[Opensg-users] Barriers with NPTL

[Michael Babcock]

Is anybody else having problems with Barriers when using Linux kernel 
2.6 and the new posix thread library in recent libc? I just get a 
deadlock with both threads waiting on the same barrier.

I have attached a test program.

--
Michael Babcock
Jim Henson's Creature Shop
#include <OpenSG/OSGThread.h>
#include <OpenSG/OSGBarrier.h>
#include <OpenSG/OSGBaseFunctions.h>
#include <iostream>
using namespace std;

osg::Thread * thread1 = 0;
osg::Thread * thread2 = 0;
osg::Barrier * barrier = 0;

void thread1_fn (void*) {
    int count = 0;
    while (true) {
        barrier->enter(2);
        cout << "thread1\t" << count++ << endl;
    }
}

void thread2_fn (void*) {
    int count = 0;
    while (true) {
        barrier->enter(2);
        cout << "thread2\t" << count++ << endl;
    }
}

int main (int argc, char **argv) {
    osg::osgInit(argc, argv);
    barrier = osg::Barrier::get("Barrier");
    thread1 = osg::Thread::get("Thread1");
    thread2 = osg::Thread::get("Thread2");
    thread1->runFunction(thread1_fn, 0, 0);
    thread2->runFunction(thread2_fn, 0, 0);
    osg::Thread::join(thread1);
    osg::Thread::join(thread2);
}