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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 #include "content/common/indexed_db/indexed_db_dispatcher.h" | 5 #include "content/common/indexed_db/indexed_db_dispatcher.h" |
6 | 6 |
7 #include "base/lazy_instance.h" | 7 #include "base/lazy_instance.h" |
8 #include "base/threading/thread_local.h" | 8 #include "base/threading/thread_local.h" |
9 #include "content/common/child_thread.h" | 9 #include "content/common/child_thread.h" |
10 #include "content/common/indexed_db/indexed_db_messages.h" | 10 #include "content/common/indexed_db/indexed_db_messages.h" |
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31 using WebKit::WebIDBDatabaseError; | 31 using WebKit::WebIDBDatabaseError; |
32 using WebKit::WebIDBTransaction; | 32 using WebKit::WebIDBTransaction; |
33 using WebKit::WebIDBTransactionCallbacks; | 33 using WebKit::WebIDBTransactionCallbacks; |
34 using webkit_glue::WorkerTaskRunner; | 34 using webkit_glue::WorkerTaskRunner; |
35 | 35 |
36 static base::LazyInstance<ThreadLocalPointer<IndexedDBDispatcher> >::Leaky | 36 static base::LazyInstance<ThreadLocalPointer<IndexedDBDispatcher> >::Leaky |
37 g_idb_dispatcher_tls = LAZY_INSTANCE_INITIALIZER; | 37 g_idb_dispatcher_tls = LAZY_INSTANCE_INITIALIZER; |
38 | 38 |
39 namespace { | 39 namespace { |
40 | 40 |
| 41 IndexedDBDispatcher* const kHasBeenDeleted = |
| 42 reinterpret_cast<IndexedDBDispatcher*>(0x1); |
| 43 |
41 int32 CurrentWorkerId() { | 44 int32 CurrentWorkerId() { |
42 return WorkerTaskRunner::Instance()->CurrentWorkerId(); | 45 return WorkerTaskRunner::Instance()->CurrentWorkerId(); |
43 } | 46 } |
44 | 47 |
45 } // unnamed namespace | 48 } // unnamed namespace |
46 | 49 |
47 const size_t kMaxIDBValueSizeInBytes = 64 * 1024 * 1024; | 50 const size_t kMaxIDBValueSizeInBytes = 64 * 1024 * 1024; |
48 | 51 |
49 IndexedDBDispatcher::IndexedDBDispatcher() { | 52 IndexedDBDispatcher::IndexedDBDispatcher() { |
50 g_idb_dispatcher_tls.Pointer()->Set(this); | 53 g_idb_dispatcher_tls.Pointer()->Set(this); |
51 } | 54 } |
52 | 55 |
53 IndexedDBDispatcher::~IndexedDBDispatcher() { | 56 IndexedDBDispatcher::~IndexedDBDispatcher() { |
54 g_idb_dispatcher_tls.Pointer()->Set(NULL); | 57 g_idb_dispatcher_tls.Pointer()->Set(kHasBeenDeleted); |
55 } | 58 } |
56 | 59 |
57 IndexedDBDispatcher* IndexedDBDispatcher::ThreadSpecificInstance() { | 60 IndexedDBDispatcher* IndexedDBDispatcher::ThreadSpecificInstance() { |
| 61 if (g_idb_dispatcher_tls.Pointer()->Get() == kHasBeenDeleted) { |
| 62 NOTREACHED() << "Re-instantiating TLS IndexedDBDispatcher."; |
| 63 g_idb_dispatcher_tls.Pointer()->Set(NULL); |
| 64 } |
58 if (g_idb_dispatcher_tls.Pointer()->Get()) | 65 if (g_idb_dispatcher_tls.Pointer()->Get()) |
59 return g_idb_dispatcher_tls.Pointer()->Get(); | 66 return g_idb_dispatcher_tls.Pointer()->Get(); |
60 | 67 |
61 IndexedDBDispatcher* dispatcher = new IndexedDBDispatcher; | 68 IndexedDBDispatcher* dispatcher = new IndexedDBDispatcher; |
62 if (WorkerTaskRunner::Instance()->CurrentWorkerId()) | 69 if (WorkerTaskRunner::Instance()->CurrentWorkerId()) |
63 webkit_glue::WorkerTaskRunner::Instance()->AddStopObserver(dispatcher); | 70 webkit_glue::WorkerTaskRunner::Instance()->AddStopObserver(dispatcher); |
64 return dispatcher; | 71 return dispatcher; |
65 } | 72 } |
66 | 73 |
67 void IndexedDBDispatcher::OnWorkerRunLoopStopped() { | 74 void IndexedDBDispatcher::OnWorkerRunLoopStopped() { |
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706 } | 713 } |
707 | 714 |
708 void IndexedDBDispatcher::ResetCursorPrefetchCaches(int32 exception_cursor_id) { | 715 void IndexedDBDispatcher::ResetCursorPrefetchCaches(int32 exception_cursor_id) { |
709 typedef std::map<int32, RendererWebIDBCursorImpl*>::iterator Iterator; | 716 typedef std::map<int32, RendererWebIDBCursorImpl*>::iterator Iterator; |
710 for (Iterator i = cursors_.begin(); i != cursors_.end(); ++i) { | 717 for (Iterator i = cursors_.begin(); i != cursors_.end(); ++i) { |
711 if (i->first == exception_cursor_id) | 718 if (i->first == exception_cursor_id) |
712 continue; | 719 continue; |
713 i->second->ResetPrefetchCache(); | 720 i->second->ResetPrefetchCache(); |
714 } | 721 } |
715 } | 722 } |
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