reactos/rosapps/taskmgr/priority.cpp

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/*
* ReactOS Task Manager
*
* priority.cpp
*
* Copyright (C) 1999 - 2001 Brian Palmer <brianp@reactos.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "stdafx.h"
#include "taskmgr.h"
#include "priority.h"
#include "ProcessPage.h"
#include "perfdata.h"
void ProcessPage_OnSetPriorityRealTime(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
HANDLE hProcess;
TCHAR strErrorText[260];
for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return;
if (MessageBox(hMainWnd, "WARNING: Changing the priority class of this process may\ncause undesired results including system instability. Are you\nsure you want to change the priority class?", "Task Manager Warning", MB_YESNO|MB_ICONWARNING) != IDYES)
return;
hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
if (!hProcess)
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
return;
}
if (!SetPriorityClass(hProcess, REALTIME_PRIORITY_CLASS))
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
}
CloseHandle(hProcess);
}
void ProcessPage_OnSetPriorityHigh(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
HANDLE hProcess;
TCHAR strErrorText[260];
for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return;
if (MessageBox(hMainWnd, "WARNING: Changing the priority class of this process may\ncause undesired results including system instability. Are you\nsure you want to change the priority class?", "Task Manager Warning", MB_YESNO|MB_ICONWARNING) != IDYES)
return;
hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
if (!hProcess)
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
return;
}
if (!SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS))
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
}
CloseHandle(hProcess);
}
void ProcessPage_OnSetPriorityAboveNormal(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
HANDLE hProcess;
TCHAR strErrorText[260];
for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return;
if (MessageBox(hMainWnd, "WARNING: Changing the priority class of this process may\ncause undesired results including system instability. Are you\nsure you want to change the priority class?", "Task Manager Warning", MB_YESNO|MB_ICONWARNING) != IDYES)
return;
hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
if (!hProcess)
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
return;
}
if (!SetPriorityClass(hProcess, ABOVE_NORMAL_PRIORITY_CLASS))
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
}
CloseHandle(hProcess);
}
void ProcessPage_OnSetPriorityNormal(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
HANDLE hProcess;
TCHAR strErrorText[260];
for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return;
if (MessageBox(hMainWnd, "WARNING: Changing the priority class of this process may\ncause undesired results including system instability. Are you\nsure you want to change the priority class?", "Task Manager Warning", MB_YESNO|MB_ICONWARNING) != IDYES)
return;
hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
if (!hProcess)
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
return;
}
if (!SetPriorityClass(hProcess, NORMAL_PRIORITY_CLASS))
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
}
CloseHandle(hProcess);
}
void ProcessPage_OnSetPriorityBelowNormal(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
HANDLE hProcess;
TCHAR strErrorText[260];
for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return;
if (MessageBox(hMainWnd, "WARNING: Changing the priority class of this process may\ncause undesired results including system instability. Are you\nsure you want to change the priority class?", "Task Manager Warning", MB_YESNO|MB_ICONWARNING) != IDYES)
return;
hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
if (!hProcess)
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
return;
}
if (!SetPriorityClass(hProcess, BELOW_NORMAL_PRIORITY_CLASS))
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
}
CloseHandle(hProcess);
}
void ProcessPage_OnSetPriorityLow(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
HANDLE hProcess;
TCHAR strErrorText[260];
for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return;
if (MessageBox(hMainWnd, "WARNING: Changing the priority class of this process may\ncause undesired results including system instability. Are you\nsure you want to change the priority class?", "Task Manager Warning", MB_YESNO|MB_ICONWARNING) != IDYES)
return;
hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
if (!hProcess)
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
return;
}
if (!SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS))
{
GetLastErrorText(strErrorText, 260);
MessageBox(hMainWnd, strErrorText, "Unable to Change Priority", MB_OK|MB_ICONSTOP);
}
CloseHandle(hProcess);
}