Datasnap 应用程序在一段时间后死亡
Datasnap application dies after a while
Delphi 10.3.3
到这里 Android 10（也 Android 8）。电池优化已关闭。只有当我的设备在充电器上时才会出现问题。大约 48 小时后它就死了。
我试图通过定期（8 小时后）唤醒设备来解决这个问题。今天它最后一次向 3:00 服务器发送数据，所以我以为它死了。但令我大吃一惊的是，它仍然在 08:00 醒来。不幸的是在触摸屏幕后，试图打开一些东西。 Android 强迫我关闭应用程序。
这是代码的一部分：
（请原谅我的长度，它看起来很长，但这是最低限度的，我想我会包括我使用的每个过程和功能，以便也许帮助比我更聪明的人，看看我是否泄漏内存或做一些可怕的事情，注意：如果设备不在充电器上，这个完全相同的代码在数周后不会崩溃或挂起）
procedure TMain.Timer1Timer(Sender: TObject);
var SyncTime : TDateTime;
TransferTime : TDateTime;
begin
if FDEviceName = 'error' then Exit;
Timer1.Enabled:=false;
SyncTime:=inireadDt(FilePath+'/Configuration/settings.conf','Tasks','SyncTime');
if MinutesBetween(now,SyncTime) >= 1 then
begin
if isDeviceIdleMode = false then
begin
BatteryLevel := GetBatteryLevel;
GetWifiStatus;
SendDeviceStatus;
iniwrite(FilePath+'/Configuration/settings.conf','Tasks','SyncTime',now);
if GetBatteryCharging = 0 then WakeTime := 0;
if GetBatteryCharging in [1,2] then inc(WakeTime);
// to prevent app from dying we wake up device on the charger after 8 hrs
if WakeTime = 480 then
begin
WakeUpNow;
WakeTime:=0;
end;
end;
end;
Timer1.Enabled:=true;
end;
function TMain.GetBatteryLevel;
var
Filter: JIntentFilter;
Battery: JIntent;
begin
Result:=-1;
try
Filter := TJIntentFilter.Create;
Filter.addAction(TJIntent.JavaClass.ACTION_BATTERY_CHANGED);
Battery := TAndroidHelper.Context.registerReceiver(NIL, filter);
Result := Battery.getIntExtra(StringToJString('level'), -1);
except
Result:=-1;
end;
end;
function TMain.GetBatteryCharging;
var
Filter: JIntentFilter;
Battery: JIntent;
begin
Result:=-1;
try
Filter := TJIntentFilter.Create;
Filter.addAction(TJIntent.JavaClass.ACTION_BATTERY_CHANGED);
Battery := TAndroidHelper.Context.registerReceiver(NIL, filter);
Result := Battery.getIntExtra(StringToJString('plugged'), -1);
except
Result:=-1;
end;
end;
procedure TMain.WakeUpNow;
var
PowerManager : JPowerManager;
WakeLock : JPowerManager_WakeLock;
begin
PowerManager := TJPowerManager.Wrap(TAndroidHelper.Context.getSystemService(TJContext.JavaClass.POWER_SERVICE));
WakeLock := PowerManager.newWakeLock(TJPowerManager.JavaClass.FULL_WAKE_LOCK or TJPowerManager.JavaClass.ACQUIRE_CAUSES_WAKEUP,StringToJString('NE_PACK'));
WakeLock.acquire;
WakeLock.release;
WakeLock:=nil;
end;
procedure TMain.GetWifiStatus;
var obj: JObject;
WifiMgr : JWifiManager;
WifiInfo : JWifiInfo;
begin
// ACCESS_FINE_LOCATION Permission and muss ALLOW LOCATION Services on Phone
SignalStrength := 0;
SSID := '-';
try
obj := TAndroidHelper.Context.getSystemService(TJContext.JavaClass.WIFI_SERVICE);
WifiMgr := TJWifiManager.Wrap((obj as ILocalObject).GetObjectID);
WifiInfo := WifiMgr.getConnectionInfo;
case WifiInfo.getRssi of
-49..0 : SignalStrength:=4;
-59..-50 : SignalStrength:=3;
-70..-60 : SignalStrength:=2;
else SignalStrength:=1;
end;
SSID := JStringToString(WifiInfo.getSSID);
except
SignalStrength := 0;
SSID := '-';
end;
end;
procedure TMain.SendDeviceStatus;
var
SQLConnection : TSQLConnection;
Temp : TServerMethods1Client;
begin
try
SQLConnection := TSQLConnection.Create(nil);
try
SQLConnection.DriverName:='DataSnap';
SQLConnection.Params.Clear;
SQLConnection.Params.Add('DriverUnit=Data.DBXDataSnap');
SQLConnection.Params.Add('DriverAssemblyLoader=Borland.Data.TDBXClientDriverLoader,Borland.Data.DbxClientDriver,Version=24.0.0.0,Culture=neutral,PublicKeyToken=91d62ebb5b0d1b1b');
SQLConnection.Params.Add('DriverName=DataSnap');
SQLConnection.Params.Add('HostName='+FServerIP);
