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Queue depth and num workers can race, so make sure that we start at least one worker when there are none active for that queue.

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This commit is contained in:
Gregory Burd 2013-07-15 16:51:08 -04:00
parent c3d3d39c36
commit bbadc81d53
1 changed files with 1 additions and 1 deletions
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c_src/async_nif.h
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@ -347,7 +347,7 @@ async_nif_enqueue_req(struct async_nif_state* async_nif, struct async_nif_req_en
/* We've selected a queue for this new request now check to make sure there are /* We've selected a queue for this new request now check to make sure there are
enough workers actively processing requests on this queue. */ enough workers actively processing requests on this queue. */
if (q->depth > q->num_workers) if (q->depth > q->num_workers || q->num_workers == 0)
if (async_nif_start_worker(async_nif, q) == 0) q->num_workers++; if (async_nif_start_worker(async_nif, q) == 0) q->num_workers++;
/* Build the term before releasing the lock so as not to race on the use of /* Build the term before releasing the lock so as not to race on the use of