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# -*- coding: us-ascii -*-
# frozen_string_literal: true
require "open3"
require "timeout"
require_relative "find_executable"
begin
require 'rbconfig'
rescue LoadError
end
begin
require "rbconfig/sizeof"
rescue LoadError
end
module EnvUtil
def rubybin
if ruby = ENV["RUBY"]
return ruby
end
ruby = "ruby"
exeext = RbConfig::CONFIG["EXEEXT"]
rubyexe = (ruby + exeext if exeext and !exeext.empty?)
3.times do
if File.exist? ruby and File.executable? ruby and !File.directory? ruby
return File.expand_path(ruby)
end
if rubyexe and File.exist? rubyexe and File.executable? rubyexe
return File.expand_path(rubyexe)
end
ruby = File.join("..", ruby)
end
if defined?(RbConfig.ruby)
RbConfig.ruby
else
"ruby"
end
end
module_function :rubybin
LANG_ENVS = %w"LANG LC_ALL LC_CTYPE"
DEFAULT_SIGNALS = Signal.list
DEFAULT_SIGNALS.delete("TERM") if /mswin|mingw/ =~ RUBY_PLATFORM
RUBYLIB = ENV["RUBYLIB"]
class << self
attr_accessor :timeout_scale
attr_reader :original_internal_encoding, :original_external_encoding,
:original_verbose, :original_warning
def capture_global_values
@original_internal_encoding = Encoding.default_internal
@original_external_encoding = Encoding.default_external
@original_verbose = $VERBOSE
@original_warning = %i[deprecated experimental].to_h {|i| [i, Warning[i]]}
end
end
def apply_timeout_scale(t)
if scale = EnvUtil.timeout_scale
t * scale
else
t
end
end
module_function :apply_timeout_scale
def timeout(sec, klass = nil, message = nil, &blk)
return yield(sec) if sec == nil or sec.zero?
sec = apply_timeout_scale(sec)
Timeout.timeout(sec, klass, message, &blk)
end
module_function :timeout
def terminate(pid, signal = :TERM, pgroup = nil, reprieve = 1)
reprieve = apply_timeout_scale(reprieve) if reprieve
signals = Array(signal).select do |sig|
DEFAULT_SIGNALS[sig.to_s] or
DEFAULT_SIGNALS[Signal.signame(sig)] rescue false
end
signals |= [:ABRT, :KILL]
case pgroup
when 0, true
pgroup = -pid
when nil, false
pgroup = pid
end
lldb = true if /darwin/ =~ RUBY_PLATFORM
while signal = signals.shift
if lldb and [:ABRT, :KILL].include?(signal)
lldb = false
# sudo -n: --non-interactive
# lldb -p: attach
# -o: run command
system(*%W[sudo -n lldb -p #{pid} --batch -o bt\ all -o call\ rb_vmdebug_stack_dump_all_threads() -o quit])
true
end
begin
Process.kill signal, pgroup
rescue Errno::EINVAL
next
rescue Errno::ESRCH
break
end
if signals.empty? or !reprieve
Process.wait(pid)
else
begin
Timeout.timeout(reprieve) {Process.wait(pid)}
rescue Timeout::Error
else
break
end
end
end
$?
end
module_function :terminate
def invoke_ruby(args, stdin_data = "", capture_stdout = false, capture_stderr = false,
encoding: nil, timeout: 10, reprieve: 1, timeout_error: Timeout::Error,
stdout_filter: nil, stderr_filter: nil,
signal: :TERM,
rubybin: EnvUtil.rubybin, precommand: nil,
**opt)
timeout = apply_timeout_scale(timeout)
in_c, in_p = IO.pipe
out_p, out_c = IO.pipe if capture_stdout
err_p, err_c = IO.pipe if capture_stderr && capture_stderr != :merge_to_stdout
opt[:in] = in_c
opt[:out] = out_c if capture_stdout
opt[:err] = capture_stderr == :merge_to_stdout ? out_c : err_c if capture_stderr
if encoding
out_p.set_encoding(encoding) if out_p
err_p.set_encoding(encoding) if err_p
end
c = "C"
child_env = {}
LANG_ENVS.each {|lc| child_env[lc] = c}
if Array === args and Hash === args.first
child_env.update(args.shift)
end
if RUBYLIB and lib = child_env["RUBYLIB"]
child_env["RUBYLIB"] = [lib, RUBYLIB].join(File::PATH_SEPARATOR)
end
args = [args] if args.kind_of?(String)
pid = spawn(child_env, *precommand, rubybin, *args, **opt)
in_c.close
out_c&.close
out_c = nil
err_c&.close
err_c = nil
if block_given?
return yield in_p, out_p, err_p, pid
else
th_stdout = Thread.new { out_p.read } if capture_stdout
th_stderr = Thread.new { err_p.read } if capture_stderr && capture_stderr != :merge_to_stdout
in_p.write stdin_data.to_str unless stdin_data.empty?
