Squashed 'third_party/allwpilib_2017/' content from commit 35ac87d
Change-Id: I7bb6f5556c30d3f5a092e68de0be9c710c60c9f4
git-subtree-dir: third_party/allwpilib_2017
git-subtree-split: 35ac87d6ff8b7f061c4f18c9ea316e5dccd4888a
diff --git a/wpilibc/shared/include/Timer.h b/wpilibc/shared/include/Timer.h
new file mode 100644
index 0000000..c71e3c8
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+++ b/wpilibc/shared/include/Timer.h
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+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008-2017. All Rights Reserved. */
+/* Open Source Software - may be modified and shared by FRC teams. The code */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project. */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Base.h"
+#include "HAL/cpp/priority_mutex.h"
+
+namespace frc {
+
+typedef void (*TimerInterruptHandler)(void* param);
+
+void Wait(double seconds);
+double GetClock();
+double GetTime();
+
+/**
+ * Timer objects measure accumulated time in seconds.
+ * The timer object functions like a stopwatch. It can be started, stopped, and
+ * cleared. When the timer is running its value counts up in seconds. When
+ * stopped, the timer holds the current value. The implementation simply records
+ * the time when started and subtracts the current time whenever the value is
+ * requested.
+ */
+class Timer {
+ public:
+ Timer();
+ virtual ~Timer() = default;
+
+ Timer(const Timer&) = delete;
+ Timer& operator=(const Timer&) = delete;
+
+ double Get() const;
+ void Reset();
+ void Start();
+ void Stop();
+ bool HasPeriodPassed(double period);
+
+ static double GetFPGATimestamp();
+ static double GetPPCTimestamp();
+ static double GetMatchTime();
+
+ // The time, in seconds, at which the 32-bit FPGA timestamp rolls over to 0
+ static const double kRolloverTime;
+
+ private:
+ double m_startTime = 0.0;
+ double m_accumulatedTime = 0.0;
+ bool m_running = false;
+ mutable priority_mutex m_mutex;
+};
+
+} // namespace frc