Beispiel #1
0
/*
 * Thread receives requests from the primary node.
 */
static void *
recv_thread(void *arg)
{
	struct hast_resource *res = arg;
	struct hio *hio;
	struct nv *nv;

	for (;;) {
		pjdlog_debug(2, "recv: Taking free request.");
		QUEUE_TAKE(free, hio);
		pjdlog_debug(2, "recv: (%p) Got request.", hio);
		if (hast_proto_recv_hdr(res->hr_remotein, &nv) < 0) {
			secondary_exit(EX_TEMPFAIL,
			    "Unable to receive request header");
		}
		if (requnpack(res, hio, nv) != 0) {
			nv_free(nv);
			pjdlog_debug(2,
			    "recv: (%p) Moving request to the send queue.",
			    hio);
			QUEUE_INSERT(send, hio);
			continue;
		}
		switch (hio->hio_cmd) {
		case HIO_READ:
			res->hr_stat_read++;
			break;
		case HIO_WRITE:
			res->hr_stat_write++;
			break;
		case HIO_DELETE:
			res->hr_stat_delete++;
			break;
		case HIO_FLUSH:
			res->hr_stat_flush++;
			break;
		case HIO_KEEPALIVE:
			break;
		default:
			PJDLOG_ABORT("Unexpected command (cmd=%hhu).",
			    hio->hio_cmd);
		}
		reqlog(LOG_DEBUG, 2, -1, hio,
		    "recv: (%p) Got request header: ", hio);
		if (hio->hio_cmd == HIO_KEEPALIVE) {
			nv_free(nv);
			pjdlog_debug(2,
			    "recv: (%p) Moving request to the free queue.",
			    hio);
			hio_clear(hio);
			QUEUE_INSERT(free, hio);
			continue;
		} else if (hio->hio_cmd == HIO_WRITE) {
			if (hast_proto_recv_data(res, res->hr_remotein, nv,
			    hio->hio_data, MAXPHYS) < 0) {
				secondary_exit(EX_TEMPFAIL,
				    "Unable to receive request data");
			}
		}
		nv_free(nv);
		pjdlog_debug(2, "recv: (%p) Moving request to the disk queue.",
		    hio);
		QUEUE_INSERT(disk, hio);
	}
	/* NOTREACHED */
	return (NULL);
}
Beispiel #2
0
/*
 * Thread receives requests from the primary node.
 */
static void *
recv_thread(void *arg)
{
	struct hast_resource *res = arg;
	struct hio *hio, *mshio;
	struct nv *nv;

	for (;;) {
		pjdlog_debug(2, "recv: Taking free request.");
		QUEUE_TAKE(free, hio);
		pjdlog_debug(2, "recv: (%p) Got request.", hio);
		if (hast_proto_recv_hdr(res->hr_remotein, &nv) == -1) {
			secondary_exit(EX_TEMPFAIL,
			    "Unable to receive request header");
		}
		if (requnpack(res, hio, nv) != 0) {
			nv_free(nv);
			pjdlog_debug(2,
			    "recv: (%p) Moving request to the send queue.",
			    hio);
			QUEUE_INSERT(send, hio);
			continue;
		}
		switch (hio->hio_cmd) {
		case HIO_READ:
			res->hr_stat_read++;
			break;
		case HIO_WRITE:
			res->hr_stat_write++;
			break;
		case HIO_DELETE:
			res->hr_stat_delete++;
			break;
		case HIO_FLUSH:
			res->hr_stat_flush++;
			break;
		case HIO_KEEPALIVE:
			break;
		default:
			PJDLOG_ABORT("Unexpected command (cmd=%hhu).",
			    hio->hio_cmd);
		}
		reqlog(LOG_DEBUG, 2, -1, hio,
		    "recv: (%p) Got request header: ", hio);
		if (hio->hio_cmd == HIO_KEEPALIVE) {
			nv_free(nv);
			pjdlog_debug(2,
			    "recv: (%p) Moving request to the free queue.",
			    hio);
			hio_clear(hio);
			QUEUE_INSERT(free, hio);
			continue;
		} else if (hio->hio_cmd == HIO_WRITE) {
			if (hast_proto_recv_data(res, res->hr_remotein, nv,
			    hio->hio_data, MAXPHYS) == -1) {
				secondary_exit(EX_TEMPFAIL,
				    "Unable to receive request data");
			}
			if (hio->hio_memsync) {
				/*
				 * For memsync requests we expect two replies.
				 * Clone the hio so we can handle both of them.
				 */
				pjdlog_debug(2, "recv: Taking free request.");
				QUEUE_TAKE(free, mshio);
				pjdlog_debug(2, "recv: (%p) Got request.",
				    mshio);
				hio_copy(hio, mshio);
				mshio->hio_error = 0;
				/*
				 * We want to keep 'memsync' tag only on the
				 * request going onto send queue (mshio).
				 */
				hio->hio_memsync = false;
				pjdlog_debug(2,
				    "recv: (%p) Moving memsync request to the send queue.",
				    mshio);
				QUEUE_INSERT(send, mshio);
			}
		}
		nv_free(nv);
		pjdlog_debug(2, "recv: (%p) Moving request to the disk queue.",
		    hio);
		QUEUE_INSERT(disk, hio);
	}
	/* NOTREACHED */
	return (NULL);
}