Screen display metric count types

Types of metric counts for displays

Synopsis:

#include <screen/screen.h>

enum {
    SCREEN_DISPLAY_METRIC_ATTACH_COUNT = 0,
    SCREEN_DISPLAY_METRIC_POWER_ON_COUNT = 1,
    SCREEN_DISPLAY_METRIC_IDLE_COUNT = 2,
    SCREEN_DISPLAY_METRIC_EVENT_COUNT = 3,
    SCREEN_DISPLAY_METRIC_UPDATE_COUNT = 4,
    SCREEN_DISPLAY_METRIC_UPDATE_PIXELS = 5,
    SCREEN_DISPLAY_METRIC_UPDATE_READS = 6,
    SCREEN_DISPLAY_METRIC_UPDATE_WRITES = 7
};

Data:

SCREEN_DISPLAY_METRIC_ATTACH_COUNT: The number of times the display has been attached (connected) since the last time Screen display metrics were queried.
SCREEN_DISPLAY_METRIC_POWER_ON_COUNT: The number of times the display has been powered on since the last time Screen display metrics were queried.
SCREEN_DISPLAY_METRIC_IDLE_COUNT: The number of times the display has been in idle state since the last time Screen display metrics were queried.
SCREEN_DISPLAY_METRIC_EVENT_COUNT: The number of input events that has been focused (or sent) to the display since the last time Screen display metrics were queried.
SCREEN_DISPLAY_METRIC_UPDATE_COUNT: The number of times that the framebuffer of the display has been updated since the last time Screen display metrics were queried.
SCREEN_DISPLAY_METRIC_UPDATE_PIXELS: The number of pixels that the framebuffer of the display has updated since the last time Screen display metrics were queried.
SCREEN_DISPLAY_METRIC_UPDATE_READS: The number of bytes that has been read from the framebuffer of the display since the last time Screen display metrics have been queried.; The number of bytes read is an estimation calculated based on the number of pixels updated by the framebuffer.
SCREEN_DISPLAY_METRIC_UPDATE_WRITES: The number of bytes that has been written to the framebuffer of the display since the last time Screen display metrics have been queried.; The number of bytes written is an estimation calculated based on the number of pixels updated by the framebuffer.

Library:

libscreen

Description:

The metrics are on a per display basis and the counts are reset after being queried. That is, the counts are reset to 0 after you call screen get_display_property_llv() to retrieve SCREEN_PROPERTY_METRICS.