#ifndef TIMER_H
#define TIMER_H

#include "aliases.h"

#ifndef MAX_PROFILE_SAMPLES
#define MAX_PROFILE_SAMPLES 1024
#endif // !MAX_PROFILE_SAMPLES

#ifdef ENABLE_PROFILING
#define PROFILE_START profile_start()
#define PROFILE_END profile_end()
#define SAMPLE_START(ID, TITLE) profiler_sample_t ID = sample_start(TITLE)
#define SAMPLE_END(ID) sample_end(&ID)
#else
#define PROFILE_START
#define PROFILE_END
#define SAMPLE_START(ID, TITLE)
#define SAMPLE_END(ID)
#endif // ENABLE_PROFILING

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
  const char *title;
  u64 start;
  u64 end;
} profiler_sample_t;

u64 get_os_frequency();

// Time in nanoseconds
u64 get_os_time(void);

// CPU timer using rdtsc
u64 read_cpu_timer(void);

// CPU frequency in hz/sec
u64 get_cpu_freq(u64 milliseconds);

void profile_start();
void profile_end();

profiler_sample_t sample_start(const char *title);
void sample_end(profiler_sample_t *sample);

#ifdef __cplusplus
}
#endif

#endif // !TIMER_H