1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsXULPrototypeCache_h__
#define nsXULPrototypeCache_h__
#include "nsCOMPtr.h"
#include "nsIObserver.h"
#include "nsXBLDocumentInfo.h"
#include "nsJSThingHashtable.h"
#include "nsInterfaceHashtable.h"
#include "nsRefPtrHashtable.h"
#include "nsURIHashKey.h"
#include "nsXULPrototypeDocument.h"
#include "nsIInputStream.h"
#include "nsIStorageStream.h"
#include "mozilla/scache/StartupCache.h"
namespace mozilla {
class CSSStyleSheet;
} // namespace mozilla
/**
* The XUL prototype cache can be used to store and retrieve shared data for
* XUL documents, style sheets, XBL, and scripts.
*
* The cache has two levels:
* 1. In-memory hashtables
* 2. The on-disk cache file.
*/
class nsXULPrototypeCache : public nsIObserver
{
public:
// nsISupports
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
bool IsCached(nsIURI* aURI) {
return GetPrototype(aURI) != nullptr;
}
void AbortCaching();
/**
* Whether the prototype cache is enabled.
*/
bool IsEnabled();
/**
* Flush the cache; remove all XUL prototype documents, style
* sheets, and scripts.
*/
void Flush();
// The following methods are used to put and retrive various items into and
// from the cache.
nsXULPrototypeDocument* GetPrototype(nsIURI* aURI);
nsresult PutPrototype(nsXULPrototypeDocument* aDocument);
JSScript* GetScript(nsIURI* aURI);
nsresult PutScript(nsIURI* aURI, JS::Handle<JSScript*> aScriptObject);
nsXBLDocumentInfo* GetXBLDocumentInfo(nsIURI* aURL) {
return mXBLDocTable.GetWeak(aURL);
}
nsresult PutXBLDocumentInfo(nsXBLDocumentInfo* aDocumentInfo);
/**
* Get a style sheet by URI. If the style sheet is not in the cache,
* returns nullptr.
*/
mozilla::CSSStyleSheet* GetStyleSheet(nsIURI* aURI) {
return mStyleSheetTable.GetWeak(aURI);
}
/**
* Store a style sheet in the cache. The key, style sheet's URI is obtained
* from the style sheet itself.
*/
nsresult PutStyleSheet(mozilla::CSSStyleSheet* aStyleSheet);
/**
* Write the XUL prototype document to a cache file. The proto must be
* fully loaded.
*/
nsresult WritePrototype(nsXULPrototypeDocument* aPrototypeDocument);
/**
* This interface allows partial reads and writes from the buffers in the
* startupCache.
*/
nsresult GetInputStream(nsIURI* aURI, nsIObjectInputStream** objectInput);
nsresult FinishInputStream(nsIURI* aURI);
nsresult GetOutputStream(nsIURI* aURI, nsIObjectOutputStream** objectOutput);
nsresult FinishOutputStream(nsIURI* aURI);
nsresult HasData(nsIURI* aURI, bool* exists);
static nsXULPrototypeCache* GetInstance();
static nsXULPrototypeCache* MaybeGetInstance() { return sInstance; }
static void ReleaseGlobals()
{
NS_IF_RELEASE(sInstance);
}
void MarkInCCGeneration(uint32_t aGeneration);
void MarkInGC(JSTracer* aTrc);
void FlushScripts();
protected:
friend nsresult
NS_NewXULPrototypeCache(nsISupports* aOuter, REFNSIID aIID, void** aResult);
nsXULPrototypeCache();
virtual ~nsXULPrototypeCache();
static nsXULPrototypeCache* sInstance;
void FlushSkinFiles();
nsRefPtrHashtable<nsURIHashKey,nsXULPrototypeDocument> mPrototypeTable; // owns the prototypes
nsRefPtrHashtable<nsURIHashKey,mozilla::CSSStyleSheet> mStyleSheetTable;
nsJSThingHashtable<nsURIHashKey, JSScript*> mScriptTable;
nsRefPtrHashtable<nsURIHashKey,nsXBLDocumentInfo> mXBLDocTable;
// URIs already written to the startup cache, to prevent double-caching.
nsTHashtable<nsURIHashKey> mStartupCacheURITable;
nsInterfaceHashtable<nsURIHashKey, nsIStorageStream> mOutputStreamTable;
nsInterfaceHashtable<nsURIHashKey, nsIObjectInputStream> mInputStreamTable;
// Bootstrap caching service
nsresult BeginCaching(nsIURI* aDocumentURI);
};
#endif // nsXULPrototypeCache_h__
|
