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MachineSpecs.cpp
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00034 
00035 /* Author: The Internet */
00036 
00037 #include "ompl/tools/benchmark/MachineSpecs.h"
00038 #include "ompl/util/Console.h"
00039 
00040 #ifndef _WIN32
00041 #include <unistd.h>
00042 #endif
00043 
00045 
00046 #if defined _WIN32
00047 
00048 // Windows 2000 or newer
00049 #include <windows.h>
00050 #include <stdio.h>
00051 #include <psapi.h>
00052 #include <winsock2.h>
00053 
00054 ompl::machine::MemUsage_t getProcessMemoryUsageAux(void)
00055 {
00056     HANDLE hProcess;
00057     PROCESS_MEMORY_COUNTERS pmc;
00058 
00059     hProcess = OpenProcess(  PROCESS_QUERY_INFORMATION |
00060                              PROCESS_VM_READ,
00061                              false,
00062                              GetCurrentProcessId() );
00063 
00064     ompl::machine::MemUsage_t result = 0;
00065 
00066     if (NULL != hProcess)
00067     {
00068         if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) )
00069             result = pmc.WorkingSetSize;
00070         CloseHandle( hProcess );
00071     }
00072 
00073     return result;
00074 }
00075 
00076 #else
00077 #if defined __APPLE__
00078 
00079 // Mac OS 10.2 or newer
00080 #include <mach/mach_init.h>
00081 #include <mach/task.h>
00082 #include <sys/time.h>
00083 #include <sys/resource.h>
00084 #include <stdint.h>
00085 #include <cstring>
00086 #include <unistd.h>
00087 
00088 ompl::machine::MemUsage_t getProcessMemoryUsageAux(void)
00089 {
00090 
00091     task_basic_info         info;
00092     kern_return_t           rval = 0;
00093     mach_port_t             task = mach_task_self();
00094     mach_msg_type_number_t  tcnt = TASK_BASIC_INFO_COUNT;
00095     task_info_t             tptr = (task_info_t) &info;
00096 
00097     memset(&info, 0, sizeof(info));
00098 
00099     rval = task_info(task, TASK_BASIC_INFO, tptr, &tcnt);
00100     if (!(rval == KERN_SUCCESS)) return 0;
00101     return info.resident_size;
00102 }
00103 
00104 #else
00105 #if defined _POSIX_VERSION
00106 // we need a posix compliant os that exposes /proc/self/stat
00107 
00108 #include <unistd.h>
00109 #include <ios>
00110 #include <iostream>
00111 #include <fstream>
00112 
00113 ompl::machine::MemUsage_t getProcessMemoryUsageAux(void)
00114 {
00115    using std::ios_base;
00116    using std::ifstream;
00117    using std::string;
00118 
00119    // 'file' stat seems to give the most reliable results
00120    //
00121    ifstream stat_stream("/proc/self/stat",ios_base::in);
00122 
00123    if (stat_stream.good() && !stat_stream.eof())
00124    {
00125        // dummy vars for leading entries in stat that we don't care about
00126        //
00127        string pid, comm, state, ppid, pgrp, session, tty_nr;
00128        string tpgid, flags, minflt, cminflt, majflt, cmajflt;
00129        string utime, stime, cutime, cstime, priority, nice;
00130        string O, itrealvalue, starttime;
00131 
00132 
00133        // the two fields we want
00134        //
00135        unsigned long vsize;
00136        long rss;
00137 
00138        stat_stream >> pid >> comm >> state >> ppid >> pgrp >> session >> tty_nr
00139                    >> tpgid >> flags >> minflt >> cminflt >> majflt >> cmajflt
00140                    >> utime >> stime >> cutime >> cstime >> priority >> nice
00141                    >> O >> itrealvalue >> starttime >> vsize >> rss; // don't care about the rest
00142 
00143        ompl::machine::MemUsage_t page_size = sysconf(_SC_PAGE_SIZE);
00144        return rss * page_size;
00145    }
00146    return 0;
00147 }
00148 
00149 #else
00150 // if we have no idea what to do, we return 0
00151 ompl::machine::MemUsage_t getProcessMemoryUsageAux(void)
00152 {
00153     return 0;
00154 }
00155 #endif // posix
00156 #endif // apple
00157 #endif // windows
00158 
00159 ompl::machine::MemUsage_t ompl::machine::getProcessMemoryUsage(void)
00160 {
00161     MemUsage_t result = getProcessMemoryUsageAux();
00162     if (result == 0)
00163     {
00164         static msg::Interface memMsg;
00165         memMsg.warn("Unable to get memory usage");
00166     }
00167     return result;
00168 }
00169 
00170 std::string ompl::machine::getHostname(void)
00171 {
00172     static const int BUF_SIZE = 1024;
00173     char buffer[BUF_SIZE];
00174     int len = gethostname(buffer, sizeof(buffer));
00175     if (len != 0)
00176         return std::string();
00177     else
00178     {
00179         buffer[BUF_SIZE - 1] = '\0';
00180         return std::string(buffer);
00181     }
00182 }
00183