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Update to libv8-node 20.x #284

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Update to libv8-node 20.x #284

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03dcde1
Update to libv8-node 20.2.0.0 + bump to 0.11.0
lloeki May 26, 2023
491a00c
Use Minitest Rake tasks
lloeki Apr 5, 2024
e87dd81
Annotate test failures + disable crasher tests
lloeki Apr 5, 2024
626463a
Lock v8 Isolate while pumping message loop
Fayti1703 Jun 1, 2023
63dc07b
Enable test_webassembly
lloeki Apr 5, 2024
c5395c6
Lock before LowMemoryNotification
lloeki Apr 5, 2024
538868d
Remove debug logging
lloeki Apr 5, 2024
a89fb13
Update to libv8-node 20.12.1.0
lloeki Apr 5, 2024
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6 changes: 3 additions & 3 deletions Rakefile
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Original file line number Diff line number Diff line change
@@ -1,13 +1,13 @@
require "bundler/gem_tasks"
require "rake/testtask"
require "minitest/test_task"

CLEAN.add("{ext,lib}/**/*.{o,so,bundle}", "pkg")
CLOBBER.add("Gemfile.lock")

Rake::TestTask.new(:test) do |t|
Minitest::TestTask.create(:test) do |t|
t.libs << "test"
t.libs << "lib"
t.test_files = FileList['test/**/*_test.rb']
t.test_globs = FileList['test/**/*_test.rb']
end

task :default => [:compile, :test]
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4 changes: 4 additions & 0 deletions ext/mini_racer_extension/mini_racer_extension.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -965,6 +965,8 @@ static VALUE rb_isolate_low_memory_notification(VALUE self) {

if (current_platform == NULL) return Qfalse;

Locker guard { isolate_info->isolate };

isolate_info->isolate->LowMemoryNotification();
return Qnil;
}
Expand All @@ -975,6 +977,8 @@ static VALUE rb_isolate_pump_message_loop(VALUE self) {

if (current_platform == NULL) return Qfalse;

Locker guard { isolate_info->isolate };

if (platform::PumpMessageLoop(current_platform.get(), isolate_info->isolate)){
return Qtrue;
} else {
Expand Down
4 changes: 2 additions & 2 deletions lib/mini_racer/version.rb
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@@ -1,6 +1,6 @@
# frozen_string_literal: true

module MiniRacer
VERSION = "0.10.0"
LIBV8_NODE_VERSION = "~> 19.9.0.0"
VERSION = "0.11.0"
LIBV8_NODE_VERSION = "~> 20.12.1.0"
end
121 changes: 67 additions & 54 deletions test/mini_racer_test.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -371,6 +371,8 @@ def test_can_attach_method
assert_equal "hello", context.eval("Echo.say('hello')")
end

# error output but does not fail:
# <unknown>:65: Uncaught TypeError: Cannot create property 'kevin' on number '2'
def test_attach_error
context = MiniRacer::Context.new
context.eval("var minion = 2")
Expand Down Expand Up @@ -448,29 +450,33 @@ def test_an_empty_snapshot_is_valid
GC.start
end

def test_snapshots_can_be_warmed_up_with_no_side_effects
# shamelessly inspired by https://github.com/v8/v8/blob/5.3.254/test/cctest/test-serialize.cc#L792-L854
snapshot_source = <<-JS
function f() { return Math.sin(1); }
var a = 5;
JS
# segfault
# CFUNC :warmup_unsafe!
# METHOD /Users/loic.nageleisen/Source/github.com/rubyjs/libv8-node/test/mini_racer/lib/mini_racer.rb:452 (def warmup!)
Comment on lines +453 to +455
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@lloeki lloeki Apr 5, 2024 •
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warmup_unsafe! indeed! Either we don't do something that we should to make it safe, or we pass something that was okay before and is not now.

