Revert "Remove d8 implementation of ArrayBuffer and typed arrays."
This reverts commit r14706. That commit had a stale change from another change list. git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
dslomov@chromium.org
parent
0b4c7c8de9
commit
8bb85af38d
660
src/d8.cc
660
src/d8.cc
@ -89,15 +89,38 @@ static Handle<Value> Throw(const char* message) {
|
||||
}
|
||||
|
||||
|
||||
// TODO(rossberg): should replace these by proper uses of HasInstance,
|
||||
// once we figure out a good way to make the templates global.
|
||||
const char kArrayBufferMarkerPropName[] = "d8::_is_array_buffer_";
|
||||
const char kArrayMarkerPropName[] = "d8::_is_typed_array_";
|
||||
|
||||
|
||||
#define FOR_EACH_STRING(V) \
|
||||
V(ArrayBuffer, "ArrayBuffer") \
|
||||
V(ArrayBufferMarkerPropName, kArrayBufferMarkerPropName) \
|
||||
V(ArrayMarkerPropName, kArrayMarkerPropName) \
|
||||
V(buffer, "buffer") \
|
||||
V(byteLength, "byteLength") \
|
||||
V(byteOffset, "byteOffset") \
|
||||
V(BYTES_PER_ELEMENT, "BYTES_PER_ELEMENT") \
|
||||
V(length, "length")
|
||||
|
||||
|
||||
class PerIsolateData {
|
||||
public:
|
||||
explicit PerIsolateData(Isolate* isolate) : isolate_(isolate), realms_(NULL) {
|
||||
HandleScope scope(isolate);
|
||||
#define INIT_STRING(name, value) \
|
||||
name##_string_ = Persistent<String>::New(isolate, String::NewSymbol(value));
|
||||
FOR_EACH_STRING(INIT_STRING)
|
||||
#undef INIT_STRING
|
||||
isolate->SetData(this);
|
||||
}
|
||||
|
||||
~PerIsolateData() {
|
||||
#define DISPOSE_STRING(name, value) name##_string_.Dispose(isolate_);
|
||||
FOR_EACH_STRING(DISPOSE_STRING)
|
||||
#undef DISPOSE_STRING
|
||||
isolate_->SetData(NULL); // Not really needed, just to be sure...
|
||||
}
|
||||
|
||||
@ -105,6 +128,13 @@ class PerIsolateData {
|
||||
return reinterpret_cast<PerIsolateData*>(isolate->GetData());
|
||||
}
|
||||
|
||||
#define DEFINE_STRING_GETTER(name, value) \
|
||||
static Handle<String> name##_string(Isolate* isolate) { \
|
||||
return Handle<String>(*Get(isolate)->name##_string_); \
|
||||
}
|
||||
FOR_EACH_STRING(DEFINE_STRING_GETTER)
|
||||
#undef DEFINE_STRING_GETTER
|
||||
|
||||
class RealmScope {
|
||||
public:
|
||||
explicit RealmScope(PerIsolateData* data);
|
||||
@ -123,6 +153,10 @@ class PerIsolateData {
|
||||
Persistent<Context>* realms_;
|
||||
Persistent<Value> realm_shared_;
|
||||
|
||||
#define DEFINE_MEMBER(name, value) Persistent<String> name##_string_;
|
||||
FOR_EACH_STRING(DEFINE_MEMBER)
|
||||
#undef DEFINE_MEMBER
|
||||
|
||||
int RealmFind(Handle<Context> context);
|
||||
};
|
||||
|
||||
@ -527,6 +561,565 @@ Handle<Value> Shell::Load(const Arguments& args) {
|
||||
return Undefined(args.GetIsolate());
|
||||
}
|
||||
|
||||
static int32_t convertToInt(Local<Value> value_in, TryCatch* try_catch) {
|
||||
if (value_in->IsInt32()) {
|
||||
return value_in->Int32Value();
|
||||
}
|
||||
|
||||
Local<Value> number = value_in->ToNumber();
|
||||
if (try_catch->HasCaught()) return 0;
|
||||
|
||||
ASSERT(number->IsNumber());
|
||||
Local<Int32> int32 = number->ToInt32();
|
||||
if (try_catch->HasCaught() || int32.IsEmpty()) return 0;
|
||||
|
||||
int32_t value = int32->Int32Value();
|
||||
if (try_catch->HasCaught()) return 0;
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
|
