xCrash ANR 兼容性测试
| Target | Steps |
|---|---|
| 目的 | 测试 xCrash 捕获 ANR 的能力在各个 Android 版本上的兼容性 |
| 平台 | WeTest - 兼容性测试 - 选取 Android 5.1 至 Android 12 共 8 个机型 |
| Apk | Viomi Fridge Launcher V2.1.2 |
| xCrash Version | 3.0.0 |
| ANR 捕获机制 | 注册 SIGQUIT 信号处理器，Runtime::DumpForSigQuit 打印调用栈，一段时间内轮询 ActivityManager.getProcessesInErrorState 是否为 ProcessErrorStateInfo.NOT_RESPONDING 来判断当前 APP 是否发生 ANR |
| 测试流程 | APP 启动后 5s 初始化 xCrash ANR，3s 后启动 AnrService，通过 startService 超时来触发 ANR |
| 日志分析 | 将日志文件逐个下载，放到 LogPad 上过滤出 tag 为 xcrash_dumper 的条目 |
详细的日志埋点
tag 为 xcrash_dumper 为插入的日志埋点
fun initXCrash() {
mainHandler.postDelayed({
XCrash.init(app, XCrash.InitParameters().apply {
setAnrCallback { logPath, emergency ->
Log.d("xcrash_dumper", "ANR Callback, $emergency, $logPath") // 自定义 ANR 回调
}
})
mainHandler.postDelayed({
try {
val nativeHandlerClz = Class.forName("xcrash.NativeHandler")
val instanceField = nativeHandlerClz.getDeclaredField("instance")
instanceField.isAccessible = true
val nativeHandler = instanceField.get(nativeHandlerClz)
val anrTimeoutField = nativeHandlerClz.getDeclaredField("anrTimeoutMs")
anrTimeoutField.isAccessible = true
anrTimeoutField.set(nativeHandler, 20 * 1000L)
// 判断 ANR 的阈值校正为 20s，默认 15s 太短有时 ANR 对话框还没弹出，APP 不处于 NOT_RESPONDING 状态
Log.d("xcrash_dumper", "NativeHandler.anrTimeoutMs = 20s")
} catch (e: Exception) {
Log.e("xcrash_dumper", "fail to change NativeHandler.anrTimeoutMs", e)
}
app.startService(Intent(app, AnrService::class.java))
Log.d("xcrash_dumper", "AnrService was started") // 启动 Service 超时
}, 3 * 1000L)
}, 5 * 1000L)
}
class AnrService {
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
val tombstones = File(applicationContext.filesDir, "tombstones")
var anrs = tombstones.listFiles { _, name -> name.endsWith("anr.xcrash") }
log("AnrService, delete ${anrs?.size} anr logs before anr") // 清理 tombstones 目录
anrs.forEach { it.deleteSafely() }
Thread.sleep(30 * 1000L) // 触发 ANR
anrs = tombstones.listFiles { _, name -> name.endsWith("anr.xcrash") }
// 看看有没 ANR 日志，没有的话说明没能捕获到 ANR
log("AnrService, now ${System.currentTimeMillis() / 1000L}, found anr logs, ${anrs?.joinToString { it.name }}")
return super.onStartCommand(intent, flags, startId)
}
}class XCrash {
public static synchronized int init(Context ctx, InitParameters params) {
if (XCrash.initialized) {
return Errno.OK;
}
XCrash.initialized = true;
if (ctx == null) {
return Errno.CONTEXT_IS_NULL;
}
Log.d("xcrash_dumper", "xcrash start"); // xCrash 初始化
// ...
//init native crash handler / ANR handler (API level >= 21)
int r = Errno.OK;
if (params.enableNativeCrashHandler || (params.enableAnrHandler && Build.VERSION.SDK_INT >= 21)) {
r = NativeHandler.getInstance().initialize(
ctx,
params.libLoader,
appId,
params.appVersion,
params.logDir,
params.enableNativeCrashHandler,
params.nativeRethrow,
params.nativeLogcatSystemLines,
params.nativeLogcatEventsLines,
params.nativeLogcatMainLines,
params.nativeDumpElfHash,
params.nativeDumpMap,
params.nativeDumpFds,
params.nativeDumpNetworkInfo,
params.nativeDumpAllThreads,
params.nativeDumpAllThreadsCountMax,
params.nativeDumpAllThreadsWhiteList,
params.nativeCallback,
params.enableAnrHandler && Build.VERSION.SDK_INT >= 21,
params.anrRethrow,
params.anrCheckProcessState,
params.anrLogcatSystemLines,
params.anrLogcatEventsLines,
params.anrLogcatMainLines,
params.anrDumpFds,
params.anrDumpNetworkInfo,
params.anrCallback);
}
//maintain tombstone and placeholder files in a background thread with some delay
FileManager.getInstance().maintain();
return r;
}
}
class NativeHandler {
int initialize(...) {
//load lib
if (libLoader == null) {
try {
System.loadLibrary("xcrash");
} catch (Throwable e) {
XCrash.getLogger().e(Util.TAG, "NativeHandler System.loadLibrary failed", e);
return Errno.LOAD_LIBRARY_FAILED;
}
} else {
try {
libLoader.loadLibrary("xcrash");
} catch (Throwable e) {
XCrash.getLogger().e(Util.TAG, "NativeHandler ILibLoader.loadLibrary failed", e);
return Errno.LOAD_LIBRARY_FAILED;
}
}
this.ctx = ctx;
this.crashRethrow = crashRethrow;
this.crashCallback = crashCallback;
this.anrEnable = anrEnable;
this.anrCheckProcessState = anrCheckProcessState;
this.anrCallback = anrCallback;
this.anrTimeoutMs = anrRethrow ? 15 * 1000 : 30 * 1000; //setting rethrow to "false" is NOT recommended
Log.d("xcrash_dumper", "xcrash native start"); // xCrash native 初始化
//init native lib
try {
int r = nativeInit(
Build.VERSION.SDK_INT,
Build.VERSION.RELEASE,
Util.getAbiList(),
Build.MANUFACTURER,
Build.BRAND,
Util.getMobileModel(),
Build.FINGERPRINT,
appId,
appVersion,
ctx.getApplicationInfo().nativeLibraryDir,
logDir,
crashEnable,
crashRethrow,
crashLogcatSystemLines,
crashLogcatEventsLines,
crashLogcatMainLines,
crashDumpElfHash,
crashDumpMap,
crashDumpFds,
crashDumpNetworkInfo,
crashDumpAllThreads,
crashDumpAllThreadsCountMax,
crashDumpAllThreadsWhiteList,
anrEnable,
anrRethrow,
anrLogcatSystemLines,
anrLogcatEventsLines,
anrLogcatMainLines,
anrDumpFds,
anrDumpNetworkInfo);
if (r != 0) {
XCrash.getLogger().e(Util.TAG, "NativeHandler init failed");
return Errno.INIT_LIBRARY_FAILED;
}
initNativeLibOk = true;
Log.d("xcrash_dumper", "xcrash native end"); // xCrash native 初始化结束
return 0; //OK
} catch (Throwable e) {
XCrash.getLogger().e(Util.TAG, "NativeHandler init failed", e);
return Errno.INIT_LIBRARY_FAILED;
}
}
}static jint xc_jni_init(...)
