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content / browser / code_cache / generated_code_cache_context.h [blame]
// 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_CONTEXT_H_
#define CONTENT_BROWSER_CODE_CACHE_GENERATED_CODE_CACHE_CONTEXT_H_
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/task/sequenced_task_runner.h"
#include "base/thread_annotations.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_thread.h"
namespace content {
class GeneratedCodeCache;
// One instance exists per disk-backed (non in-memory) storage contexts. This
// owns the instance of GeneratedCodeCache that is used to store the data
// generated by the renderer (for ex: code caches for script resources). This
// initializes and closes the code cache on the code cache thread. The
// instance of this class (|this|) itself is constructed on the UI thread.
class CONTENT_EXPORT GeneratedCodeCacheContext
: public base::RefCountedThreadSafe<GeneratedCodeCacheContext> {
public:
REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE();
// Runs a task on the code cache thread, or immediately if already on the code
// cache thread.
static void RunOrPostTask(scoped_refptr<GeneratedCodeCacheContext> context,
const base::Location& location,
base::OnceClosure task);
// Gets the task runner for the code cache thread.
static scoped_refptr<base::SequencedTaskRunner> GetTaskRunner(
scoped_refptr<GeneratedCodeCacheContext> context);
GeneratedCodeCacheContext();
GeneratedCodeCacheContext(const GeneratedCodeCacheContext&) = delete;
GeneratedCodeCacheContext& operator=(const GeneratedCodeCacheContext&) =
delete;
// Initialize is called on the UI thread when the StoragePartition is
// being setup.
void Initialize(const base::FilePath& path, int max_bytes);
void Shutdown();
// Call on the code cache thread to get the code cache instances.
GeneratedCodeCache* generated_js_code_cache() const;
GeneratedCodeCache* generated_wasm_code_cache() const;
GeneratedCodeCache* generated_webui_js_code_cache() const;
private:
friend class base::RefCountedThreadSafe<GeneratedCodeCacheContext>;
~GeneratedCodeCacheContext();
void InitializeOnThread(const base::FilePath& path, int max_bytes);
void ShutdownOnThread();
// Created, used and deleted on the code cache thread.
std::unique_ptr<GeneratedCodeCache, base::OnTaskRunnerDeleter>
generated_js_code_cache_ GUARDED_BY_CONTEXT(sequence_checker_) = {
nullptr, base::OnTaskRunnerDeleter(nullptr)};
std::unique_ptr<GeneratedCodeCache, base::OnTaskRunnerDeleter>
generated_wasm_code_cache_ GUARDED_BY_CONTEXT(sequence_checker_) = {
nullptr, base::OnTaskRunnerDeleter(nullptr)};
std::unique_ptr<GeneratedCodeCache, base::OnTaskRunnerDeleter>
generated_webui_js_code_cache_ GUARDED_BY_CONTEXT(sequence_checker_) = {
nullptr, base::OnTaskRunnerDeleter(nullptr)};
scoped_refptr<base::SequencedTaskRunner> task_runner_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace content
#endif // CONTENT_BROWSER_CODE_CACHE_GENERATED_CODE_CACHE_CONTEXT_H_