grow-shared-memory.js 17.5 KB
Newer Older
1 2 3 4
// Copyright 2019 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.

5
d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

function assertIsWasmSharedMemory(memory) {
 assertTrue(memory instanceof Object,
     "Memory is not an object");
 assertTrue(memory instanceof WebAssembly.Memory,
     "Object is not WebAssembly.Memory" );
 assertTrue(memory.buffer instanceof SharedArrayBuffer,
     "Memory.buffer is not a SharedArrayBuffer");
 assertTrue(Object.isFrozen(memory.buffer),
     "Memory.buffer not frozen");
}

function assertTrue(value, msg) {
  if (!value) {
    postMessage("Error: " + msg);
    throw new Error("Exit");  // To stop testing.
  }
}

let workerHelpers = assertTrue.toString() + assertIsWasmSharedMemory.toString();

27 28 29 30 31 32 33 34
(function TestGrowSharedMemoryWithoutPostMessage() {
  print(arguments.callee.name);
  let memory = new WebAssembly.Memory({initial: 1, maximum: 5, shared: true});
  assertEquals(memory.buffer.byteLength, kPageSize);
  assertEquals(1, memory.grow(1));
  assertEquals(memory.buffer.byteLength, 2 * kPageSize);
})();

35 36
(function TestPostMessageWithGrow() {
  print(arguments.callee.name);
37 38 39 40 41 42 43 44 45 46 47 48
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(1 === obj.memory.grow(1));
      assertTrue(obj.memory.buffer.byteLength === obj.expected_size);
      assertIsWasmSharedMemory(obj.memory);
      postMessage("OK");
    }
  }
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

  let memory = new WebAssembly.Memory({initial: 1, maximum: 5, shared: true});
  let obj = {memory: memory, expected_size: 2 * kPageSize};
  assertEquals(obj.memory.buffer.byteLength, kPageSize);
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  assertEquals(obj.memory.buffer.byteLength, 2 * kPageSize);
  worker.terminate();
})();


// PostMessage from two different workers, and assert that the grow
// operations are performed on the same memory object.
(function TestWorkersWithGrowEarlyWorkerTerminate() {
  print(arguments.callee.name);
64 65 66
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
67 68 69 70 71
       assertIsWasmSharedMemory(obj.memory);
       obj.memory.grow(1);
       assertIsWasmSharedMemory(obj.memory);
       assertTrue(obj.memory.buffer.byteLength === obj.expected_size);
       postMessage("OK");
72 73
    };
  }
74

75 76 77 78
  let workers = [new Worker(workerCode,
                            {type: 'function', arguments: [workerHelpers]}),
                 new Worker(workerCode,
                            {type: 'function', arguments: [workerHelpers]})];
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
  let memory = new WebAssembly.Memory({initial: 1, maximum: 5, shared: true});
  let expected_pages = 1;
  for (let worker of workers) {
    assertEquals(memory.buffer.byteLength, expected_pages++ * kPageSize);
    let obj = {memory: memory, expected_size: expected_pages * kPageSize};
    worker.postMessage(obj);
    assertEquals("OK", worker.getMessage());
    assertEquals(memory.buffer.byteLength, expected_pages * kPageSize);
    worker.terminate();
  }
  assertEquals(memory.buffer.byteLength, expected_pages * kPageSize);
})();

// PostMessage of Multiple memories and grow
(function TestGrowSharedWithMultipleMemories() {
  print(arguments.callee.name);
95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      let expected_size = 0;
      let kPageSize = 0x10000;
      for (let memory of obj.memories) {
        assertIsWasmSharedMemory(memory);
        assertTrue(expected_size === memory.grow(2));
        expected_size+=2;
        assertIsWasmSharedMemory(memory);
        assertTrue(memory.buffer.byteLength === expected_size * kPageSize);
      }
      postMessage("OK");
    };
  }
110

111 112
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
  let memories = [new WebAssembly.Memory({initial: 0, maximum: 2, shared: true}),
                  new WebAssembly.Memory({initial: 2, maximum: 10, shared: true}),
                  new WebAssembly.Memory({initial: 4, maximum: 12, shared: true})];
  let obj = {memories: memories};
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  assertEquals(2 * kPageSize, memories[0].buffer.byteLength);
  assertEquals(4 * kPageSize, memories[1].buffer.byteLength);
  assertEquals(6 * kPageSize, memories[2].buffer.byteLength);
  worker.terminate();
})();

