1 files changed, 93 insertions, 0 deletions
diff --git a/indra/lscript/lscript_execute/llscriptresource.cpp b/indra/lscript/lscript_execute/llscriptresource.cpp
new file mode 100644
index 0000000000..2c6811b226
--- /dev/null
+++ b/indra/lscript/lscript_execute/llscriptresource.cpp
@@ -0,0 +1,93 @@
+/** 
+ * @file llscriptresource.cpp
+ * @brief LLScriptResource class implementation for managing limited resources
+ *
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llscriptresource.h"
+#include "llerror.h"
+
+LLScriptResource::LLScriptResource()
+: mTotal(0),
+  mUsed(0)
+{
+}
+
+bool LLScriptResource::request(S32 amount /* = 1 */)
+{
+	if (mUsed + amount <= mTotal)
+	{
+		mUsed += amount;
+		return true;
+	}
+
+	return false;
+}
+
+bool LLScriptResource::release(S32 amount /* = 1 */)
+{
+	if (mUsed >= amount)
+	{
+		mUsed -= amount;
+		return true;
+	}
+
+	return false;
+}
+
+S32 LLScriptResource::getAvailable() const
+{
+	if (mUsed > mTotal)
+	{
+		// It is possible after a parcel ownership change for more than total to be used
+		// In this case the user of this class just wants to know 
+		// whether or not they can use a resource
+		return 0;
+	}
+	return (mTotal - mUsed);
+}
+
+void LLScriptResource::setTotal(S32 amount)
+{
+	// This may cause this resource to be over spent
+	// such that more are in use than total allowed
+	// Until those resources are released getAvailable will return 0.
+	mTotal = amount;
+}
+
+S32 LLScriptResource::getTotal() const
+{
+	return mTotal;
+}
+
+S32 LLScriptResource::getUsed() const
+{
+	return mUsed;
+}
+
+bool LLScriptResource::isOverLimit() const
+{
+	return (mUsed > mTotal);
+}