{
//...
if(trace_enable)
{
//trace init
XCD_LOG_DEBUG("ANR native start"); // xcrash anr 初始化
r_trace = xc_trace_init(env,
trace_rethrow ? 1 : 0,
(unsigned int)trace_logcat_system_lines,
(unsigned int)trace_logcat_events_lines,
(unsigned int)trace_logcat_main_lines,
trace_dump_fds ? 1 : 0,
trace_dump_network_info ? 1 : 0);
}
//...
}
int xc_trace_init(JNIEnv *env,
int rethrow,
unsigned int logcat_system_lines,
unsigned int logcat_events_lines,
unsigned int logcat_main_lines,
int dump_fds,
int dump_network_info)
{
int r;
pthread_t thd;
//capture SIGQUIT only for ART
if(xc_common_api_level < 21) return 0;
//is Android Lollipop (5.x)?
xc_trace_is_lollipop = ((21 == xc_common_api_level || 22 == xc_common_api_level) ? 1 : 0);
xc_trace_dump_status = XC_TRACE_DUMP_NOT_START;
xc_trace_rethrow = rethrow;
xc_trace_logcat_system_lines = logcat_system_lines;
xc_trace_logcat_events_lines = logcat_events_lines;
xc_trace_logcat_main_lines = logcat_main_lines;
xc_trace_dump_fds = dump_fds;
xc_trace_dump_network_info = dump_network_info;
//init for JNI callback
xc_trace_init_callback(env);
//create event FD
if(0 > (xc_trace_notifier = eventfd(0, EFD_CLOEXEC))) return XCC_ERRNO_SYS;
//register signal handler
if(0 != (r = xcc_signal_trace_register(xc_trace_handler))) goto err2;
XCD_LOG_DEBUG("ANR native register SIGQUIT"); // 为捕获 ANR 注册 SIGQUIT 信号处理器并启动 xc_trace_dumper 线程
//create thread for dump trace
if(0 != (r = pthread_create(&thd, NULL, xc_trace_dumper, NULL))) goto err1;
return 0;
err1:
xcc_signal_trace_unregister();
err2:
close(xc_trace_notifier);
xc_trace_notifier = -1;
return r;
}
static void xc_trace_handler(int sig, siginfo_t *si, void *uc)
{
// 信号处理程序收到 SIGQUIT(3)，唤醒 xc_trace_dumper 线程
XCD_LOG_DEBUG("SIGQUIT handler get %d, %d", sig, xc_trace_notifier);
uint64_t data;
(void)sig;
(void)si;
(void)uc;
if(xc_trace_notifier >= 0)
{
data = 1;
XCC_UTIL_TEMP_FAILURE_RETRY(write(xc_trace_notifier, &data, sizeof(data)));
}
}
static void *xc_trace_dumper(void *arg)
{
JNIEnv *env = NULL;
uint64_t data;
uint64_t trace_time;
int fd;
struct timeval tv;
char pathname[1024];
jstring j_pathname;
(void)arg;
pthread_detach(pthread_self());
JavaVMAttachArgs attach_args = {
.version = XC_JNI_VERSION,
.name = "xcrash_trace_dp",
.group = NULL
};
if(JNI_OK != (*xc_common_vm)->AttachCurrentThread(xc_common_vm, &env, &attach_args)) goto exit;
while(1)
{
//block here, waiting for sigquit
XCC_UTIL_TEMP_FAILURE_RETRY(read(xc_trace_notifier, &data, sizeof(data)));
XCD_LOG_DEBUG("ANR native dumper awaken"); // xc_trace_dumper 线程被唤醒，说明收到了 SIGQUIT
//check if process already crashed
if(xc_common_native_crashed || xc_common_java_crashed) break;
//trace time
if(0 != gettimeofday(&tv, NULL)) break;
trace_time = (uint64_t)(tv.tv_sec) * 1000 * 1000 + (uint64_t)tv.tv_usec;
//Keep only one current trace.
if(0 != xc_trace_logs_clean()) continue;
//create and open log file
if((fd = xc_common_open_trace_log(pathname, sizeof(pathname), trace_time)) < 0) continue;
//write header info
if(0 != xc_trace_write_header(fd, trace_time)) goto end;
//write trace info from ART runtime
if(0 != xcc_util_write_format(fd, XCC_UTIL_THREAD_SEP"Cmd line: %s\n", xc_common_process_name)) goto end;
if(0 != xcc_util_write_str(fd, "Mode: ART DumpForSigQuit\n")) goto end;
if(0 != xc_trace_load_symbols())
{
if(0 != xcc_util_write_str(fd, "Failed to load symbols.\n")) goto end;
goto skip;
}
if(0 != xc_trace_check_address_valid())
{
if(0 != xcc_util_write_str(fd, "Failed to check runtime address.\n")) goto end;
goto skip;
}
if(dup2(fd, STDERR_FILENO) < 0)
{
if(0 != xcc_util_write_str(fd, "Failed to duplicate FD.\n")) goto end;
goto skip;
}
XCD_LOG_DEBUG("read header from %s", pathname); // 首先写入 header，这里从日志文件里打印出来
print_file(pathname);
xc_trace_dump_status = XC_TRACE_DUMP_ON_GOING;
if(sigsetjmp(jmpenv, 1) == 0)
{
if(xc_trace_is_lollipop)
xc_trace_libart_dbg_suspend();
// 利用 Runtime::DumpForSigQuit 打印调用栈
XCD_LOG_DEBUG("before dump");
xc_trace_libart_runtime_dump(*xc_trace_libart_runtime_instance, xc_trace_libcpp_cerr);
XCD_LOG_DEBUG("after dump, print log file");
if(xc_trace_is_lollipop)
xc_trace_libart_dbg_resume();
}
else
{
fflush(NULL);
XCD_LOG_WARN("longjmp to skip dumping trace\n");
}
dup2(xc_common_fd_null, STDERR_FILENO);
skip:
if(0 != xcc_util_write_str(fd, "\n"XCC_UTIL_THREAD_END"\n")) goto end;
//write other info
if(0 != xcc_util_record_logcat(fd, xc_common_process_id, xc_common_api_level, xc_trace_logcat_system_lines, xc_trace_logcat_events_lines, xc_trace_logcat_main_lines)) goto end;
XCD_LOG_DEBUG("logcat added"); // 收集 logcat 日志
if(xc_trace_dump_fds)
if(0 != xcc_util_record_fds(fd, xc_common_process_id)) goto end;
if(xc_trace_dump_network_info)
if(0 != xcc_util_record_network_info(fd, xc_common_process_id, xc_common_api_level)) goto end;
if(0 != xcc_meminfo_record(fd, xc_common_process_id)) goto end;
XCD_LOG_DEBUG("meminfo added"); // 收集内存相关信息
end:
//close log file
xc_common_close_trace_log(fd);
XCD_LOG_DEBUG("close log fd"); // 日志文件写入完毕
//rethrow SIGQUIT to ART Signal Catcher
if(xc_trace_rethrow && (XC_TRACE_DUMP_ART_CRASH != xc_trace_dump_status)) xc_trace_send_sigquit();
xc_trace_dump_status = XC_TRACE_DUMP_END;
XCD_LOG_DEBUG("rethrow SIGQUIT"); // 重新抛出 SIGQUIT，不中断系统的 ANR 流程
//JNI callback
//Do we need to implement an emergency buffer for disk exhausted?
