generated_code_cache.h | Explore in Territory

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_CODE_CACHE_GENERATED_CODE_CACHE_H_
#define CONTENT_BROWSER_CODE_CACHE_GENERATED_CODE_CACHE_H_

#include <map>
#include <queue>

#include "base/containers/queue.h"
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "content/browser/code_cache/simple_lru_cache.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/base/big_buffer.h"
#include "net/base/io_buffer.h"
#include "net/base/network_isolation_key.h"
#include "net/disk_cache/disk_cache.h"
#include "url/origin.h"

namespace content {

// Cache for storing generated code from the renderer on the disk. This cache
// uses |resource_url| + |origin_lock| as a key for storing the generated code.
// |resource_url| is the url corresponding to the requested resource.
// |origin_lock| is the origin that the renderer which requested this resource
// is locked to. This is used to enforce site isolation policy on cached code.
// For example, if SitePerProcess is enabled and http://script.com/script1.js is
// requested by http://example.com, then http://script.com/script.js is the
// resource_url and http://example.com is the origin_lock.
//
// The key is generated by concatenating the serialized url and origin lock
// with a separator in between. The separator is non-valid URL characters, to
// prevent any attacks by crafting the URLs. |origin_lock| could be empty when
// renderer is not locked to an origin (ex:SitePerProcess is disabled) and it
// is safe to use only |resource_url| as the key in such cases.
//
// This uses a simple disk_cache backend. It just stores one data stream and
// stores response_time + generated code as one data blob.
//
// There exists one cache per storage partition and is owned by the storage
// partition. This cache is created, accessed and destroyed on the I/O
// thread.
class CONTENT_EXPORT GeneratedCodeCache { … };

}  // namespace content

#endif  // CONTENT_BROWSER_CODE_CACHE_GENERATED_CODE_CACHE_H_
chromium/content/browser/code_cache/generated_code_cache.h
