36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
JavaScript
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// Copyright 2020 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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// Save some memory on Linux; other platforms ignore this flag.
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// Flags: --multi-mapped-mock-allocator
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// Test that we can grow memories to sizes beyond 2GB.
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load("test/mjsunit/wasm/wasm-module-builder.js");
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function GetMemoryPages(memory) {
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return memory.buffer.byteLength >>> 16;
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}
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(function TestGrowFromJS() {
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let mem = new WebAssembly.Memory({initial: 200});
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mem.grow(40000);
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assertEquals(40200, GetMemoryPages(mem));
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})();
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(function TestGrowFromWasm() {
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let builder = new WasmModuleBuilder();
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builder.addMemory(200, 50000, true);
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builder.addFunction("grow", kSig_i_v)
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.addBody([
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...wasmI32Const(40000), // Number of pages to grow by.
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kExprMemoryGrow, kMemoryZero, // Grow memory.
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kExprDrop, // Drop result of grow (old pages).
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kExprMemorySize, kMemoryZero // Get the memory size.
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]).exportFunc();
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let instance = builder.instantiate();
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assertEquals(40200, instance.exports.grow());
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assertEquals(40200, GetMemoryPages(instance.exports.memory));
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})();
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