if(NULL == xc_trace_cb_method) continue;
if(NULL == (j_pathname = (*env)->NewStringUTF(env, pathname))) continue;
(*env)->CallStaticVoidMethod(env, xc_common_cb_class, xc_trace_cb_method, j_pathname, NULL);
XCD_LOG_DEBUG("JNI callback %s", pathname); // 执行 NativeHandler.traceCallback
XC_JNI_IGNORE_PENDING_EXCEPTION();
(*env)->DeleteLocalRef(env, j_pathname);
}
(*xc_common_vm)->DetachCurrentThread(xc_common_vm);
exit:
xc_trace_notifier = -1;
close(xc_trace_notifier);
return NULL;
}class NativeHandler {
private static void traceCallback(String logPath, String emergency) {
String tag = "xcrash_dumper";
Log.d(tag, String.format("traceCallback %s %s", emergency, logPath)); // 记录 callback 调用
if (TextUtils.isEmpty(logPath)) {
return;
}
//append memory info
TombstoneManager.appendSection(logPath, "memory info", Util.getProcessMemoryInfo());
Log.d(tag, "memory info appended"); // 添加额外信息
//append background / foreground
TombstoneManager.appendSection(logPath, "foreground", ActivityMonitor.getInstance().isApplicationForeground() ? "yes" : "no");
Log.d(tag, "background / foreground appended"); // 添加额外信息
//check process ANR state
// 一段时间内轮询 ActivityManager.getProcessesInErrorState 是否为 ProcessErrorStateInfo#NOT_RESPONDING 来判断当前 APP 是否发生 ANR
if (NativeHandler.getInstance().anrCheckProcessState) {
if (!Util.checkProcessAnrState(NativeHandler.getInstance().ctx, NativeHandler.getInstance().anrTimeoutMs)) {
FileManager.getInstance().recycleLogFile(new File(logPath));
Log.d(tag, "not an ANR");
return; //not an ANR
}
}
//delete extra ANR log files
if (!FileManager.getInstance().maintainAnr()) {
return;
}
//rename trace log file to ANR log file
String anrLogPath = logPath.substring(0, logPath.length() - Util.traceLogSuffix.length()) + Util.anrLogSuffix;
File traceFile = new File(logPath);
File anrFile = new File(anrLogPath);
if (!traceFile.renameTo(anrFile)) {
FileManager.getInstance().recycleLogFile(traceFile);
return;
}
// trace.xcrash 和 anr.xcrash 的流程是一样的，通过上面的检查逻辑判断是否为 anr，是的话将后缀改为 anr.xcrash
Log.d(tag, String.format("%s rename to %s", logPath, anrLogPath));
ICrashCallback callback = NativeHandler.getInstance().anrCallback;
if (callback != null) {
try {
callback.onCrash(anrLogPath, emergency);
Log.d(tag, "anr callback invoked"); // 执行用户自定义的回调
} catch (Exception e) {
Log.e(tag, e.getMessage(), e);
XCrash.getLogger().w(Util.TAG, "NativeHandler ANR callback.onCrash failed", e);
}
}
}
}
class Util {
static boolean checkProcessAnrState(Context ctx, long timeoutMs) {
ActivityManager am = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);
if (am == null) return false;
int pid = android.os.Process.myPid();
long poll = timeoutMs / 500;
for (int i = 0; i < poll; i++) {
List<ActivityManager.ProcessErrorStateInfo> processErrorList = am.getProcessesInErrorState();
if (processErrorList != null) {
for (ActivityManager.ProcessErrorStateInfo errorStateInfo : processErrorList) {
if (errorStateInfo.pid == pid) {
// 轮询检查当前进程是否处于 NOT_RESPONDING 状态，这个轮询时间很关键
Log.d("xcrash_dumper", String.format("process state: %s", errorStateInfo.condition));
}
if (errorStateInfo.pid == pid && errorStateInfo.condition == ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING) {
return true;
}
}
}
try {
Thread.sleep(500);
} catch (Exception ignored) {
}
}
return false;
}
}PIXEL 4 - Android 12
主线程阻塞 20s 后进入 ANR 处理流程，收到 SIGQUIT，0.5s 后完成 ANR 日志重启抛出 SIGQUIT，4s 后 APP 进入 NOT_RESPONDING 状态
11-25 11:27:26.760 3215 3215 D xcrash_dumper: xcrash start
11-25 11:27:26.770 3215 3215 D xcrash_dumper: xcrash native start
11-25 11:27:26.771 3215 3215 D xcrash_dumper: ANR native start
11-25 11:27:26.771 3215 3215 D xcrash_dumper: ANR native register SIGQUIT
11-25 11:27:26.772 3215 3215 D xcrash_dumper: xcrash native end
11-25 11:27:29.775 3215 3215 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-25 11:27:29.779 3215 3215 D xcrash_dumper: AnrService was started
11-25 11:27:29.781 3215 3215 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 11:27:50.178 3215 3215 D xcrash_dumper: SIGQUIT handler get 3, 235
11-25 11:27:50.178 3215 4153 D xcrash_dumper: ANR native dumper awaken
11-25 11:27:50.205 3215 4153 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:27:50.205 3215 4153 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Crash type: 'anr'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Start time: '2021-11-25T11:27:26.770+0800'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Crash time: '2021-11-25T11:27:50.178+0800'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Rooted: 'No'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: API level: '30'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: OS version: '11'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Kernel version: 'Linux version 4.14.204-g074de30eab1a-ab7083077 #1 SMP PREEMPT Thu Jan 14 21:14:19 UTC 2021 (armv8l)'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Manufacturer: 'Google'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Brand: 'google'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Model: 'Pixel 4'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Build fingerprint: 'google/flame/flame:S/SPP1.210122.020.A3/7145137:user/release-keys'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: ABI: 'arm'
11-25 11:27:50.205 3215 4153 D xcrash_dumper: pid: 3215 >>> com.viomi.fridge.vertical <<<
11-25 11:27:50.205 3215 4153 D xcrash_dumper:
11-25 11:27:50.205 3215 4153 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 11:27:50.205 3215 4153 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 11:27:50.205 3215 4153 D xcrash_dumper: before dump
11-25 11:27:50.563 3215 4153 D xcrash_dumper: after dump, print log file
11-25 11:27:50.630 3215 4153 D xcrash_dumper: logcat added
11-25 11:27:50.683 3215 4153 D xcrash_dumper: meminfo added
11-25 11:27:50.683 3215 4153 D xcrash_dumper: close log fd
11-25 11:27:50.684 3215 4153 D xcrash_dumper: rethrow SIGQUIT
11-25 11:27:50.684 3215 4153 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:27:50.849 3215 4153 D xcrash_dumper: memory info appended
11-25 11:27:50.849 3215 4153 D xcrash_dumper: background / foreground appended
11-25 11:27:54.360 3215 4153 D xcrash_dumper: process state: 2
11-25 11:27:54.361 3215 4153 D xcrash_dumper: delete anr log file until 10
11-25 11:27:54.362 3215 4153 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:27:54.362 3215 4153 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:27:54.362 3215 4153 D xcrash_dumper: anr callback invoked
11-25 11:27:54.362 3215 4153 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:27:59.784 3215 3215 D xcrash_dumper: AnrService, now 1637810879, found anr logs, tombstone_00001637810870178747_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrashPIXEL 5 - Android 11
