forked from LeenkxTeam/Kmake
84 lines
2.8 KiB
C++
84 lines
2.8 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/api/api-inl.h"
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#include "src/objects/backing-store.h"
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#include "src/wasm/wasm-objects.h"
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#include "test/cctest/cctest.h"
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#include "test/cctest/heap/heap-utils.h"
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#include "test/cctest/manually-externalized-buffer.h"
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namespace v8::internal::wasm {
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using testing::ManuallyExternalizedBuffer;
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TEST(Run_WasmModule_Buffer_Externalized_Detach) {
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{
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// Regression test for
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// https://bugs.chromium.org/p/chromium/issues/detail?id=731046
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Isolate* isolate = CcTest::InitIsolateOnce();
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HandleScope scope(isolate);
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MaybeHandle<JSArrayBuffer> result =
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isolate->factory()->NewJSArrayBufferAndBackingStore(
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kWasmPageSize, InitializedFlag::kZeroInitialized);
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Handle<JSArrayBuffer> buffer = result.ToHandleChecked();
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// Embedder requests contents.
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ManuallyExternalizedBuffer external(buffer);
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JSArrayBuffer::Detach(buffer).Check();
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CHECK(buffer->was_detached());
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// Make sure we can write to the buffer without crashing
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uint32_t* int_buffer =
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reinterpret_cast<uint32_t*>(external.backing_store());
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int_buffer[0] = 0;
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// Embedder frees contents.
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}
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heap::InvokeMemoryReducingMajorGCs(CcTest::heap());
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}
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TEST(Run_WasmModule_Buffer_Externalized_Regression_UseAfterFree) {
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{
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// Regression test for https://crbug.com/813876
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Isolate* isolate = CcTest::InitIsolateOnce();
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HandleScope scope(isolate);
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MaybeDirectHandle<WasmMemoryObject> result = WasmMemoryObject::New(
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isolate, 1, 1, SharedFlag::kNotShared, wasm::AddressType::kI32);
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DirectHandle<WasmMemoryObject> memory_object = result.ToHandleChecked();
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Handle<JSArrayBuffer> buffer(memory_object->array_buffer(), isolate);
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{
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// Embedder requests contents.
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ManuallyExternalizedBuffer external(buffer);
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// Growing (even by 0) detaches the old buffer.
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WasmMemoryObject::Grow(isolate, memory_object, 0);
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CHECK(buffer->was_detached());
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// Embedder frees contents.
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}
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// Make sure the memory object has a new buffer that can be written to.
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uint32_t* int_buffer = reinterpret_cast<uint32_t*>(
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memory_object->array_buffer()->backing_store());
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int_buffer[0] = 0;
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}
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heap::InvokeMemoryReducingMajorGCs(CcTest::heap());
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}
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#if V8_TARGET_ARCH_64_BIT
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TEST(BackingStore_Reclaim) {
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// Make sure we can allocate memories without running out of address space.
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Isolate* isolate = CcTest::InitIsolateOnce();
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for (int i = 0; i < 256; ++i) {
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auto backing_store = BackingStore::AllocateWasmMemory(
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isolate, 1, 1, WasmMemoryFlag::kWasmMemory32, SharedFlag::kNotShared);
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CHECK(backing_store);
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}
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}
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#endif
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} // namespace v8::internal::wasm
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