// SharedMemory Object shared between different instances
(function TestPostMessageJSAndWasmInterop() {
  print(arguments.callee.name);
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      let kPageSize = 0x10000;
      assertIsWasmSharedMemory(obj.memory);
      let instance = new WebAssembly.Instance(
          obj.module, {m: {memory: obj.memory}});
      assertTrue(5 === obj.memory.grow(10));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 15 * kPageSize);
      assertTrue(15 === instance.exports.grow(5));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 20 * kPageSize);
      postMessage("OK");
    }
  }
144

145 146
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
147 148 149 150
  let memory = new WebAssembly.Memory({initial: 5, maximum: 50, shared: true});
  var builder = new WasmModuleBuilder();
  builder.addImportedMemory("m", "memory", 5, 100, "shared");
  builder.addFunction("grow", kSig_i_i)
151
    .addBody([kExprLocalGet, 0, kExprMemoryGrow, kMemoryZero])
152 153 154 155 156 157 158 159 160 161 162 163
    .exportFunc();
  var module = new WebAssembly.Module(builder.toBuffer());
  let obj = {memory: memory, module: module};
  assertEquals(obj.memory.buffer.byteLength, 5 * kPageSize);
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  worker.terminate();
  assertEquals(obj.memory.buffer.byteLength, 20 * kPageSize);
})();

(function TestConsecutiveJSAndWasmSharedGrow() {
  print(arguments.callee.name);
164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      let kPageSize = 0x10000;
      assertIsWasmSharedMemory(obj.memory);
      let instance = new WebAssembly.Instance(
          obj.module, {m: {memory: obj.memory}});
      assertTrue(5 === obj.memory.grow(10));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 15 * kPageSize);
      assertTrue(15 === instance.exports.grow(5));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 20 * kPageSize);
      postMessage("OK");
    }
  }
180

181 182
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
183 184 185 186
  let memory = new WebAssembly.Memory({initial: 5, maximum: 50, shared: true});
  var builder = new WasmModuleBuilder();
  builder.addImportedMemory("m", "memory", 5, 100, "shared");
  builder.addFunction("grow", kSig_i_i)
187
    .addBody([kExprLocalGet, 0, kExprMemoryGrow, kMemoryZero])
188 189 190 191 192 193 194 195 196 197 198
    .exportFunc();
  var module = new WebAssembly.Module(builder.toBuffer());
  let obj = {memory: memory, module: module};
  assertEquals(obj.memory.buffer.byteLength, 5 * kPageSize);
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  assertEquals(obj.memory.buffer.byteLength, 20 * kPageSize);
})();

(function TestConsecutiveWasmSharedGrow() {
  print(arguments.callee.name);
199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      let kPageSize = 0x10000;
      assertIsWasmSharedMemory(obj.memory);
      let instance = new WebAssembly.Instance(
          obj.module, {m: {memory: obj.memory}});
      assertTrue(5 === obj.memory.grow(10));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 15 * kPageSize);
      assertTrue(17 === instance.exports.grow_twice(2));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 19 * kPageSize);
      postMessage("OK");
    }
  }
215

216 217
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
218 219 220 221
  let memory = new WebAssembly.Memory({initial: 5, maximum: 50, shared: true});
  var builder = new WasmModuleBuilder();
  builder.addImportedMemory("m", "memory", 5, 100, "shared");
  builder.addFunction("grow_twice", kSig_i_i)
222
    .addBody([kExprLocalGet, 0,
223 224
        kExprMemoryGrow, kMemoryZero,
        kExprDrop,
225
        kExprLocalGet, 0,
226 227 228 229 230 231 232 233 234 235 236 237 238 239 240
        kExprMemoryGrow, kMemoryZero])
    .exportFunc();
  var module = new WebAssembly.Module(builder.toBuffer());
  let obj = {memory: memory, module: module};
  assertEquals(obj.memory.buffer.byteLength, 5 * kPageSize);
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  assertEquals(obj.memory.buffer.byteLength, 19 * kPageSize);
  let instance = new WebAssembly.Instance(module, {m: {memory: memory}});
  assertEquals(21, instance.exports.grow_twice(2));
  assertEquals(obj.memory.buffer.byteLength, 23 * kPageSize);
})();

(function TestConsecutiveSharedGrowAndMemorySize() {
  print(arguments.callee.name);
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      let kPageSize = 0x10000;
      assertIsWasmSharedMemory(obj.memory);
      let instance = new WebAssembly.Instance(
          obj.module, {m: {memory: obj.memory}});
      assertTrue(5 === obj.memory.grow(10));
      assertTrue(15 === instance.exports.memory_size());
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 15 * kPageSize);
      assertTrue(19 === instance.exports.grow_and_size(2));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 19 * kPageSize);
      postMessage("OK");
    }
  }
258

