[v8] vgetrandom Linux support azanella/getrandom-vdso-v8

* Added __getrandom_early_init to handle multiples libc.so.  The
  second loaded libc.so will always fallback to syscall.
* Move the vgetrandom parameters to libc.so.
* Remove the internal sys/random.h in favor of getrandom-internal.h.
* Refactor the reserve pointer macros in factor inline functions
  and added some comments.
* Remove the use of __get_nprocs(), instead starts with one page
  only for the opaque states.
* Use atomic_thread_fence_seq_cst instead of atomic_store_relaxed
  for fork synchronization.
* Align opaque state to L1D cache size to avoid false sharing.

0 files changed, 0 insertions, 0 deletions