clang::clangd::trace::EventTracer Class Reference

A consumer of trace events and measurements. More...

#include <Trace.h>

Inheritance diagram for clang::clangd::trace::EventTracer:

Public Member Functions
virtual	~EventTracer ()=default
virtual Context	beginSpan (llvm::StringRef Name, llvm::function_ref< void(llvm::json::Object *)> AttachDetails)
	Called when event that has a duration starts.
virtual void	endSpan ()
virtual void	instant (llvm::StringRef Name, llvm::json::Object &&Args)
	Called for instant events.
virtual void	record (const Metric &Metric, double Value, llvm::StringRef Label)
	Called whenever a metrics records a measurement.

Detailed Description

A consumer of trace events and measurements.

The events are produced by Spans and trace::log, the measurements are produced by Metrics::record. Implementations of this interface must be thread-safe.

Definition at line 74 of file Trace.h.

Constructor & Destructor Documentation

~EventTracer()

virtual clang::clangd::trace::EventTracer::~EventTracer ( )

virtualdefault

Member Function Documentation

beginSpan()

Context clang::clangd::trace::EventTracer::beginSpan ( llvm::StringRef Name, llvm::function_ref< void(llvm::json::Object *)> AttachDetails )

virtual

Called when event that has a duration starts.

Name describes the event. Returns a derived context that will be destroyed when the event ends. Usually implementations will store an object in the returned context whose destructor records the end of the event. The tracer may capture event details provided in SPAN_ATTACH() calls. In this case it should call AttachDetails(), and pass in an empty Object to hold them. This Object should be owned by the context, and the data will be complete by the time the context is destroyed.

Definition at line 337 of file Trace.cpp.

References clang::clangd::Context::clone(), and clang::clangd::Context::current().

endSpan()

virtual void clang::clangd::trace::EventTracer::endSpan ( )

inlinevirtual

Definition at line 94 of file Trace.h.

instant()

virtual void clang::clangd::trace::EventTracer::instant ( llvm::StringRef Name, llvm::json::Object && Args )

inlinevirtual

Called for instant events.

Definition at line 97 of file Trace.h.

record()

virtual void clang::clangd::trace::EventTracer::record ( const Metric & Metric, double Value, llvm::StringRef Label )

inlinevirtual

Called whenever a metrics records a measurement.

Reimplemented in clang::clangd::trace::TestTracer.

Definition at line 100 of file Trace.h.

References clang::clangd::Label, and clang::clangd::Value.

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The documentation for this class was generated from the following files:

• Trace.h
• Trace.cpp