||||
static int32_t convertToUint(Local<Value> value_in, TryCatch* try_catch) {
|
||||
int32_t raw_value = convertToInt(value_in, try_catch);
|
||||
if (try_catch->HasCaught()) return 0;
|
||||
|
||||
if (raw_value < 0) {
|
||||
Throw("Array length must not be negative.");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const int kMaxLength = 0x3fffffff;
|
||||
#ifndef V8_SHARED
|
||||
ASSERT(kMaxLength == i::ExternalArray::kMaxLength);
|
||||
#endif // V8_SHARED
|
||||
if (raw_value > static_cast<int32_t>(kMaxLength)) {
|
||||
Throw("Array length exceeds maximum length.");
|
||||
}
|
||||
return raw_value;
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::CreateExternalArrayBuffer(Isolate* isolate,
|
||||
Handle<Object> buffer,
|
||||
int32_t length) {
|
||||
static const int32_t kMaxSize = 0x7fffffff;
|
||||
// Make sure the total size fits into a (signed) int.
|
||||
if (length < 0 || length > kMaxSize) {
|
||||
return Throw("ArrayBuffer exceeds maximum size (2G)");
|
||||
}
|
||||
uint8_t* data = new uint8_t[length];
|
||||
if (data == NULL) {
|
||||
return Throw("Memory allocation failed");
|
||||
}
|
||||
memset(data, 0, length);
|
||||
|
||||
buffer->SetHiddenValue(
|
||||
PerIsolateData::ArrayBufferMarkerPropName_string(isolate), True());
|
||||
Persistent<Object> persistent_array =
|
||||
Persistent<Object>::New(isolate, buffer);
|
||||
persistent_array.MakeWeak(isolate, data, ExternalArrayWeakCallback);
|
||||
persistent_array.MarkIndependent(isolate);
|
||||
isolate->AdjustAmountOfExternalAllocatedMemory(length);
|
||||
|
||||
buffer->SetIndexedPropertiesToExternalArrayData(
|
||||
data, v8::kExternalByteArray, length);
|
||||
buffer->Set(PerIsolateData::byteLength_string(isolate),
|
||||
Int32::New(length, isolate),
|
||||
ReadOnly);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::ArrayBuffer(const Arguments& args) {
|
||||
if (!args.IsConstructCall()) {
|
||||
Handle<Value>* rec_args = new Handle<Value>[args.Length()];
|
||||
for (int i = 0; i < args.Length(); ++i) rec_args[i] = args[i];
|
||||
Handle<Value> result = args.Callee()->NewInstance(args.Length(), rec_args);
|
||||
delete[] rec_args;
|
||||
return result;
|
||||
}
|
||||
|
||||
if (args.Length() == 0) {
|
||||
return Throw("ArrayBuffer constructor must have one argument");
|
||||
}
|
||||
TryCatch try_catch;
|
||||
int32_t length = convertToUint(args[0], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
return CreateExternalArrayBuffer(args.GetIsolate(), args.This(), length);
|
||||
}
|
||||
|
||||
|
||||
Handle<Object> Shell::CreateExternalArray(Isolate* isolate,
|
||||
Handle<Object> array,
|
||||
Handle<Object> buffer,
|
||||
ExternalArrayType type,
|
||||
int32_t length,
|
||||
int32_t byteLength,
|
||||
int32_t byteOffset,
|
||||
int32_t element_size) {
|
||||
ASSERT(element_size == 1 || element_size == 2 ||
|
||||
element_size == 4 || element_size == 8);
|
||||
ASSERT(byteLength == length * element_size);
|
||||
|
||||
void* data = buffer->GetIndexedPropertiesExternalArrayData();
|
||||
ASSERT(data != NULL);
|
||||
|
||||
array->SetIndexedPropertiesToExternalArrayData(
|
||||
static_cast<uint8_t*>(data) + byteOffset, type, length);
|
||||
array->SetHiddenValue(PerIsolateData::ArrayMarkerPropName_string(isolate),
|
||||
Int32::New(type, isolate));
