perf_watch.h

Go to the documentation of this file.

#pragma once
 
#include <stdbool.h>
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif

#define PERF_WINDOW_FRAMES 300u

#define PERF_LOWS_MAX      48u

#define PERF_LOWS_NAME     16u

typedef struct {
    uint32_t min_us;        
    uint32_t max_us;        
    uint64_t sum_us;        
} perf_span_t;

typedef struct {
    int         screen;     
    uint32_t    frames;     
    perf_span_t draw;       
    perf_span_t wait;       
    perf_span_t turn;       
} perf_window_t;

void perf_window_start(perf_window_t *w, int screen);

void perf_window_add(perf_window_t *w, int screen, uint32_t draw_us,
                     uint32_t wait_us, uint32_t turn_us);

uint32_t perf_span_mean_us(const perf_span_t *s, uint32_t frames);

typedef struct {
    char     name[PERF_LOWS_NAME];  
    uint32_t least;                 
} perf_low_t;

typedef struct {
    perf_low_t rows[PERF_LOWS_MAX]; 
    uint32_t   count;               
    uint32_t   dropped;             
    uint64_t   due;                 
} perf_lows_t;

void perf_lows_init(perf_lows_t *t);

void perf_name_copy(char dst[PERF_LOWS_NAME], const char *name);

bool perf_lows_note(perf_lows_t *t, const char *name, uint32_t least);

int perf_lows_take(perf_lows_t *t);

typedef enum {
    PERF_LINE_RATE,         
    PERF_LINE_WINDOW,       
    PERF_LINE_LOW,          
} perf_line_t;

perf_line_t perf_line_due(uint32_t frames);
 
#ifdef __cplusplus
}
#endif