SQLConnection.Params.Add('Port='+FServerPort);
SQLConnection.Params.Add('Filters={}');
SQLConnection.Params.Add('CommunicationIPVersion=IP_IPv4');
SQLConnection.Params.Add('CommunicationProtocol=tcp/ip');
SQLConnection.Params.Add('DatasnapContext=datasnap/');
SQLConnection.Params.Add('DSProxyPort=8888');
SQLConnection.Params.Add('CommunicationTimeout=500');
SQLConnection.Params.Add('ConnectTimeout=500');
SQLConnection.Connected:=true;
Temp := TServerMethods1Client.Create(SQLConnection.DBXConnection);
try
FOwner := IntToStr(WakeTime);
Temp.DEVICE_STATUS(FDeviceName,FOwner,SSID,SoftwareVersion,SignalStrength,BatteryLevel);
finally
Temp.Free;
end;
SQLConnection.Close;
finally
SQLConnection.Free;
end;
except
on E : Exception do
begin
// nothing
end;
end;
end;
这是上次崩溃的日志文件：
03-31 07:15:16.070 30336 30374 F libc : Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 30374 (RenderThread), pid 30336 (rcadero.NE_PACK)
03-31 07:15:16.296 14307 14307 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
03-31 07:15:16.296 14307 14307 F DEBUG : Build fingerprint: 'Zebra/TC21PG/TC21:10/10-16-10.00-QG-U14-STD-HEL-04/18:user/release-keys'
03-31 07:15:16.296 14307 14307 F DEBUG : Revision: '0'
03-31 07:15:16.296 14307 14307 F DEBUG : ABI: 'arm'
03-31 07:15:16.297 14307 14307 F DEBUG : Timestamp: 2021-03-31 07:15:16+0200
03-31 07:15:16.297 14307 14307 F DEBUG : pid: 30336, tid: 30374, name: RenderThread >>> com.embarcadero.NE_PACK <<<
03-31 07:15:16.297 14307 14307 F DEBUG : uid: 10227
03-31 07:15:16.297 14307 14307 F DEBUG : signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
03-31 07:15:16.297 14307 14307 F DEBUG : Abort message: 'terminating with uncaught exception of type std::__1::system_error: thread constructor failed: Try again'
03-31 07:15:16.297 14307 14307 F DEBUG : r0 00000000 r1 000076a6 r2 00000006 r3 c5d2eb20
03-31 07:15:16.297 14307 14307 F DEBUG : r4 c5d2eb34 r5 c5d2eb18 r6 00007680 r7 0000016b
03-31 07:15:16.297 14307 14307 F DEBUG : r8 c5d2eb30 r9 c5d2eb20 r10 c5d2eb50 r11 c5d2eb40
03-31 07:15:16.298 14307 14307 F DEBUG : ip 000076a6 sp c5d2eaf0 lr ef7e34fb pc ef7e350e
03-31 07:15:16.411 14307 14307 F DEBUG :
03-31 07:15:16.411 14307 14307 F DEBUG : backtrace:
03-31 07:15:16.412 14307 14307 F DEBUG : #00 pc 0006050e /apex/com.android.runtime/lib/bionic/libc.so (abort+166) (BuildId: 8549daf46b82d53f76c6449b777e63ee)
03-31 07:15:16.412 14307 14307 F DEBUG : #01 pc 0003606b /system/lib/libc++.so (abort_message+86) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #02 pc 000361f3 /system/lib/libc++.so (demangling_terminate_handler()+178) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #03 pc 00046837 /system/lib/libc++.so (std::__terminate(void (*)())+2) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #04 pc 00046091 /system/lib/libc++.so (__cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*)+12) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #05 pc 00045ffd /system/lib/libc++.so (__cxa_throw+72) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #06 pc 000826cf /system/lib/libc++.so (std::__1::__throw_system_error(int, char const*)+82) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #07 pc 0000e65f /system/lib/libEGL.so (android::egl_cache_t::setBlob(void const*, long, void const*, long)+230) (BuildId: 338a4d9b681c482215c94f50c9c7e1b8)
03-31 07:15:16.412 14307 14307 F DEBUG : #08 pc 0000e515 /system/lib/libEGL.so (android::setBlob(void const*, long, void const*, long)+20) (BuildId: 338a4d9b681c482215c94f50c9c7e1b8)