|
||||
array->Set(PerIsolateData::byteLength_string(isolate),
|
||||
Int32::New(byteLength, isolate),
|
||||
ReadOnly);
|
||||
array->Set(PerIsolateData::byteOffset_string(isolate),
|
||||
Int32::New(byteOffset, isolate),
|
||||
ReadOnly);
|
||||
array->Set(PerIsolateData::length_string(isolate),
|
||||
Int32::New(length, isolate),
|
||||
ReadOnly);
|
||||
array->Set(PerIsolateData::BYTES_PER_ELEMENT_string(isolate),
|
||||
Int32::New(element_size, isolate));
|
||||
array->Set(PerIsolateData::buffer_string(isolate),
|
||||
buffer,
|
||||
ReadOnly);
|
||||
|
||||
return array;
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::CreateExternalArray(const Arguments& args,
|
||||
ExternalArrayType type,
|
||||
int32_t element_size) {
|
||||
Isolate* isolate = args.GetIsolate();
|
||||
if (!args.IsConstructCall()) {
|
||||
Handle<Value>* rec_args = new Handle<Value>[args.Length()];
|
||||
for (int i = 0; i < args.Length(); ++i) rec_args[i] = args[i];
|
||||
Handle<Value> result = args.Callee()->NewInstance(args.Length(), rec_args);
|
||||
delete[] rec_args;
|
||||
return result;
|
||||
}
|
||||
|
||||
TryCatch try_catch;
|
||||
ASSERT(element_size == 1 || element_size == 2 ||
|
||||
element_size == 4 || element_size == 8);
|
||||
|
||||
// All of the following constructors are supported:
|
||||
// TypedArray(unsigned long length)
|
||||
// TypedArray(type[] array)
|
||||
// TypedArray(TypedArray array)
|
||||
// TypedArray(ArrayBuffer buffer,
|
||||
// optional unsigned long byteOffset,
|
||||
// optional unsigned long length)
|
||||
Handle<Object> buffer;
|
||||
int32_t length;
|
||||
int32_t byteLength;
|
||||
int32_t byteOffset;
|
||||
bool init_from_array = false;
|
||||
if (args.Length() == 0) {
|
||||
return Throw("Array constructor must have at least one argument");
|
||||
}
|
||||
if (args[0]->IsObject() &&
|
||||
!args[0]->ToObject()->GetHiddenValue(
|
||||
PerIsolateData::ArrayBufferMarkerPropName_string(isolate)).IsEmpty()) {
|
||||
// Construct from ArrayBuffer.
|
||||
buffer = args[0]->ToObject();
|
||||
int32_t bufferLength = convertToUint(
|
||||
buffer->Get(PerIsolateData::byteLength_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
if (args.Length() < 2 || args[1]->IsUndefined()) {
|
||||
byteOffset = 0;
|
||||
} else {
|
||||
byteOffset = convertToUint(args[1], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
if (byteOffset > bufferLength) {
|
||||
return Throw("byteOffset out of bounds");
|
||||
}
|
||||
if (byteOffset % element_size != 0) {
|
||||
return Throw("byteOffset must be multiple of element size");
|
||||
}
|
||||
}
|
||||
|
||||
if (args.Length() < 3 || args[2]->IsUndefined()) {
|
||||
byteLength = bufferLength - byteOffset;
|
||||
length = byteLength / element_size;
|
||||
if (byteLength % element_size != 0) {
|
||||
return Throw("buffer size must be multiple of element size");
|
||||
}
|
||||
} else {
|
||||
length = convertToUint(args[2], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
byteLength = length * element_size;
|
||||
if (byteOffset + byteLength > bufferLength) {
|
||||
return Throw("length out of bounds");
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (args[0]->IsObject() &&
|
||||
args[0]->ToObject()->Has(PerIsolateData::length_string(isolate))) {
|
||||
// Construct from array.
