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Fix a case where we might miss some sweeping

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Unlike next_hole, next_hole_in_block doesn't finish_hole, so it doesn't
clear metadata bits.  Fix to always finish_hole when
finish_sweeping_in_block.
This commit is contained in:
Andy Wingo 2023-11-10 15:07:45 +01:00
parent 40be1a03cb
commit adaffab3da
1 changed files with 2 additions and 4 deletions
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6
src/whippet.c
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@ -2185,15 +2185,13 @@ static size_t next_hole(struct gc_mutator *mut) {
}
static void finish_sweeping_in_block(struct gc_mutator *mut) {
while (next_hole_in_block(mut))
finish_hole(mut);
do { finish_hole(mut); } while (next_hole_in_block(mut));
}
// Another thread is triggering GC. Before we stop, finish clearing the
// dead mark bytes for the mutator's block, and release the block.
static void finish_sweeping(struct gc_mutator *mut) {
while (next_hole(mut))
finish_hole(mut);
while (next_hole(mut)) {}
}
static void trigger_collection(struct gc_mutator *mut,