summaryrefslogtreecommitdiffstats
path: root/rpc/rpc-lib/src/rpc-drc.h
diff options
context:
space:
mode:
Diffstat (limited to 'rpc/rpc-lib/src/rpc-drc.h')
-rw-r--r--rpc/rpc-lib/src/rpc-drc.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/rpc/rpc-lib/src/rpc-drc.h b/rpc/rpc-lib/src/rpc-drc.h
new file mode 100644
index 00000000000..0a1688992d5
--- /dev/null
+++ b/rpc/rpc-lib/src/rpc-drc.h
@@ -0,0 +1,100 @@
+/*
+ Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef RPC_DRC_H
+#define RPC_DRC_H
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "rpcsvc-common.h"
+#include "rpcsvc.h"
+#include "locking.h"
+#include "dict.h"
+#include "rb.h"
+
+/* per-client cache structure */
+struct drc_client {
+ uint32_t ref;
+ union gf_sock_union sock_union;
+ /* pointers to the cache */
+ struct rb_table *rbtree;
+ /* no. of ops currently cached */
+ uint32_t op_count;
+ struct list_head client_list;
+};
+
+struct drc_cached_op {
+ drc_op_state_t state;
+ uint32_t xid;
+ int prognum;
+ int progversion;
+ int procnum;
+ rpc_transport_msg_t msg;
+ drc_client_t *client;
+ struct list_head client_list;
+ struct list_head global_list;
+ int32_t ref;
+};
+
+/* global drc definitions */
+enum drc_status {
+ DRC_UNINITIATED,
+ DRC_INITIATED
+};
+typedef enum drc_status drc_status_t;
+
+struct drc_globals {
+ /* allocator must be the first member since
+ * it is used so in gf_libavl_allocator
+ */
+ struct libavl_allocator allocator;
+ drc_type_t type;
+ /* configurable size parameter */
+ uint32_t global_cache_size;
+ drc_lru_factor_t lru_factor;
+ gf_lock_t lock;
+ drc_status_t status;
+ uint32_t op_count;
+ uint64_t cache_hits;
+ uint64_t intransit_hits;
+ struct mem_pool *mempool;
+ struct list_head cache_head;
+ uint32_t client_count;
+ struct list_head clients_head;
+};
+
+int
+rpcsvc_need_drc (rpcsvc_request_t *req);
+
+drc_cached_op_t *
+rpcsvc_drc_lookup (rpcsvc_request_t *req);
+
+int
+rpcsvc_send_cached_reply (rpcsvc_request_t *req, drc_cached_op_t *reply);
+
+int
+rpcsvc_cache_reply (rpcsvc_request_t *req, struct iobref *iobref,
+ struct iovec *rpchdr, int rpchdrcount,
+ struct iovec *proghdr, int proghdrcount,
+ struct iovec *payload, int payloadcount);
+
+int
+rpcsvc_cache_request (rpcsvc_request_t *req);
+
+int32_t
+rpcsvc_drc_priv (rpcsvc_drc_globals_t *drc);
+
+int
+rpcsvc_drc_init (rpcsvc_t *svc, dict_t *options);
+
+#endif /* RPC_DRC_H */