/* [implicit_jscontext] dpoIData allocateData (in jsval templ, [optional] in uint32_t length); */ NS_IMETHODIMP dpoCContext::AllocateData(const jsval & templ, uint32_t length, JSContext *cx, dpoIData **_retval) { cl_int err_code; nsresult result; JSObject *tArray; size_t bytePerElements; nsCOMPtr<dpoCData> data; result = ExtractArray( templ, &tArray, cx); if (NS_FAILED(result)) { return result; } data = new dpoCData( this); if (data == NULL) { DEBUG_LOG_STATUS("AllocateData", "Cannot create new dpoCData object"); return NS_ERROR_OUT_OF_MEMORY; } if (length == 0) { DEBUG_LOG_STATUS("AllocateData", "size not provided, assuming template's size"); length = JS_GetTypedArrayLength(tArray); } bytePerElements = JS_GetTypedArrayByteLength(tArray) / JS_GetTypedArrayLength(tArray); DEBUG_LOG_STATUS("AllocateData", "length " << length << " bytePerElements " << bytePerElements); #ifdef PREALLOCATE_IN_JS_HEAP JSObject *jsArray; if (NS_FAILED(CreateAlignedTA(JS_GetTypedArrayType(tArray, cx), length, &jsArray, cx))) { return NS_ERROR_NOT_AVAILABLE; } if (!jsArray) { DEBUG_LOG_STATUS("AllocateData", "Cannot create typed array"); return NS_ERROR_OUT_OF_MEMORY; } cl_mem memObj = CreateBuffer( CL_MEM_USE_HOST_PTR | CL_MEM_READ_WRITE, JS_GetTypedArrayByteLength(jsArray, cx), GetPointerFromTA(jsArray, cx), &err_code); #else /* PREALLOCATE_IN_JS_HEAP */ JSObject *jsArray = nullptr; cl_mem memObj = CreateBuffer(cx, CL_MEM_READ_WRITE, length * bytePerElements, NULL, &err_code); #endif /* PREALLOCATE_IN_JS_HEAP */ if (err_code != CL_SUCCESS) { DEBUG_LOG_ERROR("AllocateData", err_code); return NS_ERROR_NOT_AVAILABLE; } result = data->InitCData(cx, cmdQueue, memObj, JS_GetArrayBufferViewType(tArray), length, length * bytePerElements, jsArray); if (NS_SUCCEEDED(result)) { data.forget((dpoCData **) _retval); } return result; }
bool TestViewType(JSContext *cx) { JS::Rooted<JSObject*> obj(cx, CreateViewType(cx)); CHECK(obj); CHECK(JS_IsArrayBufferViewObject(obj)); CHECK(JS_GetArrayBufferViewType(obj) == ExpectedType); CHECK(JS_GetArrayBufferViewByteLength(obj) == ExpectedByteLength); { JS::AutoCheckCannotGC nogc; T *data1 = static_cast<T*>(JS_GetArrayBufferViewData(obj, nogc)); T *data2; uint32_t len; CHECK(obj == GetObjectAs(obj, &len, &data2)); CHECK(data1 == data2); CHECK(len == ExpectedLength); } return true; }
JSBool JSB_jsval_typedarray_to_dataptr( JSContext *cx, jsval vp, GLsizei *count, void **data, JSArrayBufferViewType t) { JSObject *jsobj; JSBool ok = JS_ValueToObject( cx, vp, &jsobj ); JSB_PRECONDITION2( ok && jsobj, cx, JS_FALSE, "Error converting value to object"); // WebGL supports TypedArray and sequences for some of its APIs. So when converting a TypedArray, we should // also check for a possible non-Typed Array JS object, like a JS Array. if( JS_IsTypedArrayObject( jsobj ) ) { *count = JS_GetTypedArrayLength(jsobj); JSArrayBufferViewType type = JS_GetArrayBufferViewType(jsobj); JSB_PRECONDITION2(t==type, cx, JS_FALSE, "TypedArray type different than expected type"); switch (t) { case js::ArrayBufferView::TYPE_INT8: case js::ArrayBufferView::TYPE_UINT8: *data = JS_GetUint8ArrayData(jsobj); break; case js::ArrayBufferView::TYPE_INT16: case js::ArrayBufferView::TYPE_UINT16: *data = JS_GetUint16ArrayData(jsobj); break; case js::ArrayBufferView::TYPE_INT32: case js::ArrayBufferView::TYPE_UINT32: *data = JS_GetUint32ArrayData(jsobj); break; case js::ArrayBufferView::TYPE_FLOAT32: *data = JS_GetFloat32ArrayData(jsobj); break; default: JSB_PRECONDITION2(false, cx, JS_FALSE, "Unsupported typedarray type"); break; } } else if( JS_IsArrayObject(cx, jsobj)) { // Slow... avoid it. Use TypedArray instead, but the spec says that it can receive // Sequence<> as well. uint32_t length; JS_GetArrayLength(cx, jsobj, &length); for( uint32_t i=0; i<length; i++ ) { jsval valarg; JS_GetElement(cx, jsobj, i, &valarg); switch(t) { case js::ArrayBufferView::TYPE_INT32: case js::ArrayBufferView::TYPE_UINT32: { uint32_t e = JSVAL_TO_INT(valarg); ((uint32_t*)data)[i] = e; break; } case js::ArrayBufferView::TYPE_FLOAT32: { double e = JSVAL_TO_DOUBLE(valarg); ((GLfloat*)data)[i] = (GLfloat)e; break; } default: JSB_PRECONDITION2(false, cx, JS_FALSE, "Unsupported typedarray type"); break; } } } else JSB_PRECONDITION2(false, cx, JS_FALSE, "Object shall be a TypedArray or Sequence"); return JS_TRUE; }
/* [implicit_jscontext] dpoIData mapData (in jsval source); */ NS_IMETHODIMP dpoCContext::MapData(const jsval & source, JSContext *cx, dpoIData **_retval) { cl_int err_code; nsresult result; JSObject *tArray; nsCOMPtr<dpoCData> data; result = ExtractArray( source, &tArray, cx); if (NS_SUCCEEDED(result)) { // we have a typed array data = new dpoCData( this); if (data == NULL) { DEBUG_LOG_STATUS("MapData", "Cannot create new dpoCData object"); return NS_ERROR_OUT_OF_MEMORY; } // USE_HOST_PTR is save as the CData object will keep the associated typed array alive as long as the // memory buffer lives cl_mem_flags flags = CL_MEM_READ_ONLY; void *tArrayBuffer = NULL; size_t arrayByteLength = JS_GetTypedArrayByteLength(tArray); if(arrayByteLength == 0) { arrayByteLength = 1; } else { tArrayBuffer = GetPointerFromTA(tArray, cx); flags |= CL_MEM_USE_HOST_PTR; } cl_mem memObj = CreateBuffer(cx, flags, arrayByteLength, tArrayBuffer , &err_code); if (err_code != CL_SUCCESS) { DEBUG_LOG_ERROR("MapData", err_code); return NS_ERROR_NOT_AVAILABLE; } result = data->InitCData(cx, cmdQueue, memObj, JS_GetArrayBufferViewType(tArray), JS_GetTypedArrayLength(tArray), JS_GetTypedArrayByteLength(tArray), tArray); #ifdef SUPPORT_MAPPING_ARRAYS } else if (JSVAL_IS_OBJECT(source)) { // maybe it is a regular array. // // WARNING: We map a pointer to the actual array here. All this works on CPU only // and only of the OpenCL compiler knows what to do! For the current Intel OpenCL SDK // this works but your milage may vary. const jsval *elems = UnsafeDenseArrayElements(cx, JSVAL_TO_OBJECT(source)); if (elems != NULL) { data = new dpoCData( this); if (data == NULL) { DEBUG_LOG_STATUS("MapData", "Cannot create new dpoCData object"); return NS_ERROR_OUT_OF_MEMORY; } cl_mem memObj = CreateBuffer(CL_MEM_COPY_HOST_PTR | CL_MEM_READ_ONLY, sizeof(double *), &elems, &err_code); if (err_code != CL_SUCCESS) { DEBUG_LOG_ERROR("MapData", err_code); return NS_ERROR_NOT_AVAILABLE; } result = data->InitCData(cx, cmdQueue, memObj, 0 /* bogus type */, 1, sizeof(double *), JSVAL_TO_OBJECT(source)); #ifndef DEBUG_OFF } else { DEBUG_LOG_STATUS("MapData", "No elements returned!"); #endif /* DEBUG_OFF */ } #endif /* SUPPORT_MAPPING_ARRAYS */ } if (NS_SUCCEEDED(result)) { data.forget((dpoCData **)_retval); } return result; }