03-31 07:15:16.412 14307 14307 F DEBUG : #09 pc 001000eb /vendor/lib/egl/libGLESv2_adreno.so (BuildId: 98c923de8a462f5fbc3bd0621f98282b)
03-31 07:15:16.412 14307 14307 F DEBUG : #10 pc 000945dd /vendor/lib/egl/libGLESv2_adreno.so (BuildId: 98c923de8a462f5fbc3bd0621f98282b)
03-31 07:15:16.412 14307 14307 F DEBUG : #11 pc 001cd267 /system/lib/libhwui.so (GrGLCompileAndAttachShader(GrGLContext const&, unsigned int, unsigned int, char const*, int, GrGpu::Stats*, SkSL::Program::Settings const&)+86) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #12 pc 001cc245 /system/lib/libhwui.so (GrGLProgramBuilder::compileAndAttachShaders(char const*, int, unsigned int, unsigned int, SkTDArray<unsigned int>*, SkSL::Program::Settings const&, SkSL::Program::Settings::Inputs const&)+32) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #13 pc 001cb57b /system/lib/libhwui.so (GrGLProgramBuilder::CreateProgram(GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrTextureProxy const* const*, GrPipeline const&, GrProgramDesc*, GrGLGpu*)+866) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #14 pc 001c7957 /system/lib/libhwui.so (GrGLGpu::ProgramCache::refProgram(GrGLGpu*, GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrTextureProxy const* const*, GrPipeline const&, bool)+190) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #15 pc 001c6dfd /system/lib/libhwui.so (GrGLGpu::flushGLState(GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, int, bool)+72) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #16 pc 001c68ff /system/lib/libhwui.so (GrGLGpu::draw(GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, GrMesh const*, int)+86) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #17 pc 001c689f /system/lib/libhwui.so (GrGLGpuRTCommandBuffer::onDraw(GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, GrMesh const*, int, SkRect const&)+30) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #18 pc 001858d3 /system/lib/libhwui.so (GrGpuRTCommandBuffer::draw(GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, GrMesh const*, int, SkRect const&)+166) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #19 pc 00185633 /system/lib/libhwui.so (GrOpFlushState::executeDrawsAndUploadsForMeshDrawOp(GrOp const*, SkRect const&, GrProcessorSet&&, unsigned int, GrUserStencilSettings const*)+310) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #20 pc 003d800f /system/lib/libhwui.so (_ZN12_GLOBAL__N_121ShadowCircularRRectOp9onExecuteEP14GrOpFlushStateRK6SkRectd75113d8bcc59e80cffa524fd584b8c+50) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #21 pc 001b435f /system/lib/libhwui.so (GrOp::execute(GrOpFlushState*, SkRect const&)+50) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #22 pc 001b41bf /system/lib/libhwui.so (GrRenderTargetOpList::onExecute(GrOpFlushState*)+282) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #23 pc 001f9deb /system/lib/libhwui.so (GrDrawingManager::flush(GrSurfaceProxy*, SkSurface::BackendSurfaceAccess, GrFlushFlags, int, GrBackendSemaphore*, void (*)(void*), void*)+1086) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #24 pc 001f9921 /system/lib/libhwui.so (GrDrawingManager::prepareSurfaceForExternalIO(GrSurfaceProxy*, SkSurface::BackendSurfaceAccess, GrFlushFlags, int, GrBackendSemaphore*, void (*)(void*), void*)+128) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #25 