GetCPUTemperatures()
{
stringstream tempFile;
tempFile << "/tmp/temp" << rand(); // << "." << Thread::GetProcessId();
stringstream command;
command << "sensors > " << tempFile.str() << " 2> /dev/null"; //" 2>&1" ;
// -- debug --
//com::kongsberg::SensorSystems::ProcessFactory::ResourceMonitor::initTemperatureString();
//ofstream ofile(tempFile.str().c_str());
//assert(ofile.is_open());
//ofile << com::kongsberg::SensorSystems::ProcessFactory::ResourceMonitor::tempString.str();
//ofile.close();
//cout << "Created temp file : " << tempFile.str() << endl;
// -- end debug --
// NB! when signal(SIGCHLD, SIG_IGN); is defined system call returns -1 no matter what!
int ret = system(command.str().c_str());
//if(ret == -1)
// cerr << "Linux::GetCPUTemperatures(): system returned -1 : " << strerror(errno) << endl;
HostResources::MapStringInt32 mapTemperature;
char line[4096];
char *context = NULL;
ifstream infile(tempFile.str().c_str());
if(infile.is_open())
{
while(!infile.eof() && infile.is_open())
{
infile.getline(line, 4096);
if(line == NULL) continue;
//if(infile.gcount() <= 0) break;
char *chCoreId = STRTOK_S(line, ":", &context);
if(chCoreId == NULL) continue;
string coreId(chCoreId);
//cout << "Core Id :" << coreId << endl;
if(strncmp(coreId.c_str(), "Core ", 5) == 0)
{
char *temp = STRTOK_S(NULL, " C", &context);
if(temp == NULL) continue;
//cout << "Temperature(ascii) " << temp << endl;
int iTemp = atoi(temp);
//cout << coreId << " Temperature(int) " << iTemp << endl;
mapTemperature[coreId] = iTemp;
}
else if(strncmp(coreId.c_str(), "temp", 4) == 0)
{
char *temp = STRTOK_S(NULL, "C", &context);
if(temp == NULL) continue;
//IDEBUG() << temp ;
int iTemp = atoi(temp);
mapTemperature[coreId] = iTemp;
}
else if(strncmp(coreId.c_str(), "No sensors found!", 15) == 0)
{
//IWARNING() << " No sensors found!" ;
break;
}
//cerr << "." ;
}
infile.close();
}
else // -> tempFile not found!
{
static bool showErrorMsg;
if(showErrorMsg)
IDEBUG() << " ERROR: " << STRERROR_S(errno, msgBuf, errSz) << " system(" << command.str() << ") failed! Is lm-sensors 'sensors' installed?";
showErrorMsg = false;
return mapTemperature;
}
remove(tempFile.str().c_str());
//cout << "New temps : " << mapTemperature << endl;
return mapTemperature;
}
#endif
vector<string> SplitString(string str, string delimiters)
{
vector<string> tokens;
// Skip delimiters at beginning.
string::size_type lastPos = str.find_first_not_of(delimiters, 0);
// Find first "non-delimiter".
string::size_type pos = str.find_first_of(delimiters, lastPos);
while (string::npos != pos || string::npos != lastPos)
{
// Found a token, add it to the vector.