void CBinarySerializerScriptImpl::HandleScriptVal(JS::HandleValue val) { JSContext* cx = m_ScriptInterface.GetContext(); JSAutoRequest rq(cx); switch (JS_TypeOfValue(cx, val)) { case JSTYPE_VOID: { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_VOID); break; } case JSTYPE_NULL: // This type is never actually returned (it's a JS2 feature) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_NULL); break; } case JSTYPE_OBJECT: { if (val.isNull()) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_NULL); break; } JS::RootedObject obj(cx, &val.toObject()); // If we've already serialized this object, just output a reference to it u32 tag = GetScriptBackrefTag(obj); if (tag) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_BACKREF); m_Serializer.NumberU32_Unbounded("tag", tag); break; } // Arrays are special cases of Object if (JS_IsArrayObject(cx, obj)) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_ARRAY); // TODO: probably should have a more efficient storage format // Arrays like [1, 2, ] have an 'undefined' at the end which is part of the // length but seemingly isn't enumerated, so store the length explicitly uint length = 0; if (!JS_GetArrayLength(cx, obj, &length)) throw PSERROR_Serialize_ScriptError("JS_GetArrayLength failed"); m_Serializer.NumberU32_Unbounded("array length", length); } else if (JS_IsTypedArrayObject(obj)) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_TYPED_ARRAY); m_Serializer.NumberU8_Unbounded("array type", GetArrayType(JS_GetArrayBufferViewType(obj))); m_Serializer.NumberU32_Unbounded("byte offset", JS_GetTypedArrayByteOffset(obj)); m_Serializer.NumberU32_Unbounded("length", JS_GetTypedArrayLength(obj)); // Now handle its array buffer // this may be a backref, since ArrayBuffers can be shared by multiple views JS::RootedValue bufferVal(cx, JS::ObjectValue(*JS_GetArrayBufferViewBuffer(cx, obj))); HandleScriptVal(bufferVal); break; } else if (JS_IsArrayBufferObject(obj)) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_ARRAY_BUFFER); #if BYTE_ORDER != LITTLE_ENDIAN #error TODO: need to convert JS ArrayBuffer data to little-endian #endif u32 length = JS_GetArrayBufferByteLength(obj); m_Serializer.NumberU32_Unbounded("buffer length", length); JS::AutoCheckCannotGC nogc; m_Serializer.RawBytes("buffer data", (const u8*)JS_GetArrayBufferData(obj, nogc), length); break; } else { // Find type of object const JSClass* jsclass = JS_GetClass(obj); if (!jsclass) throw PSERROR_Serialize_ScriptError("JS_GetClass failed"); // TODO: Remove this workaround for upstream API breakage when updating SpiderMonkey // See https://bugzilla.mozilla.org/show_bug.cgi?id=1236373 #define JSCLASS_CACHED_PROTO_WIDTH js::JSCLASS_CACHED_PROTO_WIDTH JSProtoKey protokey = JSCLASS_CACHED_PROTO_KEY(jsclass); #undef JSCLASS_CACHED_PROTO_WIDTH if (protokey == JSProto_Object) { // Object class - check for user-defined prototype JS::RootedObject proto(cx); JS_GetPrototype(cx, obj, &proto); if (!proto) throw PSERROR_Serialize_ScriptError("JS_GetPrototype failed"); if (m_SerializablePrototypes->empty() || !IsSerializablePrototype(proto)) { // Standard Object prototype m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT); // TODO: maybe we should throw an error for unrecognized non-Object prototypes? // (requires fixing AI serialization first and excluding component scripts) } else { // User-defined custom prototype m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_PROTOTYPE); const std::wstring prototypeName = GetPrototypeName(proto); m_Serializer.String("proto name", prototypeName, 0, 256); // Does it have custom Serialize function? // if