[AMQCPP-205] CmsTemplate testBasics test can hang

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.1, 2.2.2
• Fix Version/s: 3.0
• Component/s: Integration Tests

Environment

CentOS / REHL

• Assignee: Timothy A. Bish
• Reporter: Timothy A. Bish
• Created: 12/Nov/08 15:42
• Updated: 06/May/09 11:53
• Resolved: 05/May/09 19:32

Description

Running the CmsTemplate integration tests in a loop can result in a hang. The code appears to be deadlocked when two threads that share the same instance of an ActiveMQSessionExecutor are run.

This snippet from a backtrace shows the case:

Thread 3 (Thread 1094732688 (LWP 15620)):
#0  0x40000402 in __kernel_vsyscall ()
#1  0x005ac266 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x4056c327 in apr_thread_cond_wait (cond=0x86813a0, mutex=0x40912ae8) at locks/unix/thread_cond.c:68
#3  0x4031e458 in decaf::util::concurrent::Mutex::wait (this=0x409030c0, millisecs=4294967295) at decaf/util/concurrent/Mutex.cpp:116
#4  0x4031e13e in decaf::util::concurrent::Mutex::wait (this=0x409030c0) at decaf/util/concurrent/Mutex.cpp:82
#5  0x40238268 in activemq::core::ActiveMQSessionExecutor::run (this=0x409030a8) at activemq/core/ActiveMQSessionExecutor.cpp:222
#6  0x4030589f in decaf::lang::Thread::runCallback (self=0x858f488, param=0x40902f08) at decaf/lang/Thread.cpp:121
#7  0x4057aa1c in dummy_worker (opaque=0x858f488) at threadproc/unix/thread.c:142
#8  0x005a846b in start_thread () from /lib/libpthread.so.0
#9  0x004ffdbe in clone () from /lib/libc.so.6

Thread 2 (Thread 1098935184 (LWP 15621)):
#0  0x40000402 in __kernel_vsyscall ()
#1  0x005ac266 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x4056c327 in apr_thread_cond_wait (cond=0x86813d8, mutex=0x40912ae8) at locks/unix/thread_cond.c:68
#3  0x4031e458 in decaf::util::concurrent::Mutex::wait (this=0x409030c0, millisecs=4294967295) at decaf/util/concurrent/Mutex.cpp:116
#4  0x4031e13e in decaf::util::concurrent::Mutex::wait (this=0x409030c0) at decaf/util/concurrent/Mutex.cpp:82
#5  0x40238268 in activemq::core::ActiveMQSessionExecutor::run (this=0x409030a8) at activemq/core/ActiveMQSessionExecutor.cpp:222
#6  0x4030589f in decaf::lang::Thread::runCallback (self=0x858f488, param=0x40902f08) at decaf/lang/Thread.cpp:121
#7  0x4057aa1c in dummy_worker (opaque=0x858f488) at threadproc/unix/thread.c:142
#8  0x005a846b in start_thread () from /lib/libpthread.so.0
#9  0x004ffdbe in clone () from /lib/libc.so.6