Dixi quod…
>I guess we should let it use __sync_val_compare_and_swap instead then?
That one’s interesting: it makes an idle-spin instead of busy-spin:
top - 07:26:10 up 11 days, 17:52, 0 users, load average: 0.01, 0.03, 0.05
Tasks: 63 total, 1 running, 62 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni, 0.0 id, 0.0 wa,100.0 hi, 0.0 si, 0.0 st
9234 pts/1 Sl+ 0:00
/tmp/buildd/openjdk-6-6b24-1.11.3/build/bootstrap/jdk1.6.0/bin/java -version
(gdb) bt
#0 0xc004bfba in pthread_join ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
#1 0x80005e9a in ContinueInNewThread (continuation=0x80002cac <JavaMain>,
stack_size=1572864,
args=0xefba4886, ret=0) at ../../../../src/solaris/bin/java_md.c:1754
#2 0x80001f26 in main (argc=1, argv=0x8000a09c) at
../../../../src/share/bin/java.c:370
(gdb) info threads
Id Target Id Frame
3 Thread 0xc07d34c0 (LWP 9235) "java" 0xc004f504 in
pthread_cond_wait@@GLIBC_2.3.2 ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
2 Thread 0xdeeae4c0 (LWP 9236) "java" 0xc004f95c in
pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
* 1 Thread 0xc0192210 (LWP 9234) "java" 0xc004bfba in pthread_join ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
(gdb) thread 2
[Switching to thread 2 (Thread 0xdeeae4c0 (LWP 9236))]
#0 0xc004f95c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
(gdb) bt
#0 0xc004f95c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
#1 0xc0438ace in park (millis=1000, this=0x80062100)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/os/linux/vm/os_linux.cpp:5006
#2 os::PlatformEvent::park (this=0x80062100, millis=1000)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/os/linux/vm/os_linux.cpp:4968
#3 0xc0416888 in ParkCommon (timo=1000, ev=0x80062100)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/mutex.cpp:422
#4 Monitor::IWait (this=0x8000f4e8, Self=0x80061318, timo=1000)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/mutex.cpp:784
#5 0xc0416efe in Monitor::wait (this=0x8000f4e8, no_safepoint_check=true,
timeout=1000,
as_suspend_equivalent=false)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/mutex.cpp:1093
#6 0xc04d395a in VMThread::loop (this=0x80061318)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/vmThread.cpp:408
#7 0xc04d3aba in VMThread::run (this=0x80061318)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/vmThread.cpp:273
#8 0xc0434ff8 in java_start (thread=0x80061318)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/os/linux/vm/os_linux.cpp:856
#9 0xc004b056 in start_thread ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
#10 0xc012829c in clone () from
/var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libc.so.6
(gdb) thread 3
[Switching to thread 3 (Thread 0xc07d34c0 (LWP 9235))]
#0 0xc004f504 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
(gdb) bt
#0 0xc004f504 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
#1 0xc04388cc in os::PlatformEvent::park (this=0x80011d00)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/os/linux/vm/os_linux.cpp:4951
#2 0xc042aca0 in ObjectMonitor::EnterI (this=0xc07d2928,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp:566
#4 0xc0337402 in instanceKlass::initialize_impl (this_oop=...,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:401
#5 0xc0337a06 in initialize (__the_thread__=0x80010008, this=0xdab20588)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:198
#6 instanceKlass::initialize (this=0xdab20588, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:194
#7 0xc02ea576 in Exceptions::new_exception (thread=0x80010008, h_name=...,
signature=...,
args=0xc07d2818, h_cause=..., h_loader=..., h_protection_domain=...)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:269
#8 0xc02ea896 in Exceptions::new_exception (thread=0x80010008, h_name=...,
message=0x0, h_cause=...,
h_loader=..., h_protection_domain=...,
to_utf8_safe=Exceptions::safe_to_utf8)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:353
#9 0xc02eaa76 in Exceptions::_throw_msg (thread=0x80010008,
file=0xc04feaa4
"/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp",
line=1710, h_name=..., message=0x0, h_loader=..., h_protection_domain=...)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:169
#10 0xc02eab60 in Exceptions::_throw_msg (thread=0x80010008,
file=0xc04feaa4
"/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp",
line=1710, name=0xdaaf1e48, message=0x0)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:188
#11 0xc0428cf6 in ObjectMonitor::notifyAll (this=0xc07d2928,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp:1710
