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authorLennart Poettering <lennart@poettering.net>2014-08-12 19:29:38 +0200
committerLennart Poettering <lennart@poettering.net>2014-08-12 19:30:18 +0200
commit96c76ac49c28ba397fc8db3a40505b875c65ef16 (patch)
tree53c723e61349da92cc50b0c58bfe3f08d5087386 /src/libsystemd/sd-resolve/sd-resolve.c
parent85529c815b47c22839e0f148af67fd37e977cbfa (diff)
sd-resolve: scale number of threads by queries currently being processed, rather than number of queries currently referenced
This way a query that blocks for a longer time, and whose reference has been dropped won't block subsequent lookups from finishing.
Diffstat (limited to 'src/libsystemd/sd-resolve/sd-resolve.c')
-rw-r--r--src/libsystemd/sd-resolve/sd-resolve.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/src/libsystemd/sd-resolve/sd-resolve.c b/src/libsystemd/sd-resolve/sd-resolve.c
index 15f1938639..fea695fcf9 100644
--- a/src/libsystemd/sd-resolve/sd-resolve.c
+++ b/src/libsystemd/sd-resolve/sd-resolve.c
@@ -87,7 +87,7 @@ struct sd_resolve {
unsigned current_id;
sd_resolve_query* query_array[QUERIES_MAX];
- unsigned n_queries, n_done;
+ unsigned n_queries, n_done, n_outstanding;
sd_event_source *event_source;
sd_event *event;
@@ -526,7 +526,7 @@ static int start_threads(sd_resolve *resolve, unsigned extra) {
unsigned n;
int r;
- n = resolve->n_queries + extra - resolve->n_done;
+ n = resolve->n_outstanding + extra;
n = CLAMP(n, WORKERS_MIN, WORKERS_MAX);
while (resolve->n_valid_workers < n) {
@@ -854,6 +854,9 @@ static int handle_response(sd_resolve *resolve, const Packet *packet, size_t len
return 0;
}
+ assert(resolve->n_outstanding > 0);
+ resolve->n_outstanding--;
+
q = lookup_query(resolve, resp->id);
if (!q)
return 0;
@@ -1099,6 +1102,8 @@ _public_ int sd_resolve_getaddrinfo(
return -errno;
}
+ resolve->n_outstanding++;
+
if (_q)
*_q = q;
@@ -1167,6 +1172,8 @@ _public_ int sd_resolve_getnameinfo(
return -errno;
}
+ resolve->n_outstanding++;
+
if (_q)
*_q = q;
@@ -1231,6 +1238,8 @@ static int resolve_res(
return -errno;
}
+ resolve->n_outstanding++;
+
if (_q)
*_q = q;