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-rw-r--r--third_party/abseil_cpp/absl/base/internal/scheduling_mode.h58
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diff --git a/third_party/abseil_cpp/absl/base/internal/scheduling_mode.h b/third_party/abseil_cpp/absl/base/internal/scheduling_mode.h
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--- a/third_party/abseil_cpp/absl/base/internal/scheduling_mode.h
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-// Copyright 2017 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-// Core interfaces and definitions used by by low-level interfaces such as
-// SpinLock.
-
-#ifndef ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
-#define ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace base_internal {
-
-// Used to describe how a thread may be scheduled.  Typically associated with
-// the declaration of a resource supporting synchronized access.
-//
-// SCHEDULE_COOPERATIVE_AND_KERNEL:
-// Specifies that when waiting, a cooperative thread (e.g. a Fiber) may
-// reschedule (using base::scheduling semantics); allowing other cooperative
-// threads to proceed.
-//
-// SCHEDULE_KERNEL_ONLY: (Also described as "non-cooperative")
-// Specifies that no cooperative scheduling semantics may be used, even if the
-// current thread is itself cooperatively scheduled.  This means that
-// cooperative threads will NOT allow other cooperative threads to execute in
-// their place while waiting for a resource of this type.  Host operating system
-// semantics (e.g. a futex) may still be used.
-//
-// When optional, clients should strongly prefer SCHEDULE_COOPERATIVE_AND_KERNEL
-// by default.  SCHEDULE_KERNEL_ONLY should only be used for resources on which
-// base::scheduling (e.g. the implementation of a Scheduler) may depend.
-//
-// NOTE: Cooperative resources may not be nested below non-cooperative ones.
-// This means that it is invalid to to acquire a SCHEDULE_COOPERATIVE_AND_KERNEL
-// resource if a SCHEDULE_KERNEL_ONLY resource is already held.
-enum SchedulingMode {
-  SCHEDULE_KERNEL_ONLY = 0,         // Allow scheduling only the host OS.
-  SCHEDULE_COOPERATIVE_AND_KERNEL,  // Also allow cooperative scheduling.
-};
-
-}  // namespace base_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_