1 // Copyright 2021 gRPC authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "src/core/lib/resource_quota/thread_quota.h" 16 17 #include <grpc/support/port_platform.h> 18 19 #include "absl/log/check.h" 20 21 namespace grpc_core { 22 23 ThreadQuota::ThreadQuota() = default; 24 25 ThreadQuota::~ThreadQuota() = default; 26 SetMax(size_t new_max)27void ThreadQuota::SetMax(size_t new_max) { 28 MutexLock lock(&mu_); 29 max_ = new_max; 30 } 31 Reserve(size_t num_threads)32bool ThreadQuota::Reserve(size_t num_threads) { 33 MutexLock lock(&mu_); 34 if (allocated_ + num_threads > max_) return false; 35 allocated_ += num_threads; 36 return true; 37 } 38 Release(size_t num_threads)39void ThreadQuota::Release(size_t num_threads) { 40 MutexLock lock(&mu_); 41 CHECK(num_threads <= allocated_); 42 allocated_ -= num_threads; 43 } 44 45 } // namespace grpc_core 46