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