tokens.push_back(str.substr(lastPos, pos - lastPos));
// Skip delimiters. Note the "not_of"
lastPos = str.find_first_not_of(delimiters, pos);
// Find next "non-delimiter"
pos = str.find_first_of(delimiters, lastPos);
}
return tokens;
}
vector<int> findChildZombies(const int &parentProcessId)
{
vector<int> childZombies;
#ifdef USE_GCC
stringstream stream;
stream << "ps ax -o ppid,pid,stat | grep " << parentProcessId << " | grep Z";
FILE *file = createProcessPopen(stream.str());
{
static bool showErrorMsg;
if(file == NULL)
{
if(showErrorMsg)
IDEBUG() << " ERROR: " << STRERROR_S(errno, msgBuf, errSz) << " popen() failed " << stream.str();
showErrorMsg = false;
return childZombies;
}
else showErrorMsg = true;
}
stringstream parentProcessIdStr;
parentProcessIdStr << parentProcessId;
int fd = fileno(file);
time_t start_time = time(NULL);
while(true)
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
struct timeval tv = {0,100000};
int ret = select(fd+1, &rfds, NULL, NULL, &tv);
if(ret <= -1)
{
IDEBUG() << " Select Error: " << STRERROR_S(errno, msgBuf, errSz);
if(errno == EBADF) break;
continue;
}
time_t end_time = time(NULL) - start_time;
if(ret == 0 || end_time >= 1)
{
//cout << "Linux::findChildZombies(ppid): ERROR! Command: " << stream.str() << " returned no child process id! " << endl;
break;
}
// -- data is available --
char line[8096];
char *context = NULL;
if(fgets(line, sizeof(line), file))
{
if(line == NULL) continue;
vector<string> delimLine = SplitString(string(line), " ");
if(delimLine.size() <= 0) continue;
if(strcmp(delimLine[0].c_str(), parentProcessIdStr.str().c_str()) == 0)
{
int childPid = atoi(delimLine[1].c_str());
childZombies.push_back(childPid);
}
}
else
{
//IWARNING() << " Could not get a line! ";
break;
}
}
int ret = pclose(file);
//if(ret == -1)
// cout << "Linux::findChildZombies(ppid): pclose(file) returned ERROR! " << STRERROR_S(errno, msgBuf, errSz) << endl;
#endif
return childZombies;
}
#if 1
int findChildProcessId(const int &parentProcessId, const string &executableName)
{
int childProcessId = -1;
int maximumPid = max(65000, parentProcessId);
ifstream maxPidFile("/proc/sys/kernel/pid_max");
if(maxPidFile.is_open())
{
stringstream stream;
stream << maxPidFile.rdbuf();
if(stream.str().empty() == false)
{
maximumPid = atoi(stream.str().c_str());
if(maximumPid < 32768 || maximumPid > 65000)
maximumPid = max(65000, parentProcessId);
//else cerr << "Linux::findChildProcessId(): Found maximumPid : " << maximumPid << endl;
}
maxPidFile.close();
}
for(int pid = parentProcessId+1; pid < maximumPid; pid++)
{
stringstream directory;
directory << "/proc/" << pid << "/stat";
ifstream cmdFile(((directory).str()).c_str());
if(!cmdFile.is_open()) continue;
stringbuf line;
cmdFile.get(line);
vector<string> delimLine = SplitString(string(line.str()), " ");
if(delimLine.size() < 4) continue;
int parentId = atoi(delimLine[3].c_str());
if(parentId == parentProcessId)
{
//cerr << "(Linux::findChildProcessId(),240): Found " << parentProcessId << "'s child pid " << pid << endl;
childProcessId = pid;
break;
}
cmdFile.close();
}
// backup: rarely happens. But, happens when pid wraps around max-pid.
if(childProcessId == -1)
{
for(int pid = 1; pid < parentProcessId; pid++)
{
stringstream directory;
directory << "/proc/" << pid << "/stat";
ifstream cmdFile(((directory).str()).c_str());
if(!cmdFile.is_open()) continue;
stringbuf line;
cmdFile.get(line);
vector<string> delimLine = SplitString(string(line.str()), " ");
if(delimLine.size() < 4) continue;
int parentId = atoi(delimLine[3].c_str());
if(parentId == parentProcessId)
{
//cerr << "(Linux::findChildProcessId(),267): Found " << parentProcessId << "'s child pid " << pid << endl;
childProcessId = pid;
break;
}
cmdFile.close();
}
}
// failsafe: return parent id if all fails!
if(childProcessId == -1)
{
cout << "Linux::findChildProcessId(ppid, exec): WARNING! Could not find process id for " << executableName << "! Using parent xterm's pid!" << endl;
return parentProcessId;
}
return childProcessId;
}
#else
/*
int findChildProcessId(const int &parentProcessId, const string &executableName)
{
#ifdef USE_GCC
stringstream stream;
