ILSpy

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Author	SHA1	Message	Date
Christoph Wille	c8474419c4	Redesign DecompilerEventSource with Start/Stop tracing and keyword gating The events introduced in #2519 timed only the five per-entity DoDecompile overloads, allocated a Stopwatch and the member's FullName even when no trace session was attached, and reported whole milliseconds, which rounds almost every member to zero. Flat one-shot events also gave PerfView and dotnet-trace no way to show durations or nesting, and the actually expensive stages (type system initialization, assembly resolution probing, the IL/AST transform pipelines, whole-project decompilation) were not instrumented at all. Start/Stop event pairs let trace viewers derive duration and nesting from event timestamps, keywords let a session enable only the areas of interest, and every call site is gated on IsEnabled() so tracing costs a branch when disabled. Per-transform events are Verbose because of their volume; unlike the STEP/Stepper mechanism they work in Release builds. EventSource is in-box for netstandard2.0 and flows over both ETW and EventPipe, so this stays cross-platform with no new dependency. Assisted-by: Claude:claude-fable-5:Claude Code	2 months ago

Author

SHA1

Message

Date

Christoph Wille

c8474419c4

Redesign DecompilerEventSource with Start/Stop tracing and keyword gating

The events introduced in #2519 timed only the five per-entity DoDecompile
overloads, allocated a Stopwatch and the member's FullName even when no
trace session was attached, and reported whole milliseconds, which rounds
almost every member to zero. Flat one-shot events also gave PerfView and
dotnet-trace no way to show durations or nesting, and the actually
expensive stages (type system initialization, assembly resolution probing,
the IL/AST transform pipelines, whole-project decompilation) were not
instrumented at all.

Start/Stop event pairs let trace viewers derive duration and nesting from
event timestamps, keywords let a session enable only the areas of
interest, and every call site is gated on IsEnabled() so tracing costs a
branch when disabled. Per-transform events are Verbose because of their
volume; unlike the STEP/Stepper mechanism they work in Release builds.
EventSource is in-box for netstandard2.0 and flows over both ETW and
EventPipe, so this stays cross-platform with no new dependency.

Assisted-by: Claude:claude-fable-5:Claude Code

2 months ago

1 Commits (8a9dd8b0535f08dceb5dff8a747f886eecd7d243)