| # Gaudi Framework, version v21r8 |

Home |  | Generated: 17 Mar 2010

# ProcUtils Class Reference

`#include <proc_utils.h>`

List of all members.

## Static Public Member Functions
static void | getCPUUsage (ApMon &apm, double &cpuUsage, double &cpuUsr, double &cpuSys, double &cpuNice, double &cpuIdle, int numCPUs) throw (runtime_error, procutils_error)
| Calculates the parameters cpu_usr, cpu_sys, cpu_nice, cpu_idle, cpu_usage and stores them in the output parameters cpuUsr, cpuSys,.
static void | getSwapPages (ApMon &apm, double &pagesIn, double &pagesOut, double &swapIn, double &swapOut) throw (runtime_error, procutils_error)
| Calculates the parameters pages_in, pages_out, swap_in, swap_out, cpu_usage and stores them in the output parameters pagesIn, pagesOut,.
static void | getLoad (double &load1, double &load5, double &load15, double &processes) throw (procutils_error)
| Obtains the CPU load in the last 1, 5 and 15 mins and the number of processes currently running and stores them in the variables given as parameters.
static void | getProcesses (double &processes, double states[]) throw (runtime_error)
| Obtains statistics about the total number of processes and the number of processes in each state.
static void | getSysMem (double &totalMem, double &totalSwap) throw (procutils_error)
| Obtains the total amount of memory and the total amount of swap (in KB) and stores them in the variables given as parameters.
static void | getMemUsed (double &usedMem, double &freeMem, double &usedSwap, double &freeSwap) throw (procutils_error)
| Obtains the amount of memory and of swap currently in use and stores them in the variables given as parameters.
static void | getNetworkInterfaces (int &nInterfaces, char names[][20]) throw (procutils_error)
| Obtains the names of the network interfaces (excepting the loopback one).
static void | getNetInfo (ApMon &apm, double **vNetIn, double **vNetOut, double **vNetErrs) throw (runtime_error, procutils_error)
| Computes the input/output traffic for all the network interfaces, in kilobytes per second averaged over the interval between the moment when the last system monitoring datagram was sent and the present moment.
static void | getNetstatInfo (ApMon &apm, double nsockets[], double tcp_states[]) throw (runtime_error)
| Obtains information about the currently opened sockets.
static int | getNumCPUs () throw (procutils_error)
| Returns the number of CPUs in the system.
static void | getCPUInfo (ApMon &apm) throw (procutils_error)
| Obtains CPU information (vendor, model, frequency, bogomips) and fills the corresponding fields in the ApMon object.
static long | getBootTime () throw (procutils_error)
| Returns the system boot time, in seconds since the Epoch.
static double | getUpTime () throw (procutils_error)
| Returns the system uptime in days.
static int | countOpenFiles (long pid) throw (procutils_error)
| Obtains the number of opened file descriptors for the process with the given pid.

## Detailed Description

Definition at line 62 of file proc_utils.h.

## Member Function Documentation

void ProcUtils::getCPUUsage | ( | ApMon & | apm,
|  | double & | cpuUsage,
|  | double & | cpuUsr,
|  | double & | cpuSys,
|  | double & | cpuNice,
|  | double & | cpuIdle,
|  | int | numCPUs |
| ) |  |  | throw (runtime_error, procutils_error)`[static]`

Calculates the parameters cpu_usr, cpu_sys, cpu_nice, cpu_idle, cpu_usage and stores them in the output parameters cpuUsr, cpuSys,.

..

Definition at line 50 of file proc_utils.cpp.

