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CHANGES.md

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0.7

  • feat: add levels to Trace_core. Levels are similar to logs levels, to help control verbosity.

  • add hmap as a depopt (#28)

  • fix: truncate large strings in fuchsia

0.6

  • add ppx_trace for easier instrumentation.
    • let%trace span = "foo" in … will enter a scope span named "foo"
    • let%trace () = "foo" in … will enter a scope named "foo" with a hidden name
  • add trace-fuchsia backend, which produces traces in the binary format of fuchsia. These traces are reasonably efficient to produce (~60ns per span on my machines) and reasonably compact on disk, at least compared to the TEF backend.

0.5

  • perf: reduce overhead in trace-tef
  • perf: add Mpsc_queue, adapted from picos, to trace-tef

0.4

  • add ?data to counter_int and counter_float

  • add float to user data

  • add add_data_to_current_span and add_data_to_manual_span

  • make explicit_span.meta mutable

  • trace-tef: write to trace.json if env variable TRACE is either 1 or true

  • trace-tef: emit function name, if provided, as a metadata key/value pair

  • re-export trace.core in trace

  • perf: in trace-tef, use broadcast instead of signal in the job queue

0.3

  • add explicit spans, for more precise tracing
  • rename repo to ocaml-trace
  • trace-tef: add a ticker thread to ensure we flush the file regularly

0.2

  • trace-tef: additional argument to with_setup; env for "stdout"/"stderr"
  • refactor: avoid conflicting with stdlib Trace module by adding sublibrary trace.core. Programs that use compiler-libs.toplevel should use trace.core directly, because using trace will cause linking errors.
  • perf(trace-tef): improve behavior of collector under contention by pulling all events at once in the worker

0.1

initial release