主线程阻塞 12s 后进入 ANR 处理流程，收到 SIGQUIT，0.5s 后完成 ANR 日志重启抛出 SIGQUIT，6s 后 APP 进入 NOT_RESPONDING 状态
11-25 15:43:01.820 2668 2668 D xcrash_dumper: xcrash start
11-25 15:43:01.844 2668 2668 D xcrash_dumper: xcrash native start
11-25 15:43:01.845 2668 2668 D xcrash_dumper: ANR native start
11-25 15:43:01.845 2668 2668 D xcrash_dumper: ANR native register SIGQUIT
11-25 15:43:01.846 2668 2668 D xcrash_dumper: xcrash native end
11-25 15:43:04.849 2668 2668 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-25 15:43:04.852 2668 2668 D xcrash_dumper: AnrService was started
11-25 15:43:04.857 2668 2668 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 15:43:16.061 2668 2668 D xcrash_dumper: SIGQUIT handler get 3, 168
11-25 15:43:16.061 2668 3318 D xcrash_dumper: ANR native dumper awaken
11-25 15:43:16.079 2668 3318 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 15:43:16.079 2668 3318 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Crash type: 'anr'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Start time: '2021-11-25T15:43:01.844+0800'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Crash time: '2021-11-25T15:43:16.061+0800'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Rooted: 'No'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: API level: '30'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: OS version: '11'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Kernel version: 'Linux version 4.19.110-g9ceb3bf92e0a-ab6790968 #2 SMP PREEMPT Wed Aug 26 04:14:37 UTC 2020 (armv8l)'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Manufacturer: 'Google'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Brand: 'google'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Model: 'Pixel 5'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Build fingerprint: 'google/redfin/redfin:11/RD1A.200810.022.A4/6835977:user/release-keys'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: ABI: 'arm'
11-25 15:43:16.079 2668 3318 D xcrash_dumper: pid: 2668 >>> com.viomi.fridge.vertical <<<
11-25 15:43:16.079 2668 3318 D xcrash_dumper:
11-25 15:43:16.079 2668 3318 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 15:43:16.079 2668 3318 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 15:43:16.079 2668 3318 D xcrash_dumper: before dump
11-25 15:43:16.372 2668 3318 D xcrash_dumper: after dump, print log file
11-25 15:43:16.470 2668 3318 D xcrash_dumper: logcat added
11-25 15:43:16.519 2668 3318 D xcrash_dumper: meminfo added
11-25 15:43:16.519 2668 3318 D xcrash_dumper: close log fd
11-25 15:43:16.519 2668 3318 D xcrash_dumper: rethrow SIGQUIT
11-25 15:43:16.519 2668 3318 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 15:43:16.687 2668 3318 D xcrash_dumper: memory info appended
11-25 15:43:16.688 2668 3318 D xcrash_dumper: background / foreground appended
11-25 15:43:22.715 2668 3318 D xcrash_dumper: process state: 2
11-25 15:43:22.716 2668 3318 D xcrash_dumper: delete anr log file until 10
11-25 15:43:22.716 2668 3318 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 15:43:22.716 2668 3318 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 15:43:22.717 2668 3318 D xcrash_dumper: anr callback invoked
11-25 15:43:22.717 2668 3318 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 15:43:34.860 2668 2668 D xcrash_dumper: AnrService, now 1637826214, found anr logs, tombstone_00001637826196061961_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrashMI 10 - Android 10
主线程阻塞 20s 后进入 ANR 处理流程，收到 SIGQUIT，0.5s 后完成 ANR 日志重启抛出 SIGQUIT，5s 后 APP 进入 NOT_RESPONDING 状态
11-25 11:30:52.898 8554 8554 D xcrash_dumper: xcrash start
11-25 11:30:52.906 8554 8554 D xcrash_dumper: xcrash native start
11-25 11:30:52.907 8554 8554 D xcrash_dumper: ANR native start
11-25 11:30:52.907 8554 8554 D xcrash_dumper: ANR native register SIGQUIT
11-25 11:30:52.907 8554 8554 D xcrash_dumper: xcrash native end
11-25 11:30:55.910 8554 8554 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-25 11:30:55.915 8554 8554 D xcrash_dumper: AnrService was started
11-25 11:30:55.918 8554 8554 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 11:31:16.430 8554 8554 D xcrash_dumper: SIGQUIT handler get 3, 151
11-25 11:31:16.430 8554 8867 D xcrash_dumper: ANR native dumper awaken
11-25 11:31:16.449 8554 8867 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:31:16.449 8554 8867 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Crash type: 'anr'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Start time: '2021-11-25T11:30:52.906+0800'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Crash time: '2021-11-25T11:31:16.430+0800'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Rooted: 'No'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: API level: '29'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: OS version: '10'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Kernel version: 'Linux version 4.19.81-perf-g453ac5d #1 SMP PREEMPT Tue May 19 03:00:27 CST 2020 (armv8l)'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Manufacturer: 'Xiaomi'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Brand: 'Xiaomi'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Model: 'Mi 10'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Build fingerprint: 'Xiaomi/umi/umi:10/QKQ1.191117.002/V11.0.25.0.QJBCNXM:user/release-keys'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: ABI: 'arm'
11-25 11:31:16.449 8554 8867 D xcrash_dumper: pid: 8554 >>> com.viomi.fridge.vertical <<<
11-25 11:31:16.449 8554 8867 D xcrash_dumper:
11-25 11:31:16.449 8554 8867 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 11:31:16.449 8554 8867 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 11:31:16.449 8554 8867 D xcrash_dumper: before dump
11-25 11:31:16.624 8554 8867 D xcrash_dumper: after dump, print log file
11-25 11:31:16.758 8554 8867 D xcrash_dumper: logcat added
11-25 11:31:16.804 8554 8867 D xcrash_dumper: meminfo added
11-25 11:31:16.804 8554 8867 D xcrash_dumper: close log fd
11-25 11:31:16.804 8554 8867 D xcrash_dumper: rethrow SIGQUIT
11-25 11:31:16.804 8554 8867 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:31:16.923 8554 8867 D xcrash_dumper: memory info appended
11-25 11:31:16.923 8554 8867 D xcrash_dumper: background / foreground appended
11-25 11:31:21.932 8554 8867 D xcrash_dumper: process state: 2
11-25 11:31:21.932 8554 8867 D xcrash_dumper: delete anr log file until 10
11-25 11:31:21.933 8554 8867 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:31:21.933 8554 8867 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:31:21.933 8554 8867 D xcrash_dumper: anr callback invoked
11-25 11:31:21.933 8554 8867 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:31:25.920 8554 8554 D xcrash_dumper: AnrService, now 1637811085, found anr logs, tombstone_00001637811076430808_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrashHUAWEI Mate 30 - Android 10
