1 ///////////////////////////////////////////////////////////////////////////////
2 // LameXP - Audio Encoder Front-End
3 // Copyright (C) 2004-2023 LoRd_MuldeR <MuldeR2@GMX.de>
5 // This program is free software; you can redistribute it and/or modify
6 // it under the terms of the GNU GENERAL PUBLIC LICENSE as published by
7 // the Free Software Foundation; either version 2 of the License, or
8 // (at your option) any later version; always including the non-optional
9 // LAMEXP GNU GENERAL PUBLIC LICENSE ADDENDUM. See "License.txt" file!
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this program; if not, write to the Free Software Foundation, Inc.,
18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 // http://www.gnu.org/licenses/gpl-2.0.txt
21 ///////////////////////////////////////////////////////////////////////////////
24 #include "Thread_CPUObserver.h"
28 #include <MUtils/OSSupport.h>
29 #include <MUtils/Exception.h>
36 #define WIN32_LEAN_AND_MEAN
39 ////////////////////////////////////////////////////////////
40 // Constructor & Destructor
41 ////////////////////////////////////////////////////////////
43 CPUObserverThread::CPUObserverThread(void)
47 CPUObserverThread::~CPUObserverThread(void)
51 ////////////////////////////////////////////////////////////
52 // Protected functions
53 ////////////////////////////////////////////////////////////
55 void CPUObserverThread::run(void)
57 qDebug("CPU observer started!");
63 catch(const std::exception
&error
)
65 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nException error:\n%s\n", error
.what());
66 MUtils::OS::fatal_exit(L
"Unhandeled C++ exception error, application will exit!");
70 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nUnknown exception error!\n");
71 MUtils::OS::fatal_exit(L
"Unhandeled C++ exception error, application will exit!");
74 while(m_semaphore
.available()) m_semaphore
.tryAcquire();
77 ULONGLONG
CPUObserverThread::filetime2ulonglong(const void *ftime
)
79 ULARGE_INTEGER tmp
; tmp
.QuadPart
= 0UI
64;
80 const FILETIME
* fileTime
= reinterpret_cast<const FILETIME
*>(ftime
);
81 tmp
.LowPart
= fileTime
->dwLowDateTime
;
82 tmp
.HighPart
= fileTime
->dwHighDateTime
;
86 void CPUObserverThread::observe(void)
89 double previous
= -1.0;
90 FILETIME sysTime
, usrTime
, idlTime
;
91 ULONGLONG sys
[2], usr
[2], idl
[2];
93 for(size_t i
= 0; i
< 2; i
++)
95 sys
[i
] = 0; usr
[i
] = 0; idl
[i
] = 0;
100 if(GetSystemTimes(&idlTime
, &sysTime
, &usrTime
))
102 sys
[1] = sys
[0]; sys
[0] = filetime2ulonglong(&sysTime
);
103 usr
[1] = usr
[0]; usr
[0] = filetime2ulonglong(&usrTime
);
104 idl
[1] = idl
[0]; idl
[0] = filetime2ulonglong(&idlTime
);
109 emit
currentUsageChanged(1.0);
114 ULONGLONG timeIdl
= (idl
[0] - idl
[1]); //Idle time only
115 ULONGLONG timeSys
= (sys
[0] - sys
[1]); //Kernel mode time (incl. Idle time!)
116 ULONGLONG timeUsr
= (usr
[0] - usr
[1]); //User mode time only
118 ULONGLONG timeSum
= timeUsr
+ timeSys
; //Overall CPU time that has elapsed
119 ULONGLONG timeWrk
= timeSum
- timeIdl
; //Time the CPU spent working
123 double current
= static_cast<double>(timeWrk
) / static_cast<double>(timeSum
);
124 if(current
!= previous
)
126 emit
currentUsageChanged(current
);
132 if(m_semaphore
.tryAcquire(1, 2000)) break;
136 ////////////////////////////////////////////////////////////
138 ////////////////////////////////////////////////////////////
142 ////////////////////////////////////////////////////////////
144 ////////////////////////////////////////////////////////////