pc 001f97eb /system/lib/libhwui.so (GrRenderTargetContext::prepareForExternalIO(SkSurface::BackendSurfaceAccess, GrFlushFlags, int, GrBackendSemaphore*, void (*)(void*), void*)+86) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #26 pc 001f978b /system/lib/libhwui.so (SkGpuDevice::flush()+22) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #27 pc 001b87fd /system/lib/libhwui.so (android::uirenderer::skiapipeline::SkiaPipeline::renderFrame(android::uirenderer::LayerUpdateQueue const&, SkRect const&, std::__1::vector<android::sp<android::uirenderer::RenderNode>, std::__1::allocator<android::sp<android::uirenderer::RenderNode>>> const&, bool, android::uirenderer::Rect const&, sk_sp<SkSurface>, SkMatrix const&)+140) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #28 pc 001b852b /system/lib/libhwui.so (android::uirenderer::skiapipeline::SkiaOpenGLPipeline::draw(android::uirenderer::renderthread::Frame const&, SkRect const&, SkRect const&, android::uirenderer::LightGeometry const&, android::uirenderer::LayerUpdateQueue*, android::uirenderer::Rect const&, bool, android::uirenderer::LightInfo const&, std::__1::vector<android::sp<android::uirenderer::RenderNode>, std::__1::allocator<android::sp<android::uirenderer::RenderNode>>> const&, android::uirenderer::FrameInfoVisualizer*)+266) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #29 pc 001f4ff5 /system/lib/libhwui.so (android::uirenderer::renderthread::CanvasContext::draw()+236) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #30 pc 001f45c1 /system/lib/libhwui.so (android::uirenderer::renderthread::DrawFrameTask::run()+156) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #31 pc 00202789 /system/lib/libhwui.so (android::uirenderer::WorkQueue::process()+164) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #32 pc 002025e1 /system/lib/libhwui.so (android::uirenderer::renderthread::RenderThread::threadLoop()+72) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #33 pc 0000da2b /system/lib/libutils.so (android::Thread::_threadLoop(void*)+214) (BuildId: abcd5dd14a985ca140ae57aced79ae67)
03-31 07:15:16.413 14307 14307 F DEBUG : #34 pc 000aaa3b /apex/com.android.runtime/lib/bionic/libc.so (__pthread_start(void*)+20) (BuildId: 8549daf46b82d53f76c6449b777e63ee)
03-31 07:15:16.413 14307 14307 F DEBUG : #35 pc 000619b3 /apex/com.android.runtime/lib/bionic/libc.so (__start_thread+30) (BuildId: 8549daf46b82d53f76c6449b777e63ee)
非常感谢您的帮助。谢谢你的时间。
移动设备上的 IIRC 无法保证 Android/iOS 系统会让应用程序永远存在。您的应用很可能被 OS 稍后发送 SIG_ABRT 以释放资源而终止。
还有一种可能是线程过多后OOM。日志报错说明创建线程有问题
可能每个DB连接使用一个线程，线程没有释放，所以过一会就崩溃了。请删除数据库连接并重试。它可能有助于找出问题的根本原因。也尝试记录内存消耗，看看这个长期存在的应用程序是否没有泄漏。
无论如何，我宁愿使用基于 HTTPS+JSON 的 REST 服务进行应用程序通信，而不是臃肿的 DataSnap RAD 客户端。
看来我需要检查我是否处于交互模式。如果我不处于交互模式，那么我必须减少向服务器返回报告的频率。例如，15 分钟而不是 1 分钟。
我在 2021 年 3 月 31 日 14:02:40 启动了应用程序，现在是 2021 年 4 月 6 日 06:11 并且仍然是 运行 。所有其他带有匿名线程等的版本都死了。只有这个工作之间有 15 分钟的工作幸存下来。我在某处读到，如果处于打瞌睡模式，应用程序只能在 10 分钟内执行一次。但似乎想不起在哪里。也许这就是为什么它在 运行 1 分钟间隔两天后被杀死的原因。
代码如下所示：
if isInteractive = true then
SyncPeriod := 1
else
SyncPeriod := 15;
SyncTime:=inireadDt(FilePath+'/Configuration/settings.conf','Tasks','SyncTime');
if MinutesBetween(now,SyncTime) >= SyncPeriod then
begin
if isDeviceIdleMode = false then
begin
BatteryLevel := GetBatteryLevel;
GetWifiStatus;
SendDeviceStatus;
iniwrite(FilePath+'/Configuration/settings.conf','Tasks','SyncTime',now);
end;
end;
Delphi 10.3.3
到这里 Android 10（也 Android 8）。电池优化已关闭。只有当我的设备在充电器上时才会出现问题。大约 48 小时后它就死了。