stream << "ps -o ppid,pid,command ax | grep " << parentProcessId ;
FILE *file = createProcessPopen(stream.str());
{
static bool showErrorMsg;
if(file == NULL)
{
if(showErrorMsg)
IDEBUG() << " ERROR: " << STRERROR_S(errno, msgBuf, errSz) << " popen() failed " << stream.str();
showErrorMsg = false;
return parentProcessId;
}
else showErrorMsg = true;
}
int childProcessId = -1;
int fd = fileno(file);
time_t start_time = time(NULL);
while(childProcessId == -1)
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
struct timeval tv = {0,100000};
int ret = select(fd+1, &rfds, NULL, NULL, &tv);
if(ret <= -1)
{
IDEBUG() << " Select Error: " << STRERROR_S(errno, msgBuf, errSz);
if(errno == EBADF) break;
continue;
}
time_t end_time = time(NULL) - start_time;
if(ret == 0 || end_time >= 1)
{
cout << "Linux::findChildProcessId(ppid, exec): Timeout! " << end_time << " Command: " << stream.str() << " returned no child process id! " << endl;
break;
}
// -- data is available --
char line[8096];
char *context = NULL;
if(fgets(line, sizeof(line), file))
{
if(line == NULL) continue;
//cout << line << endl;
vector<string> delimLine = SplitString(string(line), " ");
if(delimLine.size() <= 0) continue;
stringstream parentProcessIdStr;
parentProcessIdStr << parentProcessId;
if(strcmp(delimLine[0].c_str(), parentProcessIdStr.str().c_str()) == 0)
{
if(executableName.size() > 0)
{
if(strncmp(executableName.c_str(), line, executableName.size()) == 0)
{
IDEBUG() << " Exeuctable " << line << " == " << executableName;
childProcessId = atoi(delimLine[1].c_str());
break;
}
else
{
IDEBUG() << " " << executableName << " != " << line;
}
//}
}
else
{
childProcessId = atoi(delimLine[1].c_str());
break;
}
}
}
}
int ret = pclose(file);
//if(ret == -1)
// cout << "Linux::findChildProcessId(ppid, exec): pclose(file) returned ERROR! " << STRERROR_S(errno, msgBuf, errSz) << endl;
if(childProcessId <= -1)
{
//cout << "Linux::findChildProcessId(ppid, exec): ERROR! Could not find child process id!" << endl;
return parentProcessId;
}
return childProcessId;
#else
return parentProcessId;
#endif
}*/
#endif
// -------------------------------------------------------
// read data from a file descriptor
// -------------------------------------------------------
#ifdef USE_GCC
int readProcessIdFromFD(FILE *file)
{
if(file == NULL)
{
IDEBUG() << "ERROR! file == NULL ";
return -1;
}
int fd = fileno(file);
time_t start_time = time(NULL);
while(true)
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
struct timeval tv = {4,0};
int ret = select(fd+1, &rfds, NULL, NULL, &tv);
if(ret <= -1)
{
IDEBUG() << " Select Error: " << STRERROR_S(errno, msgBuf, errSz);
if(errno == EBADF) break;
continue;
}
time_t end_time = time(NULL) - start_time;
if(ret == 0 || end_time >= 5)
{
IDEBUG() << " Select timed out with no process id read! " << end_time;
break;
}
// -- data is available --
char line[8192];
char *context = NULL;
if(fgets(line, sizeof(line), file))
{
IDEBUG() << line;
char *c = STRTOK_S(line, " ", &context);
if(c == NULL) continue;
while(c != NULL)
{
if(strcmp(c, COMPONENT_PROCESS_ID) == 0)
{
char *tok = STRTOK_S(NULL, " ", &context);
return atoi(tok);
}
c = STRTOK_S(NULL, " ", &context);
}
}
}
return -1;
}
#endif
// -------------------------------------------------------
// get process or host resources
// -------------------------------------------------------
bool getProcessResources(int pid, HostResources &res)
{
#ifdef USE_GCC
stringstream directory;
directory << "/proc/" << pid ;
ifstream procFile(((directory).str()).c_str());
if(!procFile.is_open())
{
//cout << "FactoryLibraryLinux::getProcessResources(pid): Couldn't find process id : " << pid << endl;
return false;
}
procFile.close();
directory << "/stat";
ifstream cmdFile(directory.str().c_str());
if(cmdFile.is_open())
{
if(!cmdFile.eof())
{
stringbuf line;
cmdFile.get(line);
vector<string> delimLine = SplitString(string(line.str()), " ");
if(delimLine.size() >= 23)
{
res.SetResourceView(HostResources::PROCESS);
long long totalUsed = ATOLL(delimLine[13].c_str()) + ATOLL(delimLine[14].c_str());
//long long totalCPUCycles = Linux::getTotalCPUCycles();
//if(totalCPUCycles <= 0) totalCPUCycles = 1;
