what does mean by thread suspended in android?

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Today, i find a android system server watch dog. whats my wonder is what's the mean by thread suspended. cpu interrupt ? condition ? or sth other?

"android.bg" prio=5 tid=11 Suspended

   | group="main" sCount=1 dsCount=0 obj=0x12c07ee0 self=0xb9316130

   | sysTid=851 nice=10 cgrp=bg_non_interactive sched=0/0 handle=0xa1a5b930

   | state=S schedstat=( 184530394556 9432479551235 584981 ) utm=8091 stm=10362 core=0 HZ=100

   | stack=0xa1959000-0xa195b000 stackSize=1038KB

   | held mutexes=

   at java.util.ArrayList.get(ArrayList.java:315)

   at com.android.server.power.PowerManagerService.findWakeLockIndexLocked(PowerManagerService.java:1136)

   at com.android.server.power.PowerManagerService.acquireWakeLockInternal(PowerManagerService.java:972)

   - locked <0x0745d2ea> (a java.lang.Object)

   at com.android.server.power.PowerManagerService.-wrap10(PowerManagerService.java:-1)

   at com.android.server.power.PowerManagerService$BinderService.acquireWakeLock(PowerManagerService.java:3502)

   at android.os.PowerManager$WakeLock.acquireLocked(PowerManager.java:1212)

   at android.os.PowerManager$WakeLock.acquire(PowerManager.java:1180)

   - locked <0x065001ee> (a android.os.Binder)

   at com.android.server.LocationManagerService$Receiver.incrementPendingBroadcastsLocked(LocationManagerService.java:1157)

   at com.android.server.LocationManagerService$Receiver.callLocationChangedLocked(LocationManagerService.java:1066)

   - locked <0x0b0fcda8> (a com.android.server.LocationManagerService$Receiver)

   at com.android.server.LocationManagerService.handleLocationChangedLocked(LocationManagerService.java:2546)

   at com.android.server.LocationManagerService.handleLocationChanged(LocationManagerService.java:2637)

   - locked <0x0b5df02c> (a java.lang.Object)

   at com.android.server.LocationManagerService.-wrap4(LocationManagerService.java:-1)

   at com.android.server.LocationManagerService$LocationWorkerHandler.handleMessage(LocationManagerService.java:2606)

   at android.os.Handler.dispatchMessage(Handler.java:111)

   at android.os.Looper.loop(Looper.java:207)

   at android.os.HandlerThread.run(HandlerThread.java:61)







"main" prio=5 tid=1 Blocked

   | group="main" sCount=1 dsCount=0 obj=0x74356b50 self=0xb83b5ba8

   | sysTid=823 nice=-2 cgrp=default sched=0/0 handle=0xb6f45de4

   | state=S schedstat=( 35078771700 49538712267 54500 ) utm=1765 stm=1742 core=1 HZ=100

   | stack=0xbe411000-0xbe413000 stackSize=8MB

   | held mutexes=

   at com.android.server.LocationManagerService.locationCallbackFinished(LocationManagerService.java:1185)

   - waiting to lock <0x0b5df02c> (a java.lang.Object) held by thread 11

   at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:307)

as you can see, main thread was blocked by android.bg with lock 0x0b5df02c. but i don't understand why android.bg thread's state is suspended.

asked Nov 9 at 3:34

user3198183

' 1427: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms 1428: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms'
– user3198183
Nov 9 at 3:43

root 102 2 0 0 2 20 0 0 0 fg dpmgr_wait 00000000 S display_check_a
– user3198183
Nov 9 at 3:46

add a comment |

up vote
0
down vote

favorite

Today, i find a android system server watch dog. whats my wonder is what's the mean by thread suspended. cpu interrupt ? condition ? or sth other?

"android.bg" prio=5 tid=11 Suspended

   | group="main" sCount=1 dsCount=0 obj=0x12c07ee0 self=0xb9316130

   | sysTid=851 nice=10 cgrp=bg_non_interactive sched=0/0 handle=0xa1a5b930

   | state=S schedstat=( 184530394556 9432479551235 584981 ) utm=8091 stm=10362 core=0 HZ=100

   | stack=0xa1959000-0xa195b000 stackSize=1038KB

   | held mutexes=

   at java.util.ArrayList.get(ArrayList.java:315)

   at com.android.server.power.PowerManagerService.findWakeLockIndexLocked(PowerManagerService.java:1136)

   at com.android.server.power.PowerManagerService.acquireWakeLockInternal(PowerManagerService.java:972)

   - locked <0x0745d2ea> (a java.lang.Object)

   at com.android.server.power.PowerManagerService.-wrap10(PowerManagerService.java:-1)

   at com.android.server.power.PowerManagerService$BinderService.acquireWakeLock(PowerManagerService.java:3502)

   at android.os.PowerManager$WakeLock.acquireLocked(PowerManager.java:1212)

   at android.os.PowerManager$WakeLock.acquire(PowerManager.java:1180)

