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Memory.cpp
00001 /*********************************************************************
00002 * Software License Agreement (BSD License)
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00034 
00035 /* Author: The Internet */
00036 
00037 #include "ompl/util/Memory.h"
00038 #include "ompl/util/Console.h"
00039 
00040 
00041 #if defined _WIN32
00042 
00043 // Windows 2000 or newer
00044 #include <windows.h>
00045 #include <stdio.h>
00046 #include <psapi.h>
00047 
00048 ompl::MemUsage_t getProcessMemoryUsageAux(void)
00049 {
00050     HANDLE hProcess;
00051     PROCESS_MEMORY_COUNTERS pmc;
00052 
00053     hProcess = OpenProcess(  PROCESS_QUERY_INFORMATION |
00054                              PROCESS_VM_READ,
00055                              false,
00056                              GetCurrentProcessId() );
00057 
00058     ompl::MemUsage_t result = 0;
00059 
00060     if (NULL != hProcess)
00061     {
00062         if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) )
00063             result = pmc.WorkingSetSize;
00064         CloseHandle( hProcess );
00065     }
00066 
00067     return result;
00068 }
00069 
00070 #else
00071 #if defined __APPLE__
00072 
00073 // Mac OS 10.2 or newer
00074 #include <mach/mach_init.h>
00075 #include <mach/task.h>
00076 #include <sys/time.h>
00077 #include <sys/resource.h>
00078 #include <stdint.h>
00079 #include <cstring>
00080 #include <unistd.h>
00081 
00082 ompl::MemUsage_t getProcessMemoryUsageAux(void)
00083 {
00084 
00085     task_basic_info         info;
00086     kern_return_t           rval = 0;
00087     mach_port_t             task = mach_task_self();
00088     mach_msg_type_number_t  tcnt = TASK_BASIC_INFO_COUNT;
00089     task_info_t             tptr = (task_info_t) &info;
00090 
00091     memset(&info, 0, sizeof(info));
00092 
00093     rval = task_info(task, TASK_BASIC_INFO, tptr, &tcnt);
00094     if (!(rval == KERN_SUCCESS)) return 0;
00095     return info.resident_size;
00096 }
00097 
00098 #else
00099 #if defined _POSIX_VERSION
00100 // we need a posix compliant os that exposes /proc/self/stat
00101 
00102 #include <unistd.h>
00103 #include <ios>
00104 #include <iostream>
00105 #include <fstream>
00106 #include <string>
00107 
00108 ompl::MemUsage_t getProcessMemoryUsageAux(void)
00109 {
00110    using std::ios_base;
00111    using std::ifstream;
00112    using std::string;
00113 
00114    // 'file' stat seems to give the most reliable results
00115    //
00116    ifstream stat_stream("/proc/self/stat",ios_base::in);
00117 
00118    if (stat_stream.good() && !stat_stream.eof())
00119    {
00120        // dummy vars for leading entries in stat that we don't care about
00121        //
00122        string pid, comm, state, ppid, pgrp, session, tty_nr;
00123        string tpgid, flags, minflt, cminflt, majflt, cmajflt;
00124        string utime, stime, cutime, cstime, priority, nice;
00125        string O, itrealvalue, starttime;
00126 
00127 
00128        // the two fields we want
00129        //
00130        unsigned long vsize;
00131        long rss;
00132 
00133        stat_stream >> pid >> comm >> state >> ppid >> pgrp >> session >> tty_nr
00134                    >> tpgid >> flags >> minflt >> cminflt >> majflt >> cmajflt
00135                    >> utime >> stime >> cutime >> cstime >> priority >> nice
00136                    >> O >> itrealvalue >> starttime >> vsize >> rss; // don't care about the rest
00137 
00138        unsigned long long page_size = sysconf(_SC_PAGE_SIZE);
00139        return rss * page_size;
00140    }
00141    return 0;
00142 }
00143 
00144 #else
00145 // if we have no idea what to do, we return 0
00146 ompl::MemUsage_t getProcessMemoryUsageAux(void)
00147 {
00148     return 0;
00149 }
00150 #endif // posix
00151 #endif // apple
00152 #endif // windows
00153 
00154 ompl::MemUsage_t ompl::getProcessMemoryUsage(void)
00155 {
00156     MemUsage_t result = getProcessMemoryUsageAux();
00157     if (result == 0)
00158     {
00159         static msg::Interface memMsg;
00160         memMsg.warn("Unable to get memory usage");
00161     }
00162     return result;
00163 }
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