ANR backtrace含义

最新推荐文章于 2025-10-20 15:25:11 发布

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最新推荐文章于 2025-10-20 15:25:11 发布 · 1.4k 阅读

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当发生ANR（Application Not Responding）时，系统会发送SIGQUIT信号到问题线程。这一信号导致线程状态被打印，显示为S（睡眠）、D（不可中断的暂停）、R（可运行）、Z（僵尸）或T（停止）。这些状态帮助开发者诊断ANR原因。

在thread_state.h中定义了线程状态，

enum ThreadState {
  //                                   Thread.State   JDWP state
  kTerminated = 66,                 // TERMINATED     TS_ZOMBIE    Thread.run has returned, but Thread* still around
  kRunnable,                        // RUNNABLE       TS_RUNNING   runnable
  kTimedWaiting,                    // TIMED_WAITING  TS_WAIT      in Object.wait() with a timeout
  kSleeping,                        // TIMED_WAITING  TS_SLEEPING  in Thread.sleep()
  kBlocked,                         // BLOCKED        TS_MONITOR   blocked on a monitor
  kWaiting,                         // WAITING        TS_WAIT      in Object.wait()
  kWaitingForGcToComplete,          // WAITING        TS_WAIT      blocked waiting for GC
  kWaitingForCheckPointsToRun,      // WAITING        TS_WAIT      GC waiting for checkpoints to run
  kWaitingPerformingGc,             // WAITING        TS_WAIT      perform