|
||||
Local<Value> value =
|
||||
args[0]->ToObject()->Get(PerIsolateData::length_string(isolate));
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
length = convertToUint(value, &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
init_from_array = true;
|
||||
} else {
|
||||
// Construct from size.
|
||||
length = convertToUint(args[0], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
}
|
||||
byteLength = length * element_size;
|
||||
byteOffset = 0;
|
||||
|
||||
Handle<Object> global = Context::GetCurrent()->Global();
|
||||
Handle<Value> array_buffer =
|
||||
global->Get(PerIsolateData::ArrayBuffer_string(isolate));
|
||||
ASSERT(!try_catch.HasCaught() && array_buffer->IsFunction());
|
||||
Handle<Value> buffer_args[] = { Uint32::New(byteLength, isolate) };
|
||||
Handle<Value> result = Handle<Function>::Cast(array_buffer)->NewInstance(
|
||||
1, buffer_args);
|
||||
if (try_catch.HasCaught()) return result;
|
||||
buffer = result->ToObject();
|
||||
}
|
||||
|
||||
Handle<Object> array =
|
||||
CreateExternalArray(isolate, args.This(), buffer, type, length,
|
||||
byteLength, byteOffset, element_size);
|
||||
|
||||
if (init_from_array) {
|
||||
Handle<Object> init = args[0]->ToObject();
|
||||
for (int i = 0; i < length; ++i) {
|
||||
Local<Value> value = init->Get(i);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
array->Set(i, value);
|
||||
}
|
||||
}
|
||||
|
||||
return array;
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::ArrayBufferSlice(const Arguments& args) {
|
||||
TryCatch try_catch;
|
||||
|
||||
if (!args.This()->IsObject()) {
|
||||
return Throw("'slice' invoked on non-object receiver");
|
||||
}
|
||||
|
||||
Isolate* isolate = args.GetIsolate();
|
||||
Local<Object> self = args.This();
|
||||
Local<Value> marker = self->GetHiddenValue(
|
||||
PerIsolateData::ArrayBufferMarkerPropName_string(isolate));
|
||||
if (marker.IsEmpty()) {
|
||||
return Throw("'slice' invoked on wrong receiver type");
|
||||
}
|
||||
|
||||
int32_t length = convertToUint(
|
||||
self->Get(PerIsolateData::byteLength_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
if (args.Length() == 0) {
|
||||
return Throw("'slice' must have at least one argument");
|
||||
}
|
||||
int32_t begin = convertToInt(args[0], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
if (begin < 0) begin += length;
|
||||
if (begin < 0) begin = 0;
|
||||
if (begin > length) begin = length;
|
||||
|
||||
int32_t end;
|
||||
if (args.Length() < 2 || args[1]->IsUndefined()) {
|
||||
end = length;
|
||||
} else {
|
||||
end = convertToInt(args[1], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
if (end < 0) end += length;
|
||||
if (end < 0) end = 0;
|
||||
if (end > length) end = length;
|
||||
if (end < begin) end = begin;
|
||||
}
|
||||
|
||||
Local<Function> constructor = Local<Function>::Cast(self->GetConstructor());
|
||||
Handle<Value> new_args[] = { Uint32::New(end - begin, isolate) };
|
||||
Handle<Value> result = constructor->NewInstance(1, new_args);
|
||||
if (try_catch.HasCaught()) return result;
|
||||
Handle<Object> buffer = result->ToObject();
|
||||
uint8_t* dest =
|
||||
static_cast<uint8_t*>(buffer->GetIndexedPropertiesExternalArrayData());
|
||||
uint8_t* src = begin + static_cast<uint8_t*>(
|
||||
self->GetIndexedPropertiesExternalArrayData());
|
||||
memcpy(dest, src, end - begin);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::ArraySubArray(const Arguments& args) {
|
||||
TryCatch try_catch;
|
||||
|
||||
if (!args.This()->IsObject()) {
|
||||
return Throw("'subarray' invoked on non-object receiver");
|
||||
}
|
||||
|
||||
Isolate* isolate = args.GetIsolate();
|
||||
Local<Object> self = args.This();
|
||||
Local<Value> marker =
|
||||
self->GetHiddenValue(PerIsolateData::ArrayMarkerPropName_string(isolate));
|
