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CHANGES.md

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Release v0.17.0

  • Added support for asynchronous begin/end/instant events to the trace writer and parser.

  • Added option to preserve interned strings' contents in a hash table.

  • Extracted platform-specific tracing destinations into the separate library tracing_destinations_unix.

  • Refactored how the parser handles incomplete event data, fixing a bug.

  • Moved full writer signature to zero/writer_intf.ml.

Release v0.16.0

  • Added 64-bit integer and pointer event arguments.

  • Added buffer type (src/buffer.mli) that consumes a real-time stream of tracing data and only stores the last N bytes, while preserving global state (e.g. interned strings).

  • Changed standard file extension from ".ftf" to ".fxt".

  • Moved Tracing_tool_output into its own library.

  • Updated trace parser:

    • Support parsing an event stream split over multiple data buffers.
    • Detect, report, and potentially resume incomplete event records.

  • Updated trace writer:

    • Removed wrote_bytes from the destination API: writers are now required to update lo when writing to buffers returned by next_buf.
    • Added unix file descriptor destination.
    • Added various utility functions to Writer.Expert.
    • Reserved 17 'dynamic' string interning slots, separate from temp string slots. This region is intended to be used via a ppx frontend.
    • Clarified documentation.