HttpCache::Transaction layer allowing parallel validation

net/http/mock_http_cache.cc

 // Copyright (c) 2012 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 "net/http/mock_http_cache.h"
 
 #include <limits>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 516 matching lines @@
     it->second->Release();
   entries_.clear();
 }
 
 void MockDiskCache::CallbackLater(const CompletionCallback& callback,
                                   int result) {
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&CallbackForwader, callback, result));
 }
 
+bool MockDiskCache::IsDiskEntryDoomed(const std::string& key) {

[jkarlin, 2017/04/20 15:05:40]

It looks as if MockDiskCache::DoomEntry doesn't call entry->Doom() so it won't
have is_doomed set? It won't be in entries_ either if DoomEntry was called.

+  auto it = entries_.find(key);
+  if (it == entries_.end())
+    return false;
+  return it->second->is_doomed();
+}
+
 //-----------------------------------------------------------------------------
 
 int MockBackendFactory::CreateBackend(
     NetLog* net_log,
     std::unique_ptr<disk_cache::Backend>* backend,
     const CompletionCallback& callback) {
   backend->reset(new MockDiskCache());
   return OK;
 }
 
@@ skipping 93 matching lines @@
     return test_mode;
 
   return g_test_mode;
 }
 
 // Static.
 void MockHttpCache::SetTestMode(int test_mode) {
   g_test_mode = test_mode;
 }
 
+bool MockHttpCache::IsWriterPresent(const std::string& key) {
+  HttpCache::ActiveEntry* entry = http_cache_.FindActiveEntry(key);
+  if (entry)
+    return entry->writer;
+  return false;
+}
+
+bool MockHttpCache::IsHeadersTransactionPresent(const std::string& key) {
+  HttpCache::ActiveEntry* entry = http_cache_.FindActiveEntry(key);
+  if (entry)
+    return entry->headers_transaction;
+  return false;
+}
+
+int MockHttpCache::GetCountReaders(const std::string& key) {

[jkarlin, 2017/04/20 15:05:40]

return size_t

+  HttpCache::ActiveEntry* entry = http_cache_.FindActiveEntry(key);
+  if (entry)
+    return entry->readers.size();
+  return false;
+}
+
+int MockHttpCache::GetCountAddToEntryQueue(const std::string& key) {

[jkarlin, 2017/04/20 15:05:40]

return size_t

+  HttpCache::ActiveEntry* entry = http_cache_.FindActiveEntry(key);
+  if (entry)
+    return entry->add_to_entry_queue.size();
+  return false;
+}
+
+int MockHttpCache::GetCountDoneHeadersQueue(const std::string& key) {

[jkarlin, 2017/04/20 15:05:40]

return size_t

+  HttpCache::ActiveEntry* entry = http_cache_.FindActiveEntry(key);
+  if (entry)
+    return entry->done_headers_queue.size();
+  return false;
+}
+
 //-----------------------------------------------------------------------------
 
 int MockDiskCacheNoCB::CreateEntry(const std::string& key,
                                    disk_cache::Entry** entry,
                                    const CompletionCallback& callback) {
   return ERR_IO_PENDING;
 }
 
 //-----------------------------------------------------------------------------
 
@@ skipping 36 matching lines @@
   if (!callback_.is_null()) {
     if (!fail_)
       backend_->reset(new MockDiskCache());
     CompletionCallback cb = callback_;
     callback_.Reset();
     cb.Run(Result());  // This object can be deleted here.
   }
 }
 
 }  // namespace net