100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
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// File: lzham_timer.h
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// See Copyright Notice and license at the end of include/lzham.h
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#pragma once
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namespace lzham
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{
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typedef unsigned long long timer_ticks;
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class lzham_timer
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{
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public:
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lzham_timer();
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lzham_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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enum var_args_t { cVarArgs };
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#if LZHAM_PERF_SECTIONS
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class scoped_perf_section
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{
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public:
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inline scoped_perf_section() :
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m_start_ticks(lzham_timer::get_ticks())
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{
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m_name[0] = '?';
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m_name[1] = '\0';
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}
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inline scoped_perf_section(const char *pName) :
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m_start_ticks(lzham_timer::get_ticks())
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{
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strcpy_s(m_name, pName);
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lzham_buffered_printf("Thread: 0x%08X, BEGIN Time: %3.3fms, Section: %s\n", GetCurrentThreadId(), lzham_timer::ticks_to_ms(m_start_ticks), m_name);
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}
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inline scoped_perf_section(var_args_t, const char *pName, ...) :
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m_start_ticks(lzham_timer::get_ticks())
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{
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va_list args;
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va_start(args, pName);
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vsprintf_s(m_name, sizeof(m_name), pName, args);
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va_end(args);
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lzham_buffered_printf("Thread: 0x%08X, BEGIN Time: %3.3fms, Section: %s\n", GetCurrentThreadId(), lzham_timer::ticks_to_ms(m_start_ticks), m_name);
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}
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inline ~scoped_perf_section()
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{
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double end_ms = lzham_timer::get_ms();
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double start_ms = lzham_timer::ticks_to_ms(m_start_ticks);
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lzham_buffered_printf("Thread: 0x%08X, END Time: %3.3fms, Total: %3.3fms, Section: %s\n", GetCurrentThreadId(), end_ms, end_ms - start_ms, m_name);
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}
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private:
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char m_name[64];
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timer_ticks m_start_ticks;
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};
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#else
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class scoped_perf_section
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{
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public:
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inline scoped_perf_section() { }
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inline scoped_perf_section(const char *pName) { (void)pName; }
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inline scoped_perf_section(var_args_t, const char *pName, ...) { (void)pName; }
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};
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#endif // LZHAM_PERF_SECTIONS
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} // namespace lzham
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