1 ///////////////////////////////////////////////////////////////////////////////
2 // LameXP - Audio Encoder Front-End
3 // Copyright (C) 2004-2014 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, but always including the *additional*
9 // restrictions defined in the "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 ///////////////////////////////////////////////////////////////////////////////
23 #include "Thread_CPUObserver.h"
30 #define WIN32_LEAN_AND_MEAN
33 ////////////////////////////////////////////////////////////
34 // Constructor & Destructor
35 ////////////////////////////////////////////////////////////
37 CPUObserverThread::CPUObserverThread(void)
41 CPUObserverThread::~CPUObserverThread(void)
45 ////////////////////////////////////////////////////////////
46 // Protected functions
47 ////////////////////////////////////////////////////////////
49 void CPUObserverThread::run(void)
51 qDebug("CPU observer started!");
57 catch(const std::exception
&error
)
59 PRINT_ERROR("\nGURU MEDITATION !!!\n\nException error:\n%s\n", error
.what());
60 lamexp_fatal_exit("Unhandeled C++ exception error, application will exit!");
64 PRINT_ERROR("\nGURU MEDITATION !!!\n\nUnknown exception error!\n");
65 lamexp_fatal_exit("Unhandeled C++ exception error, application will exit!");
68 while(m_semaphore
.available()) m_semaphore
.tryAcquire();
71 ULONGLONG
CPUObserverThread::filetime2ulonglong(const void *ftime
)
73 ULARGE_INTEGER tmp
; tmp
.QuadPart
= 0UI
64;
74 const FILETIME
* fileTime
= reinterpret_cast<const FILETIME
*>(ftime
);
75 tmp
.LowPart
= fileTime
->dwLowDateTime
;
76 tmp
.HighPart
= fileTime
->dwHighDateTime
;
80 void CPUObserverThread::observe(void)
83 double previous
= -1.0;
84 FILETIME sysTime
, usrTime
, idlTime
;
85 ULONGLONG sys
[2], usr
[2], idl
[2];
87 for(size_t i
= 0; i
< 2; i
++)
89 sys
[i
] = 0; usr
[i
] = 0; idl
[i
] = 0;
94 if(GetSystemTimes(&idlTime
, &sysTime
, &usrTime
))
96 sys
[1] = sys
[0]; sys
[0] = filetime2ulonglong(&sysTime
);
97 usr
[1] = usr
[0]; usr
[0] = filetime2ulonglong(&usrTime
);
98 idl
[1] = idl
[0]; idl
[0] = filetime2ulonglong(&idlTime
);
103 emit
currentUsageChanged(1.0);
108 ULONGLONG timeIdl
= (idl
[0] - idl
[1]); //Idle time only
109 ULONGLONG timeSys
= (sys
[0] - sys
[1]); //Kernel mode time (incl. Idle time!)
110 ULONGLONG timeUsr
= (usr
[0] - usr
[1]); //User mode time only
112 ULONGLONG timeSum
= timeUsr
+ timeSys
; //Overall CPU time that has elapsed
113 ULONGLONG timeWrk
= timeSum
- timeIdl
; //Time the CPU spent working
117 double current
= static_cast<double>(timeWrk
) / static_cast<double>(timeSum
);
118 if(current
!= previous
)
120 emit
currentUsageChanged(current
);
126 if(m_semaphore
.tryAcquire(1, 2000)) break;
130 ////////////////////////////////////////////////////////////
132 ////////////////////////////////////////////////////////////
136 ////////////////////////////////////////////////////////////
138 ////////////////////////////////////////////////////////////