Some changes to support asynchronous fetching of inodes.

[bluesky.git] / nfs3 / rpc.c

diff --git a/nfs3/rpc.c b/nfs3/rpc.c
index a7d108c..07c5d93 100644 (file)
--- a/nfs3/rpc.c
+++ b/nfs3/rpc.c
@@ -195,10 +195,12 @@ async_rpc_send_failure(RPCRequest *req, enum accept_stat stat)
     header.verf_len = 0;
     header.accept_stat = htonl(stat);
 
+    g_mutex_lock(req->connection->send_lock);
     uint32_t fragment = htonl(sizeof(header) | 0x80000000);
     async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
     async_rpc_write(req->connection, (const char *)&header, sizeof(header));
     g_io_channel_flush(req->connection->channel, NULL);
+    g_mutex_unlock(req->connection->send_lock);
 
     if (req->args != NULL) {
         char buf[4];
@@ -244,12 +246,14 @@ async_rpc_send_reply(RPCRequest *req, void *result)
     header.verf_len = 0;
     header.accept_stat = 0;
 
+    g_mutex_lock(req->connection->send_lock);
     gsize msg_size = str->len;
     uint32_t fragment = htonl((msg_size + sizeof(header)) | 0x80000000);
     async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
     async_rpc_write(req->connection, (const char *)&header, sizeof(header));
     async_rpc_write(req->connection, str->str, str->len);
     g_io_channel_flush(req->connection->channel, NULL);
+    g_mutex_unlock(req->connection->send_lock);
 
     time_end = bluesky_now_hires();
 
@@ -281,6 +285,31 @@ async_rpc_send_reply(RPCRequest *req, void *result)
     g_free(req);
 }
 
+static const char *nfs_proc_names[] = {
+    [NFSPROC3_NULL] = "NULL",
+    [NFSPROC3_GETATTR] = "GETATTR",
+    [NFSPROC3_SETATTR] = "SETATTR",
+    [NFSPROC3_LOOKUP] = "LOOKUP",
+    [NFSPROC3_ACCESS] = "ACCESS",
+    [NFSPROC3_READLINK] = "READLINK",
+    [NFSPROC3_READ] = "READ",
+    [NFSPROC3_WRITE] = "WRITE",
+    [NFSPROC3_CREATE] = "CREATE",
+    [NFSPROC3_MKDIR] = "MKDIR",
+    [NFSPROC3_SYMLINK] = "SYMLINK",
+    [NFSPROC3_MKNOD] = "MKNOD",
+    [NFSPROC3_REMOVE] = "REMOVE",
+    [NFSPROC3_RMDIR] = "RMDIR",
+    [NFSPROC3_RENAME] = "RENAME",
+    [NFSPROC3_LINK] = "LINK",
+    [NFSPROC3_READDIR] = "READDIR",
+    [NFSPROC3_READDIRPLUS] = "READDIRPLUS",
+    [NFSPROC3_FSSTAT] = "FSSTAT",
+    [NFSPROC3_FSINFO] = "FSINFO",
+    [NFSPROC3_PATHCONF] = "PATHCONF",
+    [NFSPROC3_COMMIT] = "COMMIT",
+};
+
 static void
 nfs_program_3(RPCRequest *req)
 {
@@ -316,7 +345,12 @@ nfs_program_3(RPCRequest *req)
     xdrproc_t _xdr_argument, _xdr_result;
     char *(*local)(char *, RPCRequest *);
 
-    printf("Dispatched NFS RPC message type %d\n", req->req_proc);
+    if (req->req_proc < sizeof(nfs_proc_names) / sizeof(const char *)) {
+        printf("Dispatched NFS RPC message type %s\n",
+               nfs_proc_names[req->req_proc]);
+    } else {
+        printf("Dispatched unknown NFS RPC message type %d\n", req->req_proc);
+    }
 
     switch (req->req_proc) {
     case NFSPROC3_NULL:
@@ -482,17 +516,26 @@ nfs_program_3(RPCRequest *req)
 static GMainContext *main_context;
 static GMainLoop *main_loop;
 
+static GThreadPool *rpc_thread_pool;
+
 static gboolean async_flushd(gpointer data)
 {
     bluesky_flushd_invoke(fs);
     return TRUE;
 }
 
+static void async_rpc_task(gpointer data, gpointer user_data)
+{
+    nfs_program_3((RPCRequest *)data);
+}
+
 static async_rpc_init()
 {
     main_context = g_main_context_new();
     main_loop = g_main_loop_new(main_context, FALSE);
 
+    rpc_thread_pool = g_thread_pool_new(async_rpc_task, NULL, -1, FALSE, NULL);
+
     /* Arrange to have the cache writeback code run every five seconds. */
     GSource *source = g_timeout_source_new_seconds(5);
     g_source_set_callback(source, async_flushd, NULL, NULL);
@@ -579,7 +622,7 @@ static gboolean async_rpc_dispatch(RPCConnection *rpc)
     req->req_proc = ntohl(header->proc);
     rpc->msgbuf = g_string_new("");
 
-    nfs_program_3(req);
+    g_thread_pool_push(rpc_thread_pool, req, NULL);
 
     return TRUE;
 }
@@ -651,6 +694,7 @@ static gboolean async_rpc_do_read(GIOChannel *channel,
         fprintf(stderr, "Unexpected error or end of file on RPC stream %d!\n",
                 g_io_channel_unix_get_fd(rpc->channel));
         g_io_channel_shutdown(rpc->channel, TRUE, NULL);
+        /* TODO: Clean up connection object. */
         return FALSE;
     }
 
@@ -709,6 +753,7 @@ static gboolean async_rpc_do_accept(GIOChannel *channel,
     rpc->channel = g_io_channel_unix_new(nfd);
     rpc->msgbuf = g_string_new("");
     g_io_channel_set_encoding(rpc->channel, NULL, NULL);
+    rpc->send_lock = g_mutex_new();
     GSource *source = g_io_create_watch(rpc->channel, G_IO_IN);
     g_source_set_callback(source, (GSourceFunc)async_rpc_do_read,
                           rpc, NULL);