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Kmake/deps/v8/test/mjsunit/wasm/memory-control.js
2026-05-26 23:36:42 -07:00

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JavaScript

// Copyright 2024 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.
// Flags: --experimental-wasm-memory-control
d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
const descriptor = d8.file.create_wasm_memory_map_descriptor(
"test/mjsunit/wasm/wasm-module-builder.js");
const file_content = d8.file.read('test/mjsunit/wasm/wasm-module-builder.js');
const memory = new WebAssembly.Memory({initial: 10});
descriptor.map(memory, 0x10000);
const view = new Uint8Array(memory.buffer);
for (let i = 0; i < file_content.length; ++i) {
assertEquals(view[i + 0x10000], file_content.charCodeAt(i));
}
descriptor.unmap();
for (let i = 0; i < file_content.length; ++i) {
assertEquals(view[i + 0x10000], 0);
}
const empty_descriptor =
new WebAssembly.MemoryMapDescriptor(file_content.length);
empty_descriptor.map(memory, 0x10000);
for (let i = 0; i < file_content.length; ++i) {
assertEquals(view[i + 0x10000], 0);
}