Alexander Aprelev
4ccae238ea
TransferableTypedData instances are one-use kind of thing: once receiver materializes it, it can't be used
again, once sender sends it out to an isolate, sender can't send it to different isolate.
Example of use:
sender isolate:
```
Future<TransferableTypedData> consolidateHttpClientResponseBytes(HttpClientResponse response) {
final completer = Completer<TransferableTypedData>();
final chunks = <Uint8List>[];
response.listen((List<int> chunk) {
chunks.add(chunk);
}, onDone: () {
completer.complete(TransferableTypedData.fromList(chunks));
});
return completer.future;
}
...
sendPort.send(await consolidateHttpClientResponseBytes(response));
```
receiver isolate:
```
RawReceivePort port = RawReceivePort((TransferableTypedData transferable) {
Uint8List content = transferable.materialize().asUint8List();
...
});
```
31959[tr] and 31960[tr] tests were inspired by dartbug.com/31959, dartbug.com/31960 that this CL attempts to address:
```
╰─➤ out/ReleaseX64/dart 31960.dart
sending...
163ms for round-trip
sending...
81ms for round-trip
sending...
20ms for round-trip
sending...
14ms for round-trip
sending...
20ms for round-trip
sending...
14ms for round-trip
```
(notice no "since last checking" pauses") vs
```
╰─➤ out/ReleaseX64/dart 31960.dart
sending...
154ms since last checkin
174ms for round-trip
sending...
68ms since last checkin
9ms since last checkin
171ms for round-trip
sending...
13ms since last checkin
108ms for round-trip
sending...
14ms since last checkin
108ms for round-trip
sending...
14ms since last checkin
107ms for round-trip
```
Change-Id: I0fcb5ce285394f498c3f1db4414204531f98199d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99623
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
215 lines
12 KiB
C++
215 lines
12 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_CLASS_ID_H_
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#define RUNTIME_VM_CLASS_ID_H_
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// This header defines the list of VM implementation classes and their ids.
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//
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// Note: we assume that all builds of Dart VM use exactly the same class ids
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// for these classes.
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namespace dart {
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#define CLASS_LIST_NO_OBJECT_NOR_STRING_NOR_ARRAY(V) \
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V(Class) \
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V(PatchClass) \
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V(Function) \
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V(ClosureData) \
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V(SignatureData) \
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V(RedirectionData) \
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V(FfiTrampolineData) \
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V(Field) \
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V(Script) \
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V(Library) \
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V(Namespace) \
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V(KernelProgramInfo) \
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V(Code) \
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V(Bytecode) \
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V(Instructions) \
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V(ObjectPool) \
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V(PcDescriptors) \
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V(CodeSourceMap) \
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V(StackMap) \
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V(LocalVarDescriptors) \
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V(ExceptionHandlers) \
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V(Context) \
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V(ContextScope) \
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V(SingleTargetCache) \
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V(UnlinkedCall) \
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V(ICData) \
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V(MegamorphicCache) \
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V(SubtypeTestCache) \
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V(Error) \
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V(ApiError) \
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V(LanguageError) \
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V(UnhandledException) \
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V(UnwindError) \
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V(Instance) \
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V(LibraryPrefix) \
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V(TypeArguments) \
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V(AbstractType) \
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V(Type) \
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V(TypeRef) \
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V(TypeParameter) \
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V(Closure) \
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V(Number) \
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V(Integer) \
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V(Smi) \
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V(Mint) \
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V(Double) \
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V(Bool) \
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V(GrowableObjectArray) \
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V(Float32x4) \
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V(Int32x4) \
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V(Float64x2) \
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V(TypedDataBase) \
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V(TypedData) \
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V(ExternalTypedData) \
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V(TypedDataView) \
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V(Pointer) \
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V(DynamicLibrary) \
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V(Capability) \
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V(ReceivePort) \
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V(SendPort) \
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V(StackTrace) \
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V(RegExp) \
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V(WeakProperty) \
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V(MirrorReference) \
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V(LinkedHashMap) \
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V(UserTag) \
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V(TransferableTypedData)
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#define CLASS_LIST_ARRAYS(V) \
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V(Array) \
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V(ImmutableArray)
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#define CLASS_LIST_STRINGS(V) \
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V(String) \
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V(OneByteString) \
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V(TwoByteString) \
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V(ExternalOneByteString) \
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V(ExternalTwoByteString)
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#define CLASS_LIST_TYPED_DATA(V) \
