| /* |
| * |
| * Copyright 2017 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. |
| * |
| */ |
| |
| #include <grpc/support/atm.h> |
| #include <grpc/support/useful.h> |
| |
| gpr_atm gpr_atm_no_barrier_clamped_add(gpr_atm *value, gpr_atm delta, |
| gpr_atm min, gpr_atm max) { |
| gpr_atm current_value; |
| gpr_atm new_value; |
| do { |
| current_value = gpr_atm_no_barrier_load(value); |
| new_value = GPR_CLAMP(current_value + delta, min, max); |
| if (new_value == current_value) break; |
| } while (!gpr_atm_no_barrier_cas(value, current_value, new_value)); |
| return new_value; |
| } |