content/browser/service_worker/service_worker_cache_scheduler.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/service_worker/service_worker_cache_scheduler.h"
   6
   7 #include <string>
   8
   9 #include "base/logging.h"
  10
  11 namespace content {
  12
  13 ServiceWorkerCacheScheduler::ServiceWorkerCacheScheduler()
  14     : operation_running_(false) {
  15 }
  16
  17 ServiceWorkerCacheScheduler::~ServiceWorkerCacheScheduler() {
  18 }
  19
  20 void ServiceWorkerCacheScheduler::ScheduleOperation(
  21     const base::Closure& closure) {
  22   pending_operations_.push_back(closure);
  23   RunOperationIfIdle();
  24 }
  25
  26 void ServiceWorkerCacheScheduler::CompleteOperationAndRunNext() {
  27   DCHECK(operation_running_);
  28   operation_running_ = false;
  29   RunOperationIfIdle();
  30 }
  31
  32 bool ServiceWorkerCacheScheduler::ScheduledOperations() const {
  33   return operation_running_ || !pending_operations_.empty();
  34 }
  35
  36 void ServiceWorkerCacheScheduler::RunOperationIfIdle() {
  37   if (!operation_running_ && !pending_operations_.empty()) {
  38     operation_running_ = true;
  39     // TODO(jkarlin): Run multiple operations in parallel where allowed.
  40     base::Closure closure = pending_operations_.front();
  41     pending_operations_.pop_front();
  42     closure.Run();
  43   }
  44 }
  45
  46 }  // namespace content