Murali Kishore wrote:
Hi ,
We are trying interprocess scenario, one process created shared memory objects and killed and second process open the object using find_or_construct seeing this process blocked at getting lock.
bt as shown below, #0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 #1 0x00007fa6b6733eb6 in _L_lock_941 () from /lib64/libpthread.so.0 #2 0x00007fa6b6733daf in __GI___pthread_mutex_lock (mutex=mutex@entry=0x7fa6b198b070) at ../nptl/pthread_mutex_lock.c:113 #3 0x0000000001bc3822 in lock (this=0x7fa6b198b070) at /x86/include/boost/interprocess/sync/posix/recursive_mutex.hpp:90
Detecting mutexes held by dead processes requires the so-called POSIX robust mutexes. I can see in the Interprocess source code that those are enabled when the macro BOOST_INTERPROCESS_POSIX_ROBUST_MUTEXES is defined. This macro is defined automatically #if (_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L) https://github.com/boostorg/interprocess/blob/29cee9c6067f1d20ddb6421af15977... but I suppose you can also try defining it manually and see if that helps, because _XOPEN_SOURCE and _POSIX_C_SOURCE are also user macros and you probably aren't defining any of them.