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| author | Ben Gamari <ben@smart-cactus.org> | 2022-12-04 16:18:47 -0500 |
|---|---|---|
| committer | Zubin Duggal <zubin.duggal@gmail.com> | 2023-02-08 19:05:11 +0530 |
| commit | 764145d7e2689247084f99211229df4b1097ae1f (patch) | |
| tree | f5d257f9c0a03eaa78cbea47f3500847ebbb3b88 | |
| parent | 639329fecd5fa7c91ff6adbc4ab85f83538511f9 (diff) | |
| download | haskell-764145d7e2689247084f99211229df4b1097ae1f.tar.gz | |
nonmoving: Add missing no-op in busy-wait loop
(cherry picked from commit 9f931a8801c84b8ae473f91349e144eebc73b415)
| -rw-r--r-- | rts/sm/NonMovingMark.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/rts/sm/NonMovingMark.c b/rts/sm/NonMovingMark.c index 5fe76f3e6f..2b1b9c7d68 100644 --- a/rts/sm/NonMovingMark.c +++ b/rts/sm/NonMovingMark.c @@ -1310,8 +1310,11 @@ mark_closure (MarkQueue *queue, const StgClosure *p0, StgClosure **origin) goto done; case WHITEHOLE: - while (*(StgInfoTable* volatile*) &p->header.info == &stg_WHITEHOLE_info); - // busy_wait_nop(); // FIXME + while (*(StgInfoTable* volatile*) &p->header.info == &stg_WHITEHOLE_info) +#if defined(PARALLEL_GC) + busy_wait_nop() +#endif + ; goto try_again; default: |