我试图通过定期（8 小时后）唤醒设备来解决这个问题。今天它最后一次向 3:00 服务器发送数据，所以我以为它死了。但令我大吃一惊的是，它仍然在 08:00 醒来。不幸的是在触摸屏幕后，试图打开一些东西。 Android 强迫我关闭应用程序。
这是代码的一部分：
（请原谅我的长度，它看起来很长，但这是最低限度的，我想我会包括我使用的每个过程和功能，以便也许帮助比我更聪明的人，看看我是否泄漏内存或做一些可怕的事情，注意：如果设备不在充电器上，这个完全相同的代码在数周后不会崩溃或挂起）
procedure TMain.Timer1Timer(Sender: TObject);
var SyncTime : TDateTime;
TransferTime : TDateTime;
begin
if FDEviceName = 'error' then Exit;
Timer1.Enabled:=false;
SyncTime:=inireadDt(FilePath+'/Configuration/settings.conf','Tasks','SyncTime');
if MinutesBetween(now,SyncTime) >= 1 then
begin
if isDeviceIdleMode = false then
begin
BatteryLevel := GetBatteryLevel;
GetWifiStatus;
SendDeviceStatus;
iniwrite(FilePath+'/Configuration/settings.conf','Tasks','SyncTime',now);
if GetBatteryCharging = 0 then WakeTime := 0;
if GetBatteryCharging in [1,2] then inc(WakeTime);
// to prevent app from dying we wake up device on the charger after 8 hrs
if WakeTime = 480 then
begin
WakeUpNow;
WakeTime:=0;
end;
end;
end;
Timer1.Enabled:=true;
end;
function TMain.GetBatteryLevel;
var
Filter: JIntentFilter;
Battery: JIntent;
begin
Result:=-1;
try
Filter := TJIntentFilter.Create;
Filter.addAction(TJIntent.JavaClass.ACTION_BATTERY_CHANGED);
Battery := TAndroidHelper.Context.registerReceiver(NIL, filter);
Result := Battery.getIntExtra(StringToJString('level'), -1);
except
Result:=-1;
end;
end;
function TMain.GetBatteryCharging;
var
Filter: JIntentFilter;
Battery: JIntent;
begin
Result:=-1;
try
Filter := TJIntentFilter.Create;
Filter.addAction(TJIntent.JavaClass.ACTION_BATTERY_CHANGED);
Battery := TAndroidHelper.Context.registerReceiver(NIL, filter);
Result := Battery.getIntExtra(StringToJString('plugged'), -1);
except
Result:=-1;
end;
end;
procedure TMain.WakeUpNow;
var
PowerManager : JPowerManager;
WakeLock : JPowerManager_WakeLock;
begin
PowerManager := TJPowerManager.Wrap(TAndroidHelper.Context.getSystemService(TJContext.JavaClass.POWER_SERVICE));
WakeLock := PowerManager.newWakeLock(TJPowerManager.JavaClass.FULL_WAKE_LOCK or TJPowerManager.JavaClass.ACQUIRE_CAUSES_WAKEUP,StringToJString('NE_PACK'));
WakeLock.acquire;
WakeLock.release;
WakeLock:=nil;
end;
procedure TMain.GetWifiStatus;
var obj: JObject;
WifiMgr : JWifiManager;
WifiInfo : JWifiInfo;
begin
// ACCESS_FINE_LOCATION Permission and muss ALLOW LOCATION Services on Phone
SignalStrength := 0;
SSID := '-';
try
obj := TAndroidHelper.Context.getSystemService(TJContext.JavaClass.WIFI_SERVICE);
WifiMgr := TJWifiManager.Wrap((obj as ILocalObject).GetObjectID);
WifiInfo := WifiMgr.getConnectionInfo;
case WifiInfo.getRssi of
-49..0 : SignalStrength:=4;
-59..-50 : SignalStrength:=3;
-70..-60 : SignalStrength:=2;
else SignalStrength:=1;
end;
SSID := JStringToString(WifiInfo.getSSID);
except
SignalStrength := 0;
SSID := '-';
end;
end;
procedure TMain.SendDeviceStatus;
var
SQLConnection : TSQLConnection;
Temp : TServerMethods1Client;
begin
try
SQLConnection := TSQLConnection.Create(nil);
try
SQLConnection.DriverName:='DataSnap';
SQLConnection.Params.Clear;
SQLConnection.Params.Add('DriverUnit=Data.DBXDataSnap');
SQLConnection.Params.Add('DriverAssemblyLoader=Borland.Data.TDBXClientDriverLoader,Borland.Data.DbxClientDriver,Version=24.0.0.0,Culture=neutral,PublicKeyToken=91d62ebb5b0d1b1b');
SQLConnection.Params.Add('DriverName=DataSnap');
SQLConnection.Params.Add('HostName='+FServerIP);
SQLConnection.Params.Add('Port='+FServerPort);
SQLConnection.Params.Add('Filters={}');
SQLConnection.Params.Add('CommunicationIPVersion=IP_IPv4');
