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Makes the TMS a sequence-point-generating JustInTimeActor.

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This commit is contained in:
Thomas Harte
2021-04-05 21:02:37 -04:00
parent bd1ea5740a
commit 1266bbb224
7 changed files with 33 additions and 40 deletions
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ClockReceiver/ClockReceiver.hpp
+8
View File
@@ -10,7 +10,9 @@
#define ClockReceiver_hpp
#include "ForceInline.hpp"
#include <cstdint>
#include <limits>
/*
Informal pattern for all classes that run from a clock cycle:
@@ -176,6 +178,9 @@ class Cycles: public WrappedInt<Cycles> {
public:
forceinline constexpr Cycles(IntType l) noexcept : WrappedInt<Cycles>(l) {}
forceinline constexpr Cycles() noexcept : WrappedInt<Cycles>() {}
forceinline static constexpr Cycles max() {
return Cycles(std::numeric_limits<IntType>::max());
}
private:
friend WrappedInt;
@@ -195,6 +200,9 @@ class HalfCycles: public WrappedInt<HalfCycles> {
public:
forceinline constexpr HalfCycles(IntType l) noexcept : WrappedInt<HalfCycles>(l) {}
forceinline constexpr HalfCycles() noexcept : WrappedInt<HalfCycles>() {}
forceinline static constexpr HalfCycles max() {
return HalfCycles(std::numeric_limits<IntType>::max());
}
forceinline constexpr HalfCycles(const Cycles &cycles) noexcept : WrappedInt<HalfCycles>(cycles.as_integral() * 2) {}
ClockReceiver/JustInTime.hpp
+9 -1
View File
@@ -105,7 +105,9 @@ template <class T, class LocalTimeScale = HalfCycles, int multiplier = 1, int di
if constexpr (has_sequence_points<T>::value) {
time_until_event_ -= rhs;
if(time_until_event_ <= LocalTimeScale(0)) {
time_overrun_ = time_until_event_;
flush();
update_sequence_point();
return true;
}
}
@@ -174,6 +176,12 @@ template <class T, class LocalTimeScale = HalfCycles, int multiplier = 1, int di
return did_flush;
}
/// @returns a number in the range [-max, 0] indicating the offset of the most recent sequence
/// point from the final time at the end of the += that triggered the sequence point.
[[nodiscard]] forceinline LocalTimeScale last_sequence_point_overrun() {
return time_overrun_;
}
/// @returns the number of cycles until the next sequence-point-based flush, if the embedded object
/// supports sequence points; @c LocalTimeScale() otherwise.
[[nodiscard]] LocalTimeScale cycles_until_implicit_flush() const {
@@ -203,7 +211,7 @@ template <class T, class LocalTimeScale = HalfCycles, int multiplier = 1, int di
private:
T object_;
LocalTimeScale time_since_update_, time_until_event_;
LocalTimeScale time_since_update_, time_until_event_, time_overrun_;
bool is_flushed_ = true;
bool did_flush_ = false;