On 04/08/2015 05:09 PM, barry.barn...@wellsfargo.com wrote: > > Can you tell me if you have ActiveMQ-CPP expertise? I'm seeking help for > questions such as this one: Can you describe what is going on in ActiveMQ-CPP > thread and connection management that allows the scenario in the stack trace > below to occur, where we have an SSL handshake being attempted for a Producer > connection, in a spawned off thread? Based on the way I think activemq > normally works, threads for new (SSL) connections are ordinarily only spawned > off once the (SSL) connection is complete. > > > > Thread 17 (Thread 0x95ceb70 (LWP 8241)): > #0 0x005c7430 in __kernel_vsyscall () > #1 0x093df5fb in read () from /lib/libpthread.so.0 > #2 0x088096a8 in ?? () from /usr/lib/libcrypto.so.6 > #3 0x0880772e in BIO_read () from /usr/lib/libcrypto.so.6 > #4 0x009d011c in ssl23_read_bytes () from /usr/lib/libssl.so.6 > #5 0x009cf24c in ssl23_connect () from /usr/lib/libssl.so.6 > #6 0x009db6fb in SSL_connect () from /usr/lib/libssl.so.6 > #7 0xf72708fa in > decaf::internal::net::ssl::openssl::OpenSSLSocket::startHandshake() () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #8 0xf72710bc in > decaf::internal::net::ssl::openssl::OpenSSLSocket::read(unsigned char*, int, > int, int) () from /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #9 0xf7273ef3 in > decaf::internal::net::ssl::openssl::OpenSSLSocketInputStream::doReadArrayBounded(unsigned > char*, int, int, int) () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #10 0xf72e0b1f in decaf::io::InputStream::doReadArray(unsigned char*, int) () > from /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #11 0xf72e0488 in decaf::io::InputStream::read(unsigned char*, int) () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #12 0xf72d4080 in > decaf::io::BufferedInputStream::bufferData(decaf::io::InputStream*, unsigned > char*&) () from /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #13 0xf72d39a5 in decaf::io::BufferedInputStream::doReadArrayBounded(unsigned > char*, int, int, int) () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #14 0xf72e0614 in decaf::io::InputStream::read(unsigned char*, int, int, int) > () from /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #15 0xf72da586 in decaf::io::DataInputStream::readAllData(unsigned char*, > int) () from /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #16 0xf72d840e in decaf::io::DataInputStream::readInt() () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #17 0xf71f1514 in > activemq::wireformat::openwire::OpenWireFormat::unmarshal(activemq::transport::Transport > const*, decaf::io::DataInputStream*) () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #18 0xf713b032 in activemq::transport::IOTransport::run() () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #19 0xf72ff0ee in decaf::lang::Thread::run() () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #20 0xf72b8e1b in (anonymous namespace)::runCallback(void*) () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #21 0xf72b8dcb in (anonymous namespace)::threadEntryMethod(void*) () from > /tvapps/PSL/psl/activemq/lib/libactivemq-cpp.so.17 > #22 0x093d8b39 in start_thread () from /lib/libpthread.so.0 > #23 0x08acbc2e in clone () from /lib/libc.so.6 > > > > Regards, > > Barry Barnett > Enterprise Queuing Services | QS4U > Cell: 803-207-7452 Every TcpTransport instance uses a background thread for socket reads, that is what you see here.
-- Tim Bish Sr Software Engineer | RedHat Inc. tim.b...@redhat.com | www.redhat.com twitter: @tabish121 blog: http://timbish.blogspot.com/