主线程阻塞 20s 后进入 ANR 处理流程，收到 SIGQUIT，0.7s 后完成 ANR 日志重启抛出 SIGQUIT，0.8s 后 APP 进入 NOT_RESPONDING 状态
11-29 16:01:45.634 22368 22368 D xcrash_dumper: xcrash start
11-29 16:01:45.657 22368 22368 D xcrash_dumper: xcrash native start
11-29 16:01:45.658 22368 22368 D xcrash_dumper: ANR native start
11-29 16:01:45.658 22368 22368 D xcrash_dumper: ANR native register SIGQUIT
11-29 16:01:45.658 22368 22368 D xcrash_dumper: xcrash native end
11-29 16:01:48.660 22368 22368 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-29 16:01:48.667 22368 22368 D xcrash_dumper: AnrService was started
11-29 16:01:48.674 22368 22368 D xcrash_dumper: AnrService, delete 1 anr logs before anr
11-29 16:02:09.330 22368 22368 D xcrash_dumper: SIGQUIT handler get 3, 259
11-29 16:02:09.330 22368 22783 D xcrash_dumper: ANR native dumper awaken
11-29 16:02:09.404 22368 22783 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-29 16:02:09.404 22368 22783 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Crash type: 'anr'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Start time: '2021-11-29T16:01:45.658+0800'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Crash time: '2021-11-29T16:02:09.330+0800'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: App version: '2.1.2.11.17'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Rooted: 'No'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: API level: '29'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: OS version: '10'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Kernel version: 'Linux version 4.14.116 #1 SMP PREEMPT Mon Sep 27 15:35:43 CST 2021 (armv8l)'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Manufacturer: 'HUAWEI'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Brand: 'HUAWEI'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Model: 'TAS-AL00'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Build fingerprint: 'HUAWEI/TAS-AL00/HWTAS:10/HUAWEITAS-AL00/102.0.0.209C00:user/release-keys'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: ABI: 'arm'
11-29 16:02:09.404 22368 22783 D xcrash_dumper: pid: 22368 >>> com.viomi.fridge.vertical <<<
11-29 16:02:09.404 22368 22783 D xcrash_dumper:
11-29 16:02:09.404 22368 22783 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-29 16:02:09.404 22368 22783 D xcrash_dumper: Mode: ART DumpForSigQuit
11-29 16:02:09.404 22368 22783 D xcrash_dumper: before dump
11-29 16:02:09.766 22368 22783 D xcrash_dumper: after dump, print log file
11-29 16:02:09.882 22368 22783 D xcrash_dumper: logcat added
11-29 16:02:10.002 22368 22783 D xcrash_dumper: meminfo added
11-29 16:02:10.002 22368 22783 D xcrash_dumper: close log fd
11-29 16:02:10.002 22368 22783 D xcrash_dumper: rethrow SIGQUIT
11-29 16:02:10.003 22368 22783 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-29 16:02:10.232 22368 22783 D xcrash_dumper: memory info appended
11-29 16:02:10.232 22368 22783 D xcrash_dumper: background / foreground appended
11-29 16:02:10.735 22368 22783 D xcrash_dumper: process state: 2
11-29 16:02:10.735 22368 22783 D xcrash_dumper: delete anr log file until 10
11-29 16:02:10.736 22368 22783 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-29 16:02:10.736 22368 22783 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-29 16:02:10.736 22368 22783 D xcrash_dumper: anr callback invoked
11-29 16:02:10.736 22368 22783 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-29 16:02:18.678 22368 22368 D xcrash_dumper: AnrService, now 1638172938, found anr logs, tombstone_00001638172929330558_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrashRedmi K20 - Android 9
主线程阻塞 20s 后进入 ANR 处理流程，收到 SIGQUIT，0.5s 后完成 ANR 日志重启抛出 SIGQUIT，4s 后 APP 进入 NOT_RESPONDING 状态
11-25 11:30:24.925 10449 10449 D xcrash_dumper: xcrash start
11-25 11:30:24.936 10449 10449 D xcrash_dumper: xcrash native start
11-25 11:30:24.938 10449 10449 D xcrash_dumper: ANR native start
11-25 11:30:24.939 10449 10449 D xcrash_dumper: ANR native register SIGQUIT
11-25 11:30:24.939 10449 10449 D xcrash_dumper: xcrash native end
11-25 11:30:27.942 10449 10449 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-25 11:30:27.946 10449 10449 D xcrash_dumper: AnrService was started
11-25 11:30:27.949 10449 10449 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 11:30:48.467 10449 10449 D xcrash_dumper: SIGQUIT handler get 3, 159
11-25 11:30:48.467 10449 10750 D xcrash_dumper: ANR native dumper awaken
11-25 11:30:48.500 10449 10750 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:30:48.500 10449 10750 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Crash type: 'anr'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Start time: '2021-11-25T11:30:24.937+0800'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Crash time: '2021-11-25T11:30:48.467+0800'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Rooted: 'No'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: API level: '28'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: OS version: '9'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Kernel version: 'Linux version 4.14.83-perf+ #1 SMP PREEMPT Thu Sep 26 12:23:20 CST 2019 (armv8l)'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Manufacturer: 'Xiaomi'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Brand: 'Xiaomi'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Model: 'Redmi K20'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Build fingerprint: 'Xiaomi/davinci/davinci:9/PKQ1.190302.001/V11.0.3.0.PFJCNXM:user/release-keys'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: ABI: 'arm'
11-25 11:30:48.500 10449 10750 D xcrash_dumper: pid: 10449 >>> com.viomi.fridge.vertical <<<
11-25 11:30:48.500 10449 10750 D xcrash_dumper:
11-25 11:30:48.500 10449 10750 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 11:30:48.500 10449 10750 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 11:30:48.500 10449 10750 D xcrash_dumper: before dump
11-25 11:30:48.658 10449 10750 D xcrash_dumper: after dump, print log file
11-25 11:30:48.975 10449 10750 D xcrash_dumper: logcat added
11-25 11:30:49.063 10449 10750 D xcrash_dumper: meminfo added
11-25 11:30:49.063 10449 10750 D xcrash_dumper: close log fd
11-25 11:30:49.065 10449 10750 D xcrash_dumper: rethrow SIGQUIT
11-25 11:30:49.066 10449 10750 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:30:49.179 10449 10750 D xcrash_dumper: memory info appended
11-25 11:30:49.184 10449 10750 D xcrash_dumper: background / foreground appended
11-25 11:30:52.699 10449 10750 D xcrash_dumper: process state: 2
11-25 11:30:52.700 10449 10750 D xcrash_dumper: delete anr log file until 10
