diff options
Diffstat (limited to 'prototypes/connections/state.h')
| -rw-r--r-- | prototypes/connections/state.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/prototypes/connections/state.h b/prototypes/connections/state.h index 55474c0..0945475 100644 --- a/prototypes/connections/state.h +++ b/prototypes/connections/state.h @@ -30,6 +30,16 @@ PureResult pure_store_open(const char *path, PureStore **out); void pure_store_close(PureStore *); PureResult pure_store_draft(PureStore *, const char *key, PureDraft **out); PureResult pure_store_state(PureStore *, const char *name, PureDraft **out); +/* Stored extents can outlive their draft: pure_draft_mapping takes a + * reference to the mapping a draft opened through a handle reads its stored + * nodes from (NULL for other drafts). Spans that mapping holds stay readable + * until the reference is released, after the draft closes and after the + * store moves on. Spans of a draft's unsaved edits are not in it. Use it on + * the handle's owner thread. */ +typedef struct PureMapping PureMapping; +PureMapping *pure_draft_mapping(const PureDraft *); +bool pure_mapping_holds(const PureMapping *, PureSpan); +void pure_mapping_release(PureMapping *); /* Pinned, drafts open at the version found when pinning, without checking * the file each time (a host pins for one burst of requests); commits made * through the handle still move it on. */ |