programs/taskmgr/priority.c

   1 /*
   2  *  ReactOS Task Manager
   3  *
   4  *  priority.c
   5  *
   6  *  Copyright (C) 1999 - 2001  Brian Palmer  <brianp@reactos.org>
   7  *  Copyright (C) 2008  Vladimir Pankratov
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #define WIN32_LEAN_AND_MEAN    /* Exclude rarely-used stuff from Windows headers */
  25 #include <windows.h>
  26 #include <commctrl.h>
  27 #include <stdlib.h>
  28 #include <memory.h>
  29 #include <stdio.h>
  30 #include <winnt.h>
  31
  32 #include "wine/unicode.h"
  33 #include "taskmgr.h"
  34 #include "perfdata.h"
  35
  36 static void DoSetPriority(DWORD priority)
  37 {
  38     LVITEMW          lvitem;
  39     ULONG            Index;
  40     DWORD            dwProcessId;
  41     HANDLE           hProcess;
  42     WCHAR            wstrErrorText[256];
  43
  44     WCHAR    wszWarnMsg[255];
  45     WCHAR    wszWarnTitle[255];
  46     WCHAR    wszUnable2Change[255];
  47
  48     LoadStringW(hInst, IDS_PRIORITY_CHANGE_MESSAGE, wszWarnMsg, sizeof(wszWarnMsg)/sizeof(WCHAR));
  49     LoadStringW(hInst, IDS_WARNING_TITLE, wszWarnTitle, sizeof(wszWarnTitle)/sizeof(WCHAR));
  50     LoadStringW(hInst, IDS_PRIORITY_UNABLE2CHANGE, wszUnable2Change, sizeof(wszUnable2Change)/sizeof(WCHAR));
  51
  52     for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
  53     {
  54         lvitem.mask = LVIF_STATE;
  55         lvitem.stateMask = LVIS_SELECTED;
  56         lvitem.iItem = Index;
  57         lvitem.iSubItem = 0;
  58
  59         SendMessageW(hProcessPageListCtrl, LVM_GETITEMW, 0, (LPARAM)&lvitem);
  60
  61         if (lvitem.state & LVIS_SELECTED)
  62             break;
  63     }
  64
  65     dwProcessId = PerfDataGetProcessId(Index);
  66
  67     if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
  68         return;
  69
  70     if (MessageBoxW(hMainWnd, wszWarnMsg, wszWarnTitle, MB_YESNO|MB_ICONWARNING) != IDYES)
  71         return;
  72
  73     hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
  74
  75     if (!hProcess)
  76     {
  77         GetLastErrorText(wstrErrorText, sizeof(wstrErrorText)/sizeof(WCHAR));
  78         MessageBoxW(hMainWnd, wstrErrorText, wszUnable2Change, MB_OK|MB_ICONSTOP);
  79         return;
  80     }
  81
  82     if (!SetPriorityClass(hProcess, priority))
  83     {
  84         GetLastErrorText(wstrErrorText, sizeof(wstrErrorText)/sizeof(WCHAR));
  85         MessageBoxW(hMainWnd, wstrErrorText, wszUnable2Change, MB_OK|MB_ICONSTOP);
  86     }
  87
  88     CloseHandle(hProcess);
  89 }
  90
  91 void ProcessPage_OnSetPriorityRealTime(void)
  92 {
  93     DoSetPriority(REALTIME_PRIORITY_CLASS);
  94 }
  95
  96 void ProcessPage_OnSetPriorityHigh(void)
  97 {
  98     DoSetPriority(HIGH_PRIORITY_CLASS);
  99 }
 100
 101 void ProcessPage_OnSetPriorityAboveNormal(void)
 102 {
 103     DoSetPriority(ABOVE_NORMAL_PRIORITY_CLASS);
 104 }
 105
 106 void ProcessPage_OnSetPriorityNormal(void)
 107 {
 108     DoSetPriority(NORMAL_PRIORITY_CLASS);
 109 }
 110
 111 void ProcessPage_OnSetPriorityBelowNormal(void)
 112 {
 113     DoSetPriority(BELOW_NORMAL_PRIORITY_CLASS);
 114 }
 115
 116 void ProcessPage_OnSetPriorityLow(void)
 117 {
 118     DoSetPriority(IDLE_PRIORITY_CLASS);
 119 }