11-25 11:30:52.701 10449 10750 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:30:52.701 10449 10750 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:30:52.701 10449 10750 D xcrash_dumper: anr callback invoked
11-25 11:30:52.701 10449 10750 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:30:57.953 10449 10449 D xcrash_dumper: AnrService, now 1637811057, found anr logs, tombstone_00001637811048467666_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrashHUAWEI P20 Pro - Android 8.1.0
主线程阻塞 10s 后进入 ANR 处理流程，收到 SIGQUIT，0.5s 后完成 ANR 日志重启抛出 SIGQUIT，2s 后 APP 进入 NOT_RESPONDING 状态
11-25 11:32:17.213 23690 23690 D xcrash_dumper: xcrash start
11-25 11:32:17.222 23690 23690 D xcrash_dumper: xcrash native start
11-25 11:32:17.223 23690 23690 D xcrash_dumper: ANR native start
11-25 11:32:17.223 23690 23690 D xcrash_dumper: ANR native register SIGQUIT
11-25 11:32:17.223 23690 23690 D xcrash_dumper: xcrash native end
11-25 11:32:20.226 23690 23690 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-25 11:32:20.233 23690 23690 D xcrash_dumper: AnrService was started
11-25 11:32:20.238 23690 23690 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 11:32:30.826 23690 23690 D xcrash_dumper: SIGQUIT handler get 3, 165
11-25 11:32:30.826 23690 23972 D xcrash_dumper: ANR native dumper awaken
11-25 11:32:30.856 23690 23972 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811150826614_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:32:30.856 23690 23972 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Crash type: 'anr'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Start time: '2021-11-25T11:32:17.222+0800'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Crash time: '2021-11-25T11:32:30.826+0800'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Rooted: 'No'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: API level: '27'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: OS version: '8.1.0'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Kernel version: 'Linux version 4.4.103+ #1 SMP PREEMPT Sun Jul 8 16:11:30 CST 2018 (armv7l)'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Manufacturer: 'HUAWEI'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Brand: 'HUAWEI'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Model: 'CLT-L29'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Build fingerprint: 'HUAWEI/CLT-L29/HWCLT:8.1.0/HUAWEICLT-L29/152(C432):user/release-keys'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: ABI: 'arm'
11-25 11:32:30.856 23690 23972 D xcrash_dumper: pid: 23690 >>> com.viomi.fridge.vertical <<<
11-25 11:32:30.856 23690 23972 D xcrash_dumper:
11-25 11:32:30.856 23690 23972 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 11:32:30.856 23690 23972 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 11:32:30.856 23690 23972 D xcrash_dumper: before dump
11-25 11:32:31.013 23690 23972 D xcrash_dumper: after dump, print log file
11-25 11:32:31.187 23690 23972 D xcrash_dumper: logcat added
11-25 11:32:31.311 23690 23972 D xcrash_dumper: meminfo added
11-25 11:32:31.311 23690 23972 D xcrash_dumper: close log fd
11-25 11:32:31.311 23690 23972 D xcrash_dumper: rethrow SIGQUIT
11-25 11:32:31.316 23690 23972 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811150826614_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:32:31.474 23690 23972 D xcrash_dumper: memory info appended
11-25 11:32:31.475 23690 23972 D xcrash_dumper: background / foreground appended
11-25 11:32:33.487 23690 23972 D xcrash_dumper: process state: 2
11-25 11:32:33.488 23690 23972 D xcrash_dumper: delete anr log file until 10
11-25 11:32:33.491 23690 23972 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811150826614_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811150826614_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:32:33.491 23690 23972 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811150826614_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 11:32:33.491 23690 23972 D xcrash_dumper: anr callback invoked
11-25 11:32:33.491 23690 23972 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811150826614_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrashvivo X9 Plus - Android 7.1.2
AnrService 运行 30s 未返回并没有触发 ANR，而后通过手动点击阻塞主线程 60s 才触发 ANR
没有继续深入测试触发 ANR 的阈值，总之 SIGQUIT 处理器还是能捕获到 ANR 的，从收到 SIGQUIT 到写入调用栈重新抛出 SIGQUIT 用时 0.8s，0.3s 后进入 ANR 状态
系统的 ANR 处理流程还会将日志写入到 /data/anr/traces.txt
11-25 16:38:01.561 12462 12462 D xcrash_dumper: xcrash start
11-25 16:38:01.574 12462 12462 D xcrash_dumper: xcrash native start
11-25 16:38:01.576 12462 12462 D xcrash_dumper: ANR native start
11-25 16:38:01.576 12462 12462 D xcrash_dumper: ANR native register SIGQUIT
11-25 16:38:01.576 12462 12462 D xcrash_dumper: xcrash native end
11-25 16:38:04.584 12462 12462 D xcrash_dumper: NativeHandler.anrTimeoutMs = 20s
11-25 16:38:04.598 12462 12462 D xcrash_dumper: AnrService was started
11-25 16:38:04.608 12462 12462 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 16:38:34.620 12462 12462 D xcrash_dumper: AnrService, now 1637829514, found anr logs,
11-25 16:41:10.125 12462 12462 D xcrash_dumper: SIGQUIT handler get 3, 143
11-25 16:41:10.125 12462 12741 D xcrash_dumper: ANR native dumper awaken
11-25 16:41:10.296 12462 12741 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637829670125799_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 16:41:10.296 12462 12741 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Crash type: 'anr'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Start time: '2021-11-25T16:38:01.575+0800'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Crash time: '2021-11-25T16:41:10.125+0800'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Rooted: 'No'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: API level: '25'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: OS version: '7.1.2'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Kernel version: 'Linux version 3.10.84-perf-g955b276c #1 SMP PREEMPT Thu Dec 10 17:42:47 CST 2020 (armv8l)'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Manufacturer: 'vivo'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Brand: 'vivo'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Model: 'vivo X9Plus'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Build fingerprint: 'vivo/PD1619/PD1619:7.1.2/N2G47H/compil12101707:user/release-keys'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: ABI: 'arm'
11-25 16:41:10.296 12462 12741 D xcrash_dumper: pid: 12462 >>> com.viomi.fridge.vertical <<<
11-25 16:41:10.296 12462 12741 D xcrash_dumper:
11-25 16:41:10.296 12462 12741 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 16:41:10.296 12462 12741 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 16:41:10.296 12462 12741 D xcrash_dumper: before dump
