michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  */
michael@0: 
michael@0: #include "jsfriendapi.h"
michael@0: 
michael@0: #include "jsapi-tests/tests.h"
michael@0: 
michael@0: BEGIN_TEST(testArrayBuffer_bug720949_steal)
michael@0: {
michael@0:     static const unsigned NUM_TEST_BUFFERS  = 2;
michael@0:     static const unsigned MAGIC_VALUE_1 = 3;
michael@0:     static const unsigned MAGIC_VALUE_2 = 17;
michael@0: 
michael@0:     JS::RootedObject buf_len1(cx), buf_len200(cx);
michael@0:     JS::RootedObject tarray_len1(cx), tarray_len200(cx);
michael@0: 
michael@0:     uint32_t sizes[NUM_TEST_BUFFERS] = { sizeof(uint32_t), 200 * sizeof(uint32_t) };
michael@0:     JS::HandleObject testBuf[NUM_TEST_BUFFERS] = { buf_len1, buf_len200 };
michael@0:     JS::HandleObject testArray[NUM_TEST_BUFFERS] = { tarray_len1, tarray_len200 };
michael@0: 
michael@0:     // Single-element ArrayBuffer (uses fixed slots for storage)
michael@0:     CHECK(buf_len1 = JS_NewArrayBuffer(cx, sizes[0]));
michael@0:     CHECK(tarray_len1 = JS_NewInt32ArrayWithBuffer(cx, testBuf[0], 0, -1));
michael@0: 
michael@0:     JS_SetElement(cx, testArray[0], 0, MAGIC_VALUE_1);
michael@0: 
michael@0:     // Many-element ArrayBuffer (uses dynamic storage)
michael@0:     CHECK(buf_len200 = JS_NewArrayBuffer(cx, 200 * sizeof(uint32_t)));
michael@0:     CHECK(tarray_len200 = JS_NewInt32ArrayWithBuffer(cx, testBuf[1], 0, -1));
michael@0: 
michael@0:     for (unsigned i = 0; i < NUM_TEST_BUFFERS; i++) {
michael@0:         JS::HandleObject obj = testBuf[i];
michael@0:         JS::HandleObject view = testArray[i];
michael@0:         uint32_t size = sizes[i];
michael@0:         JS::RootedValue v(cx);
michael@0: 
michael@0:         // Byte lengths should all agree
michael@0:         CHECK(JS_IsArrayBufferObject(obj));
michael@0:         CHECK_EQUAL(JS_GetArrayBufferByteLength(obj), size);
michael@0:         JS_GetProperty(cx, obj, "byteLength", &v);
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(size));
michael@0:         JS_GetProperty(cx, view, "byteLength", &v);
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(size));
michael@0: 
michael@0:         // Modifying the underlying data should update the value returned through the view
michael@0:         uint8_t *data = JS_GetStableArrayBufferData(cx, obj);
michael@0:         CHECK(data != nullptr);
michael@0:         *reinterpret_cast<uint32_t*>(data) = MAGIC_VALUE_2;
michael@0:         CHECK(JS_GetElement(cx, view, 0, &v));
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(MAGIC_VALUE_2));
michael@0: 
michael@0:         // Steal the contents
michael@0:         void *contents = JS_StealArrayBufferContents(cx, obj);
michael@0:         CHECK(contents != nullptr);
michael@0:         CHECK(data != nullptr);
michael@0: 
michael@0:         // Check that the original ArrayBuffer is neutered
michael@0:         CHECK_EQUAL(JS_GetArrayBufferByteLength(obj), 0);
michael@0:         CHECK(JS_GetProperty(cx, obj, "byteLength", &v));
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(0));
michael@0:         CHECK(JS_GetProperty(cx, view, "byteLength", &v));
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(0));
michael@0:         CHECK(JS_GetProperty(cx, view, "byteOffset", &v));
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(0));
michael@0:         CHECK(JS_GetProperty(cx, view, "length", &v));
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(0));
michael@0:         CHECK_EQUAL(JS_GetArrayBufferByteLength(obj), 0);
michael@0:         v = JSVAL_VOID;
michael@0:         JS_GetElement(cx, obj, 0, &v);
