Remove type inference profiling, since thread safety was never merged…

… upstream:

JuliaLang/julia#47615 was never merged, so this
feature cannot be used yet anyway. :(

And the compat bounds are currently too strict, and are causing issues
in RelationalAI's build

src/ProfileEndpoints.jl

@@ -4,10 +4,6 @@ import HTTP
 import Profile
 import PProf
 
-using FlameGraphs
-using SnoopCompile
-import SnoopCompileCore
-
 using Serialization: serialize
 
 #----------------------------------------------------------
@@ -247,42 +243,6 @@ end
 
 end  # if isdefined
 
-###
-### Type Inference
-###
-
-function typeinf_start_endpoint(req::HTTP.Request)
-    if !isdefined(Core.Compiler.Timings, :clear_and_fetch_timings)
-        # See: https://github.com/JuliaLang/julia/pull/47615.
-        return HTTP.Response(501, "Type inference profiling isn't thread safe without Julia #47615.")
-    end
-    SnoopCompileCore.start_deep_timing()
-    return HTTP.Response(200, "Type inference profiling started.")
-end
-
-function typeinf_stop_endpoint(req::HTTP.Request)
-    if !isdefined(Core.Compiler.Timings, :clear_and_fetch_timings)
-        # See: https://github.com/JuliaLang/julia/pull/47615.
-        return HTTP.Response(501, "Type inference profiling isn't thread safe without Julia #47615.")
-    end
-
-    SnoopCompileCore.stop_deep_timing()
-    timings = SnoopCompileCore.finish_snoopi_deep()
-
-    # Currently, SnoopCompile will throw an error if timings is empty..
-    # Reported, here: https://github.com/timholy/SnoopCompile.jl/pull/212/files#r1062926193
-    if isempty(timings.children)
-        # So just return an empty profile..
-        return _http_response("", "inference_profile.pb.gz")
-    end
-
-    flame_graph = flamegraph(timings)
-    prof_name = tempname()
-    PProf.pprof(flame_graph; out=prof_name, web=false)
-    prof_name = "$prof_name.pb.gz"
-    return _http_response(read(prof_name), "inference_profile.pb.gz")
-end
-
 ###
 ### Server
 ###
@@ -297,8 +257,6 @@ function serve_profiling_server(;addr="127.0.0.1", port=16825, verbose=false, kw
     HTTP.register!(router, "/allocs_profile", allocations_profile_endpoint)
     HTTP.register!(router, "/allocs_profile_start", allocations_start_endpoint)
     HTTP.register!(router, "/allocs_profile_stop", allocations_stop_endpoint)
-    HTTP.register!(router, "/typeinf_profile_start", typeinf_start_endpoint)
-    HTTP.register!(router, "/typeinf_profile_stop", typeinf_stop_endpoint)
     # HTTP.serve! returns listening/serving server object
     return HTTP.serve!(router, addr, port; verbose, kw...)
 end
@@ -324,9 +282,6 @@ function __init__()
         precompile(_start_alloc_profile, (Float64,)) || error("precompilation of package functions is not supposed to fail")
         precompile(_stop_alloc_profile, ()) || error("precompilation of package functions is not supposed to fail")
     end
-
-    precompile(typeinf_start_endpoint, (HTTP.Request,)) || error("precompilation of package functions is not supposed to fail")
-    precompile(typeinf_stop_endpoint, (HTTP.Request,)) || error("precompilation of package functions is not supposed to fail")
 end
 
 end # module ProfileEndpoints

test/runtests.jl

@@ -154,30 +154,6 @@ const url = "http://127.0.0.1:$port"
         end
     end
 
-    @testset "Type inference profiling" begin
-        if !isdefined(Core.Compiler.Timings, :clear_and_fetch_timings)
-            @test HTTP.get("$url/typeinf_profile_start", retry=false, status_exception=false).status == 501
-            @test HTTP.get("$url/typeinf_profile_stop", retry=false, status_exception=false).status == 501
-        else
-            @testset "typeinf start/stop endpoints" begin
-                resp = HTTP.get("$url/typeinf_profile_start", retry=false, status_exception=false)
-                @test resp.status == 200
-                @test String(resp.body) == "Type inference profiling started."
-
-                # workload
-                @eval foo() = 2
-                @eval foo()
-
-                resp = HTTP.get("$url/typeinf_profile_stop", retry=false, status_exception=false)
-                @test resp.status == 200
-                data = read(IOBuffer(resp.body), String)
-                # Test that there's something here
-                # TODO: actually parse the profile
-                @test length(data) > 100
-            end
-        end
-    end
-
     @testset "error handling" begin
         let res = HTTP.get("$url/profile", status_exception=false)
             @test 400 <= res.status < 500