Politics, not-invented-here syndrome, old maintainers. It takes forever to change something in glibc, or the C++ equivalent. There are many kinds of synchroni

Politics, not-invented-here syndrome, old maintainers. It takes forever to change something in glibc, or the C++ equivalent. There are many kinds of synchronization primitives. pthreads only supports a subset. If you are limiting yourself to them, you are most likely leaving performance on the table, but you gain portability.