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The app model, the tree store and the HTTP host lived in
prototypes/connections among the earlier document runtime, the store was
known only by its format's name, and Vega compiled six Pure sources by path.
Now, as the README's principle has it:
core/ runtime, flow and the app model (module*.c), with what the core
asks of storage (state.h, store.h)
store/ the tree store (PURETRE3, PUREREC1)
serve/ pure-serve: HTTP host, outbound delivery, JSON in place
cli/ pure-run, pure-edit-module
A top-level make builds libpure.a (app model and store, for hosts to link)
and the hosts; make check runs the store's and the app model's tests. The
earlier runtime still builds from prototypes/connections against core/ and
store/ (check, check-tree and check-core pass). Design 009 records the rule:
parts by role behind libraries; git repositories split by coupling, so the
store stays here while its contract moves with the core, and Vega stays apart.
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A read answered with extents of the store mapping was charged nothing,
so clients that stopped reading could keep any number of old file
versions mapped. The runtime core now takes resources a host sends in
pieces: body.data is NULL, body.size is charged like any other resource,
the outcome has no body to read and cannot be forwarded. pure-serve hands
the mapping reference over as such a resource, so a lent answer holds its
bytes of budget until it is in the socket and its ticket releases the
mapping; past the budget a read gets 503 payload_budget, as a copied one
would. The async core grows 52 bytes (5,776 of its 6,144).
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