Add support for using FFI in Ractor

All objects are shareable now when frozen.
All objects can be created in a non-main Ractor.

Typedefs are a global mutable state and are not accessable from Ractor other than the main Ractor.
So all Function, Struct, etc. must be defined in the main Ractor and can then be used in other Ractors.

1 files changed, 24 insertions, 0 deletions

diff --git a/spec/ffi/function_spec.rb b/spec/ffi/function_spec.rb
index 7f90ea3..0d89a7d 100644
--- a/spec/ffi/function_spec.rb
+++ b/spec/ffi/function_spec.rb
@@ -48,6 +48,30 @@ describe FFI::Function do
     expect(LibTest.testFunctionAdd(10, 10, function_add)).to eq(20)
   end
 
+  def adder(a, b)
+    a + b
+  end
+
+  it "should be shareable for Ractor", :ractor do
+    add = FFI::Function.new(:int, [:int, :int], &method(:adder))
+    Ractor.make_shareable(add)
+
+    res = Ractor.new(add) do |add2|
+      LibTest.testFunctionAdd(10, 10, add2)
+    end.take
+
+    expect( res ).to eq(20)
+  end
+
+  it "should be usable with Ractor", :ractor do
+    res = Ractor.new(@conninfo) do |conninfo|
+      function_add = FFI::Function.new(:int, [:int, :int]) { |a, b| a + b }
+      LibTest.testFunctionAdd(10, 10, function_add)
+    end.take
+
+    expect( res ).to eq(20)
+  end
+
   it 'can be used to wrap an existing function pointer' do
     expect(FFI::Function.new(:int, [:int, :int], @libtest.find_function('testAdd')).call(10, 10)).to eq(20)
   end