Let a runtime-owned state grow past the document limit

A list's stored form is one value in the tree store, so the limit on a
document (1.38 MiB, what a host carries whole as an HTTP body) capped a
table at about 51,000 rows of 28 bytes. A value the runtime owns, a state
(a key starting with '.') or a draft without a key, may now grow to 1 GiB;
documents keep their limit. The store's format is unchanged: its trees
already reach far past either.

1 files changed, 5 insertions, 0 deletions

diff --git a/core/store.h b/core/store.h
index dbfa8f8..64b8d9e 100644
--- a/core/store.h
+++ b/core/store.h
@@ -5,6 +5,11 @@
 #include <stdint.h>
 
 #define PURE_OBJECT_LIMIT ((2u * 6u + 32u) * 32768u + 8192u)
+/* A document (what a host carries whole, as an HTTP body) is at most
+ * PURE_OBJECT_LIMIT bytes. A value the runtime owns (an app's list or text
+ * state: a key starting with '.', or a draft without a key) may grow to
+ * PURE_STATE_LIMIT: a table of a million rows is one such value. */
+#define PURE_STATE_LIMIT (UINT64_C(1) << 30)
 typedef struct {
     void *mapping;
     size_t mapped_size, object_size;