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Name	Size	Permission	Date
cppgc	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
libplatform	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
uv	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
common.gypi	26.34 KB	-rw-r--r--	2026-04-09 14:29
config.gypi	18.27 KB	-rw-r--r--	2026-04-09 14:30
js_native_api.h	31.03 KB	-rw-r--r--	2026-04-09 14:29
js_native_api_types.h	7.42 KB	-rw-r--r--	2026-04-09 14:29
node.h	67.96 KB	-rw-r--r--	2026-04-09 14:29
node_api.h	10.13 KB	-rw-r--r--	2026-04-09 14:29
node_api_types.h	1.78 KB	-rw-r--r--	2026-04-09 14:29
node_buffer.h	3.6 KB	-rw-r--r--	2026-04-09 14:29
node_object_wrap.h	3.78 KB	-rw-r--r--	2026-04-09 14:29
node_version.h	4.14 KB	-rw-r--r--	2026-04-09 14:29
uv.h	71.1 KB	-rw-r--r--	2026-04-09 14:29
v8-array-buffer.h	17.89 KB	-rw-r--r--	2026-04-09 14:28
v8-callbacks.h	16.59 KB	-rw-r--r--	2026-04-09 14:28
v8-container.h	5.82 KB	-rw-r--r--	2026-04-09 14:28
v8-context.h	17.76 KB	-rw-r--r--	2026-04-09 14:28
v8-cppgc.h	7.46 KB	-rw-r--r--	2026-04-09 14:28
v8-data.h	1.58 KB	-rw-r--r--	2026-04-09 14:28
v8-date.h	1.19 KB	-rw-r--r--	2026-04-09 14:28
v8-debug.h	5.04 KB	-rw-r--r--	2026-04-09 14:28
v8-embedder-heap.h	2.71 KB	-rw-r--r--	2026-04-09 14:28
v8-embedder-state-scope.h	1.46 KB	-rw-r--r--	2026-04-09 14:28
v8-exception.h	7.41 KB	-rw-r--r--	2026-04-09 14:28
v8-extension.h	1.83 KB	-rw-r--r--	2026-04-09 14:28
v8-external.h	924 B	-rw-r--r--	2026-04-09 14:28
v8-forward.h	1.65 KB	-rw-r--r--	2026-04-09 14:28
v8-function-callback.h	19.19 KB	-rw-r--r--	2026-04-09 14:28
v8-function.h	4.42 KB	-rw-r--r--	2026-04-09 14:28
v8-handle-base.h	4.3 KB	-rw-r--r--	2026-04-09 14:28
v8-initialization.h	10.23 KB	-rw-r--r--	2026-04-09 14:28
v8-internal.h	57.22 KB	-rw-r--r--	2026-04-09 14:28
v8-isolate.h	63.38 KB	-rw-r--r--	2026-04-09 14:28
v8-json.h	1.32 KB	-rw-r--r--	2026-04-09 14:28
v8-local-handle.h	23.6 KB	-rw-r--r--	2026-04-09 14:28
v8-locker.h	3.86 KB	-rw-r--r--	2026-04-09 14:28
v8-maybe.h	4.47 KB	-rw-r--r--	2026-04-09 14:28
v8-memory-span.h	6.27 KB	-rw-r--r--	2026-04-09 14:28
v8-message.h	7.24 KB	-rw-r--r--	2026-04-09 14:28
v8-microtask-queue.h	4.95 KB	-rw-r--r--	2026-04-09 14:28
v8-microtask.h	861 B	-rw-r--r--	2026-04-09 14:28
v8-object.h	29.55 KB	-rw-r--r--	2026-04-09 14:28
v8-persistent-handle.h	17.81 KB	-rw-r--r--	2026-04-09 14:28
v8-platform.h	47.9 KB	-rw-r--r--	2026-04-09 14:28
v8-primitive-object.h	2.53 KB	-rw-r--r--	2026-04-09 14:28
v8-primitive.h	27.69 KB	-rw-r--r--	2026-04-09 14:28
v8-profiler.h	41.11 KB	-rw-r--r--	2026-04-09 14:28
v8-promise.h	5.17 KB	-rw-r--r--	2026-04-09 14:28
v8-proxy.h	1.23 KB	-rw-r--r--	2026-04-09 14:28
v8-regexp.h	3.1 KB	-rw-r--r--	2026-04-09 14:28
v8-script.h	30.59 KB	-rw-r--r--	2026-04-09 14:28
v8-snapshot.h	10.15 KB	-rw-r--r--	2026-04-09 14:28
v8-source-location.h	2.54 KB	-rw-r--r--	2026-04-09 14:28
v8-statistics.h	7.45 KB	-rw-r--r--	2026-04-09 14:28
v8-template.h	50.36 KB	-rw-r--r--	2026-04-09 14:28
v8-traced-handle.h	12.4 KB	-rw-r--r--	2026-04-09 14:28
v8-typed-array.h	11.3 KB	-rw-r--r--	2026-04-09 14:28
v8-unwinder.h	4.64 KB	-rw-r--r--	2026-04-09 14:28
v8-value-serializer.h	10.56 KB	-rw-r--r--	2026-04-09 14:28
v8-value.h	16.71 KB	-rw-r--r--	2026-04-09 14:28
v8-version.h	773 B	-rw-r--r--	2026-04-09 14:28
v8-wasm.h	6 KB	-rw-r--r--	2026-04-09 14:28
v8-weak-callback-info.h	2.41 KB	-rw-r--r--	2026-04-09 14:28
v8.h	3.69 KB	-rw-r--r--	2026-04-09 14:28
v8config.h	32.85 KB	-rw-r--r--	2026-04-09 14:28

