I'm encountering problems using multiple threads that log to the same
logger. The following is a simple test I put together to issolate the
problem and a backtrace from the failure. Any suggestions would be
welcome.
Russ
#include "RawStressTest.hh"
#include <cc++/thread.h>
#include <log4cxx/logger.h>
#include <sstream>
namespace test {
using namespace log4cxx;
using namespace std;
/*
* A thread to exercise logging, just log a bunch of messages.
*/
class Worker : public ::ost::Thread {
public:
Worker(string name) {setName(name.c_str());};
void run() {
LoggerPtr logger = Logger::getLogger(string(getName(),0,8));
int i = 0;
while (i++ <= 10000) {
std::ostringstream oss;
oss << " - " << i;
LOG4CXX_INFO(logger, oss.str());
}
}
};
/*
* Creates the test threads, starts them and then joins them.
*/
void RawStressTest::testThreads() {
const int len = 100;
Worker* threadLst[len];
for (int i = 0; i < len; i++) {
std::ostringstream oss;
oss << "Worker_" << i;
threadLst[i] = new Worker(oss.str());
threadLst[i]->start();
}
for (int i = 0; i < len; i++) {
threadLst[i]->join();
}
}
} // end test namespace
int main(int argc, char* argv[]) {
test::RawStressTest test = test::RawStressTest();
test.testThreads();
}
(gdb) bt
#0 0x403bbe01 in kill () from /lib/i686/libc.so.6
#1 0x4034b1ed in pthread_kill () from /lib/i686/libpthread.so.0
#2 0x4034b58b in raise () from /lib/i686/libpthread.so.0
#3 0x403bbba4 in raise () from /lib/i686/libc.so.6
#4 0x403bd05d in abort () from /lib/i686/libc.so.6
#5 0x402ef527 in __cxa_call_unexpected () from /usr/lib/libstdc++.so.5
#6 0x402ef574 in std::terminate () from /usr/lib/libstdc++.so.5
#7 0x402ef6e6 in __cxa_throw () from /usr/lib/libstdc++.so.5
#8 0x402a8eab in std::__throw_length_error () from
/usr/lib/libstdc++.so.5
#9 0x402dface in std::string::reserve () from /usr/lib/libstdc++.so.5
#10 0x402dff82 in std::string::append () from /usr/lib/libstdc++.so.5
#11 0x400ff6e5 in log4cxx::helpers::APRCharsetDecoder::decode
(this=0x8056d28, [EMAIL PROTECTED], [EMAIL PROTECTED]) at
/home/rgm9335/pc_share/CVS-VOB/logging-log4cxx/src/charsetdecoder.cpp:85
#12 0x400deeec in log4cxx::helpers::Transcoder::decode (src=0x809b7cc "
- 130", len=6, [EMAIL PROTECTED]) at
/home/rgm9335/pc_share/CVS-VOB/logging-log4cxx/src/transcoder.cpp:65
#13 0x400dfb11 in decode<std::basic_string<char, std::char_traits<char>,
std::allocator<char> > > ([EMAIL PROTECTED], [EMAIL PROTECTED]) at
transcoder.h:48
#14 0x4017f363 in log4cxx::Logger::forcedLog (this=0x806fe18,
[EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]) at
/home/rgm9335/pc_share/CVS-VOB/logging-log4cxx/src/logger.cpp:106
#15 0x080495ac in test::Worker::run (this=0x80b0c80) at
cpp/RawStressTest.cpp:42
#16 0x402237be in ost::ThreadImpl::ThreadExecHandler (th=0x80b0c80) at
thread.cpp:1110
#17 0x402229bf in ccxx_exec_handler (th=0x80b0c80) at thread.cpp:1136
#18 0x40348e21 in pthread_start_thread () from /lib/i686/libpthread.so.0
#19 0x4047108a in clone () from /lib/i686/libc.so.6
(gdb)
Russ Moul
MMA Mission Software
(253) 657-3036