   - locked <0x065001ee> (a android.os.Binder)

   at com.android.server.LocationManagerService$Receiver.incrementPendingBroadcastsLocked(LocationManagerService.java:1157)

   at com.android.server.LocationManagerService$Receiver.callLocationChangedLocked(LocationManagerService.java:1066)

   - locked <0x0b0fcda8> (a com.android.server.LocationManagerService$Receiver)

   at com.android.server.LocationManagerService.handleLocationChangedLocked(LocationManagerService.java:2546)

   at com.android.server.LocationManagerService.handleLocationChanged(LocationManagerService.java:2637)

   - locked <0x0b5df02c> (a java.lang.Object)

   at com.android.server.LocationManagerService.-wrap4(LocationManagerService.java:-1)

   at com.android.server.LocationManagerService$LocationWorkerHandler.handleMessage(LocationManagerService.java:2606)

   at android.os.Handler.dispatchMessage(Handler.java:111)

   at android.os.Looper.loop(Looper.java:207)

   at android.os.HandlerThread.run(HandlerThread.java:61)







"main" prio=5 tid=1 Blocked

   | group="main" sCount=1 dsCount=0 obj=0x74356b50 self=0xb83b5ba8

   | sysTid=823 nice=-2 cgrp=default sched=0/0 handle=0xb6f45de4

   | state=S schedstat=( 35078771700 49538712267 54500 ) utm=1765 stm=1742 core=1 HZ=100

   | stack=0xbe411000-0xbe413000 stackSize=8MB

   | held mutexes=

   at com.android.server.LocationManagerService.locationCallbackFinished(LocationManagerService.java:1185)

   - waiting to lock <0x0b5df02c> (a java.lang.Object) held by thread 11

   at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:307)

as you can see, main thread was blocked by android.bg with lock 0x0b5df02c. but i don't understand why android.bg thread's state is suspended.

asked Nov 9 at 3:34

user3198183

' 1427: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms 1428: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms'
– user3198183
Nov 9 at 3:43

root 102 2 0 0 2 20 0 0 0 fg dpmgr_wait 00000000 S display_check_a
– user3198183
Nov 9 at 3:46

add a comment |

up vote
0
down vote

favorite

Today, i find a android system server watch dog. whats my wonder is what's the mean by thread suspended. cpu interrupt ? condition ? or sth other?

"android.bg" prio=5 tid=11 Suspended

   | group="main" sCount=1 dsCount=0 obj=0x12c07ee0 self=0xb9316130

   | sysTid=851 nice=10 cgrp=bg_non_interactive sched=0/0 handle=0xa1a5b930

   | state=S schedstat=( 184530394556 9432479551235 584981 ) utm=8091 stm=10362 core=0 HZ=100

   | stack=0xa1959000-0xa195b000 stackSize=1038KB

   | held mutexes=

   at java.util.ArrayList.get(ArrayList.java:315)

   at com.android.server.power.PowerManagerService.findWakeLockIndexLocked(PowerManagerService.java:1136)

   at com.android.server.power.PowerManagerService.acquireWakeLockInternal(PowerManagerService.java:972)

   - locked <0x0745d2ea> (a java.lang.Object)

   at com.android.server.power.PowerManagerService.-wrap10(PowerManagerService.java:-1)

   at com.android.server.power.PowerManagerService$BinderService.acquireWakeLock(PowerManagerService.java:3502)

   at android.os.PowerManager$WakeLock.acquireLocked(PowerManager.java:1212)

   at android.os.PowerManager$WakeLock.acquire(PowerManager.java:1180)

   - locked <0x065001ee> (a android.os.Binder)

   at com.android.server.LocationManagerService$Receiver.incrementPendingBroadcastsLocked(LocationManagerService.java:1157)

   at com.android.server.LocationManagerService$Receiver.callLocationChangedLocked(LocationManagerService.java:1066)

   - locked <0x0b0fcda8> (a com.android.server.LocationManagerService$Receiver)

   at com.android.server.LocationManagerService.handleLocationChangedLocked(LocationManagerService.java:2546)

   at com.android.server.LocationManagerService.handleLocationChanged(LocationManagerService.java:2637)

   - locked <0x0b5df02c> (a java.lang.Object)

   at com.android.server.LocationManagerService.-wrap4(LocationManagerService.java:-1)

   at com.android.server.LocationManagerService$LocationWorkerHandler.handleMessage(LocationManagerService.java:2606)

   at android.os.Handler.dispatchMessage(Handler.java:111)

   at android.os.Looper.loop(Looper.java:207)

   at android.os.HandlerThread.run(HandlerThread.java:61)







"main" prio=5 tid=1 Blocked

   | group="main" sCount=1 dsCount=0 obj=0x74356b50 self=0xb83b5ba8

   | sysTid=823 nice=-2 cgrp=default sched=0/0 handle=0xb6f45de4

   | state=S schedstat=( 35078771700 49538712267 54500 ) utm=1765 stm=1742 core=1 HZ=100

   | stack=0xbe411000-0xbe413000 stackSize=8MB

   | held mutexes=

   at com.android.server.LocationManagerService.locationCallbackFinished(LocationManagerService.java:1185)

   - waiting to lock <0x0b5df02c> (a java.lang.Object) held by thread 11

   at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:307)

as you can see, main thread was blocked by android.bg with lock 0x0b5df02c. but i don't understand why android.bg thread's state is suspended.

asked Nov 9 at 3:34

user3198183

Today, i find a android system server watch dog. whats my wonder is what's the mean by thread suspended. cpu interrupt ? condition ? or sth other?

