[wasm] Transferrable modules

test/cctest/wasm/test-run-wasm-module.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/objects-inl.h"
 #include "src/snapshot/code-serializer.h"
 #include "src/version.h"
@@ skipping 451 matching lines @@
   {
     HandleScope scope(test.current_isolate());
     test.current_isolate_v8()->SetAllowCodeGenerationFromStringsCallback(False);
     v8::MaybeLocal<v8::WasmCompiledModule> nothing = test.Deserialize();
     CHECK(nothing.IsEmpty());
   }
   Cleanup(test.current_isolate());
   Cleanup();
 }
 
+TEST(TransferrableWasmModules) {
+  v8::internal::AccountingAllocator allocator;
+  Zone zone(&allocator, ZONE_NAME);
+
+  ZoneBuffer buffer(&zone);
+  WasmSerializationTest::BuildWireBytes(&zone, &buffer);
+
+  Isolate* from_isolate = CcTest::InitIsolateOnce();
+  ErrorThrower thrower(from_isolate, "");
+  std::vector<v8::WasmCompiledModule::TransferrableModule> store;
+  {
+    HandleScope scope(from_isolate);
+    testing::SetupIsolateForWasmModule(from_isolate);
+
+    MaybeHandle<WasmModuleObject> module_object = SyncCompile(
+        from_isolate, &thrower, ModuleWireBytes(buffer.begin(), buffer.end()));
+    v8::Local<v8::WasmCompiledModule> v8_module =
+        v8::Local<v8::WasmCompiledModule>::Cast(v8::Utils::ToLocal(
+            Handle<JSObject>::cast(module_object.ToHandleChecked())));
+    store.push_back(v8_module->GetTransferrableModule());
+  }
+
+  {
+    v8::Isolate::CreateParams create_params;
+    create_params.array_buffer_allocator =
+        from_isolate->array_buffer_allocator();
+    v8::Isolate* to_isolate = v8::Isolate::New(create_params);
+    v8::HandleScope new_scope(to_isolate);
+    v8::Local<v8::Context> deserialization_context =
+        v8::Context::New(to_isolate);
+    deserialization_context->Enter();
+    v8::MaybeLocal<v8::WasmCompiledModule> mod =
+        v8::WasmCompiledModule::FromTransferrableModule(to_isolate, store[0]);
+    CHECK(!mod.IsEmpty());
+  }
+}
+
 TEST(MemorySize) {
   {
     // Initial memory size is 16, see wasm-module-builder.cc
     static const int kExpectedValue = 16;
     TestSignatures sigs;
     v8::internal::AccountingAllocator allocator;
     Zone zone(&allocator, ZONE_NAME);
 
     WasmModuleBuilder* builder = new (&zone) WasmModuleBuilder(&zone);
     WasmFunctionBuilder* f = builder->AddFunction(sigs.i_v());
@@ skipping 550 matching lines @@
                                               ModuleOrigin::kWasmOrigin);
     CHECK_EQ(kExpectedValue, result);
     // Free the buffer as the tracker does not know about it.
     if (!memory->has_guard_region()) {
       isolate->array_buffer_allocator()->Free(
           memory->backing_store(), NumberToSize(memory->byte_length()));
     }
   }
   Cleanup();
 }