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path: root/lang/julia07/files/patch-issue-29016
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diff --git contrib/generate_precompile.jl contrib/generate_precompile.jl
index 6788558275..11e9de09ae 100644
--- contrib/generate_precompile.jl
+++ contrib/generate_precompile.jl
@@ -8,7 +8,7 @@ if !isdefined(Base, :uv_eventloop)
     Base.reinit_stdio()
 end
 Base.include(@__MODULE__, joinpath(Sys.BINDIR, "..", "share", "julia", "test", "testhelpers", "FakePTYs.jl"))
-import .FakePTYs: with_fake_pty
+import .FakePTYs: open_fake_pty
 
 CTRL_C = '\x03'
 UP_ARROW = "\e[A"
@@ -43,6 +43,12 @@ if Pkg !== nothing
     precompile_script *= Pkg.precompile_script
 end
 
+push!(LOAD_PATH, Sys.STDLIB)
+using Sockets
+Sockets.__init__()
+using Libdl
+empty!(LOAD_PATH)
+
 function generate_precompile_statements()
     start_time = time()
 
@@ -62,82 +68,106 @@ function generate_precompile_statements()
         empty!(DEPOT_PATH)
     end
 
-    # Create a staging area where all the loaded packages are available
-    PrecompileStagingArea = Module()
-    for (_pkgid, _mod) in Base.loaded_modules
-        if !(_pkgid.name in ("Main", "Core", "Base"))
-            eval(PrecompileStagingArea, :($(Symbol(_mod)) = $_mod))
+    print("Generating precompile statements...")
+    sysimg = Base.unsafe_string(Base.JLOptions().image_file)
+    mktemp() do precompile_file, _
+        # Run a repl process and replay our script
+        repl_output_buffer = IOBuffer()
+        @static if Sys.iswindows()
+            # Fake being cygwin
+            pipename = """\\\\?\\pipe\\cygwin-$("0"^16)-pty10-abcdef"""
+            server = listen(pipename)
+            slave = connect(pipename)
+            @assert ccall(:jl_ispty, Cint, (Ptr{Cvoid},), slave.handle) == 1
+            master = accept(server)
+        else
+            slave, master = open_fake_pty()
         end
-    end
-
-    # TODO: Implement REPL replayer for Windows
-    @static if !Sys.iswindows()
-        print("Generating precompile statements...")
-        sysimg = isempty(ARGS) ? joinpath(dirname(Sys.BINDIR), "lib", "julia", "sys.ji") : ARGS[1]
-
-        mktemp() do precompile_file, _
-            # Run a repl process and replay our script
-            stdout_accumulator, stderr_accumulator = IOBuffer(), IOBuffer()
-            with_fake_pty() do slave, master
-                with_fake_pty() do slave_err, master_err
-                    done = false
-                    withenv("JULIA_HISTORY" => tempname(), "JULIA_PROJECT" => nothing,
-                            "TERM" => "") do
-                        p = run(`$(julia_cmd()) -O0 --trace-compile=$precompile_file --sysimage $sysimg
-                                               --startup-file=no --color=yes`,
-                                slave, slave, slave_err; wait=false)
-                        readuntil(master, "julia>", keep=true)
-                        for (tty, accumulator) in (master     => stdout_accumulator,
-                                                   master_err => stderr_accumulator)
-                            @async begin
-                                while true
-                                    done && break
-                                    write(accumulator, readavailable(tty))
-                                end
-                            end
-                        end
-                        if have_repl
-                            for l in split(precompile_script, '\n'; keepempty=false)
-                                write(master, l, '\n')
-                            end
+        done = false
+        withenv("JULIA_HISTORY" => tempname(), "JULIA_PROJECT" => nothing,
+                "TERM" => "") do
+            if have_repl
+                p = run(`$(julia_cmd()) -O0 --trace-compile=$precompile_file --sysimage $sysimg
+                        --compile=all --startup-file=no --color=yes`,
+                        slave, slave, slave; wait=false)
+                readuntil(master, "julia>", keep=true)
+                t = @async begin
+                    while true
+                        sleep(0.5)
+                        s = String(readavailable(master))
+                        write(repl_output_buffer, s)
+                        if occursin("__PRECOMPILE_END__", s)
+                            break
                         end
-                        write(master, "exit()\n")
-                        wait(p)
-                        done = true
                     end
                 end
+                if have_repl
+                    for l in split(precompile_script, '\n'; keepempty=false)
+                        write(master, l, '\n')
+                    end
+                end
+                write(master, "print(\"__PRECOMPILE\", \"_END__\")", '\n')
+                wait(t)
+
+                # TODO Figure out why exit() on Windows doesn't exit the process
+                if Sys.iswindows()
+                    print(master, "ccall(:_exit, Cvoid, (Cint,), 0)\n")
+                else
+                    write(master, "exit()\n")
+                    readuntil(master, "exit()\r\e[13C\r\n")
+                    @assert bytesavailable(master) == 0
+                end
+                wait(p)
+            else
+                # Is this even needed or is this already recorded just from starting this process?
+                p = run(`$(julia_cmd()) -O0 --trace-compile=$precompile_file --sysimage $sysimg
+                        --compile=all --startup-file=no
+                        -e0`)
             end
+        end
+        close(master)
 
-            # Check what the REPL displayed
-            # stdout_output = String(take!(stdout_accumulator))
-            # println(stdout_output)
+        # Check what the REPL displayed
+        # repl_output = String(take!(repl_output_buffer))
+        # println(repl_output)
 
-            # Extract the precompile statements from stderr
-            statements = Set{String}()
-            for statement in split(read(precompile_file, String), '\n')
-                occursin("Main.", statement) && continue
-                push!(statements, statement)
-            end
+        # Extract the precompile statements from stderr
+        statements = Set{String}()
+        for statement in split(read(precompile_file, String), '\n')
+            occursin("Main.", statement) && continue
+            push!(statements, statement)
+        end
 
-            # Load the precompile statements
-            statements_ordered = join(sort(collect(statements)), '\n')
-            # println(statements_ordered)
-            if have_repl
-                # Seems like a reasonable number right now, adjust as needed
-                @assert length(statements) > 700
+        if have_repl
+            # Seems like a reasonable number right now, adjust as needed
+            # comment out if debugging script
+            @assert length(statements) > 700
+        end
+
+        # Create a staging area where all the loaded packages are available
+        PrecompileStagingArea = Module()
+        for (_pkgid, _mod) in Base.loaded_modules
+            if !(_pkgid.name in ("Main", "Core", "Base"))
+                eval(PrecompileStagingArea, :($(Symbol(_mod)) = $_mod))
             end
+        end
 
-            Base.include_string(PrecompileStagingArea, statements_ordered)
-            print(" $(length(statements)) generated in ")
-            Base.time_print((time() - start_time) * 10^9)
-            println()
+        # Execute the collected precompile statements
+        include_time = @elapsed for statement in sort(collect(statements))
+            # println(statement)
+            try
+                Base.include_string(PrecompileStagingArea, statement)
+            catch ex
+                @error "Failed to precompile $statement"
+                rethrow(ex)
+            end
         end
+        print(" $(length(statements)) generated in ")
+        tot_time = time() - start_time
+        Base.time_print(tot_time * 10^9)
+        print(" (overhead "); Base.time_print((tot_time - include_time) * 10^9); println(")")
     end
 
-    # Fall back to explicit list on Windows, might as well include them
-    # for everyone though
-    Base.include(PrecompileStagingArea, "precompile_explicit.jl")
-
     return
 end