sleep() is not a pthread cancel point?
OS Version: 5.4
When running sleep(5) in one thread, it cannot be canceled.
After change to usleep(5000000), it can be canceled.
So, is sleep() a pthread cancel point on DragonFlyBSD?
I didn't found any information in related manpages.
The binary I tested is linked to /usr/lib/libpthread.so.0,
which symlink to thread/libthread_xu.so.