    00053                                          {
    00054 #ifndef WIN32
    00055   FILE *fp1;
    00056   char line[MAX_STRING_LEN];
    00057   char s1[20];  double usrTime, sysTime, niceTime, idleTime, totalTime;
    00058   int indU, indS, indN, indI;
    00059
    00060   time_t crtTime = time(NULL);
    00061   fp1 = fopen("/proc/stat", "r");
    00062   if (fp1 == NULL)
    00063     throw procutils_error((char*)"[ getCPUUsage() ] Could not open /proc/stat");
    00064
    00065   while (fgets(line, MAX_STRING_LEN, fp1)) {
    00066       if (strstr(line, "cpu") == line)
    00067         break;
    00068   }
    00069
    00070   if (line == NULL) {
    00071     fclose(fp1);
    00072     throw procutils_error((char*)"[ getCPUUsage() ] Could not obtain CPU usage info from /proc/stat");
    00073   }
    00074   fclose(fp1);
    00075
    00076   sscanf(line, "%s %lf %lf %lf %lf", s1, &usrTime, &niceTime, &sysTime,
    00077          &idleTime);
    00078
    00079   indU = getVectIndex( (char*)"cpu_usr", apm.sysMonitorParams, apm.nSysMonitorParams);
    00080   indS = getVectIndex((char*)"cpu_sys", apm.sysMonitorParams, apm.nSysMonitorParams);
    00081   indN = getVectIndex((char*)"cpu_nice", apm.sysMonitorParams, apm.nSysMonitorParams);
    00082   indI = getVectIndex((char*)"cpu_idle", apm.sysMonitorParams, apm.nSysMonitorParams);
    00083   if (idleTime < apm.lastSysVals[indI]) {
    00084     apm.lastSysVals[indU] = usrTime;
    00085     apm.lastSysVals[indS] = sysTime;
    00086     apm.lastSysVals[indN] = niceTime;
    00087     apm.lastSysVals[indI] = idleTime;
    00088     throw runtime_error("[ getCPUUsage() ] CPU usage counter reset");
    00089   }
    00090
    00091   if (numCPUs == 0)
    00092     throw procutils_error((char*)"[ getCPUUsage() ] Number of CPUs was not initialized");
    00093
    00094   //printf("### crtTime %ld lastSysInfo %ld\n", crtTime, apm.lastSysInfoSend);
    00095   if (crtTime <= apm.lastSysInfoSend)
    00096     throw runtime_error("[ getCPUUsage() ] Current time <= time of the previous sysInfoSend");
    00097
    00098   totalTime = (usrTime - apm.lastSysVals[indU]) +
    00099     (sysTime -apm.lastSysVals[indS]) +
    00100     (niceTime - apm.lastSysVals[indN]) +
    00101     (idleTime - apm.lastSysVals[indI]);
    00102
    00103   cpuUsr = 100 * (usrTime - apm.lastSysVals[indU]) / totalTime;
    00104   cpuSys = 100 * (sysTime - apm.lastSysVals[indS]) / totalTime;
    00105   cpuNice = 100 * (niceTime - apm.lastSysVals[indN]) / totalTime;
    00106   cpuIdle = 100 * (idleTime - apm.lastSysVals[indI]) / totalTime;
    00107   cpuUsage = 100 * (totalTime - (idleTime - apm.lastSysVals[indI])) / totalTime;
    00108
    00109   apm.lastSysVals[indU] = usrTime;
    00110   apm.lastSysVals[indN] = niceTime;
    00111   apm.lastSysVals[indI] = idleTime;
    00112   apm.lastSysVals[indS] = sysTime;
    00113 #endif
    00114 }

void ProcUtils::getSwapPages | ( | ApMon & | apm,
|  | double & | pagesIn,
|  | double & | pagesOut,
|  | double & | swapIn,
|  | double & | swapOut |
| ) |  |  | throw (runtime_error, procutils_error)`[static]`

Calculates the parameters pages_in, pages_out, swap_in, swap_out, cpu_usage and stores them in the output parameters pagesIn, pagesOut,.

..

Definition at line 116 of file proc_utils.cpp.

    00119                                          {
    00120 #ifndef WIN32
    00121   FILE *fp1;
    00122   char line[MAX_STRING_LEN];
    00123   char s1[20];
    00124   bool foundPages, foundSwap;
    00125   double p_in, p_out, s_in, s_out;
    00126   int ind1, ind2;
    00127
    00128   time_t crtTime = time(NULL);
    00129   fp1 = fopen("/proc/stat", "r");
    00130   if (fp1 == NULL)
    00131     throw procutils_error((char*)"[ getSwapPages() ] Could not open /proc/stat");
    00132   if (crtTime <= apm.lastSysInfoSend)
    00133     throw runtime_error("[ getSwapPages() ] Current time <= time of the previous sysInfoSend");
    00134
    00135   foundPages = foundSwap = false;
    00136   while (fgets(line, MAX_STRING_LEN, fp1)) {
    00137     if (strstr(line, "page") == line) {
    00138       foundPages = true;
    00139       sscanf(line, "%s %lf %lf ", s1, &p_in, &p_out);
    00140
    00141       ind1 = getVectIndex((char*)"pages_in", apm.sysMonitorParams, apm.nSysMonitorParams);
    00142       ind2 = getVectIndex((char*)"pages_out", apm.sysMonitorParams, apm.nSysMonitorParams);
    00143       if (p_in < apm.lastSysVals[ind1] || p_out < apm.lastSysVals[ind2]) {
    00144         apm.lastSysVals[ind1] = p_in;
    00145         apm.lastSysVals[ind2] = p_out;
    00146         throw runtime_error("[ getSwapPages() ] Pages in/out counter reset");
    00147       }
    00148       pagesIn = (p_in - apm.lastSysVals[ind1]) / (crtTime - apm.lastSysInfoSend);
    00149       pagesOut = (p_out - apm.lastSysVals[ind2]) / (crtTime - apm.lastSysInfoSend);
    00150       apm.lastSysVals[ind1] = p_in;
    00151       apm.lastSysVals[ind2] = p_out;
    00152
    00153     }
    00154
    00155     if (strstr(line, "swap") == line) {
    00156       foundSwap = true;
    00157       sscanf(line, "%s %lf %lf ", s1, &s_in, &s_out);
    00158
    00159       ind1 = getVectIndex((char*)"swap_in", apm.sysMonitorParams, apm.nSysMonitorParams);
    00160       ind2 = getVectIndex((char*)"swap_out", apm.sysMonitorParams, apm.nSysMonitorParams);
    00161       if (s_in < apm.lastSysVals[ind1] || s_out < apm.lastSysVals[ind2]) {
    00162         apm.lastSysVals[ind1] = s_in;
    00163         apm.lastSysVals[ind2] = s_out;
    00164         throw runtime_error("[ getSwapPages() ] Swap in/out counter reset");
    00165       }
    00166       swapIn = (s_in - apm.lastSysVals[ind1]) / (crtTime - apm.lastSysInfoSend);
    00167       swapOut = (s_out - apm.lastSysVals[ind2]) / (crtTime - apm.lastSysInfoSend);
    00168       apm.lastSysVals[ind1] = s_in;
    00169       apm.lastSysVals[ind2] = s_out;
    00170
    00171     }
    00172   }
    00173
    00174   fclose(fp1);
    00175
    00176   if (!foundPages || !foundSwap) {
    00177     throw procutils_error((char*)"[ getSwapPages() ] Could not obtain swap/pages in/out from /proc/stat");
    00178   }
    00179 #endif
    00180 }

