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gfx: Measure text shaping time in the time profiler.

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Patrick Walton 2015-12-15 13:27:42 -08:00
parent 072222e69e
commit df93b1f194
5 changed files with 54 additions and 6 deletions
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18
components/gfx/font.rs
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@ -14,14 +14,18 @@ use std::cell::RefCell;
use std::rc::Rc;
use std::str;
use std::sync::Arc;
use std::sync::atomic::{ATOMIC_USIZE_INIT, AtomicUsize, Ordering};
use style::computed_values::{font_stretch, font_variant, font_weight};
use style::properties::style_structs::Font as FontStyle;
use text::Shaper;
use text::glyph::{GlyphId, GlyphStore};
use text::shaping::ShaperMethods;
use time;
use unicode_script::Script;
use util::cache::HashCache;
static TEXT_SHAPING_PERFORMANCE_COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
// FontHandle encapsulates access to the platform's font API,
// e.g. quartz, FreeType. It provides access to metrics and tables
// needed by the text shaper as well as access to the underlying font
@ -145,6 +149,8 @@ impl Font {
return glyphs.clone();
}
let start_time = time::precise_time_ns();
let mut glyphs = GlyphStore::new(text.chars().count(),
options.flags.contains(IS_WHITESPACE_SHAPING_FLAG),
options.flags.contains(RTL_FLAG));
@ -155,6 +161,11 @@ impl Font {
text: text.to_owned(),
options: *options,
}, glyphs.clone());
let end_time = time::precise_time_ns();
TEXT_SHAPING_PERFORMANCE_COUNTER.fetch_add((end_time - start_time) as usize,
Ordering::Relaxed);
glyphs
}
@ -245,3 +256,10 @@ impl RunMetrics {
}
}
}
pub fn get_and_reset_text_shaping_performance_counter() -> usize {
let value = TEXT_SHAPING_PERFORMANCE_COUNTER.load(Ordering::SeqCst);
TEXT_SHAPING_PERFORMANCE_COUNTER.store(0, Ordering::SeqCst);
value
}