Qt Concurrent Qt Concurrent 모듈은 뮤텍스, 읽기-쓰기 잠금, 대기 조건 또는 세마포어와 같은 저수준 스레딩 프리미티브를 사용하지 않고도 멀티스레드 프로그램을 작성할 수 있는 고수준 API를 제공합니다. Qt Concurrent 으로 작성된 프로그램은 사용 가능한 프로세서 코어 수에 따라 사용되는 스레드 수를 자동으로 조정합니다. 즉, 오늘 작성된 애플리케이션은 향후 멀티코어 시스템에 배포할 때 계속 확장할 수 있습니다.
Qt Concurrent 에는 공유 메모리(비분산) 시스템을 위한 MapReduce 및 FilterReduce 구현과 GUI 애플리케이션에서 비동기 계산을 관리하기 위한 클래스 등 병렬 목록 처리를 위한 함수형 프로그래밍 스타일 API가 포함되어 있습니다:
void QTimer::start(std::chrono::milliseconds interval) Starts or restarts the timer with a timeout of duration interval milliseconds.
This is equivalent to:
timer.setInterval(interval); timer.start();
If the timer is already running, it will be stopped and restarted. This will also change its id().
If singleShot is true, the timer will be activated only once.
Starting from Qt 6.10, setting a negative interval will result in a run-time warning and the value being reset to 1ms. Before Qt 6.10 a Qt Timer would let you set a negative interval but behave in surprising ways (for example stop the timer if it was running or not start it at all).
It is very convenient to use this function because you do not need to bother with a timerEvent or create a local QTimer object.
If context is specified, then the functor will be called only if the context object has not been destroyed before the interval occurs. The functor will then be run the thread of context. The context's thread must have a running Qt event loop.
If functor is a member function of context, then the function will be called on the object.
The interval parameter can be an int (interpreted as a millisecond count) or a std::chrono type that implicitly converts to nanoseconds.
Starting from Qt 6.10, setting a negative interval will result in a run-time warning and the value being reset to 1ms. Before Qt 6.10 a Qt Timer would let you set a negative interval but behave in surprising ways (for example stop the timer if it was running or not start it at all).
// Note. The Q_OBJECT macro starts a private section. // To declare public members, use the 'public:' access modifier. public: Counter() { m_value = 0; }
17년 이후로 Nios ii gen 2로 바뀌면서 nios ii/s는 사라지고 f만 남은거 같은데
그러면 위에 ip-nios랑 ipr-nios는 f인가? 머지?
Nios II classic is offered in 3 different configurations: Nios II/f (fast), Nios II/s (standard), and Nios II/e (economy). Nios II gen2 is offered in 2 different configurations: Nios II/f (fast), and Nios II/e (economy).
Nios II/f
The Nios II/f core is designed for maximum performance at the expense of core size. Features of Nios II/f include:
Separate instruction and data caches (512 Bto 64 KB)
Optional JTAG debug module enhancements, including hardware breakpoints, data triggers, and real-time trace
Nios II/s
Nios II/s core is designed to maintain a balance between performance and cost. This core implementation is not longer supported for Altera Quartus II v.17 and newer. Features of Nios II/s include:
Optional JTAG debug module enhancements, including hardware breakpoints, data triggers, and real-time trace
Nios II/e
The Nios II/e core is designed for smallest possible logic utilization of FPGAs. This is especially efficient for low-cost Cyclone II FPGA applications. Features of Nios II/e include:
