Interpocess: managed shared memory failing completely under OS X

[jkp@…]

I haven't got the details with me now but simply trying to build and run the managed shared memory test under os x fails upon run atm.

Seems like there might be an initialised internal mutex.

Take a look or get back to me if you need more info.

[samalone@…]

Code to reproduce this bug

[samalone@…]

I believe that I have encountered the same problem, and have a test case that consistently demonstrates the bug. I have attached the code as "Test.cpp". If you compile and run this program as-is, it will consistently fail with a bus-error, assertion failure, or infinite loop.

If you compile the test program with -DEXTRA_MUTEX, the code wraps the managed_shared_memory calls with an extra scoped_lock<named_mutex>. This works around the bug, so it certainly seems that the internal mutex in the managed_shared_memory class is being ineffective.

My computer is a PowerBook G4 running Mac OS X Leopard 10.5.3. The compiler is powerpc-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5465). I have not tried my test case on other platforms.

[anonymous]

Modified inteprocess mutex emulation in UNIX systems. Revision 51971.