||||
if (marker.IsEmpty()) {
|
||||
return Throw("'subarray' invoked on wrong receiver type");
|
||||
}
|
||||
|
||||
Handle<Object> buffer =
|
||||
self->Get(PerIsolateData::buffer_string(isolate))->ToObject();
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t length = convertToUint(
|
||||
self->Get(PerIsolateData::length_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t byteOffset = convertToUint(
|
||||
self->Get(PerIsolateData::byteOffset_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t element_size = convertToUint(
|
||||
self->Get(PerIsolateData::BYTES_PER_ELEMENT_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
if (args.Length() == 0) {
|
||||
return Throw("'subarray' must have at least one argument");
|
||||
}
|
||||
int32_t begin = convertToInt(args[0], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
if (begin < 0) begin += length;
|
||||
if (begin < 0) begin = 0;
|
||||
if (begin > length) begin = length;
|
||||
|
||||
int32_t end;
|
||||
if (args.Length() < 2 || args[1]->IsUndefined()) {
|
||||
end = length;
|
||||
} else {
|
||||
end = convertToInt(args[1], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
if (end < 0) end += length;
|
||||
if (end < 0) end = 0;
|
||||
if (end > length) end = length;
|
||||
if (end < begin) end = begin;
|
||||
}
|
||||
|
||||
length = end - begin;
|
||||
byteOffset += begin * element_size;
|
||||
|
||||
Local<Function> constructor = Local<Function>::Cast(self->GetConstructor());
|
||||
Handle<Value> construct_args[] = {
|
||||
buffer, Uint32::New(byteOffset, isolate), Uint32::New(length, isolate)
|
||||
};
|
||||
return constructor->NewInstance(3, construct_args);
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::ArraySet(const Arguments& args) {
|
||||
TryCatch try_catch;
|
||||
|
||||
if (!args.This()->IsObject()) {
|
||||
return Throw("'set' invoked on non-object receiver");
|
||||
}
|
||||
|
||||
Isolate* isolate = args.GetIsolate();
|
||||
Local<Object> self = args.This();
|
||||
Local<Value> marker =
|
||||
self->GetHiddenValue(PerIsolateData::ArrayMarkerPropName_string(isolate));
|
||||
if (marker.IsEmpty()) {
|
||||
return Throw("'set' invoked on wrong receiver type");
|
||||
}
|
||||
int32_t length = convertToUint(
|
||||
self->Get(PerIsolateData::length_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t element_size = convertToUint(
|
||||
self->Get(PerIsolateData::BYTES_PER_ELEMENT_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
if (args.Length() == 0) {
|
||||
return Throw("'set' must have at least one argument");
|
||||
}
|
||||
if (!args[0]->IsObject() ||
|
||||
!args[0]->ToObject()->Has(PerIsolateData::length_string(isolate))) {
|
||||
return Throw("'set' invoked with non-array argument");
|
||||
}
|
||||
Handle<Object> source = args[0]->ToObject();
|
||||
int32_t source_length = convertToUint(
|
||||
source->Get(PerIsolateData::length_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
int32_t offset;
|
||||
if (args.Length() < 2 || args[1]->IsUndefined()) {
|
||||
offset = 0;
|
||||
} else {
|
||||
offset = convertToUint(args[1], &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
}
|
||||
if (offset + source_length > length) {
|
||||
return Throw("offset or source length out of bounds");
|
||||
}
|
||||
|
||||
int32_t source_element_size;
|
||||
if (source->GetHiddenValue(
|
||||
PerIsolateData::ArrayMarkerPropName_string(isolate)).IsEmpty()) {
|
||||
source_element_size = 0;
|
||||
} else {
|
||||
source_element_size = convertToUint(
|
||||
source->Get(PerIsolateData::BYTES_PER_ELEMENT_string(isolate)),
|
||||
&try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
}
|
||||
|
||||
if (element_size == source_element_size &&
|
||||
self->GetConstructor()->StrictEquals(source->GetConstructor())) {
|
||||
// Use memmove on the array buffers.
