From: Eric Wong <normalperson@yhbt.net>
Date: Tue, 24 Jun 2014 01:20:30 +0000 (+0000)
Subject: rculfhash: fall back to single-threaded resize on calloc failure
X-Git-Tag: v0.9.0~85
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=7c75d49894833089f34b7e71196e60b2ae5979b1;p=userspace-rcu.git

rculfhash: fall back to single-threaded resize on calloc failure

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

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

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();
 }
 
 /*