LSSTApplications  10.0-2-g4f67435,11.0.rc2+1,11.0.rc2+12,11.0.rc2+3,11.0.rc2+4,11.0.rc2+5,11.0.rc2+6,11.0.rc2+7,11.0.rc2+8
LSSTDataManagementBasePackage
DevicePreference.cc
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1 // -*- LSST-C++ -*-
2 
3 /*
4  * LSST Data Management System
5  * Copyright 2008 - 2012 LSST Corporation.
6  *
7  * This product includes software developed by the
8  * LSST Project (http://www.lsst.org/).
9  *
10  * This program is free software: you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation, either version 3 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the LSST License Statement and
21  * the GNU General Public License along with this program. If not,
22  * see <http://www.lsstcorp.org/LegalNotices/>.
23  */
24 
41 #include <stdlib.h>
42 
43 namespace lsst {
44 namespace afw {
45 namespace gpu {
46 namespace {
47 
48 // globaly enables or disables GPU acceleration
49 // don't allow GPU acceleration until the constructor of EnvVarDisableGpuAcceleration is called
50 bool globalIsGpuEnabled = false;
51 
52 class EnvVarDisableGpuAcceleration
53 {
54 public:
55  bool val;
56 
57  EnvVarDisableGpuAcceleration()
58  {
59  const char *envVal = getenv("DISABLE_GPU_ACCELERATION");
60  if (envVal != NULL && atoi(envVal) == 1) {
61  val = true;
62  } else {
63  val = false;
64  globalIsGpuEnabled = true;
65  }
66  }
67 } const envVarDisableGpuAccelerationSingleton;
68 }
69 
70 void setGpuEnable(bool enable)
71 {
72  if (enable) {
73  if (!envVarDisableGpuAccelerationSingleton.val) {
74  globalIsGpuEnabled = true;
75  }
76  } else {
77  globalIsGpuEnabled = false;
78  }
79 }
80 
82 {
83  return globalIsGpuEnabled;
84 }
85 
86 }
87 }
88 } //namespace lsst::afw::gpu ends
89 
bool isGpuEnabled()
returns true if GPU acceleration is enabled
void setGpuEnable(bool enable)
Enables or disables GPU acceleration globally.
ImageT val
Definition: CR.cc:154