Rename

// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef INCLUDE_V8_EMBEDDER_HEAP_H_
#define INCLUDE_V8_EMBEDDER_HEAP_H_

#include "v8-traced-handle.h"  // NOLINT(build/include_directory)
#include "v8config.h"          // NOLINT(build/include_directory)

namespace v8 {
namespace internal {
class TracedHandles;
}  // namespace internal

class Isolate;
class Value;

/**
 * Handler for embedder roots on non-unified heap garbage collections.
 */
class V8_EXPORT EmbedderRootsHandler {
 public:
  enum class RootHandling {
    kQueryEmbedderForNonDroppableReferences,
    kDontQueryEmbedderForAnyReference,
  };

virtual ~EmbedderRootsHandler() = default;

EmbedderRootsHandler() = default;
  explicit EmbedderRootsHandler(RootHandling default_traced_reference_handling)
      : default_traced_reference_handling_(default_traced_reference_handling) {}

/**
   * Returns true if the |TracedReference| handle should be considered as root
   * for the currently running non-tracing garbage collection and false
   * otherwise. The default implementation will keep all |TracedReference|
   * references as roots.
   *
   * If this returns false, then V8 may decide that the object referred to by
   * such a handle is reclaimed. In that case, V8 calls |ResetRoot()| for the
   * |TracedReference|.
   *
   * Note that the `handle` is different from the handle that the embedder holds
   * for retaining the object.
   *
   * The concrete implementations must be thread-safe.
   */
  virtual bool IsRoot(const v8::TracedReference<v8::Value>& handle) = 0;

/**
   * Used in combination with |IsRoot|. Called by V8 when an
   * object that is backed by a handle is reclaimed by a non-tracing garbage
   * collection. It is up to the embedder to reset the original handle.
   *
   * Note that the |handle| is different from the handle that the embedder holds
   * for retaining the object. It is up to the embedder to find the original
   * handle via the object or class id.
   */
  virtual void ResetRoot(const v8::TracedReference<v8::Value>& handle) = 0;

/**
   * Similar to |ResetRoot()|, but opportunistic. The function is called in
   * parallel for different handles and as such must be thread-safe. In case,
   * |false| is returned, |ResetRoot()| will be recalled for the same handle.
   */
  virtual bool TryResetRoot(const v8::TracedReference<v8::Value>& handle) {
    ResetRoot(handle);
    return true;
  }

private:
  const RootHandling default_traced_reference_handling_ =
      RootHandling::kQueryEmbedderForNonDroppableReferences;

friend class internal::TracedHandles;
};

}  // namespace v8

#endif  // INCLUDE_V8_EMBEDDER_HEAP_H_