125 lines
4.2 KiB
JavaScript
125 lines
4.2 KiB
JavaScript
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// Copyright 2016 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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// Flags: --expose-wasm --expose-gc
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load("test/mjsunit/wasm/wasm-constants.js");
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load("test/mjsunit/wasm/wasm-module-builder.js");
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// This test verifies that when instances are exported, Gc'ed, the other
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// instances in the chain still maintain a consistent view of the memory.
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(function InstanceMemoryGcStress() {
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print("InstanceMemoryGcStress");
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let memory = new WebAssembly.Memory({initial: 100, maximum: 1500});
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var builder = new WasmModuleBuilder();
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builder.addImportedMemory("imported_mem");
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builder.addFunction("mem_size", kSig_i_v)
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.addBody([kExprMemorySize, kMemoryZero])
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.exportFunc();
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builder.addFunction("grow", kSig_i_i)
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.addBody([kExprGetLocal, 0, kExprGrowMemory, kMemoryZero])
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.exportFunc();
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var instances = [];
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for (var i = 0; i < 5; i++) {
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gc();
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instances.push(builder.instantiate({imported_mem: memory}));
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}
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function grow_instance_0(pages) { return instances[0].exports.grow(pages); }
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function grow_instance_1(pages) { return instances[1].exports.grow(pages); }
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function grow_instance_2(pages) { return instances[2].exports.grow(pages); }
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function grow_instance_3(pages) { return instances[3].exports.grow(pages); }
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function grow_instance_4(pages) { return instances[4].exports.grow(pages); }
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var start_index = 0;
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var end_index = 5;
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function verify_mem_size(expected_pages) {
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assertEquals(expected_pages*kPageSize, memory.buffer.byteLength);
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for (var i = start_index; i < end_index; i++) {
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assertEquals(expected_pages, instances[i].exports.mem_size());
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}
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}
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// Verify initial memory size of all instances, grow and verify that all
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// instances are updated correctly.
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verify_mem_size(100);
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assertEquals(100, memory.grow(500));
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verify_mem_size(600);
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instances[1] = null;
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gc();
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gc();
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// i[0] - i[2] - i[3] - i[4]
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start_index = 2;
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verify_mem_size(600);
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assertEquals(600, instances[0].exports.mem_size());
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assertEquals(600, grow_instance_2(200));
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assertEquals(800*kPageSize, memory.buffer.byteLength);
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verify_mem_size(800);
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assertEquals(800, instances[0].exports.mem_size());
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// Instantiate a new instance and verify that it can be grown correctly.
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instances.push(builder.instantiate({imported_mem: memory}));
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function grow_instance_5(pages) { return instances[5].exports.grow(pages); }
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gc();
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gc();
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// i[0] - i[2] - i[3] - i[4] - i[5]
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start_index = 2;
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end_index = 6;
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verify_mem_size(800);
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assertEquals(800, instances[0].exports.mem_size());
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assertEquals(800, grow_instance_2(100));
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assertEquals(900*kPageSize, memory.buffer.byteLength);
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verify_mem_size(900);
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assertEquals(900, instances[0].exports.mem_size());
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instances[4] = null;
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gc();
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gc();
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// i[0] - i[2] - i[3] - i[5]
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assertEquals(900, instances[0].exports.mem_size());
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assertEquals(900, instances[2].exports.mem_size());
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assertEquals(900, instances[3].exports.mem_size());
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assertEquals(900, instances[5].exports.mem_size());
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assertEquals(900, memory.grow(100));
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assertEquals(1000*kPageSize, memory.buffer.byteLength);
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assertEquals(1000, instances[0].exports.mem_size());
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assertEquals(1000, instances[2].exports.mem_size());
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assertEquals(1000, instances[3].exports.mem_size());
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assertEquals(1000, instances[5].exports.mem_size());
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gc();
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gc();
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instances[3] = null;
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// i[0] - i[2] - i[5]
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assertEquals(1000, instances[0].exports.mem_size());
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assertEquals(1000, instances[2].exports.mem_size());
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assertEquals(1000, instances[5].exports.mem_size());
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assertEquals(1000, memory.grow(100));
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assertEquals(1100*kPageSize, memory.buffer.byteLength);
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assertEquals(1100, instances[0].exports.mem_size());
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assertEquals(1100, instances[2].exports.mem_size());
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assertEquals(1100, instances[5].exports.mem_size());
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instances[0] = null;
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gc();
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gc();
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// i[2] - i[5]
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assertEquals(1100, instances[2].exports.mem_size());
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assertEquals(1100, instances[5].exports.mem_size());
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assertEquals(1100, grow_instance_5(1));
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gc();
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gc();
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assertEquals(1101*kPageSize, memory.buffer.byteLength);
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assertEquals(1101, instances[2].exports.mem_size());
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assertEquals(1101, instances[5].exports.mem_size());
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})();
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