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/**
* @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);
}
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