Module walkprofile 

Available on crate feature profiling only.

Where the engine half of a render goes, split finer than the backend seam.

Records, per render, the time spent in each of the walk’s own phases — clip resolution, colour resolution, glyph placement, image preparation, and the dispatch left over — and the allocations at each site in the walk that makes one, counted and sized.

Costs nothing when the profiling feature is off: every entry point compiles to an empty inline function. The accumulator is a thread-local, so a rayon render reports per-thread totals rather than a contended one, and take resets it.

Structs

Profile

Everything one render’s walk accumulated.

Enums

Phase

One phase of the walk’s engine-side work.

Site

One allocation site in the walk, named by what it allocates.

Functions

alloc

Record one allocation of bytes at site.

alloc_items

Record one allocation whose size is the capacity of a slice-shaped value.

phase

Run body and charge its elapsed time to phase.

phase_start

Start a phase, closed by the returned guard’s end.

take

Read the accumulator and clear it.