适用于iOS的Google Analytics(分析)中的线程崩溃 [英] Threading crash in Google Analytics for iOS
本文介绍了适用于iOS的Google Analytics(分析)中的线程崩溃的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
使用适用于iOS 3.0.9(通常为3.0.x)的Google Analytics(分析)库,我们会看到很多崩溃,如下面的崩溃.
Using the Google Analytics library for iOS version 3.0.9, (and 3.0.x in general), we see a lot of crashes like the one below.
它们似乎是随机发生的.
They appeared to occur randomly.
Exception Type: SIGBUS
Exception Codes: BUS_ADRALN at 0xe756c0
Crashed Thread: 19
Thread 19 Crashed:
0 libsystem_platform.dylib 0x39e02e18 0x39e01000 + 7704
1 CoreFoundation 0x2bfd0d6f 0x2bf92000 + 257391
2 CoreFoundation 0x2c0716a3 0x2bf92000 + 915107
3 CoreFoundation 0x2c070417 0x2bf92000 + 910359
4 CoreFoundation 0x2bfd4a0b 0x2bf92000 + 272907
5 Communicator 0x00714541 +[GAIUsageTracker trackTarget:action:] + 193
6 Communicator 0x007049b3 -[GAITrackerImpl send:] + 47
7 Communicator 0x00157b8d __66+[xxx]_block_invoke (xxx.m:305)
8 libdispatch.dylib 0x39ca58cb 0x39ca4000 + 6347
9 libdispatch.dylib 0x39caeda3 0x39ca4000 + 44451
10 libdispatch.dylib 0x39cafcd7 0x39ca4000 + 48343
11 libsystem_pthread.dylib 0x39e06e31 0x39e06000 + 3633
推荐答案
事实证明,GAI库并不像它声称的那样具有线程安全性.我们可以通过序列化呼叫来解决Google Analytics(分析)崩溃的问题.
It turns out that the GAI library is not as thread-safe as it claims. We were able to fix our Google Analytics crashes by serializing the calls.
(void (^)(void))block = {
// your analytics call, eg
[[[GAI sharedInstance] defaultTracker] send:....];
};
static dispatch_queue_t theQueue;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
theQueue = dispatch_queue_create("Analytics Queue", DISPATCH_QUEUE_SERIAL);
});
dispatch_async(theQueue, block);
因此,对跟踪器的所有调用都在序列化到同一队列(上面的"theQueue")的代码块中执行,这强制一次仅执行一个代码块.
So all calls to the tracker are executed in code blocks serialized on the same queue ("theQueue" above), which forces only one code block to execute at a time.
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