From ff2e0823e97d10477341192d72f5d9e61d9d5bad Mon Sep 17 00:00:00 2001 From: eunhhu Date: Sun, 18 Oct 2026 23:29:42 +0100 Subject: 027's 4f-2: no fixed count of states: the header's u16 alone (PURE_MODULE_STATES gone); a module's transient and counted states are flags of each, the lists views and functions change or name sets of states (state_words words, a bit each), the verifier's walked lists a list with its length, duplicate names found by sorting them; an app's eighteen arrays of each state (values, texts, lists, the stored lists' slots, the last save's and the burst's, a reader's, an event's values and marks) in one block sized to its module, a replace laying the new module's apart and taking it once nothing can fail; the runtime's lists placed past any state (PURE_LIST_HEARD 0x10000), their slots after the states'; a snapshot's arrays sized so too; pure_app_read false without room (pure-serve then shows none); a save's drafts, values and the tree's revisions on the stack for 64 states, else on the heap; the JIT compiles modules of 32 states at most (its sets a word), the app's lists read through a pointer; a view reads the app's values as they are (no state changes in one), no copy of 32 a evaluation; unit test: 300 states loaded and the last counted; a hole closed: pure_app_stop read the arrays a failed start never laid; PureApp 4,256 bytes, not 8,504; counts: b39b against b38 with batches within 0.06%, without batches knapsack +0.49%, join +0.23%, the rest within 0.17%; the bank's queries (s38 and s39b in turns, three each) field -1.99%, found -1.18%, in_credit -1.10%, large -0.99%, the rest -0.58% to +0.11% (the first build, s39, copied a view's values at run time's size: in_credit +2.4%); 008 and 027 --- serve/serve.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'serve/serve.c') diff --git a/serve/serve.c b/serve/serve.c index 5881ffd..2dca1cb 100644 --- a/serve/serve.c +++ b/serve/serve.c @@ -2279,7 +2279,10 @@ static PureSnapshot *read_newest(PureApp *reader, App *app) { PureSnapshot *snapshot = published->snapshot; if (snapshot) pure_snapshot_hold(snapshot); pthread_mutex_unlock(&published->lock); - if (snapshot) pure_app_read(reader, snapshot); + if (snapshot && !pure_app_read(reader, snapshot)) { /* no room for its states: none shown */ + pure_snapshot_release(snapshot); + snapshot = NULL; + } reader->work_budget = atomic_load_explicit(&app->work, memory_order_relaxed); reader->memory = atomic_load_explicit(&app->memory, memory_order_relaxed); /* what a view's body may add to its own lists */ return snapshot; @@ -2847,7 +2850,11 @@ static PureResult run_query(const Job *job, PureSnapshot *snapshot, Applied *a) return PURE_BUSY; } PureApp reader = {0}; - pure_app_read(&reader, snapshot); + if (!pure_app_read(&reader, snapshot)) { + pure_app_stop(&reader); + let_go_query(held); + return PURE_ALLOCATION; + } if (reader.module != checked && !same_states(&held->module, reader.module)) { /* its app's states are laid out anew */ pure_app_stop(&reader); let_go_query(held); @@ -3178,7 +3185,10 @@ static PureSnapshot *surface_read(PureSurfaceHost *s, PureApp *reader) { PureSnapshot *snapshot = published->snapshot; if (snapshot) pure_snapshot_hold(snapshot); pthread_mutex_unlock(&published->lock); - if (snapshot) pure_app_read(reader, snapshot); + if (snapshot && !pure_app_read(reader, snapshot)) { /* no room for its states: none shown */ + pure_snapshot_release(snapshot); + snapshot = NULL; + } return snapshot; } -- cgit v1.2.3