v8/test/mjsunit/wasm/instantiate-module-basic.js

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// Copyright 2015 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: --expose-wasm
load("test/mjsunit/wasm/wasm-constants.js");
load("test/mjsunit/wasm/wasm-module-builder.js");
let kReturnValue = 117;
let buffer = (() => {
let builder = new WasmModuleBuilder();
builder.addMemory(1, 1, true);
builder.addFunction("main", kSig_i)
.addBody([kExprI8Const, kReturnValue])
.exportFunc();
return builder.toBuffer();
})()
function CheckInstance(instance) {
assertFalse(instance === undefined);
assertFalse(instance === null);
assertFalse(instance === 0);
assertEquals("object", typeof instance);
// Check the memory is an ArrayBuffer.
var mem = instance.exports.memory;
assertFalse(mem === undefined);
assertFalse(mem === null);
assertFalse(mem === 0);
assertEquals("object", typeof mem);
assertTrue(mem instanceof ArrayBuffer);
for (let i = 0; i < 4; i++) {
instance.exports.memory = 0; // should be ignored
assertSame(mem, instance.exports.memory);
}
assertEquals(65536, instance.exports.memory.byteLength);
// Check the properties of the main function.
let main = instance.exports.main;
assertFalse(main === undefined);
assertFalse(main === null);
assertFalse(main === 0);
assertEquals("function", typeof main);
assertEquals(kReturnValue, main());
}
// Deprecated experimental API.
CheckInstance(Wasm.instantiateModule(buffer));
// Official API
let module = new WebAssembly.Module(buffer);
CheckInstance(new WebAssembly.Instance(module));
let promise = WebAssembly.compile(buffer);
promise.then(module => CheckInstance(new WebAssembly.Instance(module)));
// Negative tests.
(function InvalidModules() {
let invalid_cases = [undefined, 1, "", "a", {some:1, obj: "b"}];
let len = invalid_cases.length;
for (var i = 0; i < len; ++i) {
try {
let instance = new WebAssembly.Instance(1);
assertUnreachable("should not be able to instantiate invalid modules.");
} catch (e) {
assertContains("Argument 0", e.toString());
}
}
})();
// Compile async an invalid blob.
(function InvalidBinaryAsyncCompilation() {
let builder = new WasmModuleBuilder();
builder.addFunction("f", kSig_i_i)
.addBody([kExprCallImport, kArity0, 0]);
let promise = WebAssembly.compile(builder.toBuffer());
promise
.then(compiled =>
assertUnreachable("should not be able to compile invalid blob."))
.catch(e => assertContains("invalid signature index", e.toString()));
})();
// Multiple instances tests.
(function ManyInstances() {
let compiled_module = new WebAssembly.Module(buffer);
let instance_1 = new WebAssembly.Instance(compiled_module);
let instance_2 = new WebAssembly.Instance(compiled_module);
assertTrue(instance_1 != instance_2);
})();
(function ManyInstancesAsync() {
let promise = WebAssembly.compile(buffer);
promise.then(compiled_module => {
let instance_1 = new WebAssembly.Instance(compiled_module);
let instance_2 = new WebAssembly.Instance(compiled_module);
assertTrue(instance_1 != instance_2);
});
})();
(function InstancesAreIsolatedFromEachother() {
var builder = new WasmModuleBuilder();
builder.addMemory(1,1, true);
var kSig_v_i = makeSig([kAstI32], []);
var signature = builder.addType(kSig_v_i);
builder.addImport("some_value", kSig_i);
builder.addImport("writer", signature);
builder.addFunction("main", kSig_i_i)
.addBody([
kExprI32Const, 1,
kExprGetLocal, 0,
kExprI32LoadMem, 0, 0,
kExprCallIndirect, kArity1, signature,
kExprGetLocal,0,
kExprI32LoadMem,0, 0,
kExprCallImport, kArity0, 0,
kExprI32Add
]).exportFunc();
// writer(mem[i]);
// return mem[i] + some_value();
builder.addFunction("_wrap_writer", signature)
.addBody([
kExprGetLocal, 0,
kExprCallImport, kArity1, 1]);
builder.appendToTable([0, 1]);
var module = new WebAssembly.Module(builder.toBuffer());
var mem_1 = new ArrayBuffer(4);
var mem_2 = new ArrayBuffer(4);
var view_1 = new Int32Array(mem_1);
var view_2 = new Int32Array(mem_2);
view_1[0] = 42;
view_2[0] = 1000;
var outval_1;
var outval_2;
var i1 = new WebAssembly.Instance(module, {some_value: () => 1,
writer: (x)=>outval_1 = x }, mem_1);
var i2 = new WebAssembly.Instance(module, {some_value: () => 2,
writer: (x)=>outval_2 = x }, mem_2);
assertEquals(43, i1.exports.main(0));
assertEquals(1002, i2.exports.main(0));
assertEquals(42, outval_1);
assertEquals(1000, outval_2);
})();
(function GlobalsArePrivateToTheInstance() {
var builder = new WasmModuleBuilder();
Revert of [wasm] reuse the first compiled module (patchset #12 id:220001 of https://codereview.chromium.org/2305903002/ ) Reason for revert: mac gc stress failures: https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/8341 Original issue's description: > [wasm] reuse the first compiled module. > > This change avoids needing to keep around an unused compiled > module. Instead, the result of compiling the wasm bytes is > given to the first instance. The module object and that instance object > point to the same compiled module. Instances are, then, cloned from > the compiled module the module object points to. When an instance is > collected, we make sure that the module object still has a clone > available, and, if the last instance is GC-ed, we also reset the compiled > module so that it does not reference its heap, so that it (==heap) may > be collected. > > This is achieved by linking the clones in a double-linked list and > registering a finalizer for each. When we create an instance, we tie it > in the front of the list, making the module object point to it (O(1)). When > the finalizer is called, we relink the list over the dying object (O(1)). The > costliest operation is finalizing the last instance, since we need to visit > all wasm functions and reset heap references. > > BUG=v8:5316 > > Committed: https://crrev.com/01f5af515728aebe6c5246f4f7dd6c573e8748af > Cr-Commit-Position: refs/heads/master@{#39153} TBR=bradnelson@chromium.org,verwaest@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,mtrofin@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:5316 Review-Url: https://codereview.chromium.org/2306403002 Cr-Commit-Position: refs/heads/master@{#39154}
