prng: Add a global fast PRNG object

prop289 needs to have a fast PRNG allocated early in order to avoid creating a fast prng object every time we want to add random to a cell.

changed milestone to %Tor: 0.4.1.x-final

Trac:
Parent Ticket: #26288 (moved)

added actualpoints::.1 component::core tor/tor milestone::Tor: 0.4.1.x-final owner::nickm parent::26288 points::0.1 priority::medium prng prop289 resolution::fixed reviewer::dgoulet severity::normal sponsor::V status::closed tor-relay type::enhancement labels

(this actually wants to be thread-local, for performance reasons)

See branch thread_rng with PR at https://github.com/torproject/tor/pull/714

Trac:
Actualpoints: N/A to .1
Status: assigned to needs_review

lgtm;

Trac:
Status: needs_review to merge_ready

Merged to master!

Trac:
Resolution: N/A to fixed
Status: merge_ready to closed

closed

changed time estimate to 48m

added 48m of time spent

mentioned in issue #29542 (moved)

moved to tpo/core/tor#29536 (closed)