source: XIOS/dev/XIOS_DEV_CMIP6/src/context_server.cpp @ 1225

Last change on this file since 1225 was 1225, checked in by ymipsl, 7 years ago

Improvment of XIOS protocal on server side.

YM

  • Property copyright set to
    Software name : XIOS (Xml I/O Server)
    http://forge.ipsl.jussieu.fr/ioserver
    Creation date : January 2009
    Licence : CeCCIL version2
    see license file in root directory : Licence_CeCILL_V2-en.txt
    or http://www.cecill.info/licences/Licence_CeCILL_V2-en.html
    Holder : CEA/LSCE (Laboratoire des Sciences du CLimat et de l'Environnement)
    CNRS/IPSL (Institut Pierre Simon Laplace)
    Project Manager : Yann Meurdesoif
    yann.meurdesoif@cea.fr
  • Property svn:eol-style set to native
File size: 8.6 KB
Line 
1#include "context_server.hpp"
2#include "buffer_in.hpp"
3#include "type.hpp"
4#include "context.hpp"
5#include "object_template.hpp"
6#include "group_template.hpp"
7#include "attribute_template.hpp"
8#include "domain.hpp"
9#include "field.hpp"
10#include "file.hpp"
11#include "grid.hpp"
12#include "mpi.hpp"
13#include "tracer.hpp"
14#include "timer.hpp"
15#include "cxios.hpp"
16#include "event_scheduler.hpp"
17#include "server.hpp"
18#include <boost/functional/hash.hpp>
19
20
21
22namespace xios
23{
24
25  CContextServer::CContextServer(CContext* parent,MPI_Comm intraComm_,MPI_Comm interComm_)
26  {
27    context=parent;
28    intraComm=intraComm_;
29    MPI_Comm_size(intraComm,&intraCommSize);
30    MPI_Comm_rank(intraComm,&intraCommRank);
31
32    interComm=interComm_;
33    int flag;
34    MPI_Comm_test_inter(interComm,&flag);
35    if (flag) MPI_Comm_remote_size(interComm,&commSize);
36    else  MPI_Comm_size(interComm,&commSize);
37
38    currentTimeLine=0;
39    scheduled=false;
40    finished=false;
41    boost::hash<string> hashString;
42    if (CServer::serverLevel == 1)
43      hashId=hashString(context->getId() + boost::lexical_cast<string>(context->clientPrimServer.size()));
44    else
45      hashId=hashString(context->getId());
46  }
47
48  void CContextServer::setPendingEvent(void)
49  {
50    pendingEvent=true;
51  }
52
53  bool CContextServer::hasPendingEvent(void)
54  {
55    return pendingEvent;
56  }
57
58  bool CContextServer::hasFinished(void)
59  {
60    return finished;
61  }
62
63  bool CContextServer::eventLoop(bool enableEventsProcessing /*= true*/)
64  {
65    listen();
66    checkPendingRequest();
67    if (enableEventsProcessing)
68      processEvents();
69    return finished;
70  }
71
72  void CContextServer::listen(void)
73  {
74    int rank;
75    int flag;
76    int count;
77    char * addr;
78    MPI_Status status;
79    map<int,CServerBuffer*>::iterator it;
80
81    traceOff();
82    MPI_Iprobe(MPI_ANY_SOURCE, 20,interComm,&flag,&status);
83    traceOn();
84
85    if (flag==true)
86    {
87      rank=status.MPI_SOURCE ;
88
89      if (pendingRequest.find(rank)==pendingRequest.end()) listenPendingRequest(status) ;
90      else
91      {
92        for(rank=0;rank<commSize;rank++)
93        {
94          if (pendingRequest.find(rank)==pendingRequest.end())
95          {
96
97            traceOff();
98            MPI_Iprobe(rank, 20,interComm,&flag,&status);
99            traceOn();
100            if (flag==true) listenPendingRequest(status) ;
101          }
102        }
103      }
104    }
105  }
106
107  void CContextServer::listenPendingRequest(MPI_Status& status)
108  {
109    int count;
110    char * addr;
111    map<int,CServerBuffer*>::iterator it;
112    int rank=status.MPI_SOURCE ;
113
114    it=buffers.find(rank);
115    if (it==buffers.end()) // Receive the buffer size and allocate the buffer
116    {
117       StdSize buffSize = 0;
118       MPI_Recv(&buffSize, 1, MPI_LONG, rank, 20, interComm, &status);
119       mapBufferSize_.insert(std::make_pair(rank, buffSize));
120       it=(buffers.insert(pair<int,CServerBuffer*>(rank,new CServerBuffer(buffSize)))).first;
121    }
122    else
123    {
124      MPI_Get_count(&status,MPI_CHAR,&count);
125      if (it->second->isBufferFree(count))
126      {
127         addr=(char*)it->second->getBuffer(count);
128         MPI_Irecv(addr,count,MPI_CHAR,rank,20,interComm,&pendingRequest[rank]);
129         bufferRequest[rank]=addr;
130       }
131    }
132  }
133
134
135  void CContextServer::checkPendingRequest(void)
136  {
137    map<int,MPI_Request>::iterator it;
138    list<int> recvRequest;
139    list<int>::iterator itRecv;
140    int rank;
141    int flag;
142    int count;
143    MPI_Status status;
144
145    for(it=pendingRequest.begin();it!=pendingRequest.end();it++)
146    {
147      rank=it->first;
148      traceOff();
149      MPI_Test(& it->second, &flag, &status);
150      traceOn();
151      if (flag==true)
152      {
