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352a525eb9
PR-URL: https://github.com/nodejs/node/pull/19989 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Myles Borins <myles.borins@gmail.com>
89 lines
2.5 KiB
JavaScript
89 lines
2.5 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --expose-wasm --expose-gc --allow-natives-syntax
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load("test/mjsunit/wasm/wasm-constants.js");
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load("test/mjsunit/wasm/wasm-module-builder.js");
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// Use global variables for all values where the test wants to maintain strict
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// control over value lifetime. Using local variables would not give sufficient
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// guarantees of the value lifetime.
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var module;
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var instance1;
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var instance2;
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var instance3;
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var instance4;
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(function CompiledModuleInstancesInitialize1to3() {
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var builder = new WasmModuleBuilder();
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builder.addMemory(1,1, true);
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builder.addImport("", "getValue", kSig_i_v);
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builder.addFunction("f", kSig_i_v)
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.addBody([
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kExprCallFunction, 0
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]).exportFunc();
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module = new WebAssembly.Module(builder.toBuffer());
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print("Initial module");
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%ValidateWasmModuleState(module);
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print("Initial instances=0");
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%ValidateWasmInstancesChain(module, 0);
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instance1 = new WebAssembly.Instance(module, {"": {getValue: () => 1}});
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print("Initial instances=1");
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%ValidateWasmInstancesChain(module, 1);
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instance2 = new WebAssembly.Instance(module, {"": {getValue: () => 2}});
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print("Initial instances=2");
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%ValidateWasmInstancesChain(module, 2);
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instance3 = new WebAssembly.Instance(module, {"": {getValue: () => 3}});
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print("Initial instances=3");
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%ValidateWasmInstancesChain(module, 3);
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})();
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(function CompiledModuleInstancesClear1() {
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assertEquals(1, instance1.exports.f());
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instance1 = null;
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})();
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gc();
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print("After gc instances=2");
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%ValidateWasmInstancesChain(module, 2);
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(function CompiledModuleInstancesClear3() {
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assertEquals(3, instance3.exports.f());
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instance3 = null;
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})();
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gc();
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print("After gc instances=1");
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%ValidateWasmInstancesChain(module, 1);
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(function CompiledModuleInstancesClear2() {
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assertEquals(2, instance2.exports.f());
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instance2 = null;
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})();
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// Note that two GC's are required because weak cells are not cleared
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// in the same cycle that the instance finalizer is run.
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gc();
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gc();
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print("After gc module state");
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%ValidateWasmModuleState(module);
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(function CompiledModuleInstancesInitialize4AndClearModule() {
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instance4 = new WebAssembly.Instance(module, {"": {getValue: () => 4}});
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assertEquals(4, instance4.exports.f());
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module = null;
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})();
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gc();
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// the first GC will clear the module, the second the instance.
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gc();
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%ValidateWasmOrphanedInstance(instance4);
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