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LibWeb: Add a naive Resource cache

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This patch introduces a caching mechanism in ResourceLoader. It's keyed
on a LoadRequest object which is what you provide to load_resource()
when you want to load a resource.

We currently never prune the cache, so resources will stay in there
forever. This is obviously not gonna stay that way, but we're just
getting started here. :^)

This should drastically reduce the number of requests when loading
some sites (like Twitter) that reuse the same images over and over.
This commit is contained in:
Andreas Kling 2020-06-01 21:58:29 +02:00
parent f249f07699
commit 7af337764e
7 changed files with 94 additions and 15 deletions
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9
Libraries/LibWeb/Loader/Resource.h
View file

@ -33,6 +33,7 @@
#include <AK/RefCounted.h>
#include <AK/URL.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Loader/LoadRequest.h>
namespace Web {
@ -43,7 +44,7 @@ class Resource : public RefCounted<Resource> {
AK_MAKE_NONMOVABLE(Resource);
public:
static NonnullRefPtr<Resource> create(Badge<ResourceLoader>, const URL&);
static NonnullRefPtr<Resource> create(Badge<ResourceLoader>, const LoadRequest&);
~Resource();
bool is_loaded() const { return m_loaded; }
@ -53,7 +54,7 @@ public:
bool has_encoded_data() const { return !m_encoded_data.is_null(); }
const URL& url() const { return m_url; }
const URL& url() const { return m_request.url(); }
const ByteBuffer& encoded_data() const { return m_encoded_data; }
void register_client(Badge<ResourceClient>, ResourceClient&);
@ -75,9 +76,9 @@ public:
void did_fail(Badge<ResourceLoader>, const String& error);
private:
explicit Resource(const URL&);
explicit Resource(const LoadRequest&);
URL m_url;
LoadRequest m_request;
ByteBuffer m_encoded_data;
bool m_loaded { false };
bool m_failed { false };