Struct servo_config::opts::DebugOptions

pub struct DebugOptions {

    pub help: bool,
    pub bubble_inline_sizes_separately: bool,
    pub disable_text_antialiasing: bool,
    pub disable_subpixel_text_antialiasing: bool,
    pub disable_canvas_antialiasing: bool,
    pub dump_style_tree: bool,
    pub dump_rule_tree: bool,
    pub dump_flow_tree: bool,
    pub dump_stacking_context_tree: bool,
    pub dump_display_list: bool,
    pub dump_display_list_json: bool,
    pub relayout_event: bool,
    pub profile_script_events: bool,
    pub show_fragment_borders: bool,
    pub show_parallel_layout: bool,
    pub trace_layout: bool,
    pub disable_share_style_cache: bool,
    pub dump_style_statistics: bool,
    pub convert_mouse_to_touch: bool,
    pub replace_surrogates: bool,
    pub gc_profile: bool,
    pub load_webfonts_synchronously: bool,
    pub webrender_stats: bool,
    pub precache_shaders: bool,
    pub signpost: bool,
}

Debug options for Servo, currently set on the command line with -Z

Fields

help: bool

List all the debug options.

bubble_inline_sizes_separately: bool

True if we should bubble intrinsic widths sequentially. If this is true, then intrinsic widths are computed as a separate pass instead of during flow construction. You may wish to turn this flag on in order to benchmark style recalculation against other browser engines.

disable_text_antialiasing: bool

If set with disable-text-aa, disable antialiasing on fonts. This is primarily useful for reftests where pixel perfect results are required when using fonts such as the Ahem font for layout tests.

disable_subpixel_text_antialiasing: bool

Disable subpixel antialiasing of rendered text.

disable_canvas_antialiasing: bool

Disable antialiasing of rendered text on the HTML canvas element. If set with disable-canvas-aa, disable antialiasing on the HTML canvas element. Like disable-text-aa, this is useful for reftests where pixel perfect results are required.

dump_style_tree: bool

Print the DOM after each restyle.

dump_rule_tree: bool

Dumps the rule tree.

dump_flow_tree: bool

Print the flow tree (Layout 2013) or fragment tree (Layout 2020) after each layout.

dump_stacking_context_tree: bool

Print the stacking context tree after each layout.

dump_display_list: bool

Print the display list after each layout.

dump_display_list_json: bool

Print the display list in JSON form.

relayout_event: bool

Print notifications when there is a relayout.

profile_script_events: bool

Periodically print out on which events script threads spend their processing time.

show_fragment_borders: bool

Paint borders along fragment boundaries.

show_parallel_layout: bool

Mark which thread laid each flow out with colors.

trace_layout: bool

True if each step of layout is traced to an external JSON file for debugging purposes. Setting this implies sequential layout and paint.

disable_share_style_cache: bool

Disable the style sharing cache.

dump_style_statistics: bool

Whether to show in stdout style sharing cache stats after a restyle.

convert_mouse_to_touch: bool

Translate mouse input into touch events.

replace_surrogates: bool

Replace unpaires surrogates in DOM strings with U+FFFD. See https://github.com/servo/servo/issues/6564

gc_profile: bool

Log GC passes and their durations.

load_webfonts_synchronously: bool

Load web fonts synchronously to avoid non-deterministic network-driven reflows.

webrender_stats: bool

Show webrender profiling stats on screen.

precache_shaders: bool

True to compile all webrender shaders at init time. This is mostly useful when modifying the shaders, to ensure they all compile after each change is made.

signpost: bool

True to use OS native signposting facilities. This makes profiling events (script activity, reflow, compositing, etc.) appear in Instruments.app on macOS.

Implementations

impl DebugOptions

pub fn extend(&mut self, debug_string: String) -> Result<(), String>

fn print_usage(app: &str)

Trait Implementations

impl Clone for DebugOptions

fn clone(&self) -> DebugOptions

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DebugOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DebugOptions

fn default() -> DebugOptions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DebugOptions

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for DebugOptions

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.