From 5403bf7c3acab434bb283f4e43302626ef2abc9b Mon Sep 17 00:00:00 2001
From: Michael Jumper <zhangmaike@users.sourceforge.net>
Date: Thu, 6 Sep 2012 19:57:19 -0700
Subject: [PATCH] Add resource pool to client.

---
 libguac/include/client.h | 30 ++++++++++++++++++++++++++++--
 libguac/src/client.c     |  7 +++++++
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/libguac/include/client.h b/libguac/include/client.h
index b1b481ee..05d14172 100644
--- a/libguac/include/client.h
+++ b/libguac/include/client.h
@@ -134,6 +134,14 @@ typedef int guac_client_init_handler(guac_client* client, int argc, char** argv)
  */
 #define GUAC_BUFFER_POOL_INITIAL_SIZE 1024
 
+/**
+ * The number of initial slots to allocate for resources within the client resource
+ * map. The client resource map maps resource indices to actual guac_resource instances.
+ * This map will need to be reallocated once the number of resources required exceeds
+ * the available number of slots.
+ */
+#define GUAC_RESOURCE_MAP_INITIAL_SIZE 1024
+
 /**
  * Possible current states of the Guacamole client. Currently, the only
  * two states are GUAC_CLIENT_RUNNING and GUAC_CLIENT_STOPPING.
@@ -353,15 +361,33 @@ struct guac_client {
     guac_client_log_handler* log_error_handler;
 
     /**
-     * Pool of buffer indices.
+     * Pool of buffer indices. Buffers are simply layers with negative indices. Note that
+     * because guac_pool always gives non-negative indices starting at 0, the output of
+     * this guac_pool will be adjusted.
      */
     guac_pool* __buffer_pool;
 
     /**
-     * Pool of layer indices.
+     * Pool of layer indices. Note that because guac_pool always gives non-negative indices
+     * starting at 0, the output of this guac_pool will be adjusted.
      */
     guac_pool* __layer_pool;
 
+    /**
+     * Pool of server-side resource indices.
+     */
+    guac_pool* __resource_pool;
+
+    /**
+     * Array of all allocated resources.
+     */
+    guac_resource** __resource_map;
+
+    /**
+     * The number of elements in the __resource_map array.
+     */
+    int __available_resource_slots;
+
 };
 
 /**
diff --git a/libguac/src/client.c b/libguac/src/client.c
index 0a771ffb..9dfe835e 100644
--- a/libguac/src/client.c
+++ b/libguac/src/client.c
@@ -118,9 +118,16 @@ guac_client* guac_client_alloc() {
 
     client->state = GUAC_CLIENT_RUNNING;
 
+    /* Allocate buffer and layer pools */
     client->__buffer_pool = guac_pool_alloc(GUAC_BUFFER_POOL_INITIAL_SIZE);
     client->__layer_pool = guac_pool_alloc(GUAC_BUFFER_POOL_INITIAL_SIZE);
 
+    /* Allocate resource pool */
+    client->__resource_pool = guac_pool_alloc(0);
+    client->__available_resource_slots = GUAC_RESOURCE_MAP_INITIAL_SIZE;
+    client->__resource_map =
+        malloc(sizeof(guac_resource*) * client->__available_resource_slots);
+
     return client;
 
 }