514de317fb
This CL introduces the mechanism for conservative stack scanning (CSS). Behind a compile-time flag, it also introduces a CSS pass which scans the stack during the GC marking phase and marking verification. This pass is now redundant, i.e., it is not needed for the correctness of garbage collection. It will be used for experimenting with CSS and for benchmarking. Bug: v8:13257 Change-Id: If35bc24fde3bc08c5735d9e2f1b67724f7e31ef7 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3968710 Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Omer Katz <omerkatz@chromium.org> Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org> Cr-Commit-Position: refs/heads/main@{#84036}
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
// Copyright 2019 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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#include "src/execution/isolate.h"
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#include "src/wasm/c-api.h"
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#include "test/wasm-api-tests/wasm-api-test.h"
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namespace v8 {
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namespace internal {
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namespace wasm {
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namespace {
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bool g_callback_called;
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own<Trap> Callback(const Val args[], Val results[]) {
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g_callback_called = true;
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return nullptr;
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}
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} // namespace
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TEST_F(WasmCapiTest, Serialize) {
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FunctionSig sig(0, 0, nullptr);
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uint32_t callback_index =
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builder()->AddImport(base::CStrVector("callback"), &sig);
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byte code[] = {WASM_CALL_FUNCTION0(callback_index)};
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AddExportedFunction(base::CStrVector("run"), code, sizeof(code), &sig);
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Compile();
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vec<byte_t> serialized = module()->serialize();
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EXPECT_TRUE(serialized); // Serialization succeeded.
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// We reset the module and collect it to make sure the NativeModuleCache does
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// not contain it anymore. Otherwise deserialization will not happen.
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ResetModule();
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Heap* heap =
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reinterpret_cast<::wasm::StoreImpl*>(store())->i_isolate()->heap();
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ScanStackModeScopeForTesting no_stack_scanning(heap,
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Heap::ScanStackMode::kNone);
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heap->PreciseCollectAllGarbage(Heap::kForcedGC,
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GarbageCollectionReason::kTesting);
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heap->PreciseCollectAllGarbage(Heap::kForcedGC,
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GarbageCollectionReason::kTesting);
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own<Module> deserialized = Module::deserialize(store(), serialized);
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// Try to serialize the module again. This can fail if deserialization does
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// not set up a clean state.
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deserialized->serialize();
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own<FuncType> callback_type =
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FuncType::make(ownvec<ValType>::make(), ownvec<ValType>::make());
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own<Func> callback = Func::make(store(), callback_type.get(), Callback);
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Extern* imports[] = {callback.get()};
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own<Instance> instance = Instance::make(store(), deserialized.get(), imports);
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ownvec<Extern> exports = instance->exports();
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Func* run = exports[0]->func();
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g_callback_called = false;
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run->call();
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EXPECT_TRUE(g_callback_called);
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}
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} // namespace wasm
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} // namespace internal
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} // namespace v8
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