260 lines
7.4 KiB
C++
260 lines
7.4 KiB
C++
/**
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* @file lllandmarklist.cpp
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* @brief Landmark asset list class
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*
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* $LicenseInfo:firstyear=2002&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "lllandmarklist.h"
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#include "message.h"
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#include "llassetstorage.h"
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#include "llappviewer.h"
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#include "llagent.h"
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#include "llvfile.h"
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#include "llviewerstats.h"
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// Globals
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LLLandmarkList gLandmarkList;
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// number is mostly arbitrary, but it should be below DEFAULT_QUEUE_SIZE pool size,
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// which is 4096, to not overfill the pool if user has more than 4K of landmarks
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// and it should leave some space for other potential simultaneous asset request
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const S32 MAX_SIMULTANEOUS_REQUESTS = 512;
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////////////////////////////////////////////////////////////////////////////
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// LLLandmarkList
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LLLandmarkList::~LLLandmarkList()
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{
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std::for_each(mList.begin(), mList.end(), DeletePairedPointer());
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mList.clear();
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}
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LLLandmark* LLLandmarkList::getAsset(const LLUUID& asset_uuid, loaded_callback_t cb)
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{
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LLLandmark* landmark = get_ptr_in_map(mList, asset_uuid);
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if(landmark)
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{
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LLVector3d dummy;
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if(cb && !landmark->getGlobalPos(dummy))
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{
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// landmark is not completely loaded yet
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loaded_callback_map_t::value_type vt(asset_uuid, cb);
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mLoadedCallbackMap.insert(vt);
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}
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return landmark;
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}
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else
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{
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if ( mBadList.find(asset_uuid) != mBadList.end() )
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{
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return NULL;
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}
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if ( mWaitList.find(asset_uuid) != mWaitList.end() )
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{
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// Landmark is sheduled for download, but not requested yet
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return NULL;
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}
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landmark_requested_list_t::iterator iter = mRequestedList.find(asset_uuid);
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if (iter != mRequestedList.end())
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{
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const F32 rerequest_time = 30.f; // 30 seconds between requests
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if (gFrameTimeSeconds - iter->second < rerequest_time)
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{
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return NULL;
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}
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}
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if (cb)
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{
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loaded_callback_map_t::value_type vt(asset_uuid, cb);
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mLoadedCallbackMap.insert(vt);
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}
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if (mRequestedList.size() > MAX_SIMULTANEOUS_REQUESTS)
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{
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// Workarounds for corutines pending list size limit:
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// Postpone download till queue is emptier.
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// Coroutines have own built in 'pending' list, but unfortunately
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// it is too small compared to potential amount of landmarks
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// or assets.
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mWaitList.insert(asset_uuid);
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return NULL;
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}
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// <FS:Beq/> fIRE-14457 Fix CopySLURL fails / landmakrs not loading - based on snippet from Chorazin Allen
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mRequestedList[asset_uuid] = gFrameTimeSeconds;
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gAssetStorage->getAssetData(asset_uuid,
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LLAssetType::AT_LANDMARK,
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LLLandmarkList::processGetAssetReply,
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NULL);
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// <FS:Beq/> fIRE-14457 Fix CopySLURL fails / landmakrs not loading - based on snippet from Chorazin Allen
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// mRequestedList[asset_uuid] = gFrameTimeSeconds;
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}
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return NULL;
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}
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// static
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void LLLandmarkList::processGetAssetReply(
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LLVFS *vfs,
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const LLUUID& uuid,
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LLAssetType::EType type,
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void* user_data,
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S32 status,
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LLExtStat ext_status )
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{
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if( status == 0 )
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{
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LLVFile file(vfs, uuid, type);
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S32 file_length = file.getSize();
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std::vector<char> buffer(file_length + 1);
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file.read( (U8*)&buffer[0], file_length);
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buffer[ file_length ] = 0;
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LLLandmark* landmark = LLLandmark::constructFromString(&buffer[0]);
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if (landmark)
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{
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gLandmarkList.mList[ uuid ] = landmark;
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gLandmarkList.mRequestedList.erase(uuid);
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LLVector3d pos;
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if(!landmark->getGlobalPos(pos))
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{
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LLUUID region_id;
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if(landmark->getRegionID(region_id))
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{
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LLLandmark::requestRegionHandle(
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gMessageSystem,
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gAgent.getRegionHost(),
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region_id,
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boost::bind(&LLLandmarkList::onRegionHandle, &gLandmarkList, uuid));
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}
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// the callback will be called when we get the region handle.
