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/*
*
* Copyright 2016 gRPC 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
*
* http://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.
*
*/
#ifndef GRPCPP_RESOURCE_QUOTA_H
#define GRPCPP_RESOURCE_QUOTA_H
struct grpc_resource_quota;
#include <grpcpp/impl/codegen/config.h>
#include <grpcpp/impl/codegen/grpc_library.h>
namespace grpc {
/// ResourceQuota represents a bound on memory and thread usage by the gRPC
/// library. A ResourceQuota can be attached to a server (via \a ServerBuilder),
/// or a client channel (via \a ChannelArguments).
/// gRPC will attempt to keep memory and threads used by all attached entities
/// below the ResourceQuota bound.
class ResourceQuota final : private grpc::GrpcLibraryCodegen {
public:
/// \param name - a unique name for this ResourceQuota.
explicit ResourceQuota(const TString& name);
ResourceQuota();
~ResourceQuota() override;
/// Resize this \a ResourceQuota to a new size. If \a new_size is smaller
/// than the current size of the pool, memory usage will be monotonically
/// decreased until it falls under \a new_size.
/// No time bound is given for this to occur however.
ResourceQuota& Resize(size_t new_size);
/// Set the max number of threads that can be allocated from this
/// ResourceQuota object.
///
/// If the new_max_threads value is smaller than the current value, no new
/// threads are allocated until the number of active threads fall below
/// new_max_threads. There is no time bound on when this may happen i.e none
/// of the current threads are forcefully destroyed and all threads run their
/// normal course.
ResourceQuota& SetMaxThreads(int new_max_threads);
grpc_resource_quota* c_resource_quota() const { return impl_; }
private:
ResourceQuota(const ResourceQuota& rhs);
ResourceQuota& operator=(const ResourceQuota& rhs);
grpc_resource_quota* const impl_;
};
} // namespace grpc
#endif // GRPCPP_RESOURCE_QUOTA_H
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