void ProcUtils::getLoad | ( | double & | load1,
|  | double & | load5,
|  | double & | load15,
|  | double & | processes |
| ) |  |  | throw (procutils_error)`[static]`

Obtains the CPU load in the last 1, 5 and 15 mins and the number of processes currently running and stores them in the variables given as parameters.

Definition at line 182 of file proc_utils.cpp.

    00184                          {
    00185 #ifndef WIN32
    00186   double v1, v5, v15, activeProcs, totalProcs;
    00187   FILE *fp1;
    00188
    00189   fp1 = fopen("/proc/loadavg", "r");
    00190   if (fp1 == NULL)
    00191     throw procutils_error((char*)"[ getLoad() ] Could not open /proc/loadavg");
    00192
    00193   fscanf(fp1, "%lf %lf %lf", &v1, &v5, &v15);
    00194   load1 = v1;
    00195   load5 = v5;
    00196   load15 = v15;
    00197
    00198   fscanf(fp1, "%lf/%lf", &activeProcs, &totalProcs);
    00199   processes = totalProcs;
    00200   fclose(fp1);
    00201 #endif
    00202 }

void ProcUtils::getProcesses | ( | double & | processes,
|  | double | states[] |
| ) |  |  | throw (runtime_error)`[static]`

Obtains statistics about the total number of processes and the number of processes in each state.

Possible states: D uninterruptible sleep (usually IO) R runnable (on run queue) S sleeping T traced or stopped W paging (2.4 kernels and older only) X dead Z a defunct ("zombie") process

Definition at line 204 of file proc_utils.cpp.

    00205                        {
    00206 #ifndef WIN32
    00207   char *argv[4];
    00208   char psstat_f[40];
    00209   pid_t mypid = getpid();
    00210   pid_t cpid;
    00211   int status;
    00212   char ch, buf[100];
    00213   FILE *pf;
    00214
    00215   sprintf(psstat_f, "/tmp/apmon_psstat%d", mypid);
    00216
    00217  switch (cpid = fork()) {
    00218   case -1:
    00219     throw runtime_error("[ getProcesses() ] Unable to fork()");
    00220   case 0:
    00221     argv[0] = (char *)"/bin/sh"; argv[1] = (char *)"-c";
    00222     sprintf(buf, "ps -A -o state > %s",
    00223             psstat_f);
    00224     argv[2] = buf;
    00225     argv[3] = 0;
    00226     execv("/bin/sh", argv);
    00227     exit(RET_ERROR);
    00228   default:
    00229     if (waitpid(cpid, &status, 0) == -1) {
    00230       sprintf(buf, "[ getProcesses() ] The number of processes could not be determined");
    00231       throw runtime_error(buf);
    00232     }
    00233   }
    00234
    00235   pf = fopen(psstat_f, "rt");
    00236   if (pf == NULL) {
    00237     unlink(psstat_f);
    00238     sprintf(buf, "[ getProcesses() ] The number of processes could not be determined");
    00239     throw runtime_error(buf);
    00240   }
    00241
    00242   processes = 0;
    00243   // the states table keeps an entry for each alphabet letter, for efficient
    00244   // indexing
    00245   for (int i = 0; i < NLETTERS; i++)
    00246     states[i] = 0.0;
    00247   while (fgets(buf, 10, pf) > 0) {
    00248     ch = buf[0];
    00249     states[ch - 65]++;
    00250     processes++;
    00251   }
    00252
    00253   fclose(pf);
    00254   unlink(psstat_f);
    00255 #endif
    00256 }

void ProcUtils::getSysMem | ( | double & | totalMem,
|  | double & | totalSwap |
| ) |  |  | throw (procutils_error)`[static]`

Obtains the total amount of memory and the total amount of swap (in KB) and stores them in the variables given as parameters.

