Add tracing probes to ISC own isc_rwlock implementation to allow fine-grained tracing. The pthread rwlock already has probes inside glibc, and it's difficult to add probes to headers included from the other libraries.
Add tracing probes to ISC own isc_rwlock implementation to allow fine-grained tracing. The pthread rwlock already has probes inside glibc, and it's difficult to add probes to headers included from the other libraries.