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C++/Qt - QThread vs QRunnable
What are the differences between QThreads and QRunnable ?
When should I use QThread and when QRunnable ?
c++ qt concurrency qthread
edited Nov 2 '17 at 13:28
sandwood
922720
asked May 28 '13 at 12:15
CDTCDT
3,067114477
add a comment |
What are the differences between QThreads and QRunnable ?
When should I use QThread and when QRunnable ?
c++ qt concurrency qthread
edited Nov 2 '17 at 13:28
sandwood
922720
asked May 28 '13 at 12:15
CDTCDT
3,067114477
A very good talk about multithreading in Qt (they explain QThread, QRunnable, QThreadPool, cross-threads signal-slots, etc.) was given at Qt DevDays 2011. Videos can be found here: Part 1, Part 2.
– leemes
May 28 '13 at 12:24
add a comment |
What are the differences between QThreads and QRunnable ?
When should I use QThread and when QRunnable ?
c++ qt concurrency qthread
edited Nov 2 '17 at 13:28
sandwood
922720
asked May 28 '13 at 12:15
CDTCDT
3,067114477
What are the differences between QThreads and QRunnable ?
When should I use QThread and when QRunnable ?
c++ qt concurrency qthread
c++ qt concurrency qthread
edited Nov 2 '17 at 13:28
sandwood
922720
asked May 28 '13 at 12:15
CDTCDT
3,067114477
edited Nov 2 '17 at 13:28
sandwood
922720
asked May 28 '13 at 12:15
CDTCDT
3,067114477
edited Nov 2 '17 at 13:28
sandwood
922720
edited Nov 2 '17 at 13:28
sandwood
922720
edited Nov 2 '17 at 13:28
sandwood
922720
922720
asked May 28 '13 at 12:15
CDTCDT
3,067114477
asked May 28 '13 at 12:15
CDTCDT
3,067114477
asked May 28 '13 at 12:15
CDTCDT
3,067114477
3,067114477
A very good talk about multithreading in Qt (they explain QThread, QRunnable, QThreadPool, cross-threads signal-slots, etc.) was given at Qt DevDays 2011. Videos can be found here: Part 1, Part 2.
– leemes
May 28 '13 at 12:24
add a comment |
A very good talk about multithreading in Qt (they explain QThread, QRunnable, QThreadPool, cross-threads signal-slots, etc.) was given at Qt DevDays 2011. Videos can be found here: Part 1, Part 2.
– leemes
May 28 '13 at 12:24
A very good talk about multithreading in Qt (they explain QThread, QRunnable, QThreadPool, cross-threads signal-slots, etc.) was given at Qt DevDays 2011. Videos can be found here: Part 1, Part 2.
– leemes
May 28 '13 at 12:24
A very good talk about multithreading in Qt (they explain QThread, QRunnable, QThreadPool, cross-threads signal-slots, etc.) was given at Qt DevDays 2011. Videos can be found here: Part 1, Part 2.
– leemes
May 28 '13 at 12:24
add a comment |
2 Answers
2
active
oldest
votes
The QRunnable class and the QtConcurrent::run() function are well suited to situations where we want to perform some background processing in one or more
secondary threads without needing the full power and flexibility provided by
QThread.
from "Advanced Qt Programming: Creating Great Software with C++ and Qt 4" by Mark Summerfield
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
6
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
add a comment |
QThread can run an event loop, QRunnable doesn't have one so don't use it for tasks designed to have an event loop. Also, not being a QObject, QRunnable has no built-in means of explicitly communicating something to other components; you have to code that by hand, using low-level threading primitives (like a mutex-guarded queue for collecting results, etc.). Using QThread you can use signals and slots which are thread safe.
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The QRunnable class and the QtConcurrent::run() function are well suited to situations where we want to perform some background processing in one or more
secondary threads without needing the full power and flexibility provided by
QThread.
from "Advanced Qt Programming: Creating Great Software with C++ and Qt 4" by Mark Summerfield
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
6
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
add a comment |
The QRunnable class and the QtConcurrent::run() function are well suited to situations where we want to perform some background processing in one or more
secondary threads without needing the full power and flexibility provided by
QThread.
from "Advanced Qt Programming: Creating Great Software with C++ and Qt 4" by Mark Summerfield
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
6
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
add a comment |
The QRunnable class and the QtConcurrent::run() function are well suited to situations where we want to perform some background processing in one or more
secondary threads without needing the full power and flexibility provided by
QThread.
from "Advanced Qt Programming: Creating Great Software with C++ and Qt 4" by Mark Summerfield
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
The QRunnable class and the QtConcurrent::run() function are well suited to situations where we want to perform some background processing in one or more
secondary threads without needing the full power and flexibility provided by
QThread.
from "Advanced Qt Programming: Creating Great Software with C++ and Qt 4" by Mark Summerfield
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
answered May 28 '13 at 12:28
Erik KajuErik Kaju
2,77631225
2,77631225
6
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
add a comment |
6
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
6
6
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
This answer would be useful if it explained "full power and flexibility provided by QThread", because it suggests you should default to using QRunnable, and use QThread only when you need... What? Signals? An event loop? Etc.
– Oliver
Dec 2 '16 at 3:47
add a comment |
QThread can run an event loop, QRunnable doesn't have one so don't use it for tasks designed to have an event loop. Also, not being a QObject, QRunnable has no built-in means of explicitly communicating something to other components; you have to code that by hand, using low-level threading primitives (like a mutex-guarded queue for collecting results, etc.). Using QThread you can use signals and slots which are thread safe.
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
add a comment |
QThread can run an event loop, QRunnable doesn't have one so don't use it for tasks designed to have an event loop. Also, not being a QObject, QRunnable has no built-in means of explicitly communicating something to other components; you have to code that by hand, using low-level threading primitives (like a mutex-guarded queue for collecting results, etc.). Using QThread you can use signals and slots which are thread safe.
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
add a comment |
QThread can run an event loop, QRunnable doesn't have one so don't use it for tasks designed to have an event loop. Also, not being a QObject, QRunnable has no built-in means of explicitly communicating something to other components; you have to code that by hand, using low-level threading primitives (like a mutex-guarded queue for collecting results, etc.). Using QThread you can use signals and slots which are thread safe.
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
QThread can run an event loop, QRunnable doesn't have one so don't use it for tasks designed to have an event loop. Also, not being a QObject, QRunnable has no built-in means of explicitly communicating something to other components; you have to code that by hand, using low-level threading primitives (like a mutex-guarded queue for collecting results, etc.). Using QThread you can use signals and slots which are thread safe.
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
edited Nov 19 '18 at 20:57
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
answered Nov 19 '18 at 18:21
Alexandra AnghelescuAlexandra Anghelescu
6114
6114
add a comment |
add a comment |
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A very good talk about multithreading in Qt (they explain QThread, QRunnable, QThreadPool, cross-threads signal-slots, etc.) was given at Qt DevDays 2011. Videos can be found here: Part 1, Part 2.
– leemes
May 28 '13 at 12:24