Definition at line 258 of file proc_utils.cpp.

    00259                          {
    00260 #ifndef WIN32
    00261   char s1[20], line[MAX_STRING_LEN];
    00262   bool memFound = false, swapFound = false;
    00263   double valMem, valSwap;
    00264   FILE *fp1;
    00265
    00266   fp1 = fopen("/proc/meminfo", "r");
    00267   if (fp1 == NULL)
    00268     throw procutils_error((char*)"[ getSysMem() ] Could not open /proc/meminfo");
    00269
    00270   while (fgets(line, MAX_STRING_LEN, fp1)) {
    00271     if (strstr(line, "MemTotal:") == line) {
    00272       sscanf(line, "%s %lf", s1, &valMem);
    00273       memFound = true;
    00274       continue;
    00275     }
    00276
    00277     if (strstr(line, "SwapTotal:") == line) {
    00278       sscanf(line, "%s %lf", s1, &valSwap);
    00279       swapFound = true;
    00280       continue;
    00281     }
    00282
    00283   }
    00284   fclose(fp1);
    00285
    00286   if (!memFound || !swapFound)
    00287     throw procutils_error((char*)"[ getSysMem() ] Could not obtain memory info from /proc/meminfo");
    00288   totalMem = valMem;
    00289   totalSwap = valSwap;
    00290 #endif
    00291 }

void ProcUtils::getMemUsed | ( | double & | usedMem,
|  | double & | freeMem,
|  | double & | usedSwap,
|  | double & | freeSwap |
| ) |  |  | throw (procutils_error)`[static]`

Obtains the amount of memory and of swap currently in use and stores them in the variables given as parameters.

Definition at line 293 of file proc_utils.cpp.

    00295                          {
    00296 #ifndef WIN32
    00297   double mFree = 0, mTotal = 0, sFree = 0, sTotal = 0;
    00298   char s1[20], line[MAX_STRING_LEN];
    00299   bool mFreeFound = false, mTotalFound = false;
    00300   bool sFreeFound = false, sTotalFound = false;
    00301   FILE *fp1;
    00302
    00303   fp1 = fopen("/proc/meminfo", "r");
    00304   if (fp1 == NULL)
    00305     throw procutils_error((char*)"[ getMemUsed() ] Could not open /proc/meminfo");
    00306
    00307   while (fgets(line, MAX_STRING_LEN, fp1)) {
    00308     if (strstr(line, "MemTotal:") == line) {
    00309       sscanf(line, "%s %lf", s1, &mTotal);
    00310       mTotalFound = true;
    00311       continue;
    00312     }
    00313
    00314     if (strstr(line, "MemFree:") == line) {
    00315       sscanf(line, "%s %lf", s1, &mFree);
    00316       mFreeFound = true;
    00317       continue;
    00318     }
    00319
    00320     if (strstr(line, "SwapTotal:") == line) {
    00321       sscanf(line, "%s %lf", s1, &sTotal);
    00322       sTotalFound = true;
    00323       continue;
    00324     }
    00325
    00326     if (strstr(line, "SwapFree:") == line) {
    00327       sscanf(line, "%s %lf", s1, &sFree);
    00328       sFreeFound = true;
    00329       continue;
    00330     }
    00331
    00332   }
    00333   fclose(fp1);
    00334
    00335   if (!mFreeFound || !mTotalFound || !sFreeFound || !sTotalFound)
    00336     throw procutils_error((char*)"[ getMemUsed() ] Could not obtain memory info from /proc/meminfo");
    00337
    00338   usedMem = (mTotal - mFree) / 1024;
    00339   freeMem = mFree / 1024;
    00340   usedSwap = (sTotal - sFree) / 1024;
    00341   freeSwap = sFree / 1024;
    00342 #endif
    00343 }

void ProcUtils::getNetworkInterfaces | ( | int & | nInterfaces,
|  | char | names[][20] |
| ) |  |  | throw (procutils_error)`[static]`

Obtains the names of the network interfaces (excepting the loopback one).

Parameters:

  | nInterfaces | Output parameter which will store the number of network interfaces.
  | names | Output parameter which will store the names of the interfaces.

Definition at line 345 of file proc_utils.cpp.