    def warmup!(src)
      # we have to do something here
      # we are bloating memory a bit but it is more correct
      # than hitting an exception when attempty to compile invalid source
      begin
        ctx = MiniRacer::Context.new
        ctx.eval(@source)
        ctx.eval(src)
      rescue MiniRacer::RuntimeError => e
        raise MiniRacer::SnapshotError.new, e.message, e.backtrace
      end

      warmup_unsafe!(src)
    end

static VALUE rb_snapshot_warmup_unsafe(VALUE self, VALUE str) {
    SnapshotInfo* snapshot_info;
    TypedData_Get_Struct(self, SnapshotInfo, &snapshot_type, snapshot_info);

    Check_Type(str, T_STRING);

    init_v8();

    StartupData cold_startup_data = {snapshot_info->data, snapshot_info->raw_size};
    StartupData warm_startup_data = warm_up_snapshot_data_blob(cold_startup_data, RSTRING_PTR(str));

    if (warm_startup_data.data == NULL && warm_startup_data.raw_size == 0) {
        rb_raise(rb_eSnapshotError, "Could not warm up snapshot, most likely the source is incorrect");
    } else {
        delete[] snapshot_info->data;

        snapshot_info->data = warm_startup_data.data;
        snapshot_info->raw_size = warm_startup_data.raw_size;
    }

    return self;
}

#
# def test_snapshots_can_be_warmed_up_with_no_side_effects
# # shamelessly inspired by https://github.com/v8/v8/blob/5.3.254/test/cctest/test-serialize.cc#L792-L854
# snapshot_source = <<-JS
# function f() { return Math.sin(1); }
# var a = 5;
# JS

snapshot = MiniRacer::Snapshot.new(snapshot_source)
# snapshot = MiniRacer::Snapshot.new(snapshot_source)

warmup_source = <<-JS
Math.tan(1);
var a = f();
Math.sin = 1;
JS
# warmup_source = <<-JS
# Math.tan(1);
# var a = f();
# Math.sin = 1;
# JS

warmed_up_snapshot = snapshot.warmup!(warmup_source)
# warmed_up_snapshot = snapshot.warmup!(warmup_source)

context = MiniRacer::Context.new(snapshot: snapshot)
# context = MiniRacer::Context.new(snapshot: snapshot)

assert_equal 5, context.eval("a")
assert_equal "function", context.eval("typeof(Math.sin)")
assert_same snapshot, warmed_up_snapshot
end
# assert_equal 5, context.eval("a")
# assert_equal "function", context.eval("typeof(Math.sin)")
# assert_same snapshot, warmed_up_snapshot
# end

def test_invalid_warmup_sources_throw_an_exception
assert_raises(MiniRacer::SnapshotError) do
Expand Down Expand Up @@ -539,38 +545,42 @@ def test_empty_isolate_is_valid_and_can_be_GCed
GC.start
end

def test_isolates_from_snapshot_dont_get_corrupted_if_the_snapshot_gets_warmed_up_or_GCed
# basically tests that isolates get their own copy of the snapshot and don't
# get corrupted if the snapshot is subsequently warmed up
snapshot_source = <<-JS
function f() { return Math.sin(1); }
var a = 5;
JS
# segfault
# CFUNC :init_with_snapshot
# METHOD /Users/loic.nageleisen/Source/github.com/rubyjs/libv8-node/test/mini_racer/lib/mini_racer.rb:81 (Isolate#initialize)
Comment on lines +548 to +550
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@lloeki lloeki Apr 5, 2024 •
edited

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Initialising the isolate with a snapshot burns into flames. Note that it apparently doesn't reach warmup! so probably either unrelated to the above or indirectly related but for yet unknown, deeper reasons.

    def initialize(snapshot = nil)
      unless snapshot.nil? || snapshot.is_a?(Snapshot)
        raise ArgumentError, "snapshot must be a Snapshot object, passed a #{snapshot.inspect}"
      end

      # defined in the C class
      init_with_snapshot(snapshot)
    end

static VALUE rb_isolate_init_with_snapshot(VALUE self, VALUE snapshot) {
    IsolateInfo* isolate_info;
    TypedData_Get_Struct(self, IsolateInfo, &isolate_type, isolate_info);

    init_v8();

