1*25ea7f45SAndrew Rist /**************************************************************
2cdf0e10cSrcweir  *
3*25ea7f45SAndrew Rist  * Licensed to the Apache Software Foundation (ASF) under one
4*25ea7f45SAndrew Rist  * or more contributor license agreements.  See the NOTICE file
5*25ea7f45SAndrew Rist  * distributed with this work for additional information
6*25ea7f45SAndrew Rist  * regarding copyright ownership.  The ASF licenses this file
7*25ea7f45SAndrew Rist  * to you under the Apache License, Version 2.0 (the
8*25ea7f45SAndrew Rist  * "License"); you may not use this file except in compliance
9*25ea7f45SAndrew Rist  * with the License.  You may obtain a copy of the License at
10*25ea7f45SAndrew Rist  *
11*25ea7f45SAndrew Rist  *   http://www.apache.org/licenses/LICENSE-2.0
12*25ea7f45SAndrew Rist  *
13*25ea7f45SAndrew Rist  * Unless required by applicable law or agreed to in writing,
14*25ea7f45SAndrew Rist  * software distributed under the License is distributed on an
15*25ea7f45SAndrew Rist  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*25ea7f45SAndrew Rist  * KIND, either express or implied.  See the License for the
17*25ea7f45SAndrew Rist  * specific language governing permissions and limitations
18*25ea7f45SAndrew Rist  * under the License.
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21*25ea7f45SAndrew Rist 
22*25ea7f45SAndrew Rist 
23cdf0e10cSrcweir 
24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
25cdf0e10cSrcweir #include "precompiled_canvas.hxx"
26cdf0e10cSrcweir 
27cdf0e10cSrcweir 
28cdf0e10cSrcweir #ifdef WNT
29cdf0e10cSrcweir # if defined _MSC_VER
30cdf0e10cSrcweir # pragma warning(push,1)
31cdf0e10cSrcweir # endif
32cdf0e10cSrcweir 
33cdf0e10cSrcweir # include <windows.h>
34cdf0e10cSrcweir 
35cdf0e10cSrcweir # if defined _MSC_VER
36cdf0e10cSrcweir # pragma warning(pop)
37cdf0e10cSrcweir # endif
38cdf0e10cSrcweir #endif
39cdf0e10cSrcweir 
40cdf0e10cSrcweir #include "osl/diagnose.h"
41cdf0e10cSrcweir #include "canvas/prioritybooster.hxx"
42cdf0e10cSrcweir 
43cdf0e10cSrcweir 
44cdf0e10cSrcweir namespace canvas
45cdf0e10cSrcweir {
46cdf0e10cSrcweir     namespace tools
47cdf0e10cSrcweir     {
48cdf0e10cSrcweir         struct PriorityBooster_Impl
49cdf0e10cSrcweir         {
50cdf0e10cSrcweir             int mnOldPriority;
51cdf0e10cSrcweir         };
52cdf0e10cSrcweir 
PriorityBooster(sal_Int32 nDelta)53cdf0e10cSrcweir         PriorityBooster::PriorityBooster( sal_Int32 nDelta ) :
54cdf0e10cSrcweir             mpImpl( new PriorityBooster_Impl )
55cdf0e10cSrcweir         {
56cdf0e10cSrcweir #ifdef WNT
57cdf0e10cSrcweir             HANDLE aCurrThread = GetCurrentThread();
58cdf0e10cSrcweir             mpImpl->mnOldPriority = GetThreadPriority( aCurrThread );
59cdf0e10cSrcweir 
60cdf0e10cSrcweir             if ( 0 == SetThreadPriority( aCurrThread, mpImpl->mnOldPriority + nDelta ) )
61cdf0e10cSrcweir             {
62cdf0e10cSrcweir                 OSL_ENSURE( false,
63cdf0e10cSrcweir                             "PriorityBooster::PriorityBooster(): Was not able to modify thread priority" );
64cdf0e10cSrcweir             }
65cdf0e10cSrcweir #else
66cdf0e10cSrcweir             nDelta = 0; // #i55991# placate gcc warning
67cdf0e10cSrcweir #endif
68cdf0e10cSrcweir         }
69cdf0e10cSrcweir 
~PriorityBooster()70cdf0e10cSrcweir         PriorityBooster::~PriorityBooster()
71cdf0e10cSrcweir         {
72cdf0e10cSrcweir #ifdef WNT
73cdf0e10cSrcweir             SetThreadPriority( GetCurrentThread(),
74cdf0e10cSrcweir                                mpImpl->mnOldPriority );
75cdf0e10cSrcweir #endif
76cdf0e10cSrcweir         }
77cdf0e10cSrcweir 	} // namespace tools
78cdf0e10cSrcweir 
79cdf0e10cSrcweir } // namespace canvas
80