Revision db393d03244c103cffead1297323ff079d3844ee authored by Valentin Churavy on 28 June 2023, 07:30:52 UTC, committed by Valentin Churavy on 28 June 2023, 08:20:32 UTC
1 parent 6f73354
atexit.jl
# This file is a part of Julia. License is MIT: https://julialang.org/license
using Test
@testset "atexit.jl" begin
function _atexit_tests_gen_cmd_eval(expr::String)
# We run the atexit tests with 2 threads, for the parallelism tests at the end.
cmd_eval = ```
$(Base.julia_cmd()) -t2 -e $(expr)
```
return cmd_eval
end
function _atexit_tests_gen_cmd_script(temp_dir::String, expr::String)
script, io = mktemp(temp_dir)
println(io, expr)
close(io)
# We run the atexit tests with 2 threads, for the parallelism tests at the end.
cmd_script = ```
$(Base.julia_cmd()) -t2 $(script)
```
return cmd_script
end
atexit_temp_dir = mktempdir()
atexit(() -> rm(atexit_temp_dir; force = true, recursive = true))
@testset "these should exit with exit code 0" begin
julia_expr_list = Dict(
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(0))
exit(22)
""" => 0,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(exitcode -> exitcode > 10 && exit(0))
exit(22)
""" => 0,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
)
for julia_expr in keys(julia_expr_list)
cmd_eval = _atexit_tests_gen_cmd_eval(julia_expr)
cmd_script = _atexit_tests_gen_cmd_script(atexit_temp_dir, julia_expr)
expected_exit_code = julia_expr_list[julia_expr]
@test success(cmd_eval)
@test success(cmd_script)
p_eval = run(cmd_eval; wait = false)
p_script = run(cmd_script; wait = false)
wait(p_eval)
wait(p_script)
@test p_eval.exitcode == expected_exit_code
@test p_script.exitcode == expected_exit_code
end
end
@testset "these should exit with exit code 1" begin
julia_expr_list = Dict(
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(1))
exit(22)
""" => 1,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> ("No error"))
atexit(() -> exit(1))
exit(22)
""" => 1,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(1))
atexit(() -> exit(1))
exit(22)
""" => 1,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
)
for julia_expr in keys(julia_expr_list)
cmd_eval = _atexit_tests_gen_cmd_eval(julia_expr)
cmd_script = _atexit_tests_gen_cmd_script(atexit_temp_dir, julia_expr)
expected_exit_code = julia_expr_list[julia_expr]
@test_throws ProcessFailedException run(cmd_eval)
@test_throws ProcessFailedException run(cmd_script)
p_eval = run(cmd_eval; wait = false)
p_script = run(cmd_script; wait = false)
wait(p_eval)
wait(p_script)
@test p_eval.exitcode == expected_exit_code
@test p_script.exitcode == expected_exit_code
end
end
@testset "test exit codes other than 0 or 1" begin
julia_expr_list = Dict(
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(13))
exit(22)
""" => 13,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(exitcode -> exit(exitcode+3))
exit(22)
""" => 25,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> ("No error"))
atexit(() -> exit(5))
exit(22)
""" => 5,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(33))
atexit(() -> exit(33))
exit(22)
""" => 33,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(21))
atexit(() -> exit(21))
exit(22)
""" => 21,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
)
for julia_expr in keys(julia_expr_list)
cmd_eval = _atexit_tests_gen_cmd_eval(julia_expr)
cmd_script = _atexit_tests_gen_cmd_script(atexit_temp_dir, julia_expr)
expected_exit_code = julia_expr_list[julia_expr]
@test_throws(ProcessFailedException, run(cmd_eval))
@test_throws(ProcessFailedException, run(cmd_script))
p_eval = run(cmd_eval; wait = false)
p_script = run(cmd_script; wait = false)
wait(p_eval)
wait(p_script)
@test p_eval.exitcode == expected_exit_code
@test p_script.exitcode == expected_exit_code
end
end
@testset "test what happens if multiple places call exit(n)" begin
julia_expr_list = Dict(
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(22))
atexit(() -> exit(11))
atexit(() -> exit(33))
""" => 22,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(4))
atexit(() -> exit(16))
atexit(() -> exit(7))
exit(22)
""" => 4,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(() -> exit(21))
atexit(exitcode -> exit(exitcode+3))
exit(22)
""" => 21,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
atexit(exitcode -> exit(exitcode+3))
atexit(() -> exit(21))
exit(22)
""" => 24,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
)
for julia_expr in keys(julia_expr_list)
cmd_eval = _atexit_tests_gen_cmd_eval(julia_expr)
cmd_script = _atexit_tests_gen_cmd_script(atexit_temp_dir, julia_expr)
expected_exit_code = julia_expr_list[julia_expr]
@test_throws(ProcessFailedException, run(cmd_eval))
@test_throws(ProcessFailedException, run(cmd_script))
p_eval = run(cmd_eval; wait = false)
p_script = run(cmd_script; wait = false)
wait(p_eval)
wait(p_script)
@test p_eval.exitcode == expected_exit_code
@test p_script.exitcode == expected_exit_code
end
end
@testset "test calling atexit() in parallel with running atexit hooks." begin
# These tests cover 3 parallelism cases, as described by the following comments.
julia_expr_list = Dict(
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# 1. registering a hook from inside a hook
"""
atexit() do
atexit() do
exit(11)
end
end
# This will attempt to exit 0, but the execution of the atexit hook will
# register another hook, which will exit 11.
exit(0)
""" => 11,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# 2. registering a hook from another thread while hooks are running
"""
c = Channel()
# This hook must execute _last_. (Execution is LIFO.)
atexit() do
put!(c, nothing)
put!(c, nothing)
end
atexit() do
# This will run in a concurrent task, testing that we can register atexit
# hooks from another task while running atexit hooks.
Threads.@spawn begin
take!(c) # block on c
atexit() do
exit(11)
end
take!(c) # keep the _atexit() loop alive until we've added another item.
end
end
exit(0)
""" => 11,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# 3. attempting to register a hook after all hooks have finished (disallowed)
"""
const atexit_has_finished = Threads.Atomic{Bool}(false)
atexit() do
Threads.@spawn begin
# Block until the atexit hooks have all finished. We use a manual "spin
# lock" because task switch is disallowed inside the finalizer, below.
while !atexit_has_finished[] end
try
# By the time this runs, all the atexit hooks will be done.
# So this will throw.
atexit() do
exit(11)
end
catch
# Meaning we _actually_ exit 22.
exit(22)
end
end
end
# Finalizers run after the atexit hooks, so this blocks exit until the spawned
# task above gets a chance to run.
x = []
finalizer(x) do x
# Allow the spawned task to finish
atexit_has_finished[] = true
# Then spin forever to prevent exit.
while atexit_has_finished[] end
end
exit(0)
""" => 22,
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
)
for julia_expr in keys(julia_expr_list)
cmd_eval = _atexit_tests_gen_cmd_eval(julia_expr)
cmd_script = _atexit_tests_gen_cmd_script(atexit_temp_dir, julia_expr)
expected_exit_code = julia_expr_list[julia_expr]
@test_throws(ProcessFailedException, run(cmd_eval))
@test_throws(ProcessFailedException, run(cmd_script))
p_eval = run(cmd_eval; wait = false)
p_script = run(cmd_script; wait = false)
wait(p_eval)
wait(p_script)
@test p_eval.exitcode == expected_exit_code
@test p_script.exitcode == expected_exit_code
end
end
rm(atexit_temp_dir; force = true, recursive = true)
end
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