2016-09-05 10:49:33 +00:00
builder.addGlobal(kAstI32);
builder.addFunction("read", kSig_i_v)
.addBody([
Revert of [wasm] reuse the first compiled module (patchset #12 id:220001 of https://codereview.chromium.org/2305903002/ ) Reason for revert: mac gc stress failures: https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/8341 Original issue's description: > [wasm] reuse the first compiled module. > > This change avoids needing to keep around an unused compiled > module. Instead, the result of compiling the wasm bytes is > given to the first instance. The module object and that instance object > point to the same compiled module. Instances are, then, cloned from > the compiled module the module object points to. When an instance is > collected, we make sure that the module object still has a clone > available, and, if the last instance is GC-ed, we also reset the compiled > module so that it does not reference its heap, so that it (==heap) may > be collected. > > This is achieved by linking the clones in a double-linked list and > registering a finalizer for each. When we create an instance, we tie it > in the front of the list, making the module object point to it (O(1)). When > the finalizer is called, we relink the list over the dying object (O(1)). The > costliest operation is finalizing the last instance, since we need to visit > all wasm functions and reset heap references. > > BUG=v8:5316 > > Committed: https://crrev.com/01f5af515728aebe6c5246f4f7dd6c573e8748af > Cr-Commit-Position: refs/heads/master@{#39153} TBR=bradnelson@chromium.org,verwaest@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,mtrofin@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:5316 Review-Url: https://codereview.chromium.org/2306403002 Cr-Commit-Position: refs/heads/master@{#39154}
2016-09-05 10:49:33 +00:00
kExprGetGlobal, 0])
.exportFunc();
Revert of [wasm] reuse the first compiled module (patchset #12 id:220001 of https://codereview.chromium.org/2305903002/ ) Reason for revert: mac gc stress failures: https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/8341 Original issue's description: > [wasm] reuse the first compiled module. > > This change avoids needing to keep around an unused compiled > module. Instead, the result of compiling the wasm bytes is > given to the first instance. The module object and that instance object > point to the same compiled module. Instances are, then, cloned from > the compiled module the module object points to. When an instance is > collected, we make sure that the module object still has a clone > available, and, if the last instance is GC-ed, we also reset the compiled > module so that it does not reference its heap, so that it (==heap) may > be collected. > > This is achieved by linking the clones in a double-linked list and > registering a finalizer for each. When we create an instance, we tie it > in the front of the list, making the module object point to it (O(1)). When > the finalizer is called, we relink the list over the dying object (O(1)). The > costliest operation is finalizing the last instance, since we need to visit > all wasm functions and reset heap references. > > BUG=v8:5316 > > Committed: https://crrev.com/01f5af515728aebe6c5246f4f7dd6c573e8748af > Cr-Commit-Position: refs/heads/master@{#39153} TBR=bradnelson@chromium.org,verwaest@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,mtrofin@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:5316 Review-Url: https://codereview.chromium.org/2306403002 Cr-Commit-Position: refs/heads/master@{#39154}
2016-09-05 10:49:33 +00:00
builder.addFunction("write", kSig_v_i)
.addBody([
kExprGetLocal, 0,
kExprSetGlobal, 0])
.exportFunc();
var module = new WebAssembly.Module(builder.toBuffer());
Revert of [wasm] reuse the first compiled module (patchset #12 id:220001 of https://codereview.chromium.org/2305903002/ ) Reason for revert: mac gc stress failures: https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/8341 Original issue's description: > [wasm] reuse the first compiled module. > > This change avoids needing to keep around an unused compiled > module. Instead, the result of compiling the wasm bytes is > given to the first instance. The module object and that instance object > point to the same compiled module. Instances are, then, cloned from > the compiled module the module object points to. When an instance is > collected, we make sure that the module object still has a clone > available, and, if the last instance is GC-ed, we also reset the compiled > module so that it does not reference its heap, so that it (==heap) may > be collected. > > This is achieved by linking the clones in a double-linked list and > registering a finalizer for each. When we create an instance, we tie it > in the front of the list, making the module object point to it (O(1)). When > the finalizer is called, we relink the list over the dying object (O(1)). The > costliest operation is finalizing the last instance, since we need to visit > all wasm functions and reset heap references. > > BUG=v8:5316 > > Committed: https://crrev.com/01f5af515728aebe6c5246f4f7dd6c573e8748af > Cr-Commit-Position: refs/heads/master@{#39153} TBR=bradnelson@chromium.org,verwaest@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,mtrofin@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:5316 Review-Url: https://codereview.chromium.org/2306403002 Cr-Commit-Position: refs/heads/master@{#39154}
2016-09-05 10:49:33 +00:00
var i1 = new WebAssembly.Instance(module);
var i2 = new WebAssembly.Instance(module);
i1.exports.write(1);
i2.exports.write(2);
assertEquals(1, i1.exports.read());
assertEquals(2, i2.exports.read());
})();