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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SRC_NODE_OBJECT_WRAP_H_
#define SRC_NODE_OBJECT_WRAP_H_
#include "v8.h"
#include <cassert>
namespace node {
class ObjectWrap {
public:
ObjectWrap() {
refs_ = 0;
}
virtual ~ObjectWrap() {
if (persistent().IsEmpty())
return;
persistent().ClearWeak();
persistent().Reset();
}
template <class T>
static inline T* Unwrap(v8::Local<v8::Object> handle) {
assert(!handle.IsEmpty());
assert(handle->InternalFieldCount() > 0);
// Cast to ObjectWrap before casting to T. A direct cast from void
// to T won't work right when T has more than one base class.
void* ptr = handle->GetAlignedPointerFromInternalField(0);
ObjectWrap* wrap = static_cast<ObjectWrap*>(ptr);
return static_cast<T*>(wrap);
}
inline v8::Local<v8::Object> handle() {
return handle(v8::Isolate::GetCurrent());
}
inline v8::Local<v8::Object> handle(v8::Isolate* isolate) {
return v8::Local<v8::Object>::New(isolate, persistent());
}
// NOLINTNEXTLINE(runtime/v8_persistent)
inline v8::Persistent<v8::Object>& persistent() {
return handle_;
}
protected:
inline void Wrap(v8::Local<v8::Object> handle) {
assert(persistent().IsEmpty());
assert(handle->InternalFieldCount() > 0);
handle->SetAlignedPointerInInternalField(0, this);
persistent().Reset(v8::Isolate::GetCurrent(), handle);
MakeWeak();
}
inline void MakeWeak() {
persistent().SetWeak(this, WeakCallback, v8::WeakCallbackType::kParameter);
}
/* Ref() marks the object as being attached to an event loop.
* Refed objects will not be garbage collected, even if
* all references are lost.
*/
virtual void Ref() {
assert(!persistent().IsEmpty());
persistent().ClearWeak();
refs_++;
}
/* Unref() marks an object as detached from the event loop. This is its
* default state. When an object with a "weak" reference changes from
* attached to detached state it will be freed. Be careful not to access
* the object after making this call as it might be gone!
* (A "weak reference" means an object that only has a
* persistent handle.)
*
* DO NOT CALL THIS FROM DESTRUCTOR
*/
virtual void Unref() {
assert(!persistent().IsEmpty());
assert(!persistent().IsWeak());
assert(refs_ > 0);
if (--refs_ == 0)
MakeWeak();
}
int refs_; // ro
private:
static void WeakCallback(
const v8::WeakCallbackInfo<ObjectWrap>& data) {
ObjectWrap* wrap = data.GetParameter();
assert(wrap->refs_ == 0);
wrap->handle_.Reset();
delete wrap;
}
// NOLINTNEXTLINE(runtime/v8_persistent)
v8::Persistent<v8::Object> handle_;
};
} // namespace node
#endif // SRC_NODE_OBJECT_WRAP_H_
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| cppgc | Folder | 0755 |
|
|
| libplatform | Folder | 0755 |
|
|
| openssl | Folder | 0755 |
|
|
| uv | Folder | 0755 |
|
|
| common.gypi | File | 26.59 KB | 0644 |
|
| config.gypi | File | 32.08 KB | 0644 |
|
| js_native_api.h | File | 31.64 KB | 0644 |
|
| js_native_api_types.h | File | 6.87 KB | 0644 |
|
| node.h | File | 67.99 KB | 0644 |
|
| node_api.h | File | 10.34 KB | 0644 |
|
| node_api_types.h | File | 1.57 KB | 0644 |
|
| node_buffer.h | File | 3.6 KB | 0644 |
|
| node_object_wrap.h | File | 3.78 KB | 0644 |
|
| node_version.h | File | 4.14 KB | 0644 |
|
| uv.h | File | 71.1 KB | 0644 |
|
| v8-array-buffer.h | File | 17.89 KB | 0644 |
|
| v8-callbacks.h | File | 16.59 KB | 0644 |
|
| v8-container.h | File | 5.82 KB | 0644 |
|
| v8-context.h | File | 17.76 KB | 0644 |
|
| v8-cppgc.h | File | 7.46 KB | 0644 |
|
| v8-data.h | File | 1.58 KB | 0644 |
|
| v8-date.h | File | 1.19 KB | 0644 |
|
| v8-debug.h | File | 5.04 KB | 0644 |
|
| v8-embedder-heap.h | File | 2.71 KB | 0644 |
|
| v8-embedder-state-scope.h | File | 1.46 KB | 0644 |
|
| v8-exception.h | File | 7.41 KB | 0644 |
|
| v8-extension.h | File | 1.83 KB | 0644 |
|
| v8-external.h | File | 924 B | 0644 |
|
| v8-forward.h | File | 1.65 KB | 0644 |
|
| v8-function-callback.h | File | 19.19 KB | 0644 |
|
| v8-function.h | File | 4.42 KB | 0644 |
|
| v8-handle-base.h | File | 4.3 KB | 0644 |
|
| v8-initialization.h | File | 10.23 KB | 0644 |
|
| v8-internal.h | File | 57.22 KB | 0644 |
|
| v8-isolate.h | File | 63.38 KB | 0644 |
|
| v8-json.h | File | 1.32 KB | 0644 |
|
| v8-local-handle.h | File | 23.6 KB | 0644 |
|
| v8-locker.h | File | 3.86 KB | 0644 |
|
| v8-maybe.h | File | 4.47 KB | 0644 |
|
| v8-memory-span.h | File | 6.27 KB | 0644 |
|
| v8-message.h | File | 7.24 KB | 0644 |
|
| v8-microtask-queue.h | File | 4.95 KB | 0644 |
|
| v8-microtask.h | File | 861 B | 0644 |
|
| v8-object.h | File | 29.55 KB | 0644 |
|
| v8-persistent-handle.h | File | 17.81 KB | 0644 |
|
| v8-platform.h | File | 47.9 KB | 0644 |
|
| v8-primitive-object.h | File | 2.53 KB | 0644 |
|
| v8-primitive.h | File | 27.69 KB | 0644 |
|
| v8-profiler.h | File | 41.11 KB | 0644 |
|
| v8-promise.h | File | 5.17 KB | 0644 |
|
| v8-proxy.h | File | 1.23 KB | 0644 |
|
| v8-regexp.h | File | 3.1 KB | 0644 |
|
| v8-script.h | File | 30.59 KB | 0644 |
|
| v8-snapshot.h | File | 10.15 KB | 0644 |
|
| v8-source-location.h | File | 2.54 KB | 0644 |
|
| v8-statistics.h | File | 7.45 KB | 0644 |
|
| v8-template.h | File | 50.36 KB | 0644 |
|
| v8-traced-handle.h | File | 12.4 KB | 0644 |
|
| v8-typed-array.h | File | 11.3 KB | 0644 |
|
| v8-unwinder.h | File | 4.64 KB | 0644 |
|
| v8-value-serializer.h | File | 10.56 KB | 0644 |
|
| v8-value.h | File | 16.71 KB | 0644 |
|
| v8-version.h | File | 773 B | 0644 |
|
| v8-wasm.h | File | 6 KB | 0644 |
|
| v8-weak-callback-info.h | File | 2.41 KB | 0644 |
|
| v8.h | File | 3.69 KB | 0644 |
|
| v8config.h | File | 32.85 KB | 0644 |
|
| zconf.h | File | 16.6 KB | 0644 |
|
| zlib.h | File | 95.17 KB | 0644 |
|