SQLConnection.Params.Add('CommunicationProtocol=tcp/ip');
SQLConnection.Params.Add('DatasnapContext=datasnap/');
SQLConnection.Params.Add('DSProxyPort=8888');
SQLConnection.Params.Add('CommunicationTimeout=500');
SQLConnection.Params.Add('ConnectTimeout=500');
SQLConnection.Connected:=true;
Temp := TServerMethods1Client.Create(SQLConnection.DBXConnection);
try
FOwner := IntToStr(WakeTime);
Temp.DEVICE_STATUS(FDeviceName,FOwner,SSID,SoftwareVersion,SignalStrength,BatteryLevel);
finally
Temp.Free;
end;
SQLConnection.Close;
finally
SQLConnection.Free;
end;
except
on E : Exception do
begin
// nothing
end;
end;
end;
这是上次崩溃的日志文件：
03-31 07:15:16.070 30336 30374 F libc : Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 30374 (RenderThread), pid 30336 (rcadero.NE_PACK)
03-31 07:15:16.296 14307 14307 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
03-31 07:15:16.296 14307 14307 F DEBUG : Build fingerprint: 'Zebra/TC21PG/TC21:10/10-16-10.00-QG-U14-STD-HEL-04/18:user/release-keys'
03-31 07:15:16.296 14307 14307 F DEBUG : Revision: '0'
03-31 07:15:16.296 14307 14307 F DEBUG : ABI: 'arm'
03-31 07:15:16.297 14307 14307 F DEBUG : Timestamp: 2021-03-31 07:15:16+0200
03-31 07:15:16.297 14307 14307 F DEBUG : pid: 30336, tid: 30374, name: RenderThread >>> com.embarcadero.NE_PACK <<<
03-31 07:15:16.297 14307 14307 F DEBUG : uid: 10227
03-31 07:15:16.297 14307 14307 F DEBUG : signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
03-31 07:15:16.297 14307 14307 F DEBUG : Abort message: 'terminating with uncaught exception of type std::__1::system_error: thread constructor failed: Try again'
03-31 07:15:16.297 14307 14307 F DEBUG : r0 00000000 r1 000076a6 r2 00000006 r3 c5d2eb20
03-31 07:15:16.297 14307 14307 F DEBUG : r4 c5d2eb34 r5 c5d2eb18 r6 00007680 r7 0000016b
03-31 07:15:16.297 14307 14307 F DEBUG : r8 c5d2eb30 r9 c5d2eb20 r10 c5d2eb50 r11 c5d2eb40
03-31 07:15:16.298 14307 14307 F DEBUG : ip 000076a6 sp c5d2eaf0 lr ef7e34fb pc ef7e350e
03-31 07:15:16.411 14307 14307 F DEBUG :
03-31 07:15:16.411 14307 14307 F DEBUG : backtrace:
03-31 07:15:16.412 14307 14307 F DEBUG : #00 pc 0006050e /apex/com.android.runtime/lib/bionic/libc.so (abort+166) (BuildId: 8549daf46b82d53f76c6449b777e63ee)
03-31 07:15:16.412 14307 14307 F DEBUG : #01 pc 0003606b /system/lib/libc++.so (abort_message+86) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #02 pc 000361f3 /system/lib/libc++.so (demangling_terminate_handler()+178) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #03 pc 00046837 /system/lib/libc++.so (std::__terminate(void (*)())+2) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #04 pc 00046091 /system/lib/libc++.so (__cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*)+12) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #05 pc 00045ffd /system/lib/libc++.so (__cxa_throw+72) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #06 pc 000826cf /system/lib/libc++.so (std::__1::__throw_system_error(int, char const*)+82) (BuildId: ed0f2f56655f3bf72ea2135f610dee0b)
03-31 07:15:16.412 14307 14307 F DEBUG : #07 pc 0000e65f /system/lib/libEGL.so (android::egl_cache_t::setBlob(void const*, long, void const*, long)+230) (BuildId: 338a4d9b681c482215c94f50c9c7e1b8)
03-31 07:15:16.412 14307 14307 F DEBUG : #08 pc 0000e515 /system/lib/libEGL.so (android::setBlob(void const*, long, void const*, long)+20) (BuildId: 338a4d9b681c482215c94f50c9c7e1b8)
