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| 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --expose-wasm --expose-gc |
| 6 |
| 7 load("test/mjsunit/wasm/wasm-constants.js"); |
| 8 load("test/mjsunit/wasm/wasm-module-builder.js"); |
| 9 |
| 10 let nogc = () => {}; |
| 11 |
| 12 function newModule() { |
| 13 let builder = new WasmModuleBuilder(); |
| 14 builder.addMemory(1, 1, true); |
| 15 builder.addFunction("main", kSig_i) |
| 16 .addBody([kExprI32Const, 0, kExprI32LoadMem, 0, 0]) |
| 17 .exportFunc(); |
| 18 |
| 19 return new WebAssembly.Module(builder.toBuffer()); |
| 20 } |
| 21 |
| 22 function newInstance(module, val) { |
| 23 var instance = new WebAssembly.Instance(module); |
| 24 var view = new Int32Array(instance.exports.memory.buffer); |
| 25 view[0] = val; |
| 26 return instance; |
| 27 } |
| 28 |
| 29 function TestSingleLiveInstance(gc) { |
| 30 let module = newModule(); |
| 31 |
| 32 print("TestSingleLiveInstance..."); |
| 33 for (var i = 0; i < 5; i++) { |
| 34 (() => { // don't leak references between iterations. |
| 35 print(" [" + i + "]..."); |
| 36 gc(); |
| 37 var instance = newInstance(module, i + 99); |
| 38 assertEquals(i + 99, instance.exports.main()); |
| 39 })(); |
| 40 } |
| 41 } |
| 42 |
| 43 TestSingleLiveInstance(nogc); |
| 44 TestSingleLiveInstance(gc); |
| 45 |
| 46 function TestMultiInstance(gc) { |
| 47 let module = newModule(); |
| 48 |
| 49 print("TestMultiInstance..."); |
| 50 // Note: compute the root instances in another function to be |
| 51 // sure that {roots} really is the only set of roots to the instances. |
| 52 let roots = (() => { return [ |
| 53 newInstance(module, 33), |
| 54 newInstance(module, 4444), |
| 55 newInstance(module, 555555) |
| 56 ];})(); |
| 57 |
| 58 (() => { // don't leak references! |
| 59 print(" [0]..."); |
| 60 gc(); |
| 61 assertEquals(33, roots[0].exports.main()); |
| 62 roots[0] = null; |
| 63 })(); |
| 64 |
| 65 (() => { // don't leak references! |
| 66 print(" [1]..."); |
| 67 gc(); |
| 68 assertEquals(4444, roots[1].exports.main()); |
| 69 roots[1] = null; |
| 70 })(); |
| 71 |
| 72 (() => { // don't leak references! |
| 73 print(" [2]..."); |
| 74 gc(); |
| 75 assertEquals(555555, roots[2].exports.main()); |
| 76 roots[2] = null; |
| 77 })(); |
| 78 } |
| 79 |
| 80 TestMultiInstance(nogc); |
| 81 TestMultiInstance(gc); |
| 82 |
| 83 function TestReclaimingCompiledModule() { |
| 84 let module = newModule(); |
| 85 |
| 86 print("TestReclaimingCompiledModule..."); |
| 87 let roots = (() => { return [ |
| 88 newInstance(module, 7777), |
| 89 newInstance(module, 8888), |
| 90 ];})(); |
| 91 |
| 92 (() => { // don't leak references! |
| 93 print(" [0]..."); |
| 94 assertEquals(7777, roots[0].exports.main()); |
| 95 assertEquals(8888, roots[1].exports.main()); |
| 96 roots[1] = null; |
| 97 })(); |
| 98 |
| 99 (() => { // don't leak references! |
| 100 print(" [1]..."); |
| 101 gc(); |
| 102 roots[1] = newInstance(module, 9999); |
| 103 assertEquals(7777, roots[0].exports.main()); |
| 104 assertEquals(9999, roots[1].exports.main()); |
| 105 roots[0] = null; |
| 106 roots[1] = null; |
| 107 })(); |
| 108 |
| 109 (() => { // don't leak references! |
| 110 print(" [2]..."); |
| 111 gc(); |
| 112 roots[0] = newInstance(module, 11111); |
| 113 roots[1] = newInstance(module, 22222); |
| 114 assertEquals(11111, roots[0].exports.main()); |
| 115 assertEquals(22222, roots[1].exports.main()); |
| 116 roots[0] = null; |
| 117 roots[1] = null; |
| 118 })(); |
| 119 } |
| 120 |
| 121 TestReclaimingCompiledModule(nogc); |
| 122 TestReclaimingCompiledModule(gc); |
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