in_p.close
if (!th_stdout || th_stdout.join(timeout)) && (!th_stderr || th_stderr.join(timeout))
timeout_error = nil
else
status = terminate(pid, signal, opt[:pgroup], reprieve)
terminated = Time.now
end
stdout = th_stdout.value if capture_stdout
stderr = th_stderr.value if capture_stderr && capture_stderr != :merge_to_stdout
out_p.close if capture_stdout
err_p.close if capture_stderr && capture_stderr != :merge_to_stdout
status ||= Process.wait2(pid)[1]
stdout = stdout_filter.call(stdout) if stdout_filter
stderr = stderr_filter.call(stderr) if stderr_filter
if timeout_error
bt = caller_locations
msg = "execution of #{bt.shift.label} expired timeout (#{timeout} sec)"
msg = failure_description(status, terminated, msg, [stdout, stderr].join("\n"))
raise timeout_error, msg, bt.map(&:to_s)
end
return stdout, stderr, status
end
ensure
[th_stdout, th_stderr].each do |th|
th.kill if th
end
[in_c, in_p, out_c, out_p, err_c, err_p].each do |io|
io&.close
end
[th_stdout, th_stderr].each do |th|
th.join if th
end
end
module_function :invoke_ruby
def verbose_warning
class << (stderr = "".dup)
alias write concat
def flush; end
end
stderr, $stderr = $stderr, stderr
$VERBOSE = true
yield stderr
return $stderr
ensure
stderr, $stderr = $stderr, stderr
$VERBOSE = EnvUtil.original_verbose
EnvUtil.original_warning.each {|i, v| Warning[i] = v}
end
module_function :verbose_warning
def default_warning
$VERBOSE = false
yield
ensure
$VERBOSE = EnvUtil.original_verbose
end
module_function :default_warning
def suppress_warning
$VERBOSE = nil
yield
ensure
$VERBOSE = EnvUtil.original_verbose
end
module_function :suppress_warning
def under_gc_stress(stress = true)
stress, GC.stress = GC.stress, stress
yield
ensure
GC.stress = stress
end
module_function :under_gc_stress
def with_default_external(enc)
suppress_warning { Encoding.default_external = enc }
yield
ensure
suppress_warning { Encoding.default_external = EnvUtil.original_external_encoding }
end
module_function :with_default_external
def with_default_internal(enc)
suppress_warning { Encoding.default_internal = enc }
yield
ensure
suppress_warning { Encoding.default_internal = EnvUtil.original_internal_encoding }
end
module_function :with_default_internal
def labeled_module(name, &block)
Module.new do
singleton_class.class_eval {
define_method(:to_s) {name}
alias inspect to_s
alias name to_s
}
class_eval(&block) if block
end
end
module_function :labeled_module
def labeled_class(name, superclass = Object, &block)
Class.new(superclass) do
singleton_class.class_eval {
define_method(:to_s) {name}
alias inspect to_s
alias name to_s
}
class_eval(&block) if block
end
end
module_function :labeled_class
if /darwin/ =~ RUBY_PLATFORM
DIAGNOSTIC_REPORTS_PATH = File.expand_path("~/Library/Logs/DiagnosticReports")
DIAGNOSTIC_REPORTS_TIMEFORMAT = '%Y-%m-%d-%H%M%S'
@ruby_install_name = RbConfig::CONFIG['RUBY_INSTALL_NAME']
def self.diagnostic_reports(signame, pid, now)
return unless %w[ABRT QUIT SEGV ILL TRAP].include?(signame)
cmd = File.basename(rubybin)
cmd = @ruby_install_name if "ruby-runner#{RbConfig::CONFIG["EXEEXT"]}" == cmd
path = DIAGNOSTIC_REPORTS_PATH
timeformat = DIAGNOSTIC_REPORTS_TIMEFORMAT
pat = "#{path}/#{cmd}_#{now.strftime(timeformat)}[-_]*.crash"
first = true
30.times do
first ? (first = false) : sleep(0.1)
Dir.glob(pat) do |name|
log = File.read(name) rescue next
if /\AProcess:\s+#{cmd} \[#{pid}\]$/ =~ log
File.unlink(name)
File.unlink("#{path}/.#{File.basename(name)}.plist") rescue nil
return log
end
end
end
nil
end
else
def self.diagnostic_reports(signame, pid, now)
end
end
def self.failure_description(status, now, message = "", out = "")
pid = status.pid
if signo = status.termsig
signame = Signal.signame(signo)
sigdesc = "signal #{signo}"
end
log = diagnostic_reports(signame, pid, now)
if signame
sigdesc = "SIG#{signame} (#{sigdesc})"
end
if status.coredump?
sigdesc = "#{sigdesc} (core dumped)"
end
full_message = ''.dup
message = message.call if Proc === message
if message and !message.empty?
full_message << message << "\n"
end
full_message << "pid #{pid}"
full_message << " exit #{status.exitstatus}" if status.exited?
full_message << " killed by #{sigdesc}" if sigdesc
if out and !out.empty?
full_message << "\n" << out.b.gsub(/^/, '| ')
full_message.sub!(/(?<!\n)\z/, "\n")
end
if log
full_message << "Diagnostic reports:\n" << log.b.gsub(/^/, '| ')
end
full_message
end
def self.gc_stress_to_class?
unless defined?(@gc_stress_to_class)
_, _, status = invoke_ruby(["-e""exit GC.respond_to?(:add_stress_to_class)"])
@gc_stress_to_class = status.success?
end
@gc_stress_to_class
end
end
if defined?(RbConfig)
module RbConfig
@ruby = EnvUtil.rubybin
class << self
undef ruby if method_defined?(:ruby)
attr_reader :ruby
end
dir = File.dirname(ruby)
CONFIG['bindir'] = dir
end
end
EnvUtil.capture_global_values
|