    00346                                                                {
    00347 #ifndef WIN32
    00348   char line[MAX_STRING_LEN], *tmp;
    00349 //  char buf[MAX_STRING_LEN];
    00350 //  char *pbuf = buf;
    00351   FILE *fp1;
    00352
    00353   nInterfaces = 0;
    00354
    00355   fp1 = fopen("/proc/net/dev", "r");
    00356   if (fp1 == NULL)
    00357     throw procutils_error((char*)"[ getMemUsed() ] Could not open /proc/net/dev");
    00358   while (fgets(line, MAX_STRING_LEN, fp1)) {
    00359     if (strchr(line, ':') == NULL)
    00360       continue;
    00361
    00362     tmp = strtok/*_r*/(line, " :");//, &pbuf);
    00363
    00364     if (strcmp(tmp, "lo") == 0)
    00365       continue;
    00366
    00367     strcpy(names[nInterfaces], tmp);
    00368     nInterfaces++;
    00369   }
    00370
    00371   fclose(fp1);
    00372 #endif
    00373 }

void ProcUtils::getNetInfo | ( | ApMon & | apm,
|  | double ** | vNetIn,
|  | double ** | vNetOut,
|  | double ** | vNetErrs |
| ) |  |  | throw (runtime_error, procutils_error)`[static]`

Computes the input/output traffic for all the network interfaces, in kilobytes per second averaged over the interval between the moment when the last system monitoring datagram was sent and the present moment.

Parameters:

  | apm | The ApMon object used for monitoring.
  | vNetIn | Points to an array with the average values of bytes received per second by each interface.
  | vNetOut | Points to an array with the average values of bytes transmitted per second by each interface.
  | vNetErrs | Points to an array with the number of errors for each interface.

Definition at line 375 of file proc_utils.cpp.

    00377                                         {
    00378 #ifndef WIN32
    00379   double *netIn, *netOut, *netErrs, bytesReceived, bytesSent;
    00380   int errs;
    00381   char line[MAX_STRING_LEN], msg[MAX_STRING_LEN];
    00382 //  char buf[MAX_STRING_LEN];
    00383 //  char *pbuf = buf;
    00384   char *tmp, *tok;
    00385   double bootTime = 0;
    00386   FILE *fp1;
    00387   time_t crtTime = time(NULL);
    00388   int ind, i;
    00389
    00390   if (apm.lastSysInfoSend == 0) {
    00391     try {
    00392       bootTime = getBootTime();
    00393     } catch (procutils_error& /*err*/) {
    00394       logger(WARNING, "[ getNetInfo() ] Error obtaining boot time. The first system monitoring datagram will contain incorrect data.");
    00395       bootTime = 0;
    00396     }
    00397   }
    00398
    00399   if (crtTime <= apm.lastSysInfoSend)
    00400     throw runtime_error("[ getNetInfo() ] Current time <= time of the previous sysInfoSend");
    00401
    00402   fp1 = fopen("/proc/net/dev", "r");
    00403   if (fp1 == NULL)
    00404     throw procutils_error((char*)"[ getNetInfo() ] Could not open /proc/net/dev");
    00405
    00406   netIn = (double *)malloc(apm.nInterfaces * sizeof(double));
    00407   netOut = (double *)malloc(apm.nInterfaces * sizeof(double));
    00408   netErrs = (double *)malloc(apm.nInterfaces * sizeof(double));
    00409
    00410   while (fgets(line, MAX_STRING_LEN, fp1)) {
    00411     if (strchr(line, ':') == NULL)
    00412       continue;
    00413     tmp = strtok/*_r*/(line, " :");//, &pbuf);
    00414
    00415     /* the loopback interface is not considered */
    00416     if (strcmp(tmp, "lo") == 0)
    00417       continue;
    00418
    00419     /* find the index of the interface in the vector */
    00420     ind = -1;
    00421     for (i = 0; i < apm.nInterfaces; i++)
    00422       if (strcmp(apm.interfaceNames[i], tmp) == 0) {
    00423         ind = i;
    00424         break;
    00425       }
    00426
    00427     if (ind < 0) {
    00428       fclose(fp1);
    00429       free(netIn); free(netOut); free(netErrs);
    00430       sprintf(msg, "[ getNetInfo() ] Could not find interface %s in /proc/net/dev",
    00431               tmp);
    00432       throw runtime_error(msg);
    00433     }
    00434
    00435     /* parse the rest of the line */
    00436     tok = strtok/*_r*/(NULL, " ");//, &pbuf);
    00437     bytesReceived = atof(tok); /* bytes received */
    00438     tok = strtok/*_r*/(NULL, " ");//, &pbuf); /* packets received */
    00439     tok = strtok/*_r*/(NULL, " ");//, &pbuf); /* input errors */
    00440     errs = atoi(tok);
    00441     /* some parameters that we are not monitoring */
    00442     for (i = 1; i <= 5; i++)
    00443       tok = strtok/*_r*/(NULL, " ");//, &pbuf);
    00444
    00445     tok = strtok/*_r*/(NULL, " ");//, &pbuf); /* bytes transmitted */
    00446     bytesSent = atof(tok);
    00447     tok = strtok/*_r*/(NULL, " ");//, &pbuf); /* packets transmitted */
    00448     tok = strtok/*_r*/(NULL, " ");//, &pbuf); /* output errors */
    00449     errs += atoi(tok);
    00450
    00451     //printf("### bytesReceived %lf lastRecv %lf\n", bytesReceived,
    00452     // apm.lastBytesReceived[ind]);
    00453     if (bytesReceived < apm.lastBytesReceived[ind] || bytesSent <
    00454         apm.lastBytesSent[ind] || errs < apm.lastNetErrs[ind]) {
    00455       apm.lastBytesReceived[ind] = bytesReceived;
    00456       apm.lastBytesSent[ind] = bytesSent;
    00457       apm.lastNetErrs[ind] = errs;
    00458       fclose(fp1);
    00459       free(netIn); free(netOut); free(netErrs);
    00460       throw runtime_error("[ getNetInfo() ] Network interface(s) restarted.");
    00461     }
    00462
    00463     if (apm.lastSysInfoSend == 0) {
    00464       netIn[ind] = bytesReceived/(crtTime - bootTime);
    00465       netOut[ind] = bytesSent/(crtTime - bootTime);
    00466       netErrs[ind] = errs;
    00467     }
    00468     else {
    00469       netIn[ind] = (bytesReceived - apm.lastBytesReceived[ind]) / (crtTime -
    00470                                                      apm.lastSysInfoSend);
    00471       netIn[ind] /= 1024; /* netIn is measured in KBps */
    00472       netOut[ind] = (bytesSent - apm.lastBytesSent[ind]) / (crtTime -
    00473                                                      apm.lastSysInfoSend);
    00474       netOut[ind] /= 1024; /* netOut is measured in KBps */
    00475       /* for network errors give the total number */
    00476       netErrs[ind] = errs; // - apm.lastNetErrs[ind];
    00477     }
    00478
    00479     apm.lastBytesReceived[ind] = bytesReceived;
    00480     apm.lastBytesSent[ind] = bytesSent;
    00481     apm.lastNetErrs[ind] = errs;
    00482   }
    00483
    00484   fclose(fp1);
    00485   *vNetIn = netIn;
    00486   *vNetOut = netOut;
    00487   *vNetErrs = netErrs;
    00488 #endif
    00489  }