259 260
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
261 262 263 264
  let memory = new WebAssembly.Memory({initial: 5, maximum: 50, shared: true});
  var builder = new WasmModuleBuilder();
  builder.addImportedMemory("m", "memory", 5, 100, "shared");
  builder.addFunction("grow_and_size", kSig_i_i)
265
    .addBody([kExprLocalGet, 0,
266 267
        kExprMemoryGrow, kMemoryZero,
        kExprDrop,
268
        kExprLocalGet, 0,
269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293
        kExprMemoryGrow, kMemoryZero,
        kExprDrop,
        kExprMemorySize, kMemoryZero])
    .exportFunc();
  builder.addFunction("memory_size", kSig_i_v)
    .addBody([kExprMemorySize, kMemoryZero])
    .exportFunc();
  var module = new WebAssembly.Module(builder.toBuffer());
  let obj = {memory: memory, module: module};
  assertEquals(obj.memory.buffer.byteLength, 5 * kPageSize);
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  assertEquals(memory.buffer.byteLength, 19 * kPageSize);
  let instance = new WebAssembly.Instance(module, {m: {memory: memory}});
  assertEquals(23, instance.exports.grow_and_size(2));
  assertEquals(obj.memory.buffer.byteLength, 23 * kPageSize);
  assertEquals(23, memory.grow(2));
  assertEquals(25, instance.exports.memory_size());
})();

// Only spot checking here because currently the underlying buffer doesn't move.
// In the case that the underlying buffer does move, more comprehensive memory
// integrity checking and bounds checks testing are needed.
(function TestSpotCheckMemoryWithSharedGrow() {
  print(arguments.callee.name);
294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
  function workerCode(workerHelpers) {
    eval(workerHelpers);
    onmessage = function(obj) {
      let kPageSize = 0x10000;
      assertIsWasmSharedMemory(obj.memory);
      let instance = new WebAssembly.Instance(
          obj.module, {m: {memory: obj.memory}});
      assertTrue(5 === obj.memory.grow(10));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 15 * kPageSize);
      // Store again, and verify that the previous stores are still reflected.
      instance.exports.atomic_store(15 * kPageSize - 4, 0xACED);
      assertTrue(0xACED === instance.exports.atomic_load(0));
      assertTrue(0xACED === instance.exports.atomic_load(5 * kPageSize - 4));
      assertTrue(0xACED === instance.exports.atomic_load(15 * kPageSize - 4));
      assertTrue(15 === instance.exports.grow(2));
      assertIsWasmSharedMemory(obj.memory);
      assertTrue(obj.memory.buffer.byteLength === 17 * kPageSize);
      // Validate previous writes.
      instance.exports.atomic_store(17 * kPageSize - 4, 0xACED);
      assertTrue(0xACED === instance.exports.atomic_load(0));
      assertTrue(0xACED === instance.exports.atomic_load(5 * kPageSize - 4));
      assertTrue(0xACED === instance.exports.atomic_load(15 * kPageSize - 4));
      assertTrue(0xACED === instance.exports.atomic_load(17 * kPageSize - 4));
      postMessage("OK");
    }
  }
321

