Jamie Smith / AccurateWaiter

AccurateWaiter allows threaded applications to have threads wait for a precise amount of time, without sending the CPU into a permanent spinlock.

Dependents:   AccurateWaiter-Test

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AccurateWaiter.cpp

00001 //
00002 // Created by jamie on 11/12/2020.
00003 //
00004 
00005 #include "AccurateWaiter.h"
00006 
00007 AccurateWaiter::AccurateWaiter():
00008 TimerEvent(get_us_ticker_data())
00009 {
00010 
00011 }
00012 
00013 
00014 void AccurateWaiter::handler()
00015 {
00016     // This signals the RTOS that the waiting thread is ready to wake up.
00017     flags.set(1);
00018 }
00019 
00020 void AccurateWaiter::wait_for(std::chrono::microseconds duration)
00021 {
00022     // set up timer event to occur
00023     insert(duration);
00024 
00025     // wait for event flag and then clear it
00026     flags.wait_all(1);
00027 }
00028 
00029 void AccurateWaiter::wait_until(TickerDataClock::time_point timePoint)
00030 {
00031     // set up timer event to occur
00032     insert_absolute(timePoint);
00033 
00034     // wait for event flag and then clear it
00035     flags.wait_all(1);
00036 }
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