|
||||
Handle<Object> buffer =
|
||||
self->Get(PerIsolateData::buffer_string(isolate))->ToObject();
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
Handle<Object> source_buffer =
|
||||
source->Get(PerIsolateData::buffer_string(isolate))->ToObject();
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t byteOffset = convertToUint(
|
||||
self->Get(PerIsolateData::byteOffset_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t source_byteOffset = convertToUint(
|
||||
source->Get(PerIsolateData::byteOffset_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
uint8_t* dest = byteOffset + offset * element_size + static_cast<uint8_t*>(
|
||||
buffer->GetIndexedPropertiesExternalArrayData());
|
||||
uint8_t* src = source_byteOffset + static_cast<uint8_t*>(
|
||||
source_buffer->GetIndexedPropertiesExternalArrayData());
|
||||
memmove(dest, src, source_length * element_size);
|
||||
} else if (source_element_size == 0) {
|
||||
// Source is not a typed array, copy element-wise sequentially.
|
||||
for (int i = 0; i < source_length; ++i) {
|
||||
self->Set(offset + i, source->Get(i));
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
}
|
||||
} else {
|
||||
// Need to copy element-wise to make the right conversions.
|
||||
Handle<Object> buffer =
|
||||
self->Get(PerIsolateData::buffer_string(isolate))->ToObject();
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
Handle<Object> source_buffer =
|
||||
source->Get(PerIsolateData::buffer_string(isolate))->ToObject();
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
if (buffer->StrictEquals(source_buffer)) {
|
||||
// Same backing store, need to handle overlap correctly.
|
||||
// This gets a bit tricky in the case of different element sizes
|
||||
// (which, of course, is extremely unlikely to ever occur in practice).
|
||||
int32_t byteOffset = convertToUint(
|
||||
self->Get(PerIsolateData::byteOffset_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
int32_t source_byteOffset = convertToUint(
|
||||
source->Get(PerIsolateData::byteOffset_string(isolate)), &try_catch);
|
||||
if (try_catch.HasCaught()) return try_catch.ReThrow();
|
||||
|
||||
// Copy as much as we can from left to right.
|
||||
int i = 0;
|
||||
int32_t next_dest_offset = byteOffset + (offset + 1) * element_size;
|
||||
int32_t next_src_offset = source_byteOffset + source_element_size;
|
||||
while (i < length && next_dest_offset <= next_src_offset) {
|
||||
self->Set(offset + i, source->Get(i));
|
||||
++i;
|
||||
next_dest_offset += element_size;
|
||||
next_src_offset += source_element_size;
|
||||
}
|
||||
// Of what's left, copy as much as we can from right to left.
|
||||
int j = length - 1;
|
||||
int32_t dest_offset = byteOffset + (offset + j) * element_size;
|
||||
int32_t src_offset = source_byteOffset + j * source_element_size;
|
||||
while (j >= i && dest_offset >= src_offset) {
|
||||
self->Set(offset + j, source->Get(j));
|
||||
--j;
|
||||
dest_offset -= element_size;
|
||||
src_offset -= source_element_size;
|
||||
}
|
||||
// There can be at most 8 entries left in the middle that need buffering
|
||||
// (because the largest element_size is 8 times the smallest).
|
||||
ASSERT(j+1 - i <= 8);
|
||||
Handle<Value> temp[8];
|
||||
for (int k = i; k <= j; ++k) {
|
||||
temp[k - i] = source->Get(k);
|
||||
}
|
||||
for (int k = i; k <= j; ++k) {
|
||||
self->Set(offset + k, temp[k - i]);
|
||||
}
|
||||
} else {
|
||||
// Different backing stores, safe to copy element-wise sequentially.
