64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
// File: crn_win32_timer.h
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// See Copyright Notice and license at the end of inc/crnlib.h
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#pragma once
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namespace crnlib
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{
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typedef unsigned long long timer_ticks;
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class timer
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{
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public:
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timer();
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timer(timer_ticks start_ticks);
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void start();
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void start(timer_ticks start_ticks);
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void stop();
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double get_elapsed_secs() const;
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inline double get_elapsed_ms() const { return get_elapsed_secs() * 1000.0f; }
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timer_ticks get_elapsed_us() const;
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static void init();
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static inline timer_ticks get_ticks_per_sec() { return g_freq; }
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static timer_ticks get_init_ticks();
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static timer_ticks get_ticks();
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static double ticks_to_secs(timer_ticks ticks);
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static inline double ticks_to_ms(timer_ticks ticks) { return ticks_to_secs(ticks) * 1000.0f; }
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static inline double get_secs() { return ticks_to_secs(get_ticks()); }
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static inline double get_ms() { return ticks_to_ms(get_ticks()); }
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private:
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static timer_ticks g_init_ticks;
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static timer_ticks g_freq;
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static double g_inv_freq;
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timer_ticks m_start_time;
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timer_ticks m_stop_time;
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bool m_started : 1;
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bool m_stopped : 1;
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};
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// Prints object's lifetime to stdout
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class timed_scope
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{
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const char* m_pName;
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timer m_tm;
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public:
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inline timed_scope(char* pName = "timed_scope") : m_pName(pName) { m_tm.start(); }
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inline double get_elapsed_secs() const { return m_tm.get_elapsed_secs(); }
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inline double get_elapsed_ms() const { return m_tm.get_elapsed_ms(); }
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const timer &get_timer() const { return m_tm; }
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timer &get_timer() { return m_tm; }
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inline ~timed_scope() { double secs = m_tm.get_elapsed_secs(); printf("%s: %f secs, %f ms\n", m_pName, secs, secs * 1000.0f); }
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};
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} // namespace crnlib
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