| // Copyright 2015 Google Inc. |
| // |
| // 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. |
| // |
| // Author: cheesy@google.com (Steve Hill) |
| |
| #include "net/instaweb/rewriter/public/compatible_central_controller.h" |
| |
| #include "pagespeed/kernel/util/statistics_work_bound.h" |
| |
| namespace net_instaweb { |
| |
| const char CompatibleCentralController::kCurrentExpensiveOperations[] = |
| "current-expensive-operations"; |
| |
| CompatibleCentralController::CompatibleCentralController( |
| int max_expensive_operations, Statistics* statistics) |
| : work_bound_(new StatisticsWorkBound( |
| statistics->GetUpDownCounter(kCurrentExpensiveOperations), |
| max_expensive_operations)) {} |
| |
| CompatibleCentralController::~CompatibleCentralController() { |
| } |
| |
| void CompatibleCentralController::InitStats(Statistics* statistics) { |
| statistics->AddGlobalUpDownCounter(kCurrentExpensiveOperations); |
| } |
| |
| void CompatibleCentralController::ScheduleExpensiveOperation( |
| Function* callback) { |
| if (work_bound_->TryToWork()) { |
| callback->CallRun(); |
| } else { |
| callback->CallCancel(); |
| } |
| } |
| |
| void CompatibleCentralController::NotifyExpensiveOperationComplete() { |
| work_bound_->WorkComplete(); |
| } |
| |
| } // namespace net_instaweb |