A high-resolution periodic timer. More...
#include <juce_HighResolutionTimer.h>
Classes | |
struct | Pimpl |
Public Member Functions | |
virtual | ~HighResolutionTimer () |
Destructor. More... | |
int | getTimerInterval () const noexcept |
Returns the timer's interval. More... | |
virtual void | hiResTimerCallback ()=0 |
The user-defined callback routine that actually gets called periodically. More... | |
bool | isTimerRunning () const noexcept |
Checks if the timer has been started. More... | |
void | startTimer (int intervalInMilliseconds) |
Starts the timer and sets the length of interval required. More... | |
void | stopTimer () |
Stops the timer. More... | |
Protected Member Functions | |
HighResolutionTimer () | |
Creates a HighResolutionTimer. More... | |
Private Attributes | |
std::unique_ptr< Pimpl > | pimpl |
A high-resolution periodic timer.
This provides accurately-timed regular callbacks. Unlike the normal Timer class, this one uses a dedicated thread, not the message thread, so is far more stable and precise.
You should only use this class in situations where you really need accuracy, because unlike the normal Timer class, which is very lightweight and cheap to start/stop, the HighResolutionTimer will use far more resources, and starting/stopping it may involve launching and killing threads.
@tags{Core}
|
protected |
Creates a HighResolutionTimer.
When created, the timer is stopped, so use startTimer() to get it going.
|
virtual |
Destructor.
|
noexcept |
Returns the timer's interval.
|
pure virtual |
The user-defined callback routine that actually gets called periodically.
This will be called on a dedicated timer thread, so make sure your implementation is thread-safe!
It's perfectly ok to call startTimer() or stopTimer() from within this callback to change the subsequent intervals.
Referenced by juce::HighResolutionTimer::Pimpl::start().
|
noexcept |
Checks if the timer has been started.
void juce::HighResolutionTimer::startTimer | ( | int | intervalInMilliseconds | ) |
Starts the timer and sets the length of interval required.
If the timer is already started, this will reset its counter, so the time between calling this method and the next timer callback will not be less than the interval length passed in.
intervalInMilliseconds | the interval to use (any values less than 1 will be rounded up to 1) |
void juce::HighResolutionTimer::stopTimer | ( | ) |
Stops the timer.
This method may block while it waits for pending callbacks to complete. Once it returns, no more callbacks will be made. If it is called from the timer's own thread, it will cancel the timer after the current callback returns.
|
private |