|
||||
for (int i = 0; i < source_length; ++i)
|
||||
self->Set(offset + i, source->Get(i));
|
||||
}
|
||||
}
|
||||
|
||||
return Undefined(args.GetIsolate());
|
||||
}
|
||||
|
||||
|
||||
void Shell::ExternalArrayWeakCallback(v8::Isolate* isolate,
|
||||
Persistent<Object>* object,
|
||||
uint8_t* data) {
|
||||
HandleScope scope(isolate);
|
||||
int32_t length = (*object)->Get(
|
||||
PerIsolateData::byteLength_string(isolate))->Uint32Value();
|
||||
isolate->AdjustAmountOfExternalAllocatedMemory(-length);
|
||||
delete[] data;
|
||||
object->Dispose(isolate);
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Int8Array(const Arguments& args) {
|
||||
return CreateExternalArray(args, v8::kExternalByteArray, sizeof(int8_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Uint8Array(const Arguments& args) {
|
||||
return CreateExternalArray(args, kExternalUnsignedByteArray, sizeof(uint8_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Int16Array(const Arguments& args) {
|
||||
return CreateExternalArray(args, kExternalShortArray, sizeof(int16_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Uint16Array(const Arguments& args) {
|
||||
return CreateExternalArray(
|
||||
args, kExternalUnsignedShortArray, sizeof(uint16_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Int32Array(const Arguments& args) {
|
||||
return CreateExternalArray(args, kExternalIntArray, sizeof(int32_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Uint32Array(const Arguments& args) {
|
||||
return CreateExternalArray(args, kExternalUnsignedIntArray, sizeof(uint32_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Float32Array(const Arguments& args) {
|
||||
return CreateExternalArray(
|
||||
args, kExternalFloatArray, sizeof(float)); // NOLINT
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Float64Array(const Arguments& args) {
|
||||
return CreateExternalArray(
|
||||
args, kExternalDoubleArray, sizeof(double)); // NOLINT
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Uint8ClampedArray(const Arguments& args) {
|
||||
return CreateExternalArray(args, kExternalPixelArray, sizeof(uint8_t));
|
||||
}
|
||||
|
||||
|
||||
Handle<Value> Shell::Quit(const Arguments& args) {
|
||||
int exit_code = args[0]->Int32Value();
|
||||
@ -819,6 +1412,26 @@ class BZip2Decompressor : public v8::StartupDataDecompressor {
|
||||
#endif
|
||||
|
||||
|
||||
Handle<FunctionTemplate> Shell::CreateArrayBufferTemplate(
|
||||
InvocationCallback fun) {
|
||||
Handle<FunctionTemplate> buffer_template = FunctionTemplate::New(fun);
|
||||
Local<Template> proto_template = buffer_template->PrototypeTemplate();
|
||||
proto_template->Set(String::New("slice"),
|
||||
FunctionTemplate::New(ArrayBufferSlice));
|
||||
return buffer_template;
|
||||
}
|
||||
|
||||
|
||||
Handle<FunctionTemplate> Shell::CreateArrayTemplate(InvocationCallback fun) {
|
||||
Handle<FunctionTemplate> array_template = FunctionTemplate::New(fun);
|
||||
Local<Template> proto_template = array_template->PrototypeTemplate();
|
||||
proto_template->Set(String::New("set"), FunctionTemplate::New(ArraySet));
|
||||
proto_template->Set(String::New("subarray"),
|
||||
FunctionTemplate::New(ArraySubArray));
|
||||
return array_template;
|
||||
}
|
||||
|
||||
|
||||
Handle<ObjectTemplate> Shell::CreateGlobalTemplate(Isolate* isolate) {
|
||||
Handle<ObjectTemplate> global_template = ObjectTemplate::New();
|
||||
global_template->Set(String::New("print"), FunctionTemplate::New(Print));
|
||||
@ -856,6 +1469,36 @@ Handle<ObjectTemplate> Shell::CreateGlobalTemplate(Isolate* isolate) {
|
||||
RealmSharedGet, RealmSharedSet);
|
||||
global_template->Set(String::New("Realm"), realm_template);
|
||||
|
||||
// Bind the handlers for external arrays.
