ghc-trace-events: Faster traceEvent and traceMarker, and binary object logging for eventlog

[ bsd3, development, ghc, library, trace ] [ Propose Tags ]

ghc-trace-events provides faster traceEvent and traceMarker as well as arbitrary binary object logging for the eventlog framework. Unlike the eventlog tracing functions in base, all the tracing functions in this library don't evaluate the input if user event logging (the -lu flag) is disabled, which can give a significant boost in performance. Take a look at the benchmark suite for the details.

This library provies the following modules:

Drop-in replacements for the event tracing functions in Debug.Trace.
UTF-8 encoded Data.ByteString.ByteString variants of the event tracing functions. It's faster than the String variants.
Data.Text.Text variants of the event tracing functions in Debug.Trace. It's faster than the String variants.
Arbitary binary object logging available for GHC 8.8 or later. Unlike the other tracing functions Debug.Trace.Binary.traceBinaryEvent takes an arbitrary Data.ByteString.ByteString objects as opposed to UTF-8 encoded strings.

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Versions [RSS] 0.0.0,, 0.1.0,, 0.1.2,,,,,,,
Change log
Dependencies base (>=4.8 && <4.14), bytestring (>=0.9.2 && <0.11), text (>=1.0.0 && <1.3) [details]
License BSD-3-Clause
Copyright Copyright (C) 2018-2019 Mitsutoshi Aoe
Author Mitsutoshi Aoe
Maintainer Mitsutoshi Aoe <>
Category Development, GHC, Trace
Home page
Source repo head: git clone -b develop
Uploaded by MitsutoshiAoe at 2019-11-20T14:36:59Z
Distributions Arch:, LTSHaskell:, NixOS:, Stackage:
Reverse Dependencies 3 direct, 42 indirect [details]
Downloads 11215 total (5 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2019-11-20 [all 1 reports]

Readme for ghc-trace-events-0.1.0

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