11-25 16:41:10.581 12462 12741 D xcrash_dumper: after dump, print log file
11-25 16:41:10.700 12462 12741 D xcrash_dumper: logcat added
11-25 16:41:10.851 12462 12741 D xcrash_dumper: meminfo added
11-25 16:41:10.851 12462 12741 D xcrash_dumper: close log fd
11-25 16:41:10.851 12462 12741 D xcrash_dumper: rethrow SIGQUIT
11-25 16:41:10.851 12462 12468 I art : Thread[3,tid=12468,WaitingInMainSignalCatcherLoop,Thread*=0xdcd2b000,peer=0x12c13d30,"Signal Catcher"]: reacting to signal 3
11-25 16:41:10.851 12462 12468 I art :
11-25 16:41:11.132 12462 12468 I art : Wrote stack traces to '/data/anr/traces.txt'
11-25 16:41:11.133 3743 3778 E ActivityManager: ANR in com.viomi.fridge.vertical
11-25 16:41:11.133 3743 3778 E ActivityManager: PID: 12462
11-25 16:41:11.133 3743 3778 E ActivityManager: Reason: Broadcast of Intent { act=android.intent.action.TIME_TICK flg=0x58000014 (has extras) }
11-25 16:41:11.137 12462 12741 D xcrash_dumper: memory info appended
11-25 16:41:11.143 12462 12741 D xcrash_dumper: background / foreground appended
11-25 16:41:11.145 12462 12741 D xcrash_dumper: process state: 2
11-25 16:41:11.146 12462 12741 D xcrash_dumper: delete anr log file until 10
11-25 16:41:11.147 12462 12741 D xcrash_dumper: /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637829670125799_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash rename to /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637829670125799_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 16:41:11.147 12462 12741 D xcrash_dumper: ANR Callback, null, /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637829670125799_2.1.2.11.17__com.viomi.fridge.vertical.anr.xcrash
11-25 16:41:11.147 12462 12741 D xcrash_dumper: anr callback invoked
11-25 16:41:11.147 12462 12741 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637829670125799_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrashGalaxy S7 edge - Android 6.0.1
从下面的日志可以看到 AnrService 运行 30s 未返回的确触发了 ANR 并收到了 SIGQUIT（具体是用时 22s 触发 ANR），但是输出日志文件用时 14s 太长了（Runtime::DumpForSigQuit 用了 14s），当重新抛出 SIGQUIT 时 AnrService 已返回，主线程随即恢复运行，我猜测此时 APP 就不再处于 NOT_RESPONDING 状态，也就无法判别 APP 发生了 ANR
HUAWEI Mate 30 时也出现过不能判别 ANR 的情况，当时是弹出通知权限的设置页，导致 APP 进入到后台（后台 ANR）
系统 ANR 流程会输出 /data/anr/traces.txt，从 Signal Catcher 线程收到 SIGQUIT 到输出日志文件耗时 6s
11-25 11:31:44.883 17149 17149 D xcrash_dumper: xcrash start
11-25 11:31:44.913 17149 17149 D xcrash_dumper: xcrash native start
11-25 11:31:44.913 17149 17149 D xcrash_dumper: ANR native start
11-25 11:31:44.913 17149 17149 D xcrash_dumper: ANR native register SIGQUIT
11-25 11:31:44.923 17149 17149 D xcrash_dumper: xcrash native end
11-25 11:31:47.923 17149 17149 D xcrash_dumper: NativeHandler.anrTimeoutMs = 60s
11-25 11:31:47.933 17149 17149 D xcrash_dumper: AnrService was started
11-25 11:31:47.933 17149 17149 D xcrash_dumper: AnrService, delete 0 anr logs before anr
11-25 11:32:10.173 17149 17149 D xcrash_dumper: SIGQUIT handler get 3, 150
11-25 11:32:10.173 17149 17447 D xcrash_dumper: ANR native dumper awaken
11-25 11:32:10.543 17149 17447 D xcrash_dumper: read header from /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811130176482_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:32:10.543 17149 17447 D xcrash_dumper: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Tombstone maker: 'xCrash 3.0.0'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Crash type: 'anr'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Start time: '2021-11-25T11:31:44.917+0800'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Crash time: '2021-11-25T11:32:10.176+0800'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: App ID: 'com.viomi.fridge.vertical'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: App version: '2.1.2.11.17'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Rooted: 'No'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: API level: '23'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: OS version: '6.0.1'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Kernel version: 'Linux version 3.18.20-9032921 #1 SMP PREEMPT Fri Dec 23 15:24:17 KST 2016 (armv8l)'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: ABI list: 'arm64-v8a,armeabi-v7a,armeabi'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Manufacturer: 'samsung'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Brand: 'samsung'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Model: 'SM-G9350'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Build fingerprint: 'samsung/hero2qltezc/hero2qltechn:6.0.1/MMB29M/G9350ZCU2APL3:user/release-keys'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: ABI: 'arm'
11-25 11:32:10.543 17149 17447 D xcrash_dumper: pid: 17149 >>> com.viomi.fridge.vertical <<<
11-25 11:32:10.543 17149 17447 D xcrash_dumper:
11-25 11:32:10.543 17149 17447 D xcrash_dumper: --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Cmd line: com.viomi.fridge.vertical
11-25 11:32:10.543 17149 17447 D xcrash_dumper: Mode: ART DumpForSigQuit
11-25 11:32:10.543 17149 17447 D xcrash_dumper: before dump
11-25 11:32:17.933 17149 17149 D xcrash_dumper: AnrService, now 1637811137, found anr logs,
11-25 11:32:24.053 17149 17447 D xcrash_dumper: after dump, print log file
11-25 11:32:24.383 17149 17447 D xcrash_dumper: logcat added
11-25 11:32:24.863 17149 17447 D xcrash_dumper: meminfo added
11-25 11:32:24.863 17149 17447 D xcrash_dumper: close log fd
11-25 11:32:24.863 17149 17447 D xcrash_dumper: rethrow SIGQUIT
11-25 11:32:24.863 17149 17153 I art : Thread[2,tid=17153,WaitingInMainSignalCatcherLoop,Thread*=0xee096000,peer=0x12c160a0,"Signal Catcher"]: reacting to signal 3
11-25 11:32:24.863 17149 17447 D xcrash_dumper: traceCallback null /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811130176482_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:32:25.163 17149 17447 D xcrash_dumper: memory info appended
11-25 11:32:25.183 17149 17447 D xcrash_dumper: background / foreground appended
11-25 11:32:50.103 17149 17447 D xcrash_dumper: not an ANR
11-25 11:32:50.103 17149 17447 D xcrash_dumper: JNI callback /data/user/0/com.viomi.fridge.vertical/files/tombstones/tombstone_00001637811130176482_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash
11-25 11:32:30.233 17149 17153 I art : Wrote stack traces to '/data/anr/traces.txt'绿联 6810 - Android 5.1
捕获到 SIGQUIT 后，会卡在 Runtime::DumpForSigQuit 然后不断收到 SIGQUIT，APP 会一直卡顿一直弹出 ANR 对话框（即使一直点击等待），APP 重启后可以发现上一次的 ANR dump 被输出到日志文件里了，但文件名还没改过来 tombstone_00001637663901079557_2.1.2.11.17__com.viomi.fridge.vertical.trace.xcrash，从日志来看应该是后续代码没有执行，卡在 Runtime::DumpForSigQuit 里了
// is Android Lollipop (5.x)?
xc_trace_is_lollipop = ((21 == xc_common_api_level || 22 == xc_common_api_level) ? 1 : 0);
// ...
