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/**
* @file llattachmentsmgr.h
* @brief Batches up attachment requests and sends them all
* in one message.
*
* $LicenseInfo:firstyear=2004&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
#ifndef LL_LLATTACHMENTSMGR_H
#define LL_LLATTACHMENTSMGR_H
#include "llsingleton.h"
class LLViewerInventoryItem;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LLAttachmentsMgr
//
// The sole purpose of this class is to take attachment
// requests, queue them up, and send them all at once.
// This handles situations where the viewer may request
// a bunch of attachments at once in a short period of
// time, where each of the requests would normally be
// sent as a separate message versus being batched into
// one single message.
//
// The intent of this batching is to reduce viewer->server
// traffic.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLAttachmentsMgr: public LLSingleton<LLAttachmentsMgr>
{
public:
struct AttachmentsInfo
{
LLUUID mItemID;
U8 mAttachmentPt;
BOOL mAdd;
};
typedef std::vector<AttachmentsInfo> attachments_vec_t;
LLAttachmentsMgr();
virtual ~LLAttachmentsMgr();
void addAttachmentRequest(const LLUUID& item_id,
const U8 attachment_pt,
const BOOL add);
void requestAttachments(const attachments_vec_t& attachment_requests);
static void onIdle(void *);
BOOL attachmentWasRequestedRecently(const LLUUID& inv_item_id, F32 seconds) const;
void addAttachmentRequestTime(const LLUUID& inv_item_id);
void onAttachmentArrived(const LLUUID& inv_item_id);
private:
void removeAttachmentRequestTime(const LLUUID& inv_item_id);
void onIdle();
void requestPendingAttachments();
void linkRecentlyArrivedAttachments();
// Attachments that we are planning to rez but haven't requested from the server yet.
attachments_vec_t mPendingAttachments;
// Attachments that have been requested from server but have not arrived yet.
std::map<LLUUID,LLTimer> mAttachmentRequests;
// Attachments that have arrived but have not been linked in the COF yet.
std::set<LLUUID> mRecentlyArrivedAttachments;
LLTimer mCOFLinkBatchTimer;
};
#endif
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