Hi,
I am working on a client-server application and my server hangs several times. Whenever the hang occurs, everytime the current thread stack is as below:
Thread 1 (Thread 1073860352 (LWP 6053)):
#0 0x0f6fb9e8 in __nanosleep_nocancel () from /lib/tls/libc.so.6
#1 0x0f6fb9d4 in __nanosleep_nocancel () from /lib/tls/libc.so.6
#0 0x0f6fb9e8 in __nanosleep_nocancel () from /lib/tls/libc.so.6

nanosleep is a high resolution sleep. Why does the call stack is absent here and what does a hang in this syscall mean? Is it a known issue?