void ProcUtils::getNetstatInfo | ( | ApMon & | apm,
|  | double | nsockets[],
|  | double | tcp_states[] |
| ) |  |  | throw (runtime_error)`[static]`

Obtains information about the currently opened sockets.

Parameters:

  | nsockets | Output parameter that holds a table with the number of TCP, UDP, ICM, Unix sockets.
  | tcp_states | Output parameter that holds a table with the number of TCP sockets in each possible state (ESTABLISHED, LISTEN, ...).

Definition at line 669 of file proc_utils.cpp.

    00671                        {
    00672
    00673   // the states table keeps an entry for each alphabet letter, for efficient
    00674   // indexing
    00675   int i;
    00676   for (i = 0; i < 4; i++)
    00677     nsockets[i] = 0.0;
    00678   for (i = 0; i < N_TCP_STATES; i++)
    00679     tcp_states[i] = 0.0;
    00680
    00681 #ifndef WIN32
    00682   char *argv[4];
    00683   char netstat_f[40];
    00684   pid_t mypid = getpid();
    00685   pid_t cpid;
    00686   int status, idx;
    00687   char /*ch,*/ buf[100], msg[100];
    00688   char *pbuf = buf, *tmp, *tmp2;
    00689   FILE *pf;
    00690
    00691   sprintf(netstat_f, "/tmp/apmon_netstat%d", mypid);
    00692
    00693   switch (cpid = fork()) {
    00694   case -1:
    00695     throw runtime_error("[ getNetstatInfo() ] Unable to fork()");
    00696   case 0:
    00697     argv[0] = (char *)"/bin/sh"; argv[1] = (char *)"-c";
    00698     sprintf(buf, "netstat -an > %s",
    00699             netstat_f);
    00700     argv[2] = buf;
    00701     argv[3] = 0;
    00702     execv("/bin/sh", argv);
    00703     exit(RET_ERROR);
    00704   default:
    00705     if (waitpid(cpid, &status, 0) == -1) {
    00706       sprintf(msg, "[ getNetstatInfo() ] The netstat information could not be collected");
    00707       throw runtime_error(msg);
    00708     }
    00709   }
    00710
    00711   pf = fopen(netstat_f, "rt");
    00712   if (pf == NULL) {
    00713     unlink(netstat_f);
    00714     sprintf(msg, "[ getNetstatInfo() ] The netstat information could not be collected");
    00715     throw runtime_error(msg);
    00716   }
    00717
    00718   while (fgets(buf, 200, pf) > 0) {
    00719     tmp = strtok_r(buf, " \t\n", &pbuf);
    00720     if (strstr(tmp, "tcp") == tmp) {
    00721       nsockets[SOCK_TCP]++;
    00722
    00723       /* go to the "State" field */
    00724       for (i = 1; i <= 5; i++)
    00725         tmp2 = strtok_r(NULL, " \t\n", &pbuf);
    00726
    00727       idx = getVectIndex(tmp2, apm.socketStatesMapTCP, N_TCP_STATES);
    00728       if (idx >= 0) {
    00729         tcp_states[idx]++;
    00730       } else {
    00731         sprintf(msg, "[ getNestatInfo() ] Invalid socket state: %s q", tmp2);
    00732         logger(WARNING, msg);
    00733       }
    00734     } else {
    00735       if (strstr(tmp, "udp") == tmp) {
    00736         nsockets[SOCK_UDP]++;
    00737       } else {
    00738         if (strstr(tmp, "unix") == tmp)
    00739           nsockets[SOCK_UNIX]++;
    00740         else if (strstr(tmp, "icm") == tmp)
    00741           nsockets[SOCK_ICM]++;
    00742       }
    00743     }
    00744   }
    00745
    00746   fclose(pf);
    00747   unlink(netstat_f);
    00748 #endif
    00749 }

