[PATCH v2 09/10] reftable/stack: reorder swapping in the reloaded stack contents
From: Patrick Steinhardt <hidden>
Date: 2024-08-23 14:12:58
Subsystem:
the rest · Maintainer:
Linus Torvalds
The code flow of how we swap in the reloaded stack contents is somewhat convoluted because we switch back and forth between swapping in different parts of the stack. Reorder the code to simplify it. We now first close and unlink the old tables which do not get reused before we update the stack to point to the new stack. Signed-off-by: Patrick Steinhardt <redacted> --- reftable/stack.c | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-)
diff --git a/reftable/stack.c b/reftable/stack.c
index 8e85f8b4d99..02472222589 100644
--- a/reftable/stack.c
+++ b/reftable/stack.c@@ -273,30 +273,34 @@ static int reftable_stack_reload_once(struct reftable_stack *st, if (err < 0) goto done; - st->readers_len = new_readers_len; - if (st->merged) - reftable_merged_table_free(st->merged); - if (st->readers) { - reftable_free(st->readers); - } - st->readers = new_readers; - new_readers = NULL; - new_readers_len = 0; - - new_merged->suppress_deletions = 1; - st->merged = new_merged; + /* + * Close the old, non-reused readers and proactively try to unlink + * them. This is done for systems like Windows, where the underlying + * file of such an open reader wouldn't have been possible to be + * unlinked by the compacting process. + */ for (i = 0; i < cur_len; i++) { if (cur[i]) { const char *name = reader_name(cur[i]); stack_filename(&table_path, st, name); - reftable_reader_decref(cur[i]); - - /* On Windows, can only unlink after closing. */ unlink(table_path.buf); } } + /* Update the stack to point to the new tables. */ + if (st->merged) + reftable_merged_table_free(st->merged); + new_merged->suppress_deletions = 1; + st->merged = new_merged; + + if (st->readers) + reftable_free(st->readers); + st->readers = new_readers; + st->readers_len = new_readers_len; + new_readers = NULL; + new_readers_len = 0; + done: for (i = 0; i < new_readers_len; i++) reftable_reader_decref(new_readers[i]);
--
2.46.0.164.g477ce5ccd6.dirty