03-31 07:15:16.412 14307 14307 F DEBUG : #09 pc 001000eb /vendor/lib/egl/libGLESv2_adreno.so (BuildId: 98c923de8a462f5fbc3bd0621f98282b)
03-31 07:15:16.412 14307 14307 F DEBUG : #10 pc 000945dd /vendor/lib/egl/libGLESv2_adreno.so (BuildId: 98c923de8a462f5fbc3bd0621f98282b)
03-31 07:15:16.412 14307 14307 F DEBUG : #11 pc 001cd267 /system/lib/libhwui.so (GrGLCompileAndAttachShader(GrGLContext const&, unsigned int, unsigned int, char const*, int, GrGpu::Stats*, SkSL::Program::Settings const&)+86) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #12 pc 001cc245 /system/lib/libhwui.so (GrGLProgramBuilder::compileAndAttachShaders(char const*, int, unsigned int, unsigned int, SkTDArray<unsigned int>*, SkSL::Program::Settings const&, SkSL::Program::Settings::Inputs const&)+32) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #13 pc 001cb57b /system/lib/libhwui.so (GrGLProgramBuilder::CreateProgram(GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrTextureProxy const* const*, GrPipeline const&, GrProgramDesc*, GrGLGpu*)+866) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #14 pc 001c7957 /system/lib/libhwui.so (GrGLGpu::ProgramCache::refProgram(GrGLGpu*, GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrTextureProxy const* const*, GrPipeline const&, bool)+190) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #15 pc 001c6dfd /system/lib/libhwui.so (GrGLGpu::flushGLState(GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, int, bool)+72) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #16 pc 001c68ff /system/lib/libhwui.so (GrGLGpu::draw(GrRenderTarget*, GrSurfaceOrigin, GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, GrMesh const*, int)+86) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #17 pc 001c689f /system/lib/libhwui.so (GrGLGpuRTCommandBuffer::onDraw(GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, GrMesh const*, int, SkRect const&)+30) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #18 pc 001858d3 /system/lib/libhwui.so (GrGpuRTCommandBuffer::draw(GrPrimitiveProcessor const&, GrPipeline const&, GrPipeline::FixedDynamicState const*, GrPipeline::DynamicStateArrays const*, GrMesh const*, int, SkRect const&)+166) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #19 pc 00185633 /system/lib/libhwui.so (GrOpFlushState::executeDrawsAndUploadsForMeshDrawOp(GrOp const*, SkRect const&, GrProcessorSet&&, unsigned int, GrUserStencilSettings const*)+310) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #20 pc 003d800f /system/lib/libhwui.so (_ZN12_GLOBAL__N_121ShadowCircularRRectOp9onExecuteEP14GrOpFlushStateRK6SkRectd75113d8bcc59e80cffa524fd584b8c+50) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #21 pc 001b435f /system/lib/libhwui.so (GrOp::execute(GrOpFlushState*, SkRect const&)+50) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #22 pc 001b41bf /system/lib/libhwui.so (GrRenderTargetOpList::onExecute(GrOpFlushState*)+282) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.412 14307 14307 F DEBUG : #23 pc 001f9deb /system/lib/libhwui.so (GrDrawingManager::flush(GrSurfaceProxy*, SkSurface::BackendSurfaceAccess, GrFlushFlags, int, GrBackendSemaphore*, void (*)(void*), void*)+1086) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #24 pc 001f9921 /system/lib/libhwui.so (GrDrawingManager::prepareSurfaceForExternalIO(GrSurfaceProxy*, SkSurface::BackendSurfaceAccess, GrFlushFlags, int, GrBackendSemaphore*, void (*)(void*), void*)+128) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #25 pc 001f97eb /system/lib/libhwui.so (GrRenderTargetContext::prepareForExternalIO(SkSurface::BackendSurfaceAccess, GrFlushFlags, int, GrBackendSemaphore*, void (*)(void*), void*)+86) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #26 pc 001f978b /system/lib/libhwui.so (SkGpuDevice::flush()+22) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #27 pc 001b87fd /system/lib/libhwui.so (android::uirenderer::skiapipeline::SkiaPipeline::renderFrame(android::uirenderer::LayerUpdateQueue const&, SkRect const&, std::__1::vector<android::sp<android::uirenderer::RenderNode>, std::__1::allocator<android::sp<android::uirenderer::RenderNode>>> const&, bool, android::uirenderer::Rect const&, sk_sp<SkSurface>, SkMatrix const&)+140) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #28 pc 001b852b /system/lib/libhwui.so (android::uirenderer::skiapipeline::SkiaOpenGLPipeline::draw(android::uirenderer::renderthread::Frame const&, SkRect const&, SkRect const&, android::uirenderer::LightGeometry const&, android::uirenderer::LayerUpdateQueue*, android::uirenderer::Rect const&, bool, android::uirenderer::LightInfo const&, std::__1::vector<android::sp<android::uirenderer::RenderNode>, std::__1::allocator<android::sp<android::uirenderer::RenderNode>>> const&, android::uirenderer::FrameInfoVisualizer*)+266) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #29 pc 001f4ff5 /system/lib/libhwui.so (android::uirenderer::renderthread::CanvasContext::draw()+236) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #30 pc 001f45c1 /system/lib/libhwui.so (android::uirenderer::renderthread::DrawFrameTask::run()+156) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #31 pc 00202789 /system/lib/libhwui.so (android::uirenderer::WorkQueue::process()+164) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #32 pc 002025e1 /system/lib/libhwui.so (android::uirenderer::renderthread::RenderThread::threadLoop()+72) (BuildId: f865daa467db141161db34e821858eaa)
03-31 07:15:16.413 14307 14307 F DEBUG : #33 pc 0000da2b /system/lib/libutils.so (android::Thread::_threadLoop(void*)+214) (BuildId: abcd5dd14a985ca140ae57aced79ae67)
03-31 07:15:16.413 14307 14307 F DEBUG : #34 pc 000aaa3b /apex/com.android.runtime/lib/bionic/libc.so (__pthread_start(void*)+20) (BuildId: 8549daf46b82d53f76c6449b777e63ee)
03-31 07:15:16.413 14307 14307 F DEBUG : #35 pc 000619b3 /apex/com.android.runtime/lib/bionic/libc.so (__start_thread+30) (BuildId: 8549daf46b82d53f76c6449b777e63ee)
非常感谢您的帮助。谢谢你的时间。
移动设备上的 IIRC 无法保证 Android/iOS 系统会让应用程序永远存在。您的应用很可能被 OS 稍后发送 SIG_ABRT 以释放资源而终止。
还有一种可能是线程过多后OOM。日志报错说明创建线程有问题
可能每个DB连接使用一个线程，线程没有释放，所以过一会就崩溃了。请删除数据库连接并重试。它可能有助于找出问题的根本原因。也尝试记录内存消耗，看看这个长期存在的应用程序是否没有泄漏。
无论如何，我宁愿使用基于 HTTPS+JSON 的 REST 服务进行应用程序通信，而不是臃肿的 DataSnap RAD 客户端。
看来我需要检查我是否处于交互模式。如果我不处于交互模式，那么我必须减少向服务器返回报告的频率。例如，15 分钟而不是 1 分钟。
我在 2021 年 3 月 31 日 14:02:40 启动了应用程序，现在是 2021 年 4 月 6 日 06:11 并且仍然是 运行 。所有其他带有匿名线程等的版本都死了。只有这个工作之间有 15 分钟的工作幸存下来。我在某处读到，如果处于打瞌睡模式，应用程序只能在 10 分钟内执行一次。但似乎想不起在哪里。也许这就是为什么它在 运行 1 分钟间隔两天后被杀死的原因。
代码如下所示：
if isInteractive = true then
SyncPeriod := 1
else
SyncPeriod := 15;
SyncTime:=inireadDt(FilePath+'/Configuration/settings.conf','Tasks','SyncTime');
if MinutesBetween(now,SyncTime) >= SyncPeriod then
begin
if isDeviceIdleMode = false then
begin
BatteryLevel := GetBatteryLevel;
GetWifiStatus;
SendDeviceStatus;
iniwrite(FilePath+'/Configuration/settings.conf','Tasks','SyncTime',now);
end;
end;