我的应用程序广泛使用UIWebViews，因为它本质上是一个基于WebView的应用程序。
在应用程序的左侧，我有一个滑出菜单，类似于Facebook和Path应用程序。选择其中一个表行将重新滑入主Web视图并加载URL。
我看过Webthread中WebCore的随机崩溃，但我根本无法理解如何解决它。我测试了僵尸和内存分配，但应用程序始终保持在3-4MB的实时字节内。
我不知道它是否相关，但是当webview加载其页面时，存在重要的“钩子”。例如，在shouldStartLoad中，我检查某些URL，然后在页面上调用JS函数。我不知道这是否会导致崩溃。
崩溃日志显示webcore崩溃的不同区域。我在下面添加了一些最新的变种，但我不确定这些是所有可能的变种。
简而言之，什么是WebCore崩溃？这是UIWebView中的一个我无法做任何事情的错误吗？谢谢！
Thread 2 name: WebThread
Thread 2 Crashed:
0 WebCore 0x32c540c0 WebCore::Document::body() const + 4
1 WebCore 0x32d04052 WebCore::CachedResourceLoader::preload(WebCore::CachedResource::Type, WTF::String const&, WTF::String const&, bool) + 18
2 WebCore 0x32d03ebe WebCore::HTMLPreloadScanner::processToken() + 1510
3 WebCore 0x32d03872 WebCore::HTMLPreloadScanner::scan() + 42
4 WebCore 0x32cebc24 WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&) + 92
5 WebCore 0x32cbce20 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, int, bool) + 200
6 WebCore 0x32ceb8d0 WebCore::DocumentWriter::addData(char const*, int, bool) + 48
7 WebCore 0x32ce5c3e WebCore::DocumentLoader::commitData(char const*, int) + 122
8 WebKit 0x358cbc9a -[WebHTMLRepresentation receivedData:withDataSource:] + 158
9 WebKit 0x358cbb10 -[WebDataSource(WebInternal) _receivedData:] + 164
10 WebKit 0x358cba48 WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) + 100
11 WebCore 0x32ce2a48 WebCore::DocumentLoader::commitLoad(char const*, int) + 120
12 WebCore 0x32ce29b4 WebCore::DocumentLoader::receivedData(char const*, int) + 72
13 WebCore 0x32ce25da WebCore::ResourceLoader::didReceiveData(char const*, int, long long, bool) + 34
14 WebCore 0x32ce2566 WebCore::MainResourceLoader::didReceiveData(char const*, int, long long, bool) + 474
15 WebCore 0x32ce22b2 WebCore::ResourceLoader::didReceiveData(WebCore::ResourceHandle*, char const*, int, int) + 42
16 WebCore 0x32ce2234 WebCore::ResourceHandle::handleDataArray(__CFArray const*) + 212
17 WebCore 0x32ce2156 WebCore::didReceiveDataArray(_CFURLConnection*, __CFArray const*, void const*) + 34
18 CFNetwork 0x370dd058 URLConnectionClient::_clientDidReceiveData(__CFArray const*, URLConnectionClient::ClientConnectionEventQueue*) + 220
19 CFNetwork 0x370434b0 URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XClientEvent, XClientEventParams>*, long) + 436
20 CFNetwork 0x3704319c URLConnectionClient::processEvents() + 100
21 CFNetwork 0x370430d2 MultiplexerSource::perform() + 150
22 CoreFoundation 0x3738aacc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
23 CoreFoundation 0x3738a32e __CFRunLoopDoSources0 + 358
24 CoreFoundation 0x3738903e __CFRunLoopRun + 646
25 CoreFoundation 0x3730c49e CFRunLoopRunSpecific + 294
26 CoreFoundation 0x3730c366 CFRunLoopRunInMode + 98
27 WebCore 0x32cb5c9c RunWebThread(void*) + 396
28 libsystem_c.dylib 0x33c2b72e _pthread_start + 314
29 libsystem_c.dylib 0x33c2b5e8 thread_start + 0
OR
Thread 2 name: WebThread
Thread 2 Crashed:
0 WebCore 0x32cbe120 WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) + 312
1 WebCore 0x32cebc66 WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&) + 158
2 WebCore 0x32cbce20 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, int, bool) + 200
3 WebCore 0x32ceb8d0 WebCore::DocumentWriter::addData(char const*, int, bool) + 48
4 WebCore 0x32ce5c3e WebCore::DocumentLoader::commitData(char const*, int) + 122
5 WebKit 0x358cbc9a -[WebHTMLRepresentation receivedData:withDataSource:] + 158
6 WebKit 0x358cbb10 -[WebDataSource(WebInternal) _receivedData:] + 164
7 WebKit 0x358cba48 WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) + 100
8 WebCore 0x32ce2a48 WebCore::DocumentLoader::commitLoad(char const*, int) + 120
9 WebCore 0x32ce29b4 WebCore::DocumentLoader::receivedData(char const*, int) + 72
10 WebCore 0x32ce25da WebCore::ResourceLoader::didReceiveData(char const*, int, long long, bool) + 34
11 WebCore 0x32ce2566 WebCore::MainResourceLoader::didReceiveData(char const*, int, long long, bool) + 474
12 WebCore 0x32ce22b2 WebCore::ResourceLoader::didReceiveData(WebCore::ResourceHandle*, char const*, int, int) + 42
13 WebCore 0x32ce2276 WebCore::ResourceHandle::handleDataArray(__CFArray const*) + 278