"android.bg" prio=5 tid=11 Suspended

   | group="main" sCount=1 dsCount=0 obj=0x12c07ee0 self=0xb9316130

   | sysTid=851 nice=10 cgrp=bg_non_interactive sched=0/0 handle=0xa1a5b930

   | state=S schedstat=( 184530394556 9432479551235 584981 ) utm=8091 stm=10362 core=0 HZ=100

   | stack=0xa1959000-0xa195b000 stackSize=1038KB

   | held mutexes=

   at java.util.ArrayList.get(ArrayList.java:315)

   at com.android.server.power.PowerManagerService.findWakeLockIndexLocked(PowerManagerService.java:1136)

   at com.android.server.power.PowerManagerService.acquireWakeLockInternal(PowerManagerService.java:972)

   - locked <0x0745d2ea> (a java.lang.Object)

   at com.android.server.power.PowerManagerService.-wrap10(PowerManagerService.java:-1)

   at com.android.server.power.PowerManagerService$BinderService.acquireWakeLock(PowerManagerService.java:3502)

   at android.os.PowerManager$WakeLock.acquireLocked(PowerManager.java:1212)

   at android.os.PowerManager$WakeLock.acquire(PowerManager.java:1180)

   - locked <0x065001ee> (a android.os.Binder)

   at com.android.server.LocationManagerService$Receiver.incrementPendingBroadcastsLocked(LocationManagerService.java:1157)

   at com.android.server.LocationManagerService$Receiver.callLocationChangedLocked(LocationManagerService.java:1066)

   - locked <0x0b0fcda8> (a com.android.server.LocationManagerService$Receiver)

   at com.android.server.LocationManagerService.handleLocationChangedLocked(LocationManagerService.java:2546)

   at com.android.server.LocationManagerService.handleLocationChanged(LocationManagerService.java:2637)

   - locked <0x0b5df02c> (a java.lang.Object)

   at com.android.server.LocationManagerService.-wrap4(LocationManagerService.java:-1)

   at com.android.server.LocationManagerService$LocationWorkerHandler.handleMessage(LocationManagerService.java:2606)

   at android.os.Handler.dispatchMessage(Handler.java:111)

   at android.os.Looper.loop(Looper.java:207)

   at android.os.HandlerThread.run(HandlerThread.java:61)







"main" prio=5 tid=1 Blocked

   | group="main" sCount=1 dsCount=0 obj=0x74356b50 self=0xb83b5ba8

   | sysTid=823 nice=-2 cgrp=default sched=0/0 handle=0xb6f45de4

   | state=S schedstat=( 35078771700 49538712267 54500 ) utm=1765 stm=1742 core=1 HZ=100

   | stack=0xbe411000-0xbe413000 stackSize=8MB

   | held mutexes=

   at com.android.server.LocationManagerService.locationCallbackFinished(LocationManagerService.java:1185)

   - waiting to lock <0x0b5df02c> (a java.lang.Object) held by thread 11

   at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:307)

as you can see, main thread was blocked by android.bg with lock 0x0b5df02c. but i don't understand why android.bg thread's state is suspended.

android multithreading locking watchdog suspend

asked Nov 9 at 3:34

user3198183

asked Nov 9 at 3:34

user3198183

asked Nov 9 at 3:34

user3198183

asked Nov 9 at 3:34

user3198183

asked Nov 9 at 3:34

user3198183

' 1427: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms 1428: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms'
– user3198183
Nov 9 at 3:43

root 102 2 0 0 2 20 0 0 0 fg dpmgr_wait 00000000 S display_check_a
– user3198183
Nov 9 at 3:46

add a comment |

' 1427: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms 1428: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms'
– user3198183
Nov 9 at 3:43

root 102 2 0 0 2 20 0 0 0 fg dpmgr_wait 00000000 S display_check_a
– user3198183
Nov 9 at 3:46

' 1427: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms 1428: 851,( 102, 1, 0x000002a3c000, 1, 0, 24),(00, 04),( 0ns , 0, 0),(15170.821608, 31us, 13ms, 81us, 13ms), 13ms'
– user3198183
Nov 9 at 3:43

root 102 2 0 0 2 20 0 0 0 fg dpmgr_wait 00000000 S display_check_a
– user3198183
Nov 9 at 3:46

add a comment |

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