From c30a6232df03e1efbd9f3b226777b07e087a1122 Mon Sep 17 00:00:00 2001 From: Allan Sandfeld Jensen Date: Mon, 12 Oct 2020 14:27:29 +0200 Subject: BASELINE: Update Chromium to 85.0.4183.140 Change-Id: Iaa42f4680837c57725b1344f108c0196741f6057 Reviewed-by: Allan Sandfeld Jensen --- chromium/v8/src/heap/cppgc/task-handle.h | 47 ++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 chromium/v8/src/heap/cppgc/task-handle.h (limited to 'chromium/v8/src/heap/cppgc/task-handle.h') diff --git a/chromium/v8/src/heap/cppgc/task-handle.h b/chromium/v8/src/heap/cppgc/task-handle.h new file mode 100644 index 00000000000..cbd8cc4a61f --- /dev/null +++ b/chromium/v8/src/heap/cppgc/task-handle.h @@ -0,0 +1,47 @@ +// Copyright 2020 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 V8_HEAP_CPPGC_TASK_HANDLE_H_ +#define V8_HEAP_CPPGC_TASK_HANDLE_H_ + +#include + +#include "src/base/logging.h" + +namespace cppgc { +namespace internal { + +// A handle that is used for cancelling individual tasks. +struct SingleThreadedHandle { + struct NonEmptyTag {}; + + // Default construction results in empty handle. + SingleThreadedHandle() = default; + + explicit SingleThreadedHandle(NonEmptyTag) + : is_cancelled_(std::make_shared(false)) {} + + void Cancel() { + DCHECK(is_cancelled_); + *is_cancelled_ = true; + } + + bool IsCanceled() const { + DCHECK(is_cancelled_); + return *is_cancelled_; + } + + // A handle is active if it is non-empty and not cancelled. + explicit operator bool() const { + return is_cancelled_.get() && !*is_cancelled_.get(); + } + + private: + std::shared_ptr is_cancelled_; +}; + +} // namespace internal +} // namespace cppgc + +#endif // V8_HEAP_CPPGC_TASK_HANDLE_H_ -- cgit v1.2.1