//int cpuUsagePercent = (int) (totalUsed/totalCPUCycles);
//cerr << "CpuUsage : " << totalUsed << "/" << totalCPUCycles << " = " << cpuUsagePercent << endl;
res.SetCpuUsage((int)totalUsed); //atoi(delimLine[13].c_str()) + atoi(delimLine[14].c_str()));
//int pageSize = getpagesize();
//if(pageSize <= 0) pageSize = 4096; // -> failsafe
//res.SetMemoryUsage(ATOLL(delimLine[23].c_str()) * pageSize);
res.SetExecutionTime(atoi(delimLine[21].c_str()));
}
}
cmdFile.close();
}
stringstream statm;
statm << "/proc/" << pid << "/statm";
ifstream fileMem(statm.str().c_str());
if(fileMem.is_open())
{
while(!fileMem.eof() && fileMem.is_open())
{
string line;
getline(fileMem, line);
if(line.size() == 0) continue;
vector<string> lineParts = SplitString(line, " ");
//cout << "Memory : " << lineParts[1] << endl;
if(lineParts.size() <= 1)
{
cout << "getProcessResources(): WARNING! Could not retrieve resident set size from /proc/pid/statm! " << endl;
continue;
}
int pageSize = getpagesize();
if(pageSize <= 0) pageSize = 4096; // -> failsafe
// -- resident set size
res.SetMemoryUsage(ATOLL(lineParts[1].c_str()) * pageSize);
break;
}
fileMem.close();
}
#endif
return true;
}
double getCPUUsagePercent(int pid, int64 &totalUsedPrev, int64 &totalCPUUsedPrev, int64 &totalCPUUsedCurr)
{
stringstream directory;
directory << "/proc/" << pid ;
ifstream procFile(((directory).str()).c_str());
if(!procFile.is_open()) return false;
procFile.close();
int64 totalUsedCurr = 0;
directory << "/stat";
ifstream cmdFile(directory.str().c_str());
if(cmdFile.is_open())
{
if(!cmdFile.eof())
{
stringbuf line;
cmdFile.get(line);
vector<string> delimLine = SplitString(string(line.str()), " ");
if(delimLine.size() >= 23)
{
totalUsedCurr = (int64) (ATOLL(delimLine[13].c_str()) + ATOLL(delimLine[14].c_str()));
//cerr << line.str() << endl;
//cerr << "Getting numbers : " << delimLine[13].c_str() << " + " << delimLine[14].c_str() << endl;
}
}
cmdFile.close();
}
int64 diff_cpu_total = totalCPUUsedCurr - totalCPUUsedPrev;
if(diff_cpu_total <= 0) diff_cpu_total = 1;
int64 diff_pid_total = (totalUsedCurr - totalUsedPrev);
double usageCPUPercent = 100 * (double)((double)diff_pid_total/(double)diff_cpu_total);
//cerr << "diff_pid_total = " << totalUsedCurr << " - " << totalUsedPrev << endl;
//cerr << "diff_cpu_total = " << totalCPUUsedCurr << " - " << totalCPUUsedPrev << endl;
//cerr << "Total CPU: " << diff_pid_total << "/" << diff_cpu_total << " = " << usageCPUPercent << endl;
totalUsedPrev = totalUsedCurr;
return usageCPUPercent;
}
bool getDiskPartitions(vector<string> &vectorPartitions)
{
// get partition name
ifstream partFile("/proc/partitions");
if(!partFile.is_open())
{
//cout << "getDiskTraffic(): ERROR! partition file is not found! " << STRERROR_S(errno, msgBuf, errSz) << endl;
return false;
}
//cout << "Partitions: " ;
while(!partFile.eof() && partFile.is_open())
{
string line;
getline(partFile, line);
if(line.size() == 0) continue;
vector<string> lineParts = SplitString(line, " ");
if(lineParts[3] == "name") continue;
//cout << lineParts[3] << " " ;
vectorPartitions.push_back(lineParts[3]);
}
partFile.close();
//cout << endl;
return true;
}
bool getDiskTraffic(int monitorInterval, vector<string> &vectorPartitions, MetricStateWrapper32 &diskTransfer, MetricStateWrapper32 &diskRead, MetricStateWrapper32 &diskWrite)
{
if(vectorPartitions.empty())
{
bool ret = getDiskPartitions(vectorPartitions);
if(ret == false)
{
//cout << "getDiskTraffic(): ERROR! Could not identify disk partitions! " << endl;
return false;
}
}
ifstream diskStats("/proc/diskstats");
if(!diskStats.is_open())
{
//cout << "getDiskTraffic(): ERROR! Could not find /proc/diskstats : " << STRERROR_S(errno, msgBuf, errSz) << endl;
return false;
}
while(!diskStats.eof() && diskStats.is_open())
{
string line;
getline(diskStats, line);
if(line.size() == 0) continue;
vector<string> lineParts = SplitString(line, " ");
bool foundPart = false;
string partName = lineParts[2];
for(vector<string>::iterator it = vectorPartitions.begin(), it_end = vectorPartitions.end(); it != it_end; ++it)
if(*it == partName)
{
foundPart = true;
break;
}
if(foundPart == false) continue;