so, we serialize the data it returns, rather than the object's properties directly bool hasCustomSerialize; if (!JS_HasProperty(cx, obj, "Serialize", &hasCustomSerialize)) throw PSERROR_Serialize_ScriptError("JS_HasProperty failed"); if (hasCustomSerialize) { JS::RootedValue serialize(cx); if (!JS_GetProperty(cx, obj, "Serialize", &serialize)) throw PSERROR_Serialize_ScriptError("JS_GetProperty failed"); // If serialize is null, so don't serialize anything more if (!serialize.isNull()) { JS::RootedValue data(cx); if (!m_ScriptInterface.CallFunction(val, "Serialize", &data)) throw PSERROR_Serialize_ScriptError("Prototype Serialize function failed"); HandleScriptVal(data); } break; } } } else if (protokey == JSProto_Number) { // Standard Number object m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_NUMBER); // Get primitive value double d; if (!JS::ToNumber(cx, val, &d)) throw PSERROR_Serialize_ScriptError("JS::ToNumber failed"); m_Serializer.NumberDouble_Unbounded("value", d); break; } else if (protokey == JSProto_String) { // Standard String object m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_STRING); // Get primitive value JS::RootedString str(cx, JS::ToString(cx, val)); if (!str) throw PSERROR_Serialize_ScriptError("JS_ValueToString failed"); ScriptString("value", str); break; } else if (protokey == JSProto_Boolean) { // Standard Boolean object m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_BOOLEAN); // Get primitive value bool b = JS::ToBoolean(val); m_Serializer.Bool("value", b); break; } // TODO: Follow upstream progresses about a JS::IsMapObject // https://bugzilla.mozilla.org/show_bug.cgi?id=1285909 else if (protokey == JSProto_Map) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_MAP); m_Serializer.NumberU32_Unbounded("map size", JS::MapSize(cx, obj)); JS::RootedValue keyValueIterator(cx); if (!JS::MapEntries(cx, obj, &keyValueIterator)) throw PSERROR_Serialize_ScriptError("JS::MapEntries failed"); JS::ForOfIterator it(cx); if (!it.init(keyValueIterator)) throw PSERROR_Serialize_ScriptError("JS::ForOfIterator::init failed"); JS::RootedValue keyValuePair(cx); bool done; while (true) { if (!it.next(&keyValuePair, &done)) throw PSERROR_Serialize_ScriptError("JS::ForOfIterator::next failed"); if (done) break; JS::RootedObject keyValuePairObj(cx, &keyValuePair.toObject()); JS::RootedValue key(cx); JS::RootedValue value(cx); ENSURE(JS_GetElement(cx, keyValuePairObj, 0, &key)); ENSURE(JS_GetElement(cx, keyValuePairObj, 1, &value)); HandleScriptVal(key); HandleScriptVal(value); } break; } // TODO: Follow upstream progresses about a JS::IsSetObject // https://bugzilla.mozilla.org/show_bug.cgi?id=1285909 else if (protokey == JSProto_Set) { // TODO: When updating SpiderMonkey to a release after 38 use the C++ API for Sets. // https://bugzilla.mozilla.org/show_bug.cgi?id=1159469 u32 setSize; m_ScriptInterface.GetProperty(val, "size", setSize); m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_OBJECT_SET); m_Serializer.NumberU32_Unbounded("set size", setSize); JS::RootedValue valueIterator(cx); m_ScriptInterface.CallFunction(val, "values", &valueIterator); for (u32 i=0; i<setSize; ++i) { JS::RootedValue currentIterator(cx); JS::RootedValue value(cx); ENSURE(m_ScriptInterface.CallFunction(valueIterator, "next", ¤tIterator)); m_ScriptInterface.GetProperty(currentIterator, "value", &value); HandleScriptVal(value); } break; } else { // Unrecognized class LOGERROR("Cannot serialise JS objects with unrecognized class '%s'", jsclass->name); throw PSERROR_Serialize_InvalidScriptValue(); } } // Find all properties (ordered by insertion time) JS::AutoIdArray ida (cx, JS_Enumerate(cx, obj)); if (!ida) throw PSERROR_Serialize_ScriptError("JS_Enumerate failed"); m_Serializer.NumberU32_Unbounded("num props", (u32)ida.length()); for (size_t i = 0; i < ida.length(); ++i) { JS::RootedId id(cx, ida[i]); JS::RootedValue idval(cx); JS::RootedValue propval(cx); // Forbid getters, which might delete values and mess things up. JS::Rooted<JSPropertyDescriptor> desc(cx); if (!JS_GetPropertyDescriptorById(cx, obj, id, &desc)) throw PSERROR_Serialize_ScriptError("JS_GetPropertyDescriptorById failed"); if (desc.hasGetterObject()) throw PSERROR_Serialize_ScriptError("Cannot serialize property getters"); // Get the property name as a string if (!JS_IdToValue(cx, id, &idval)) throw PSERROR_Serialize_ScriptError("JS_IdToValue failed"); JS::RootedString idstr(cx, JS::ToString(cx, idval)); if (!idstr) throw PSERROR_Serialize_ScriptError("JS_ValueToString failed"); ScriptString("prop name", idstr); if (!JS_GetPropertyById(cx, obj, id, &propval)) throw PSERROR_Serialize_ScriptError("JS_GetPropertyById failed"); HandleScriptVal(propval); } break; } case JSTYPE_FUNCTION: { // We can't serialise functions, but we can at least name the offender (hopefully) std::wstring funcname(L"(unnamed)"); JS::RootedFunction func(cx, JS_ValueToFunction(cx, val)); if (func) { JS::RootedString string(cx, JS_GetFunctionId(func)); if (string) { if (JS_StringHasLatin1Chars(string)) { size_t length; JS::AutoCheckCannotGC nogc; const JS::Latin1Char* ch = JS_GetLatin1StringCharsAndLength(cx, nogc, string, &length); if (ch && length > 0) funcname.assign(ch, ch + length); } else { size_t length; JS::AutoCheckCannotGC nogc; const char16_t* ch = JS_GetTwoByteStringCharsAndLength(cx, nogc, string, &length); if (ch && length > 0) funcname.assign(ch, ch + length); } } } LOGERROR("Cannot serialise JS objects of type 'function': %s", utf8_from_wstring(funcname)); throw PSERROR_Serialize_InvalidScriptValue(); } case JSTYPE_STRING: { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_STRING); JS::RootedString stringVal(cx, val.toString()); ScriptString("string", stringVal); break; } case JSTYPE_NUMBER: { // To reduce the size of the serialized data, we handle integers and doubles separately. // We can't check for val.isInt32 and val.isDouble directly, because integer numbers are not guaranteed // to be represented as integers. A number like 33 could be stored as integer on the computer of one player // and as double on the other player's computer. That would cause out of sync errors in multiplayer games because // their binary representation and thus the hash would be different. double d; d = val.toNumber(); i32 integer; if (JS_DoubleIsInt32(d, &integer)) { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_INT); m_Serializer.NumberI32_Unbounded("value", integer); } else { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_DOUBLE); m_Serializer.NumberDouble_Unbounded("value", d); } break; } case JSTYPE_BOOLEAN: { m_Serializer.NumberU8_Unbounded("type", SCRIPT_TYPE_BOOLEAN); bool b = val.toBoolean(); m_Serializer.NumberU8_Unbounded("value", b ? 1 : 0); break; } default: { debug_warn(L"Invalid TypeOfValue"); throw PSERROR_Serialize_InvalidScriptValue(); } } }