windows/JackShmMem_os.h

   1 /*
   2  Copyright (C) 2004-2008 Grame
   3
   4  This program is free software; you can redistribute it and/or modify
   5  it under the terms of the GNU Lesser General Public License as published by
   6  the Free Software Foundation; either version 2.1 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU Lesser General Public License for more details.
  13
  14  You should have received a copy of the GNU Lesser General Public License
  15  along with this program; if not, write to the Free Software
  16  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18  */
  19
  20 #ifndef __JackShmMem_WIN32__
  21 #define __JackShmMem_WIN32__
  22
  23 #include <windows.h>
  24
  25 inline bool CHECK_MLOCK(void* ptr, size_t size)
  26 {
  27     if (!VirtualLock((ptr), (size))) {
  28         SIZE_T minWSS, maxWSS;
  29         HANDLE hProc = GetCurrentProcess();
  30         if (GetProcessWorkingSetSize(hProc, &minWSS, &maxWSS)) {
  31             const size_t increase = size + (10 * 4096);
  32             maxWSS += increase;
  33             minWSS += increase;
  34             if (!SetProcessWorkingSetSize(hProc, minWSS, maxWSS)) {
  35                 jack_error("SetProcessWorkingSetSize error = %d", GetLastError());
  36                 return false;
  37             } else if (!VirtualLock((ptr), (size))) {
  38                 jack_error("VirtualLock error = %d", GetLastError());
  39                 return false;
  40             } else {
  41                 return true;
  42             }
  43         } else {
  44             return false;
  45         }
  46     } else {
  47         return true;
  48     }
  49 }
  50
  51 #define CHECK_MUNLOCK(ptr, size) (VirtualUnlock((ptr), (size)) != 0)
  52 #define CHECK_MLOCKALL()(false)
  53 #define CHECK_MUNLOCKALL()(false)
  54
  55 #endif
  56