wehub-resource-sync
23 lines
966 B
OCaml
23 lines
966 B
OCaml
open! Core
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open! Async
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(* Runs some perf script end-to-end through the perf_tool_backend and the trace_writer, printing
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out generated traces as a string.
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To generate these scripts, run magic-trace with a working directory (say, /tmp/wd). Then, run:
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$ perf script -i /tmp/wd/perf.data/data --ns --itrace=b -F pid,tid,time,flags,ip,addr,sym,symoff
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and save that output to a file in test/. See hello_world_with_kernel_tracing.ml for an example
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of turning that saved perf output into an expect test that you can play around with.
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If you're trying to demonstrate a bug, reduce your perf output to just the problematic section.
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It's hard to keep people engaged when reading diffs of massive tests. *)
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val run
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: ?debug:bool
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-> ?events_writer:Magic_trace_lib.Tracing_tool_output.events_writer
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-> ?ocaml_exception_info:Magic_trace_lib.Ocaml_exception_info.t
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-> trace_scope:Magic_trace_lib.Trace_scope.t
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-> Filename.t
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-> unit Deferred.t
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