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Makes sure it is OK for the profiled code to send/receive messages #13

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Merged
merged 1 commit into from
Sep 22, 2020
Merged

Makes sure it is OK for the profiled code to send/receive messages #13

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22 changes: 16 additions & 6 deletions lib/exprof/macro.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -16,13 +16,14 @@ defmodule ExProf.Macro do
"""
defmacro profile(do: code) do
quote do
pid = spawn_link(ExProf.Macro, :execute_profile, [fn -> unquote(code) end])
ref = make_ref()
pid = spawn_link(ExProf.Macro, :execute_profile, [fn -> unquote(code) end, ref])
ExProf.start(pid)
send pid, self()
send pid, {ref, self()}

result =
receive do
result -> result
{^ref, result} -> result
end

ExProf.stop
Expand All @@ -35,10 +36,19 @@ defmodule ExProf.Macro do
@doc """
An internal method for initiating profiling.
"""
def execute_profile(func) do
def execute_profile(func, ref) do
receive do
sender ->
send sender, func.()
{^ref, sender} ->
send sender, {ref, func.()}
forward_other_messages(sender)
end
end

defp forward_other_messages(sender) do
receive do
message ->
send sender, message
forward_other_messages(sender)
end
end
end