[jira] [Created] (WEEX-96) Timer exposed on JSContext can not clear and it has potential crash switching globalQueue

["xingZhang (JIRA)" <ji...@apache.org>]

xingZhang created WEEX-96:
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             Summary: Timer exposed on JSContext can not clear and it has potential crash switching globalQueue
                 Key: WEEX-96
                 URL: https://issues.apache.org/jira/browse/WEEX-96
             Project: Weex
          Issue Type: Bug
            Reporter: xingZhang
            Assignee: Adam Feng
            Priority: Critical



1. timer can not be clear
    As the WXJSCoreBridge file  in [line 544](https://github.com/apache/incubator-weex/blob/master/ios/sdk/WeexSDK/Sources/Bridge/WXJSCoreBridge.m#L544)  shows the code, the appId is a string , so it will never be cleared.

2. timer execute js function in global queue may have potential crash, it had better execution in current thread.
    WXJSCoreBridge  https://github.com/apache/incubator-weex/blob/master/ios/sdk/WeexSDK/Sources/Bridge/WXJSCoreBridge.m#L535

3. timerId will always be 1, not auto-increment as the count of timer increasing
https://github.com/apache/incubator-weex/blob/master/ios/sdk/WeexSDK/Sources/Bridge/WXJSCoreBridge.m#L513





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