Add server.[ch]

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/server.h b/src/server.h
new file mode 100644
index 0000000..fa5552d
--- /dev/null
+++ b/src/server.h
@@ -0,0 +1,90 @@
+/**
+ * gammad -- Cooperative gamma server
+ * Copyright (C) 2016  Mattias Andrée (maandree@kth.se)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "message.h"
+
+#include <stddef.h>
+
+
+
+/**
+ * List of all client's file descriptors
+ * 
+ * Unused slots, with index less than `connections_used`,
+ * should have the value -1 (negative)
+ */
+extern int* connections;
+
+/**
+ * The number of elements allocated for `connections`
+ */
+extern size_t connections_alloc;
+
+/**
+ * The index of the first unused slot in `connections`
+ */
+extern size_t connections_ptr;
+
+/**
+ * The index of the last used slot in `connections`, plus 1
+ */
+extern size_t connections_used;
+
+/**
+ * The server connection's message buffer
+ */
+extern struct message server_message;
+
+/**
+ * The clients' connections' message buffers
+ */
+extern struct message* client_messages;
+
+
+
+/**
+ * Initialise the state of the connections
+ * 
+ * @param  Zero on success, -1 on error
+ */
+int server_initialise(void);
+
+/**
+ * Destroy the state of the connections
+ * 
+ * @param  disconnect  Disconnect all connections?
+ */
+void server_destroy(int disconnect);
+
+/**
+ * Marshal the state of the connections
+ * 
+ * @param   buf  Output buffer for the marshalled data,
+ *               `NULL` to only measure how many bytes
+ *               this buffer needs
+ * @return       The number of marshalled bytes
+ */
+size_t server_marshal(void* buf);
+
+/**
+ * Unmarshal the state of the connections
+ * 
+ * @param   buf  Buffer for the marshalled data
+ * @return       The number of unmarshalled bytes, 0 on error
+ */
+size_t server_unmarshal(const void* buf);
+