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}
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else
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{
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gLandmarkList.makeCallbacks(uuid);
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}
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}
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}
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else
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{
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// SJB: No use case for a notification here. Use LL_DEBUGS() instead
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if( LL_ERR_ASSET_REQUEST_NOT_IN_DATABASE == status )
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{
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LL_WARNS("Landmarks") << "Missing Landmark" << LL_ENDL;
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//LLNotificationsUtil::add("LandmarkMissing");
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}
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else
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{
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LL_WARNS("Landmarks") << "Unable to load Landmark" << LL_ENDL;
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//LLNotificationsUtil::add("UnableToLoadLandmark");
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}
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gLandmarkList.mBadList.insert(uuid);
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gLandmarkList.mRequestedList.erase(uuid); //mBadList effectively blocks any load, so no point keeping id in requests
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// todo: this should clean mLoadedCallbackMap!
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}
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// getAssetData can fire callback immediately, causing
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// a recursion which is suboptimal for very large wait list.
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// 'scheduling' indicates that we are inside request and
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// shouldn't be launching more requests.
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static bool scheduling = false;
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if (!scheduling && !gLandmarkList.mWaitList.empty())
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{
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scheduling = true;
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while (!gLandmarkList.mWaitList.empty() && gLandmarkList.mRequestedList.size() < MAX_SIMULTANEOUS_REQUESTS)
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{
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// start new download from wait list
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landmark_uuid_list_t::iterator iter = gLandmarkList.mWaitList.begin();
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LLUUID asset_uuid = *iter;
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gLandmarkList.mWaitList.erase(iter);
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gAssetStorage->getAssetData(asset_uuid,
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LLAssetType::AT_LANDMARK,
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LLLandmarkList::processGetAssetReply,
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NULL);
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gLandmarkList.mRequestedList[asset_uuid] = gFrameTimeSeconds;
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}
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scheduling = false;
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}
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}
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BOOL LLLandmarkList::isAssetInLoadedCallbackMap(const LLUUID& asset_uuid)
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{
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return mLoadedCallbackMap.find(asset_uuid) != mLoadedCallbackMap.end();
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}
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BOOL LLLandmarkList::assetExists(const LLUUID& asset_uuid)
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{
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return mList.count(asset_uuid) != 0 || mBadList.count(asset_uuid) != 0;
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}
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void LLLandmarkList::onRegionHandle(const LLUUID& landmark_id)
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{
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LLLandmark* landmark = getAsset(landmark_id);
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if (!landmark)
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{
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LL_WARNS() << "Got region handle but the landmark not found." << LL_ENDL;
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return;
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}
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// Calculate landmark global position.
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// This should succeed since the region handle is available.
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LLVector3d pos;
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if (!landmark->getGlobalPos(pos))
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{
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LL_WARNS() << "Got region handle but the landmark global position is still unknown." << LL_ENDL;
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return;
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}
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makeCallbacks(landmark_id);
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}
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void LLLandmarkList::makeCallbacks(const LLUUID& landmark_id)
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{
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LLLandmark* landmark = getAsset(landmark_id);
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if (!landmark)
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{
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LL_WARNS() << "Landmark to make callbacks for not found." << LL_ENDL;
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}
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// make all the callbacks here.
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loaded_callback_map_t::iterator it;
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while((it = mLoadedCallbackMap.find(landmark_id)) != mLoadedCallbackMap.end())
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{
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if (landmark)
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(*it).second(landmark);
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mLoadedCallbackMap.erase(it);
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}
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}
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