int ProcUtils::getNumCPUs | ( |  | ) | throw (procutils_error)`[static]`

Returns the number of CPUs in the system.

Definition at line 491 of file proc_utils.cpp.

    00491                                                  {
    00492 #ifdef WIN32
    00493         return 0;
    00494 #else
    00495   int numCPUs = 0;
    00496   char line[MAX_STRING_LEN];
    00497
    00498   FILE *fp = fopen("/proc/stat", "r");
    00499
    00500   if (fp == NULL)
    00501     throw procutils_error((char*)"[ getNumCPUs() ] Could not open /proc/stat.");
    00502
    00503   while(fgets(line, MAX_STRING_LEN, fp)) {
    00504     if (strstr(line, "cpu") == line && isdigit(line[3]))
    00505       numCPUs++;
    00506   }
    00507
    00508   fclose(fp);
    00509   return numCPUs;
    00510 #endif
    00511 }

void ProcUtils::getCPUInfo | ( | ApMon & | apm | ) | throw (procutils_error)`[static]`

Obtains CPU information (vendor, model, frequency, bogomips) and fills the corresponding fields in the ApMon object.

Definition at line 513 of file proc_utils.cpp.

    00513                                                             {
    00514 #ifndef WIN32
    00515   double freq = 0;
    00516   char line[MAX_STRING_LEN], s1[100], s2[100], s3[100];
    00517 //  char buf[MAX_STRING_LEN];
    00518 //  char *pbuf = buf;
    00519   char *tmp, *tmp_trim;
    00520   bool freqFound = false, bogomipsFound = false;
    00521
    00522   FILE *fp = fopen("/proc/cpuinfo", "r");
    00523   if (fp == NULL)
    00524     throw procutils_error((char*)"[ getCPUInfo() ] Could not open /proc/cpuinfo");
    00525
    00526   while (fgets(line, MAX_STRING_LEN, fp)) {
    00527     if (strstr(line, "cpu MHz") == line) {
    00528       sscanf(line, "%s %s %s %lf", s1, s2, s3, &freq);
    00529       apm.currentGenVals[GEN_CPU_MHZ] = freq;
    00530       freqFound = true;
    00531       continue;
    00532     }
    00533
    00534     if (strstr(line, "bogomips") == line) {
    00535       sscanf(line, "%s %s %lf", s1, s2, &(apm.currentGenVals[GEN_BOGOMIPS]));
    00536       bogomipsFound = true;
    00537       continue;
    00538     }
    00539
    00540     if (strstr(line, "vendor_id") == line) {
    00541       tmp = strtok/*_r*/(line, ":");//, &pbuf);
    00542       /* take everything that's after the ":" */
    00543       tmp = strtok/*_r*/(NULL, ":");//, &pbuf);
    00544       tmp_trim = trimString(tmp);
    00545       strcpy(apm.cpuVendor, tmp_trim);
    00546       free(tmp_trim);
    00547       continue;
    00548     }
    00549
    00550     if (strstr(line, "cpu family") == line) {
    00551       tmp = strtok/*_r*/(line, ":");//, &pbuf);
    00552       tmp = strtok/*_r*/(NULL, ":");//, &pbuf);
    00553       tmp_trim = trimString(tmp);
    00554       strcpy(apm.cpuFamily, tmp_trim);
    00555       free(tmp_trim);
    00556       continue;
    00557     }
    00558
    00559     if (strstr(line, "model") == line && strstr(line, "model name") != line) {
    00560       tmp = strtok/*_r*/(line, ":");//, &pbuf);
    00561       tmp = strtok/*_r*/(NULL, ":");//, &pbuf);
    00562       tmp_trim = trimString(tmp);
    00563       strcpy(apm.cpuModel, tmp_trim);
    00564       free(tmp_trim);
    00565       continue;
    00566     }
    00567
    00568     if (strstr(line, "model name") == line) {
    00569       tmp = strtok/*_r*/(line, ":");//, &pbuf);
    00570       /* take everything that's after the ":" */
    00571       tmp = strtok/*_r*/(NULL, ":");//, &pbuf);
    00572       tmp_trim = trimString(tmp);
    00573       strcpy(apm.cpuModelName, tmp_trim);
    00574       free(tmp_trim);
    00575       continue;
    00576     }
    00577   }
    00578
    00579   fclose(fp);
    00580   if (!freqFound || !bogomipsFound)
    00581     throw procutils_error((char*)"[ getCPUInfo() ] Could not find frequency or bogomips in /proc/cpuinfo");
    00582 #endif
    00583 }

