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// File: lzham_timer.h
// See Copyright Notice and license at the end of include/lzham.h
#pragma once
namespace lzham
{
typedef unsigned long long timer_ticks;
class lzham_timer
{
public:
lzham_timer();
lzham_timer(timer_ticks start_ticks);
void start();
void start(timer_ticks start_ticks);
void stop();
double get_elapsed_secs() const;
inline double get_elapsed_ms() const { return get_elapsed_secs() * 1000.0f; }
timer_ticks get_elapsed_us() const;
static void init();
static inline timer_ticks get_ticks_per_sec() { return g_freq; }
static timer_ticks get_init_ticks();
static timer_ticks get_ticks();
static double ticks_to_secs(timer_ticks ticks);
static inline double ticks_to_ms(timer_ticks ticks) { return ticks_to_secs(ticks) * 1000.0f; }
static inline double get_secs() { return ticks_to_secs(get_ticks()); }
static inline double get_ms() { return ticks_to_ms(get_ticks()); }
private:
static timer_ticks g_init_ticks;
static timer_ticks g_freq;
static double g_inv_freq;
timer_ticks m_start_time;
timer_ticks m_stop_time;
bool m_started : 1;
bool m_stopped : 1;
};
enum var_args_t { cVarArgs };
#if LZHAM_PERF_SECTIONS
class scoped_perf_section
{
public:
inline scoped_perf_section() :
m_start_ticks(lzham_timer::get_ticks())
{
m_name[0] = '?';
m_name[1] = '\0';
}
inline scoped_perf_section(const char *pName) :
m_start_ticks(lzham_timer::get_ticks())
{
strcpy_s(m_name, pName);
lzham_buffered_printf("Thread: 0x%08X, BEGIN Time: %3.3fms, %s\n", GetCurrentThreadId(), lzham_timer::ticks_to_ms(m_start_ticks), m_name);
}
inline scoped_perf_section(var_args_t, const char *pName, ...) :
m_start_ticks(lzham_timer::get_ticks())
{
va_list args;
va_start(args, pName);
vsprintf_s(m_name, sizeof(m_name), pName, args);
va_end(args);
lzham_buffered_printf("Thread: 0x%08X, BEGIN Time: %3.3fms, %s\n", GetCurrentThreadId(), lzham_timer::ticks_to_ms(m_start_ticks), m_name);
}
inline ~scoped_perf_section()
{
double end_ms = lzham_timer::get_ms();
double start_ms = lzham_timer::ticks_to_ms(m_start_ticks);
lzham_buffered_printf("Thread: 0x%08X, END Time: %3.3fms, %s, Total: %3.3fms\n", GetCurrentThreadId(), end_ms, m_name, end_ms - start_ms);
}
private:
char m_name[64];
timer_ticks m_start_ticks;
};
#else
class scoped_perf_section
{
public:
inline scoped_perf_section() { }
inline scoped_perf_section(const char *pName) { (void)pName; }
inline scoped_perf_section(var_args_t, const char *pName, ...) { (void)pName; }
};
#endif // LZHAM_PERF_SECTIONS
} // namespace lzham
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