14 WebCore 0x32ce2156 WebCore::didReceiveDataArray(_CFURLConnection*, __CFArray const*, void const*) + 34
15 CFNetwork 0x370dd058 URLConnectionClient::_clientDidReceiveData(__CFArray const*, URLConnectionClient::ClientConnectionEventQueue*) + 220
16 CFNetwork 0x370434b0 URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XClientEvent, XClientEventParams>*, long) + 436
17 CFNetwork 0x37043592 URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XClientEvent, XClientEventParams>*, long) + 662
18 CFNetwork 0x3704319c URLConnectionClient::processEvents() + 100
19 CFNetwork 0x370430d2 MultiplexerSource::perform() + 150
20 CoreFoundation 0x3738aacc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
21 CoreFoundation 0x3738a298 __CFRunLoopDoSources0 + 208
22 CoreFoundation 0x3738903e __CFRunLoopRun + 646
23 CoreFoundation 0x3730c49e CFRunLoopRunSpecific + 294
24 CoreFoundation 0x3730c366 CFRunLoopRunInMode + 98
25 WebCore 0x32cb5c9c RunWebThread(void*) + 396
26 libsystem_c.dylib 0x33c2b72e _pthread_start + 314
27 libsystem_c.dylib 0x33c2b5e8 thread_start + 0
OR
Thread 2 name: WebThread
Thread 2 Crashed:
0 JavaScriptCore 0x35653c7c WTF::fastFree(void*) + 80
1 WebCore 0x32d064b4 WebCore::SegmentedString::prepend(WebCore::SegmentedSubstring const&) + 136
2 WebCore 0x32d0640e WebCore::SegmentedString::prepend(WebCore::SegmentedString const&) + 66
3 WebCore 0x32d047a8 WebCore::(anonymous namespace)::unconsumeCharacters(WebCore::SegmentedString&, WTF::Vector<unsigned short, 10ul> const&) + 188
4 WebCore 0x32cf023e WebCore::consumeHTMLEntity(WebCore::SegmentedString&, WTF::Vector<unsigned short, 16ul>&, bool&, unsigned short) + 1850
5 WebCore 0x32cef9e4 WebCore::HTMLTokenizer::processEntity(WebCore::SegmentedString&) + 40
6 WebCore 0x32cbebe8 WebCore::HTMLTokenizer::nextToken(WebCore::SegmentedString&, WebCore::HTMLToken&) + 1232
7 WebCore 0x32d03894 WebCore::HTMLPreloadScanner::scan() + 76
8 WebCore 0x32cebc24 WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&) + 92
9 WebCore 0x32cbce20 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, int, bool) + 200
10 WebCore 0x32ceb8d0 WebCore::DocumentWriter::addData(char const*, int, bool) + 48
11 WebCore 0x32ce5c3e WebCore::DocumentLoader::commitData(char const*, int) + 122
12 WebKit 0x358cbc9a -[WebHTMLRepresentation receivedData:withDataSource:] + 158
13 WebKit 0x358cbb10 -[WebDataSource(WebInternal) _receivedData:] + 164
14 WebKit 0x358cba48 WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) + 100
15 WebCore 0x32ce2a48 WebCore::DocumentLoader::commitLoad(char const*, int) + 120
16 WebCore 0x32ce29b4 WebCore::DocumentLoader::receivedData(char const*, int) + 72
17 WebCore 0x32ce25da WebCore::ResourceLoader::didReceiveData(char const*, int, long long, bool) + 34
18 WebCore 0x32ce2566 WebCore::MainResourceLoader::didReceiveData(char const*, int, long long, bool) + 474
19 WebCore 0x32ce22b2 WebCore::ResourceLoader::didReceiveData(WebCore::ResourceHandle*, char const*, int, int) + 42
20 WebCore 0x32ce2276 WebCore::ResourceHandle::handleDataArray(__CFArray const*) + 278
21 WebCore 0x32ce2156 WebCore::didReceiveDataArray(_CFURLConnection*, __CFArray const*, void const*) + 34
22 CFNetwork 0x370dd058 URLConnectionClient::_clientDidReceiveData(__CFArray const*, URLConnectionClient::ClientConnectionEventQueue*) + 220
23 CFNetwork 0x370434b0 URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo<XClientEvent, XClientEventParams>*, long) + 436
24 CFNetwork 0x3704319c URLConnectionClient::processEvents() + 100
25 CFNetwork 0x370430d2 MultiplexerSource::perform() + 150
26 CoreFoundation 0x3738aacc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
27 CoreFoundation 0x3738a32e __CFRunLoopDoSources0 + 358
28 CoreFoundation 0x3738903e __CFRunLoopRun + 646
29 CoreFoundation 0x3730c49e CFRunLoopRunSpecific + 294
30 CoreFoundation 0x3730c366 CFRunLoopRunInMode + 98
31 WebCore 0x32cb5c9c RunWebThread(void*) + 396
32 libsystem_c.dylib 0x33c2b72e _pthread_start + 314
33 libsystem_c.dylib 0x33c2b5e8 thread_start + 0
答案 0 :(得分：0)
WebThread由WebKit管理，没有开发人员拥有的代码在那里运行。我想知道，它是否可以在较新的iOS固件上重现？你可以就此发表雷达报告。