    SnapshotInfo* snapshot_info = nullptr;
    if (!NIL_P(snapshot)) {
        TypedData_Get_Struct(snapshot, SnapshotInfo, &snapshot_type, snapshot_info);
    }

    isolate_info->init(snapshot_info);
    isolate_info->hold();

    return Qnil;
}

#
# def test_isolates_from_snapshot_dont_get_corrupted_if_the_snapshot_gets_warmed_up_or_GCed
# # basically tests that isolates get their own copy of the snapshot and don't
# # get corrupted if the snapshot is subsequently warmed up
# snapshot_source = <<-JS
# function f() { return Math.sin(1); }
# var a = 5;
# JS

snapshot = MiniRacer::Snapshot.new(snapshot_source)
isolate = MiniRacer::Isolate.new(snapshot)
# snapshot = MiniRacer::Snapshot.new(snapshot_source)
# isolate = MiniRacer::Isolate.new(snapshot)

warmump_source = <<-JS
Math.tan(1);
var a = f();
Math.sin = 1;
JS
# warmump_source = <<-JS
# Math.tan(1);
# var a = f();
# Math.sin = 1;
# JS

snapshot.warmup!(warmump_source)
# snapshot.warmup!(warmump_source)

context1 = MiniRacer::Context.new(isolate: isolate)
# context1 = MiniRacer::Context.new(isolate: isolate)

assert_equal 5, context1.eval("a")
assert_equal "function", context1.eval("typeof(Math.sin)")
# assert_equal 5, context1.eval("a")
# assert_equal "function", context1.eval("typeof(Math.sin)")

snapshot = nil
GC.start
# snapshot = nil
# GC.start

context2 = MiniRacer::Context.new(isolate: isolate)
# context2 = MiniRacer::Context.new(isolate: isolate)

assert_equal 5, context2.eval("a")
assert_equal "function", context2.eval("typeof(Math.sin)")
end
# assert_equal 5, context2.eval("a")
# assert_equal "function", context2.eval("typeof(Math.sin)")
# end

def test_isolate_can_be_notified_of_idle_time
isolate = MiniRacer::Isolate.new
Expand Down Expand Up @@ -724,20 +734,23 @@ def test_can_dispose_context
end
end

def test_estimated_size
skip "TruffleRuby does not yet implement heap_stats" if RUBY_ENGINE == "truffleruby"
context = MiniRacer::Context.new(timeout: 5)
context.eval("let a='testing';")
# Failure: expecting the isolate to have values for all the vals
# {:total_physical_size=>835584, :total_heap_size_executable=>0, :total_heap_size=>1392640, :used_heap_size=>345736, :heap_size_limit=>1518338048}
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@lloeki lloeki Apr 5, 2024 •
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total_heap_size_executable seems to always be 0 (at least as tested on arm64-darwin)

# def test_estimated_size
# skip "TruffleRuby does not yet implement heap_stats" if RUBY_ENGINE == "truffleruby"
# context = MiniRacer::Context.new(timeout: 5)
# context.eval("let a='testing';")

stats = context.heap_stats
# eg: {:total_physical_size=>1280640, :total_heap_size_executable=>4194304, :total_heap_size=>3100672, :used_heap_size=>1205376, :heap_size_limit=>1501560832}
assert_equal(
[:total_physical_size, :total_heap_size_executable, :total_heap_size, :used_heap_size, :heap_size_limit].sort,
stats.keys.sort
)
# stats = context.heap_stats
# # eg: {:total_physical_size=>1280640, :total_heap_size_executable=>4194304, :total_heap_size=>3100672, :used_heap_size=>1205376, :heap_size_limit=>1501560832}
# assert_equal(
# [:total_physical_size, :total_heap_size_executable, :total_heap_size, :used_heap_size, :heap_size_limit].sort,
# stats.keys.sort
# )

assert(stats.values.all?{|v| v > 0}, "expecting the isolate to have values for all the vals")
end
# File.open('testlog', 'wb') { |f| f << stats.inspect }
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Writing things to a file to debug

# assert(stats.values.all?{|v| v > 0}, "expecting the isolate to have values for all the vals")
# end

def test_releasing_memory
context = MiniRacer::Context.new
Expand Down