* master: (147 commits)
vere: bump version to 0.10.7
libsigsegv: disable stack vma check
vere: bump version to 0.10.6
ci: add travis as trusted user
jets: use appropriate macro
noun: add -C to control memo cache size
jets: restore fond/play/peek hooks
jam: add commented-out functionality to count size of atom
jets: cap memo cache and remove peek, play, and fond jets
noun: add functions to count size of noun
release: urbit-os-v1.0.23
interface/config: fix production build
soto: run +on-load migration once
publish, links: restore full height
sh/build-interface: amend for SPA
interface/CONTRIBUTING: amend for SPA / webpack
solid: update pill
hood + apps: fix OTA process for feat/SPA
hood: add version %6 for %file-server upgrade
chat: equally size both code + s3 buttons
...
* ipc-redux:
behn: optimize bounded timers scry
vere: support saving scry jam to directory
vere: u3_nul in place of c3__null
vere: if behn scry fails, don't try again
vere: rename behn.c's alm -> alm_o
vere: scry out next behn timer for backstop
vere: warn on invalid behn doze
behn: improve scry interface
arvo: allow the empty desk (%$) in scries
vere: add -X flag for running a scry
Instead of potentially waiting ten minutes in the problematic case, we
scry out the next timer from behn and set to that (if we haven't set
a new timer while we were waiting for the scry).
No longer abuse the desk field, instead making use of the path. Reject
any scries outside of the local ship, empty desk and current time as
invalid.
Expose ducts only under a debug endpoint, nothing else should care about
being able to inspect them.
Add scry endpoints for the very next timer (if any), and all timers up
to and including a specified timestamp.
Tries to get a scry result from a /vanecare/desk/path formatted path,
and jams the result to disk (.urb/put/) if it succeeds.
Optionally use -Y to specify a name for the resulting file.
This is a convenient way to count memory usage of noun by simplying
running `(jam 1.337 noun-1 noun-2 ... ~)`. This should
be a hint, but for debugging this is sufficient.
With these changes, about 90% less memory and 15% less time is needed to
compile hoon.hoon. The produced noun is within 3% of the same size,
which suggests this results in little if any duplication.
These are three of the four most commonly hit +ut jets. The other is
+nest, which cannot be un-memoized without taking much longer to compile
(it didn't finish in my test). These four jets combined for 2.3 million
out of the 2.4 million cache entries, the other +ut jets combine for
less than 100k, and literal ~+ accounted for about 50k entries.
This also caps the memo cache at 50k entries. Even with these jets not
memoized, the memo cache grows to 357k entries and 122 MB. Capping at
50k entries has no effect on time and reduces memory usage of the hash
table to about 25MB. Entries are reclaimed with the clock algorithm,
which seems to be sufficient for this use.
