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// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize||!this.SharedArrayBuffer
// Test TypedArray constructor when called with growable SharedArrayBuffers.
function testSharedArrayBuffer() {
function test() {
var N = 200;
var sab = new SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < N; ++i) {
var ta = new Int32Array(sab);
assertEq(ta.length, 4 + i);
// Ensure auto-length tracking works correctly.
sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 5 + i);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testSharedArrayBuffer();
function testSharedArrayBufferAndByteOffset() {
function test() {
var N = 200;
var sab = new SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < N; ++i) {
var ta = new Int32Array(sab, Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 3 + i);
// Ensure auto-length tracking works correctly.
sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 4 + i);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testSharedArrayBufferAndByteOffset();
function testSharedArrayBufferAndByteOffsetAndLength() {
function test() {
var N = 200;
var sab = new SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < N; ++i) {
var ta = new Int32Array(sab, Int32Array.BYTES_PER_ELEMENT, 2);
assertEq(ta.length, 2);
// Ensure length doesn't change when resizing the buffer.
sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 2);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testSharedArrayBufferAndByteOffsetAndLength();
function testWrappedSharedArrayBuffer() {
var g = newGlobal();
function test() {
var N = 200;
var sab = new g.SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < N; ++i) {
var ta = new Int32Array(sab);
assertEq(ta.length, 4 + i);
// Ensure auto-length tracking works correctly.
sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 5 + i);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testWrappedSharedArrayBuffer();