Convert the proxy_loop to use unix receive queues

src/generator.c

@@ -407,7 +407,6 @@ retry:
 
 out:
 	kill_server(si);
-	dealloc(buf);
 	return ret;
 }
 
@@ -2515,14 +2514,14 @@ out:
 static int proxy_loop(proc_instance_t *pi)
 {
 	proxy_instance_t *proxi = NULL, *cproxy;
-	int sockd = -1, ret = 0, selret;
-	unixsock_t *us = &pi->us;
 	ckpool_t *ckp = pi->ckp;
 	gdata_t *gdata = ckp->data;
+	unix_msg_t *umsg = NULL;
 	char *buf = NULL;
+	int ret = 0;
 
 reconnect:
-	Close(sockd);
+	clear_unix_msg(&umsg);
 	/* This does not necessarily mean we reconnect, but a change has
 	 * occurred and we need to reexamine the proxies. */
 	cproxy = wait_best_proxy(ckp, gdata);
@@ -2536,28 +2535,17 @@ reconnect:
 		}
 	}
 retry:
-	Close(sockd);
+	clear_unix_msg(&umsg);
 	do {
-		selret = wait_read_select(us->sockd, 5);
-		if (!selret && !ping_main(ckp)) {
+		umsg = get_unix_msg(pi);
+		if (unlikely(!umsg &&!ping_main(ckp))) {
 			LOGEMERG("Generator failed to ping main process, exiting");
 			ret = 1;
 			goto out;
 		}
-	} while (selret < 1);
+	} while (!umsg);
 
-	sockd = accept(us->sockd, NULL, NULL);
-	if (sockd < 0) {
-		LOGEMERG("Failed to accept on proxy socket");
-		ret = 1;
-		goto out;
-	}
-	dealloc(buf);
-	buf = recv_unix_msg(sockd);
-	if (!buf) {
-		LOGWARNING("Failed to get message in proxy_loop");
-		goto retry;
-	}
+	buf = umsg->buf;
 	LOGDEBUG("Proxy received request: %s", buf);
 	if (likely(buf[0] == '{')) {
 		if (ckp->passthrough)
@@ -2572,21 +2560,21 @@ retry:
 				submit_share(gdata, val);
 		}
 	} else if (cmdmatch(buf, "stats")) {
-		send_stats(gdata, sockd);
+		send_stats(gdata, umsg->sockd);
 	} else if (cmdmatch(buf, "list")) {
-		send_list(gdata, sockd);
+		send_list(gdata, umsg->sockd);
 	} else if (cmdmatch(buf, "sublist")) {
-		send_sublist(gdata, sockd, buf + 8);
+		send_sublist(gdata, umsg->sockd, buf + 8);
 	} else if (cmdmatch(buf, "addproxy")) {
-		parse_addproxy(ckp, gdata, sockd, buf + 9);
+		parse_addproxy(ckp, gdata, umsg->sockd, buf + 9);
 	} else if (cmdmatch(buf, "delproxy")) {
-		parse_delproxy(ckp, gdata, sockd, buf + 9);
+		parse_delproxy(ckp, gdata, umsg->sockd, buf + 9);
 	} else if (cmdmatch(buf, "enableproxy")) {
-		parse_ableproxy(gdata, sockd, buf + 12, false);
+		parse_ableproxy(gdata, umsg->sockd, buf + 12, false);
 	} else if (cmdmatch(buf, "disableproxy")) {
-		parse_ableproxy(gdata, sockd, buf + 13, true);
+		parse_ableproxy(gdata, umsg->sockd, buf + 13, true);
 	} else if (cmdmatch(buf, "proxystats")) {
-		parse_proxystats(gdata, sockd, buf + 11);
+		parse_proxystats(gdata, umsg->sockd, buf + 11);
 	} else if (cmdmatch(buf, "shutdown")) {
 		ret = 0;
 		goto out;
@@ -2598,7 +2586,7 @@ retry:
 		sscanf(buf, "loglevel=%d", &ckp->loglevel);
 	} else if (cmdmatch(buf, "ping")) {
 		LOGDEBUG("Proxy received ping request");
-		send_unix_msg(sockd, "pong");
+		send_unix_msg(umsg->sockd, "pong");
 	} else if (cmdmatch(buf, "recruit")) {
 		recruit_subproxy(gdata, buf);
 	} else if (cmdmatch(buf, "dropproxy")) {
@@ -2608,7 +2596,6 @@ retry:
 	}
 	goto retry;
 out:
-	Close(sockd);
 	return ret;
 }