diff options
| -rw-r--r-- | lib/tsocket/tsocket_helpers.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/tsocket/tsocket_helpers.c b/lib/tsocket/tsocket_helpers.c index 1b92b9f82c..49c6840f87 100644 --- a/lib/tsocket/tsocket_helpers.c +++ b/lib/tsocket/tsocket_helpers.c @@ -215,6 +215,20 @@ static void tstream_readv_pdu_ask_for_next_vector(struct tevent_req *req) size_t to_read = 0; size_t i; struct tevent_req *subreq; + bool optimize = false; + bool save_optimize = false; + + if (state->count > 0) { + /* + * This is not the first time we asked for a vector, + * which means parts of the pdu already arrived. + * + * In this case it make sense to enable + * a syscall/performance optimization if the + * low level tstream implementation supports it. + */ + optimize = true; + } TALLOC_FREE(state->vector); state->count = 0; @@ -258,11 +272,26 @@ static void tstream_readv_pdu_ask_for_next_vector(struct tevent_req *req) return; } + if (optimize) { + /* + * If the low level stream is a bsd socket + * we will get syscall optimization. + * + * If it is not a bsd socket + * tstream_bsd_optimize_readv() just returns. + */ + save_optimize = tstream_bsd_optimize_readv(state->caller.stream, + true); + } subreq = tstream_readv_send(state, state->caller.ev, state->caller.stream, state->vector, state->count); + if (optimize) { + tstream_bsd_optimize_readv(state->caller.stream, + save_optimize); + } if (tevent_req_nomem(subreq, req)) { return; } |