322 323
  let worker = new Worker(workerCode,
                          {type: 'function', arguments: [workerHelpers]});
324 325 326 327
  let memory = new WebAssembly.Memory({initial: 5, maximum: 50, shared: true});
  var builder = new WasmModuleBuilder();
  builder.addImportedMemory("m", "memory", 5, 100, "shared");
  builder.addFunction("grow", kSig_i_i)
328
    .addBody([kExprLocalGet, 0, kExprMemoryGrow, kMemoryZero])
329 330
    .exportFunc();
  builder.addFunction("atomic_load", kSig_i_i)
331
    .addBody([kExprLocalGet, 0, kAtomicPrefix, kExprI32AtomicLoad, 2, 0])
332 333
    .exportFunc();
  builder.addFunction("atomic_store", kSig_v_ii)
334
    .addBody([kExprLocalGet, 0, kExprLocalGet, 1,
335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367
      kAtomicPrefix, kExprI32AtomicStore, 2, 0])
    .exportFunc();
  var module = new WebAssembly.Module(builder.toBuffer());
  let instance = new WebAssembly.Instance(module, {m: {memory: memory}});
  // Store at first and last accessible 32 bit offset.
  instance.exports.atomic_store(0, 0xACED);
  instance.exports.atomic_store(5 * kPageSize - 4, 0xACED);
  // Verify that these were stored.
  assertEquals(0xACED, instance.exports.atomic_load(0));
  assertEquals(0xACED, instance.exports.atomic_load(5 * kPageSize - 4));
  // Verify bounds.
  assertTraps(kTrapMemOutOfBounds,
      () => instance.exports.atomic_load(5 * kPageSize - 3));
  let obj = {memory: memory, module: module};
  assertEquals(obj.memory.buffer.byteLength, 5 * kPageSize);
  // PostMessage
  worker.postMessage(obj);
  assertEquals("OK", worker.getMessage());
  assertEquals(memory.buffer.byteLength, 17 * kPageSize);
  assertEquals(17, instance.exports.grow(2));
  assertEquals(obj.memory.buffer.byteLength, 19 * kPageSize);
  // Validate previous writes, and check bounds.
  assertTrue(0xACED === instance.exports.atomic_load(0));
  assertTrue(0xACED === instance.exports.atomic_load(5 * kPageSize - 4));
  assertTrue(0xACED === instance.exports.atomic_load(15 * kPageSize - 4));
  assertTrue(0xACED === instance.exports.atomic_load(17 * kPageSize - 4));
  assertTraps(kTrapMemOutOfBounds,
      () => instance.exports.atomic_load(19 * kPageSize - 3));
  assertEquals(19, memory.grow(6));
  assertEquals(obj.memory.buffer.byteLength, 25 * kPageSize);
  assertTraps(kTrapMemOutOfBounds,
      () => instance.exports.atomic_load(25 * kPageSize - 3));
})();
368 369 370 371 372 373 374 375

(function TestMemoryBufferTypeAfterGrow() {
  const memory = new WebAssembly.Memory({
    "initial": 1, "maximum": 2, "shared": true });
  assertInstanceof(memory.buffer, SharedArrayBuffer);
  assertEquals(memory.grow(1), 1);
  assertInstanceof(memory.buffer, SharedArrayBuffer);
})();
376 377 378 379 380 381

(function TestSharedMemoryGrowByZero() {
  const memory = new WebAssembly.Memory({
    "initial": 1, "maximum": 2, "shared": true });
  assertEquals(memory.grow(0), 1);
})();
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453

// Tests that a function receives the update of a shared memory's size if a
// loop's stack guard gets invoked. This is not strictly required by spec, but
// we implement it as an optimization.
(function TestStackGuardUpdatesMemorySize() {
  print(arguments.callee.name);

  let initial_size = 1;
  let final_size = 2;

  let memory = new WebAssembly.Memory({initial: 1, maximum: 5, shared: true});

  let sync_index = 64;
  let sync_value = 42;

  let builder = new WasmModuleBuilder();
  builder.addImportedMemory("mod", "mem", 1, 5, true);
  // int x;
  // while (true) {
  //   memory[sync_index] = sync_value;
  //   x = memory_size();
  //   if (x != 1) break;
  // }
  // return x;
  builder.addFunction("main", kSig_i_v)
    .addLocals(kWasmI32, 1)
    .addBody([
      kExprLoop, kWasmVoid,
        ...wasmI32Const(sync_index),
        ...wasmI32Const(sync_value),
        kAtomicPrefix, kExprI32AtomicStore, 0, 0,
        kExprMemorySize, 0, kExprLocalTee, 0,
        kExprI32Const, initial_size,
        kExprI32Eq,
        kExprBrIf, 0,
      kExprEnd,
      kExprLocalGet, 0])
    .exportFunc();

  builder.addFunction("setter", kSig_v_ii)
      .addBody([kExprLocalGet, 0, kExprLocalGet, 1,
                kAtomicPrefix, kExprI32AtomicStore, 0, 0])
      .exportFunc();

  builder.addFunction("getter", kSig_i_i)
      .addBody([kExprLocalGet, 0, kAtomicPrefix, kExprI32AtomicLoad, 0, 0])
      .exportFunc();

  let module = new WebAssembly.Module(builder.toBuffer());

  function workerCode() {
    onmessage = function(obj) {
      let instance = new WebAssembly.Instance(
          obj.module, {mod: {mem: obj.memory}});
      let res = instance.exports.main();
      postMessage(res);
    }
  }

  let worker = new Worker(workerCode,
                          {type: 'function', arguments: []});
  worker.postMessage({module: module, memory: memory});

  let instance = new WebAssembly.Instance(module, {mod: {mem: memory}});

  // Make sure the worker thread has entered the loop.
  while (instance.exports.getter(sync_index) != sync_value) {}

  memory.grow(final_size - initial_size);

  assertEquals(final_size, worker.getMessage());
})();