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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ | 5 #ifndef CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ |
| 6 #define CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ | 6 #define CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ |
| 7 | 7 |
| 8 #include <deque> | 8 #include <deque> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "content/common/indexed_db/indexed_db_key.h" | 12 #include "content/common/indexed_db/indexed_db_key.h" |
| 13 #include "content/public/common/serialized_script_value.h" | 13 #include "content/public/common/serialized_script_value.h" |
| 14 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCallbacks.h" | 14 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCallbacks.h" |
| 15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCursor.h" | 15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCursor.h" |
| 16 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKey.h" | 16 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKey.h" |
| 17 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSerialize
dScriptValue.h" | 17 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSerialize
dScriptValue.h" |
| 18 | 18 |
| 19 namespace content { |
| 20 |
| 19 class RendererWebIDBCursorImpl : public WebKit::WebIDBCursor { | 21 class RendererWebIDBCursorImpl : public WebKit::WebIDBCursor { |
| 20 public: | 22 public: |
| 21 explicit RendererWebIDBCursorImpl(int32 idb_cursor_id); | 23 explicit RendererWebIDBCursorImpl(int32 idb_cursor_id); |
| 22 virtual ~RendererWebIDBCursorImpl(); | 24 virtual ~RendererWebIDBCursorImpl(); |
| 23 | 25 |
| 24 virtual void advance(unsigned long count, | 26 virtual void advance(unsigned long count, |
| 25 WebKit::WebIDBCallbacks* callback, | 27 WebKit::WebIDBCallbacks* callback, |
| 26 WebKit::WebExceptionCode& ec); | 28 WebKit::WebExceptionCode& ec); |
| 27 virtual void continueFunction(const WebKit::WebIDBKey& key, | 29 virtual void continueFunction(const WebKit::WebIDBKey& key, |
| 28 WebKit::WebIDBCallbacks* callback, | 30 WebKit::WebIDBCallbacks* callback, |
| 29 WebKit::WebExceptionCode& ec); | 31 WebKit::WebExceptionCode& ec); |
| 30 virtual void deleteFunction(WebKit::WebIDBCallbacks* callback, | 32 virtual void deleteFunction(WebKit::WebIDBCallbacks* callback, |
| 31 WebKit::WebExceptionCode& ec); | 33 WebKit::WebExceptionCode& ec); |
| 32 virtual void postSuccessHandlerCallback(); | 34 virtual void postSuccessHandlerCallback(); |
| 33 | 35 |
| 34 void SetPrefetchData( | 36 void SetPrefetchData( |
| 35 const std::vector<content::IndexedDBKey>& keys, | 37 const std::vector<IndexedDBKey>& keys, |
| 36 const std::vector<content::IndexedDBKey>& primary_keys, | 38 const std::vector<IndexedDBKey>& primary_keys, |
| 37 const std::vector<content::SerializedScriptValue>& values); | 39 const std::vector<SerializedScriptValue>& values); |
| 38 | 40 |
| 39 void CachedContinue(WebKit::WebIDBCallbacks* callbacks); | 41 void CachedContinue(WebKit::WebIDBCallbacks* callbacks); |
| 40 void ResetPrefetchCache(); | 42 void ResetPrefetchCache(); |
| 41 | 43 |
| 42 private: | 44 private: |
| 43 int32 idb_cursor_id_; | 45 int32 idb_cursor_id_; |
| 44 | 46 |
| 45 // Prefetch cache. | 47 // Prefetch cache. |
| 46 std::deque<content::IndexedDBKey> prefetch_keys_; | 48 std::deque<IndexedDBKey> prefetch_keys_; |
| 47 std::deque<content::IndexedDBKey> prefetch_primary_keys_; | 49 std::deque<IndexedDBKey> prefetch_primary_keys_; |
| 48 std::deque<content::SerializedScriptValue> prefetch_values_; | 50 std::deque<SerializedScriptValue> prefetch_values_; |
| 49 | 51 |
| 50 // Number of continue calls that would qualify for a pre-fetch. | 52 // Number of continue calls that would qualify for a pre-fetch. |
| 51 int continue_count_; | 53 int continue_count_; |
| 52 | 54 |
| 53 // Number of items used from the last prefetch. | 55 // Number of items used from the last prefetch. |
| 54 int used_prefetches_; | 56 int used_prefetches_; |
| 55 | 57 |
| 56 // Number of onsuccess handlers we are waiting for. | 58 // Number of onsuccess handlers we are waiting for. |
| 57 int pending_onsuccess_callbacks_; | 59 int pending_onsuccess_callbacks_; |
| 58 | 60 |
| 59 // Number of items to request in next prefetch. | 61 // Number of items to request in next prefetch. |
| 60 int prefetch_amount_; | 62 int prefetch_amount_; |
| 61 | 63 |
| 62 enum { kPrefetchContinueThreshold = 2 }; | 64 enum { kPrefetchContinueThreshold = 2 }; |
| 63 enum { kMinPrefetchAmount = 5 }; | 65 enum { kMinPrefetchAmount = 5 }; |
| 64 enum { kMaxPrefetchAmount = 100 }; | 66 enum { kMaxPrefetchAmount = 100 }; |
| 65 }; | 67 }; |
| 66 | 68 |
| 69 } // namespace content |
| 70 |
| 67 #endif // CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ | 71 #endif // CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ |
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