|
||||
#ifndef V8_SHARED
|
||||
if (!i::FLAG_harmony_typed_arrays) {
|
||||
#endif // V8_SHARED
|
||||
PropertyAttribute attr =
|
||||
static_cast<PropertyAttribute>(ReadOnly | DontDelete);
|
||||
global_template->Set(PerIsolateData::ArrayBuffer_string(isolate),
|
||||
CreateArrayBufferTemplate(ArrayBuffer), attr);
|
||||
global_template->Set(String::New("Int8Array"),
|
||||
CreateArrayTemplate(Int8Array), attr);
|
||||
global_template->Set(String::New("Uint8Array"),
|
||||
CreateArrayTemplate(Uint8Array), attr);
|
||||
global_template->Set(String::New("Int16Array"),
|
||||
CreateArrayTemplate(Int16Array), attr);
|
||||
global_template->Set(String::New("Uint16Array"),
|
||||
CreateArrayTemplate(Uint16Array), attr);
|
||||
global_template->Set(String::New("Int32Array"),
|
||||
CreateArrayTemplate(Int32Array), attr);
|
||||
global_template->Set(String::New("Uint32Array"),
|
||||
CreateArrayTemplate(Uint32Array), attr);
|
||||
global_template->Set(String::New("Float32Array"),
|
||||
CreateArrayTemplate(Float32Array), attr);
|
||||
global_template->Set(String::New("Float64Array"),
|
||||
CreateArrayTemplate(Float64Array), attr);
|
||||
global_template->Set(String::New("Uint8ClampedArray"),
|
||||
CreateArrayTemplate(Uint8ClampedArray), attr);
|
||||
#ifndef V8_SHARED
|
||||
}
|
||||
#endif // V8_SHARED
|
||||
|
||||
#if !defined(V8_SHARED) && !defined(_WIN32) && !defined(_WIN64)
|
||||
Handle<ObjectTemplate> os_templ = ObjectTemplate::New();
|
||||
AddOSMethods(os_templ);
|
||||
@ -1062,9 +1705,20 @@ Handle<Value> Shell::ReadBuffer(const Arguments& args) {
|
||||
if (data == NULL) {
|
||||
return Throw("Error reading file");
|
||||
}
|
||||
Handle<v8::ArrayBuffer> buffer = ArrayBuffer::New(length);
|
||||
memcpy(buffer->Data(), data, length);
|
||||
delete[] data;
|
||||
Isolate* isolate = args.GetIsolate();
|
||||
Handle<Object> buffer = Object::New();
|
||||
buffer->SetHiddenValue(
|
||||
PerIsolateData::ArrayBufferMarkerPropName_string(isolate), True());
|
||||
Persistent<Object> persistent_buffer =
|
||||
Persistent<Object>::New(isolate, buffer);
|
||||
persistent_buffer.MakeWeak(isolate, data, ExternalArrayWeakCallback);
|
||||
persistent_buffer.MarkIndependent(isolate);
|
||||
isolate->AdjustAmountOfExternalAllocatedMemory(length);
|
||||
|
||||
buffer->SetIndexedPropertiesToExternalArrayData(
|
||||
data, kExternalUnsignedByteArray, length);
|
||||
buffer->Set(PerIsolateData::byteLength_string(isolate),
|
||||
Int32::New(static_cast<int32_t>(length), isolate), ReadOnly);
|
||||
return buffer;
|
||||
}
|
||||
|
||||
|
||||
@ -676,7 +676,7 @@ bool Runtime::SetupArrayBuffer(Isolate* isolate,
|
||||
array_buffer->set_backing_store(data);
|
||||
|
||||
Handle<Object> byte_length =
|
||||
isolate->factory()->NewNumberFromSize(allocated_length);
|
||||
isolate->factory()->NewNumber(static_cast<double>(allocated_length));
|
||||
CHECK(byte_length->IsSmi() || byte_length->IsHeapNumber());
|
||||
array_buffer->set_byte_length(*byte_length);
|
||||
return true;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user