package magic-trace

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Collects and displays high-resolution traces of what a process is doing

Install

Dune Dependency

magic-trace.org Readme MIT License Edit opam file Versions (1)

Authors

J

Jane Street Group, LLC

Maintainers

J

Jane Street developers

Sources

v1.0.1.tar.gz

sha256=77b2e4b3bc769910656d0fdee4839250548aa49486fd3554f6c057f1d64abe99

sha512=1f111db6348673c22a110611182a92c8aa999668dc077c44bc4abcaa72ccb197899ff2577047888627b50fcc9890824de6c82b4fe9f06129190b8b487ec3f716

doc/magic-trace.magic_trace_lib/Magic_trace_lib/Breakpoint/index.html

Module `Magic_trace_lib.Breakpoint`Source

Sourcetype t

Source

val breakpoint_fd : 
  Core.Pid.t ->
  addr:int64 ->
  single_hit:bool ->
  t Core.Or_error.t

Uses perf_event_open to set a hardware breakpoint at a given address in a process. When that breakpoint is hit the resulting file descriptor will poll as readable.

If single_hit is set the breakpoint will disable itself after being hit once.

Sourceval destroy : t -> unit

Sourcemodule Hit : sig ... end

Sourceval next_hit : t -> Hit.t option

Sourceval fd : t -> Core_unix.File_descr.t

Returns a waitable fd valid only until t is destroyed or GCd