[lttng-dev] [PATCH 1/3] rculfhash: fall back to single-threaded resize on calloc failure

[Eric Wong]

Having a calloc fail on my server should not be fatal.

Signed-off-by: Eric Wong <normalperson at yhbt.net>
---
 rculfhash.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/rculfhash.c b/rculfhash.c
index 7d39388..2a45045 100644
--- a/rculfhash.c
+++ b/rculfhash.c
@@ -1189,7 +1189,10 @@ void partition_resize_helper(struct cds_lfht *ht, unsigned long i,
 	}
 	partition_len = len >> cds_lfht_get_count_order_ulong(nr_threads);
 	work = calloc(nr_threads, sizeof(*work));
-	assert(work);
+	if (!work) {
+		dbg_printf("error allocating for resize, single-threading\n");
+		goto fallback;
+	}
 	for (thread = 0; thread < nr_threads; thread++) {
 		work[thread].ht = ht;
 		work[thread].i = i;
@@ -1205,6 +1208,11 @@ void partition_resize_helper(struct cds_lfht *ht, unsigned long i,
 		assert(!ret);
 	}
 	free(work);
+	return;
+fallback:
+	ht->flavor->thread_online();
+	fct(ht, i, 0, len);
+	ht->flavor->thread_offline();
 }
 
 /*
-- 
2.0.0.259.gbf1bc9c