Matrix IO检测：只hook主线程IO的限制去掉之后，触发ANR

描述

 int ProxyOpen(const char *pathname, int flags, mode_t mode) {
            if(!IsMainThread() && !ignore_main_thread_limit) {
                return original_open(pathname, flags, mode);
            }

            int ret = original_open(pathname, flags, mode);

            if (ret != -1) {
                    DoProxyOpenLogic(pathname, flags, mode, ret, IsMainThread());
            }

            return ret;
        }

贡献者指南

技术栈

androidjavacpp

领域

mobileperformance

议题类型

bug

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

3

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

1-3 hours

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

stale

清晰度议题是否清楚说明期望改动、验收标准和下一步。

mostly clear

前置要求

Android threading basicsC/C++ IO operationsMatrix IO detection module

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

30

研究方向

Investigate the reason why `small buffer` and `repeat read` detections also need to be limited to the main thread. Look into the `DoProxyOpenLogic` function and the original implementation that introduced `ignore main thread limit`. Check the Matrix IO detection source code and any related issues or pull requests for context. The fix may involve re adding the main thread check for these specific detections or understanding why it was removed.