mirror of https://github.com/grpc/grpc.git
Retire the old atomic_with_atm.h and atomic_with_std.h as they are not needed anymore. Introduce helper methods which call GPR_ATM_INC_ADD_THEN and GPR_ATM_INC_CAS_THEN, and use them everywhere. Also introduce AtomicIncrementIfNonzero, originally authored by vjpai@. This is going to be used for completion queues.pull/18059/head
Soheil Hassas Yeganeh
6 years ago
parent
7e57732a1f
commit
508c8d805a
15 changed files with 69 additions and 135 deletions
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/*
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#ifndef GRPC_CORE_LIB_GPRPP_ATOMIC_WITH_ATM_H |
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#define GRPC_CORE_LIB_GPRPP_ATOMIC_WITH_ATM_H |
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#include <grpc/support/port_platform.h> |
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#include <grpc/support/atm.h> |
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namespace grpc_core { |
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enum MemoryOrderRelaxed { memory_order_relaxed }; |
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template <class T> |
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class atomic; |
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template <> |
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class atomic<bool> { |
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public: |
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atomic() { gpr_atm_no_barrier_store(&x_, static_cast<gpr_atm>(false)); } |
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explicit atomic(bool x) { |
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gpr_atm_no_barrier_store(&x_, static_cast<gpr_atm>(x)); |
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} |
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bool compare_exchange_strong(bool& expected, bool update, MemoryOrderRelaxed, |
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MemoryOrderRelaxed) { |
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if (!gpr_atm_no_barrier_cas(&x_, static_cast<gpr_atm>(expected), |
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static_cast<gpr_atm>(update))) { |
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expected = gpr_atm_no_barrier_load(&x_) != 0; |
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return false; |
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} |
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return true; |
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} |
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private: |
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gpr_atm x_; |
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}; |
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} // namespace grpc_core
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#endif /* GRPC_CORE_LIB_GPRPP_ATOMIC_WITH_ATM_H */ |
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/*
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#ifndef GRPC_CORE_LIB_GPRPP_ATOMIC_WITH_STD_H |
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#define GRPC_CORE_LIB_GPRPP_ATOMIC_WITH_STD_H |
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#include <grpc/support/port_platform.h> |
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#include <atomic> |
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namespace grpc_core { |
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template <class T> |
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using atomic = std::atomic<T>; |
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typedef std::memory_order memory_order; |
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} // namespace grpc_core
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#endif /* GRPC_CORE_LIB_GPRPP_ATOMIC_WITH_STD_H */ |
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