#12 0xc0335556 in notify_all (__the_thread__=0x80010008, this=0xc07d2922)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/synchronizer.hpp:158
#13 instanceKlass::set_initialization_state_and_notify_impl (this_oop=...,
state=instanceKlass::initialization_error, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:521
#14 0xc03355de in instanceKlass::set_initialization_state_and_notify
(this=0xdab20588,
state=instanceKlass::initialization_error, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:515
#15 0xc03377b4 in instanceKlass::initialize_impl (this_oop=...,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:458
#16 0xc0337a06 in initialize (__the_thread__=0x80010008, this=0xdab20588)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:198
#17 instanceKlass::initialize (this=0xdab20588, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:194
#18 0xc02ea576 in Exceptions::new_exception (thread=0x80010008, h_name=...,
signature=...,
args=0xc07d2ac8, h_cause=..., h_loader=..., h_protection_domain=...)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:269
#19 0xc02ea896 in Exceptions::new_exception (thread=0x80010008, h_name=...,
message=0x0, h_cause=...,
h_loader=..., h_protection_domain=...,
to_utf8_safe=Exceptions::safe_to_utf8)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:353
#20 0xc02eaa76 in Exceptions::_throw_msg (thread=0x80010008,
file=0xc04feaa4
"/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp",
line=1710, h_name=..., message=0x0, h_loader=..., h_protection_domain=...)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:169
#21 0xc02eab60 in Exceptions::_throw_msg (thread=0x80010008,
file=0xc04feaa4
"/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp",
line=1710, name=0xdaaf1e48, message=0x0)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/utilities/exceptions.cpp:188
#22 0xc0428cf6 in ObjectMonitor::notifyAll (this=0xc07d2bd8,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/objectMonitor.cpp:1710
#23 0xc0335556 in notify_all (__the_thread__=0x80010008, this=0xc07d2bd2)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/synchronizer.hpp:158
#24 instanceKlass::set_initialization_state_and_notify_impl (this_oop=...,
state=instanceKlass::fully_initialized, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:521
#25 0xc03355de in instanceKlass::set_initialization_state_and_notify
(this=0xdaaf67d8,
state=instanceKlass::fully_initialized, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:515
#26 0xc03377fe in instanceKlass::initialize_impl (this_oop=...,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:484
#27 0xc0337a06 in initialize (__the_thread__=0x80010008, this=0xdaaf67d8)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:198
#28 instanceKlass::initialize (this=0xdaaf67d8, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:194
#29 0xc0337752 in instanceKlass::initialize_impl (this_oop=...,
__the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:451
#30 0xc0337a06 in initialize (__the_thread__=0x80010008, this=0xdaafeff0)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:198
#31 instanceKlass::initialize (this=0xdaafeff0, __the_thread__=0x80010008)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/oops/instanceKlass.cpp:194
#32 0xc04a3c84 in initialize_class (__the_thread__=0x80010008, class_name=...)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/thread.cpp:896
#33 Threads::create_vm (args=0xc07d2ed6, canTryAgain=0xc07d2e87)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/runtime/thread.cpp:3164
#34 0xc0371a80 in JNI_CreateJavaVM (vm=0xc07d2ece, penv=0xc07d2ed2,
args=0xc07d2ed6)
at
/tmp/buildd/openjdk-6-6b24-1.11.3/build/openjdk-ecj/hotspot/src/share/vm/prims/jni.cpp:3344
#35 0x80002d20 in InitializeJVM (penv=0xc07d2ed2, pvm=0xc07d2ece,
ifn=<optimized out>)
at ../../../../src/share/bin/java.c:1269
#36 JavaMain (_args=0xefba4886) at ../../../../src/share/bin/java.c:404
#37 0xc004b056 in start_thread ()
from /var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libpthread.so.0
#38 0xc012829c in clone () from
/var/cache/pbuilder/build/cow.20573/lib/m68k-linux-gnu/libc.so.6
Is there something wrong with threads (whatever façette of it)?
bye,
//mirabilos
--
22:20⎜<asarch> The crazy that persists in his craziness becomes a master
22:21⎜<asarch> And the distance between the craziness and geniality is
only measured by the success 18:35⎜<asarch> "Psychotics are consistently
inconsistent. The essence of sanity is to be inconsistently inconsistent
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