if(sigsetjmp(jmpenv, 1) == 0)
{
if(xc_trace_is_lollipop)
xc_trace_libart_dbg_suspend();
XCD_LOG_DEBUG("before dump");
xc_trace_libart_runtime_dump(*xc_trace_libart_runtime_instance, xc_trace_libcpp_cerr);
XCD_LOG_DEBUG("after dump, print log file");
if(xc_trace_is_lollipop)
xc_trace_libart_dbg_resume();
}2021-11-23 18:20:10.580 4176-4477/com.viomi.fridge.vertical D/xcrash_dumper: before dump
2021-11-23 18:20:36.784 4176-4176/com.viomi.fridge.vertical D/xcrash_dumper: SIGQUIT handler get 3, 255
2021-11-23 18:21:10.108 4176-4176/com.viomi.fridge.vertical D/xcrash_dumper: SIGQUIT handler get 3, 255
2021-11-23 18:21:26.920 4176-4176/com.viomi.fridge.vertical D/xcrash_dumper: SIGQUIT handler get 3, 255
2021-11-23 18:22:10.100 4176-4176/com.viomi.fridge.vertical D/xcrash_dumper: SIGQUIT handler get 3, 255
2021-11-23 18:22:26.634 4176-4176/com.viomi.fridge.vertical D/xcrash_dumper: SIGQUIT handler get 3, 255
2021-11-23 18:23:10.109 4176-4176/com.viomi.fridge.vertical D/xcrash_dumper: SIGQUIT handler get 3, 255NOT_RESPONDING 轮询时长的缺陷
在 NativeHandler.traceCallback 里会检查当前进程的状态是否为 ANR，默认是在 15s 内轮询检查进程是否处于 ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING
class NativeHandler {
private static void traceCallback(String logPath, String emergency) {
if (TextUtils.isEmpty(logPath)) {
return;
}
//append memory info
TombstoneManager.appendSection(logPath, "memory info", Util.getProcessMemoryInfo());
//append background / foreground
TombstoneManager.appendSection(logPath, "foreground", ActivityMonitor.getInstance().isApplicationForeground() ? "yes" : "no");
//check process ANR state
if (NativeHandler.getInstance().anrCheckProcessState) {
if (!Util.checkProcessAnrState(NativeHandler.getInstance().ctx, NativeHandler.getInstance().anrTimeoutMs)) {
FileManager.getInstance().recycleLogFile(new File(logPath));
return; //not an ANR
}
}
//delete extra ANR log files
if (!FileManager.getInstance().maintainAnr()) {
return;
}
//rename trace log file to ANR log file
String anrLogPath = logPath.substring(0, logPath.length() - Util.traceLogSuffix.length()) + Util.anrLogSuffix;
File traceFile = new File(logPath);
File anrFile = new File(anrLogPath);
if (!traceFile.renameTo(anrFile)) {
FileManager.getInstance().recycleLogFile(traceFile);
return;
}
ICrashCallback callback = NativeHandler.getInstance().anrCallback;
if (callback != null) {
try {
callback.onCrash(anrLogPath, emergency);
} catch (Exception e) {
XCrash.getLogger().w(Util.TAG, "NativeHandler ANR callback.onCrash failed", e);
}
}
}
static boolean checkProcessAnrState(Context ctx, long timeoutMs) {
ActivityManager am = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);
if (am == null) return false;
int pid = android.os.Process.myPid();
long poll = timeoutMs / 500;
for (int i = 0; i < poll; i++) {
List<ActivityManager.ProcessErrorStateInfo> processErrorList = am.getProcessesInErrorState();
if (processErrorList != null) {
for (ActivityManager.ProcessErrorStateInfo errorStateInfo : processErrorList) {
if (errorStateInfo.pid == pid) {
Log.d("xcrash_dumper", String.format("process state: %s", errorStateInfo.condition));
}
if (errorStateInfo.pid == pid && errorStateInfo.condition == ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING) {
return true;
}
}
}
try {
Thread.sleep(500);
} catch (Exception ignored) {
}
}
return false;
}
}但是这个轮询时长很有问题，默认 15s 在 MI 9 - Android 11 上不够长，ANR 对话框还没弹出来，此时进程并不处于 ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING，导致 xCrash 判定不是 ANR，然后把日志删了，我把这个时长增加到 60s 是能判定 ANR 的
还有上面的 Galaxy S7 edge - Android 6.0.1，dump 耗时太长了以至于重新抛出 SIGQUIT 时主线程已经从阻塞中恢复过来，这样 APP 就不会进入 NOT_RESPONDING 状态
可以想到有这么几个解决方案：
增大
NOT_RESPONDING轮询时长到一个足够大的值，但此时 ANR 对话框已经弹出，用户可能直接 kill app，于是以下逻辑可能会无法执行（NativeHandler.traceCallbackcheck process ANR state以下的代码）：- 清理 ANR 目录（维持最多
XCrash.InitParameters.anrLogCountMax） - 日志文件后缀是
.trace.xcrash而不是.anr.xcrash，因为 anr 和 trace 的逻辑是一样的，最后通过上面的 ANR 判定逻辑来判断是不是 ANR，是的话把.trace.xcrash改名为.anr.xcrash - anr callback 无法执行（
XCrash.InitParameters.setAnrCallback）
- 清理 ANR 目录（维持最多
关闭 ANR 检查（
XCrash.InitParameters.setAnrCheckProcessState）
这个看似最简单但是不行的，因为 SIGQUIT 对于 APP 来说是 Runtime::DumpForSigQuit，那么当其他 APP 发生 ANR 时系统是通过向所有其他进程发送 SIGQUIT 来收集 ANR 日志的（参考 ），当然我们的 APP 也会收到，但此时并不是我们的 APP 发生了 ANR
所以检查是否当前 APP 发生了 ANR 这个校验是一定要做得，那么怎么优化第一个解决方案呢？
- 清理操作可以放到其他地方，比如初始化后
- 日志默认是
.anr.xcrash，轮询后发现 app 并没有处于NOT_RESPONDING则把日志删掉，如果是 ANR 则足够长的轮询时长能够保证在弹出 ANR 对话框（处于NOT_RESPONDING）后判定为 ANR，即使用户即刻 kill app，ANR 日志还是保留下来，判定为 ANR - anr callback 不要在 catch anr 后回调，因为此刻很有可能被 kill 而不能稳定调用，可以将 ANR 日志标为 unread，初始化后检查日志将 unread 的回调并置为 read
NOT_RESPONDING 机制的缺陷
HUAWEI Mate 30 出现过不能判别 ANR 的情况，当时是弹出通知权限的设置页，导致 APP 进入到后台（后台 ANR）
后台 ANR 的情况下除非在【开发者选项】里打开了【显示所有“应用程序无响应”】否则 APP 是不会进入 NOT_RESPONDING 状态的
总结
xCrash ANR 在 Android 7 API 24 及之后的版本上都是比较稳定的，Android 6 API 23 及之前的版本就效果比较差，可能是 ROM 的原因，也可能是机器性能太差了
利用 SIGQUIT 来捕获 ANR 的发生这一机制是稳定有效的
轮询 APP 是否处于 NOT_RESPONDING 来判别是不是当前 APP 发生了 ANR，这一手段不太可靠