long ProcUtils::getBootTime | ( |  | ) | throw (procutils_error)`[static]`

Returns the system boot time, in seconds since the Epoch.

Returns the system boot time in milliseconds since the Epoch.

Definition at line 588 of file proc_utils.cpp.

    00588                                                     {
    00589 #ifdef WIN32
    00590         return 0;
    00591 #else
    00592   char line[MAX_STRING_LEN], s[MAX_STRING_LEN];
    00593   long btime = 0;
    00594   FILE *fp = fopen("/proc/stat", "rt");
    00595   if (fp == NULL)
    00596     throw procutils_error((char*)"[ getBootTime() ] Could not open /proc/stat");
    00597
    00598   while (fgets(line, MAX_STRING_LEN, fp)) {
    00599     if (strstr(line, "btime") == line) {
    00600       sscanf(line, "%s %ld", s, &btime);
    00601       break;
    00602     }
    00603   }
    00604   fclose(fp);
    00605   if (btime == 0)
    00606     throw procutils_error((char*)"[ getBootTime() ] Could not find boot time in /proc/stat");
    00607   return btime;
    00608 #endif
    00609 }

double ProcUtils::getUpTime | ( |  | ) | throw (procutils_error)`[static]`

Returns the system uptime in days.

Definition at line 612 of file proc_utils.cpp.

    00612                                                    {
    00613 #ifdef WIN32
    00614         return 0;
    00615 #else
    00616   double uptime = 0;
    00617   FILE *fp = fopen("/proc/uptime", "rt");
    00618   if (fp == NULL) {
    00619     throw procutils_error((char*)"[ getUpTime() ] Could not open /proc/uptime");
    00620   }
    00621
    00622   fscanf(fp, "%lf", &uptime);
    00623   fclose(fp);
    00624
    00625   if (uptime <= 0) {
    00626     throw procutils_error((char*)"[ getUpTime() ] Could not find uptime in /proc/uptime");
    00627   }
    00628   return uptime / (24 * 3600);
    00629 #endif
    00630 }

int ProcUtils::countOpenFiles | ( | long | pid | ) | throw (procutils_error)`[static]`

Obtains the number of opened file descriptors for the process with the given pid.

Definition at line 632 of file proc_utils.cpp.

    00632                                                              {
    00633 #ifdef WIN32
    00634         return 0;
    00635 #else
    00636   char dirname[50];
    00637   char msg[MAX_STRING_LEN];
    00638   DIR *dir;
    00639   int cnt = 0;
    00640
    00641   /* in /proc/<pid>/fd/ there is an entry for each opened file descriptor */
    00642   sprintf(dirname, "/proc/%ld/fd", pid);
    00643   dir = opendir(dirname);
    00644   if (dir == NULL) {
    00645     sprintf(msg, "[ countOpenFiles() ] Could not open %s", dirname);
    00646     throw procutils_error(msg);
    00647   }
    00648
    00649   /* count the files from /proc/<pid>/fd/ */
    00650   while (readdir(dir) != NULL) {
    00651     cnt++;
    00652   }
    00653
    00654   closedir(dir);
    00655
    00656   /* don't take into account . and .. */
    00657   cnt -= 2;
    00658   if (cnt < 0) {
    00659     sprintf(msg, "[ countOpenFiles() ] Directory %s has less than 2 entries",
    00660             dirname);
    00661     logger(FINE, msg);
    00662     cnt = 0;
    00663   }
    00664
    00665   return cnt;
    00666 #endif
    00667 }

The documentation for this class was generated from the following files:

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v21r8/GaudiMonitor/src/DataListenerSvc/proc_utils.h
- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v21r8/GaudiMonitor/src/DataListenerSvc/proc_utils.cpp