| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/net/timed_cache.h" |
| |
| #include "url/gurl.h" |
| |
| namespace chrome_browser_net { |
| |
| TimedCache::TimedCache(const base::TimeDelta& max_duration) |
| : mru_cache_(UrlMruTimedCache::NO_AUTO_EVICT), |
| max_duration_(max_duration) { |
| } |
| |
| // Make Clang compilation happy with explicit destructor. |
| TimedCache::~TimedCache() {} |
| |
| bool TimedCache::WasRecentlySeen(const GURL& url) { |
| DCHECK_EQ(url.GetWithEmptyPath(), url); |
| // Evict any overly old entries. |
| base::TimeTicks now = base::TimeTicks::Now(); |
| UrlMruTimedCache::reverse_iterator eldest = mru_cache_.rbegin(); |
| while (!mru_cache_.empty()) { |
| DCHECK(eldest == mru_cache_.rbegin()); |
| if (now - eldest->second < max_duration_) |
| break; |
| eldest = mru_cache_.Erase(eldest); |
| } |
| return mru_cache_.end() != mru_cache_.Peek(url); |
| } |
| |
| void TimedCache::SetRecentlySeen(const GURL& url) { |
| DCHECK_EQ(url.GetWithEmptyPath(), url); |
| mru_cache_.Put(url, base::TimeTicks::Now()); |
| } |
| |
| } // namespace chrome_browser_net |