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V(Int8Array) \
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V(Uint8Array) \
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V(Uint8ClampedArray) \
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V(Int16Array) \
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V(Uint16Array) \
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V(Int32Array) \
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V(Uint32Array) \
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V(Int64Array) \
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V(Uint64Array) \
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V(Float32Array) \
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V(Float64Array) \
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V(Float32x4Array) \
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V(Int32x4Array) \
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V(Float64x2Array)
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#define CLASS_LIST_FFI_TYPE_MARKER(V) \
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V(Int8) \
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V(Int16) \
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V(Int32) \
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V(Int64) \
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V(Uint8) \
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V(Uint16) \
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V(Uint32) \
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V(Uint64) \
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V(IntPtr) \
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V(Float) \
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V(Double) \
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V(Void)
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#define CLASS_LIST_FFI(V) \
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V(Pointer) \
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V(NativeFunction) \
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CLASS_LIST_FFI_TYPE_MARKER(V) \
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V(NativeType) \
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V(DynamicLibrary)
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#define DART_CLASS_LIST_TYPED_DATA(V) \
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V(Int8) \
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V(Uint8) \
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V(Uint8Clamped) \
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V(Int16) \
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V(Uint16) \
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V(Int32) \
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V(Uint32) \
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V(Int64) \
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V(Uint64) \
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V(Float32) \
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V(Float64) \
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V(Float32x4) \
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V(Int32x4) \
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V(Float64x2)
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#define CLASS_LIST_FOR_HANDLES(V) \
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CLASS_LIST_NO_OBJECT_NOR_STRING_NOR_ARRAY(V) \
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V(Array) \
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V(String)
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#define CLASS_LIST_NO_OBJECT(V) \
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CLASS_LIST_NO_OBJECT_NOR_STRING_NOR_ARRAY(V) \
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CLASS_LIST_ARRAYS(V) \
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CLASS_LIST_STRINGS(V)
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#define CLASS_LIST(V) \
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V(Object) \
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CLASS_LIST_NO_OBJECT(V)
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enum ClassId {
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// Illegal class id.
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kIllegalCid = 0,
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// A sentinel used by the vm service's heap snapshots to represent references
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// from the stack.
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kStackCid = 1,
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// The following entries describes classes for pseudo-objects in the heap
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// that should never be reachable from live objects. Free list elements
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// maintain the free list for old space, and forwarding corpses are used to
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// implement one-way become.
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kFreeListElement,
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kForwardingCorpse,
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// List of Ids for predefined classes.
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#define DEFINE_OBJECT_KIND(clazz) k##clazz##Cid,
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CLASS_LIST(DEFINE_OBJECT_KIND)
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#undef DEFINE_OBJECT_KIND
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// clang-format off
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#define DEFINE_OBJECT_KIND(clazz) kFfi##clazz##Cid,
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CLASS_LIST_FFI(DEFINE_OBJECT_KIND)
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#undef DEFINE_OBJECT_KIND
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#define DEFINE_OBJECT_KIND(clazz) \
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kTypedData##clazz##Cid, \
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kTypedData##clazz##ViewCid, \
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kExternalTypedData##clazz##Cid,
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CLASS_LIST_TYPED_DATA(DEFINE_OBJECT_KIND)
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#undef DEFINE_OBJECT_KIND
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kByteDataViewCid,
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kByteBufferCid,
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// clang-format on
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// The following entries do not describe a predefined class, but instead
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// are class indexes for pre-allocated instances (Null, dynamic and Void).
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kNullCid,
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kDynamicCid,
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kVoidCid,
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kNumPredefinedCids,
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};
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// Keep these in sync with the cid numbering above.
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const int kTypedDataCidRemainderInternal = 0;
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const int kTypedDataCidRemainderView = 1;
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const int kTypedDataCidRemainderExternal = 2;
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} // namespace dart
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#endif // RUNTIME_VM_CLASS_ID_H_
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