• Mikio Hara's avatar
    runtime: make use of THREAD_SHARE userspace mutex on freebsd · ae9b661f
    Mikio Hara authored
    For now Note, futexsleep and futexwakeup are designed for threads,
    not for processes. The explicit use of UMTX_OP_WAIT_UINT_PRIVATE and
    UMTX_OP_WAKE_PRIVATE can avoid unnecessary traversals of VM objects,
    to hit undiscovered bugs related to VM system on SMP/SMT/NUMA
    environment.
    
    Update #7496
    
    LGTM=iant
    R=golang-codereviews, gobot, iant, bradfitz
    CC=golang-codereviews
    https://golang.org/cl/72760043
    ae9b661f
defs_freebsd.go 2.91 KB