bundles/org.simantics.nativemem/src/org/simantics/nativemem/NativeMem.java

   1 package org.simantics.nativemem;\r
   2 \r
   3 import org.simantics.nativemem.internal.Arch;\r
   4 import org.simantics.nativemem.internal.OS;\r
   5 import org.simantics.nativemem.internal.Psapi32;\r
   6 import org.simantics.nativemem.internal.Psapi64;\r
   7 \r
   8 import com.sun.jna.platform.win32.Kernel32;\r
   9 import com.sun.jna.platform.win32.WinNT.HANDLE;\r
  10 \r
  11 \r
  12 public class NativeMem {\r
  13 \r
  14     /**\r
  15      * @param out\r
  16      *            the structure to write the result into or <code>null</code> to\r
  17      *            create a new structure\r
  18      * @return the result structure\r
  19      */\r
  20     public static ProcessMemoryCounters getMemoryCounters(ProcessMemoryCounters out) {\r
  21         if (out == null)\r
  22             out = new ProcessMemoryCounters();\r
  23 \r
  24         OS os = OS.calculate();\r
  25         Arch arch = Arch.calculate();\r
  26         switch (os) {\r
  27         case WINDOWS: {\r
  28             HANDLE proc = Kernel32.INSTANCE.GetCurrentProcess();\r
  29             switch (arch) {\r
  30             case X86: {\r
  31                 Psapi32.PROCESS_MEMORY_COUNTERS_EX pmem = new Psapi32.PROCESS_MEMORY_COUNTERS_EX();\r
  32                 boolean ok = Psapi32.INSTANCE.GetProcessMemoryInfo(proc, pmem, pmem.size());\r
  33                 if (ok)\r
  34                     pmem.writeTo(out);\r
  35                 return out;\r
  36             }\r
  37 \r
  38             case X86_64: {\r
  39                 Psapi64.PROCESS_MEMORY_COUNTERS_EX pmem = new Psapi64.PROCESS_MEMORY_COUNTERS_EX();\r
  40                 boolean ok = Psapi64.INSTANCE.GetProcessMemoryInfo(proc, pmem, pmem.size());\r
  41                 if (ok)\r
  42                     pmem.writeTo(out);\r
  43                 return out;\r
  44             }\r
  45 \r
  46             default:\r
  47                 throw new UnsupportedOperationException("Architecture " + arch + " not supported on operating system " + os);\r
  48             }\r
  49         }\r
  50 \r
  51         default:\r
  52             throw new UnsupportedOperationException("Operating system " + os + " not supported");\r
  53         }\r
  54     }\r
  55 \r
  56 }