1 files changed, 112 insertions, 0 deletions

diff --git a/linden/indra/lscript/lscript_execute/llscriptresourceconsumer.cpp b/linden/indra/lscript/lscript_execute/llscriptresourceconsumer.cpp
new file mode 100644
index 0000000..5bade41
--- /dev/null
+++ b/linden/indra/lscript/lscript_execute/llscriptresourceconsumer.cpp
@@ -0,0 +1,112 @@
+/** 
+ * @file llscriptresourceconsumer.cpp
+ * @brief An interface for a script resource consumer.
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * Copyright (c) 2008-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "llscriptresourceconsumer.h"
+
+#include "llscriptresourcepool.h"
+
+LLScriptResourceConsumer::LLScriptResourceConsumer()
+        : mScriptResourcePool(&LLScriptResourcePool::null)
+{ }
+
+// Get the resource pool this consumer is currently using.
+// virtual 
+LLScriptResourcePool& LLScriptResourceConsumer::getScriptResourcePool()
+{
+        return *mScriptResourcePool;
+}
+
+// Get the resource pool this consumer is currently using.
+// virtual 
+const LLScriptResourcePool& LLScriptResourceConsumer::getScriptResourcePool() const
+{
+        return *mScriptResourcePool;
+}
+
+// virtual
+void LLScriptResourceConsumer::setScriptResourcePool(LLScriptResourcePool& new_pool)
+{
+        mScriptResourcePool = &new_pool;
+}
+
+bool LLScriptResourceConsumer::switchScriptResourcePools(LLScriptResourcePool& new_pool)
+{
+        if (&new_pool == &LLScriptResourcePool::null)
+        {
+                llwarns << "New pool is null" << llendl;
+        }
+
+        if (isInPool(new_pool))
+        {
+                return true;
+        }
+
+        if (!canUseScriptResourcePool(new_pool))
+        {
+                return false;
+        }
+
+        S32 used_urls = getUsedPublicURLs();
+        
+        getScriptResourcePool().getPublicURLResource().release( used_urls );
+        setScriptResourcePool(new_pool);
+        getScriptResourcePool().getPublicURLResource().request( used_urls );
+        
+        return true;
+}
+
+bool LLScriptResourceConsumer::canUseScriptResourcePool(const LLScriptResourcePool& resource_pool)
+{
+        if (isInPool(resource_pool))
+        {
+                return true;
+        }
+
+        if (resource_pool.getPublicURLResource().getAvailable() < getUsedPublicURLs())
+        {
+                return false;
+        }
+        
+        return true;
+}
+
+bool LLScriptResourceConsumer::isInPool(const LLScriptResourcePool& resource_pool)
+{
+        const LLScriptResourcePool& current_pool = getScriptResourcePool();
+        if ( &resource_pool == &current_pool )
+        {
+                // This consumer is already in this pool
+                return true;
+        }
+        return false;
+}
+