michael@0:         CHECK_SAME(v, JSVAL_VOID);
michael@0: 
michael@0:         // Transfer to a new ArrayBuffer
michael@0:         JS::RootedObject dst(cx, JS_NewArrayBufferWithContents(cx, size, contents));
michael@0:         CHECK(JS_IsArrayBufferObject(dst));
michael@0:         data = JS_GetStableArrayBufferData(cx, obj);
michael@0: 
michael@0:         JS::RootedObject dstview(cx, JS_NewInt32ArrayWithBuffer(cx, dst, 0, -1));
michael@0:         CHECK(dstview != nullptr);
michael@0: 
michael@0:         CHECK_EQUAL(JS_GetArrayBufferByteLength(dst), size);
michael@0:         data = JS_GetStableArrayBufferData(cx, dst);
michael@0:         CHECK(data != nullptr);
michael@0:         CHECK_EQUAL(*reinterpret_cast<uint32_t*>(data), MAGIC_VALUE_2);
michael@0:         CHECK(JS_GetElement(cx, dstview, 0, &v));
michael@0:         CHECK_SAME(v, INT_TO_JSVAL(MAGIC_VALUE_2));
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: END_TEST(testArrayBuffer_bug720949_steal)
michael@0: 
michael@0: // Varying number of views of a buffer, to test the neutering weak pointers
michael@0: BEGIN_TEST(testArrayBuffer_bug720949_viewList)
michael@0: {
michael@0:     JS::RootedObject buffer(cx);
michael@0: 
michael@0:     // No views
michael@0:     buffer = JS_NewArrayBuffer(cx, 2000);
michael@0:     buffer = nullptr;
michael@0:     GC(cx);
michael@0: 
michael@0:     // One view.
michael@0:     {
michael@0:         buffer = JS_NewArrayBuffer(cx, 2000);
michael@0:         JS::RootedObject view(cx, JS_NewUint8ArrayWithBuffer(cx, buffer, 0, -1));
michael@0:         void *contents = JS_StealArrayBufferContents(cx, buffer);
michael@0:         CHECK(contents != nullptr);
michael@0:         JS_free(nullptr, contents);
michael@0:         GC(cx);
michael@0:         CHECK(isNeutered(view));
michael@0:         CHECK(isNeutered(buffer));
michael@0:         view = nullptr;
michael@0:         GC(cx);
michael@0:         buffer = nullptr;
michael@0:         GC(cx);
michael@0:     }
michael@0: 
michael@0:     // Two views
michael@0:     {
michael@0:         buffer = JS_NewArrayBuffer(cx, 2000);
michael@0: 
michael@0:         JS::RootedObject view1(cx, JS_NewUint8ArrayWithBuffer(cx, buffer, 0, -1));
michael@0:         JS::RootedObject view2(cx, JS_NewUint8ArrayWithBuffer(cx, buffer, 1, 200));
michael@0: 
michael@0:         // Remove, re-add a view
michael@0:         view2 = nullptr;
michael@0:         GC(cx);
michael@0:         view2 = JS_NewUint8ArrayWithBuffer(cx, buffer, 1, 200);
michael@0: 
michael@0:         // Neuter
michael@0:         void *contents = JS_StealArrayBufferContents(cx, buffer);
michael@0:         CHECK(contents != nullptr);
michael@0:         JS_free(nullptr, contents);
michael@0: 
michael@0:         CHECK(isNeutered(view1));
michael@0:         CHECK(isNeutered(view2));
michael@0:         CHECK(isNeutered(buffer));
michael@0: 
michael@0:         view1 = nullptr;
michael@0:         GC(cx);
michael@0:         view2 = nullptr;
michael@0:         GC(cx);
michael@0:         buffer = nullptr;
michael@0:         GC(cx);
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: static void GC(JSContext *cx)
michael@0: {
michael@0:     JS_GC(JS_GetRuntime(cx));
michael@0:     JS_GC(JS_GetRuntime(cx)); // Trigger another to wait for background finalization to end
michael@0: }
michael@0: 
michael@0: bool isNeutered(JS::HandleObject obj) {
michael@0:     JS::RootedValue v(cx);
michael@0:     return JS_GetProperty(cx, obj, "byteLength", &v) && v.toInt32() == 0;
michael@0: }
michael@0: 
michael@0: END_TEST(testArrayBuffer_bug720949_viewList)