153        recvRequest.push_back(rank);
154        MPI_Get_count(&status,MPI_CHAR,&count);
155        processRequest(rank,bufferRequest[rank],count);
156      }
157    }
158
159    for(itRecv=recvRequest.begin();itRecv!=recvRequest.end();itRecv++)
160    {
161      pendingRequest.erase(*itRecv);
162      bufferRequest.erase(*itRecv);
163    }
164  }
165
166  void CContextServer::processRequest(int rank, char* buff,int count)
167  {
168
169    CBufferIn buffer(buff,count);
170    char* startBuffer,endBuffer;
171    int size, offset;
172    size_t timeLine;
173    map<size_t,CEventServer*>::iterator it;
174
175    CTimer::get("Process request").resume();
176    while(count>0)
177    {
178      char* startBuffer=(char*)buffer.ptr();
179      CBufferIn newBuffer(startBuffer,buffer.remain());
180      newBuffer>>size>>timeLine;
181
182      it=events.find(timeLine);
183      if (it==events.end()) it=events.insert(pair<int,CEventServer*>(timeLine,new CEventServer)).first;
184      it->second->push(rank,buffers[rank],startBuffer,size);
185
186      buffer.advance(size);
187      count=buffer.remain();
188    }
189    CTimer::get("Process request").suspend();
190  }
191
192  void CContextServer::processEvents(void)
193  {
194    map<size_t,CEventServer*>::iterator it;
195    CEventServer* event;
196
197    it=events.find(currentTimeLine);
198    if (it!=events.end())
199    {
200      event=it->second;
201
202      if (event->isFull())
203      {
204        if (!scheduled && CServer::eventScheduler) // Skip event scheduling for attached mode and reception on client side
205        {
206          CServer::eventScheduler->registerEvent(currentTimeLine,hashId);
207          scheduled=true;
208        }
209        else if (!CServer::eventScheduler || CServer::eventScheduler->queryEvent(currentTimeLine,hashId) )
210        {
211         // When using attached mode, synchronise the processes to avoid that differents event be scheduled by differents processes
212         // The best way to properly solve this problem will be to use the event scheduler also in attached mode
213         // for now just set up a MPI barrier
214         if (!CServer::eventScheduler && CXios::isServer) MPI_Barrier(intraComm) ;
215
216         CTimer::get("Process events").resume();
217         dispatchEvent(*event);
218         CTimer::get("Process events").suspend();
219         pendingEvent=false;
220         delete event;
221         events.erase(it);
222         currentTimeLine++;
223         scheduled = false;
224        }
225      }
226    }
227  }
228
229  CContextServer::~CContextServer()
230  {
231    map<int,CServerBuffer*>::iterator it;
232    for(it=buffers.begin();it!=buffers.end();++it) delete it->second;
233  }
234
235  void CContextServer::dispatchEvent(CEventServer& event)
236  {
237    string contextName;
238    string buff;
239    int MsgSize;
240    int rank;
241    list<CEventServer::SSubEvent>::iterator it;
242    StdString ctxId = context->getId();
243    CContext::setCurrent(ctxId);
244    StdSize totalBuf = 0;
245
246    if (event.classId==CContext::GetType() && event.type==CContext::EVENT_ID_CONTEXT_FINALIZE)
247    {
248      finished=true;
249      info(20)<<" CContextServer: Receive context <"<<context->getId()<<"> finalize."<<endl;
250      context->finalize();
251      std::map<int, StdSize>::const_iterator itbMap = mapBufferSize_.begin(),
252                           iteMap = mapBufferSize_.end(), itMap;
253      for (itMap = itbMap; itMap != iteMap; ++itMap)
254      {
255        rank = itMap->first;
256        report(10)<< " Memory report : Context <"<<ctxId<<"> : server side : memory used for buffer of each connection to client" << endl
257            << "  +) With client of rank " << rank << " : " << itMap->second << " bytes " << endl;
258        totalBuf += itMap->second;
259      }
260      report(0)<< " Memory report : Context <"<<ctxId<<"> : server side : total memory used for buffer "<<totalBuf<<" bytes"<<endl;
261    }
262    else if (event.classId==CContext::GetType()) CContext::dispatchEvent(event);
263    else if (event.classId==CContextGroup::GetType()) CContextGroup::dispatchEvent(event);
264    else if (event.classId==CCalendarWrapper::GetType()) CCalendarWrapper::dispatchEvent(event);
265    else if (event.classId==CDomain::GetType()) CDomain::dispatchEvent(event);
266    else if (event.classId==CDomainGroup::GetType()) CDomainGroup::dispatchEvent(event);
267    else if (event.classId==CAxis::GetType()) CAxis::dispatchEvent(event);
268    else if (event.classId==CAxisGroup::GetType()) CAxisGroup::dispatchEvent(event);
269    else if (event.classId==CScalar::GetType()) CScalar::dispatchEvent(event);
270    else if (event.classId==CScalarGroup::GetType()) CScalarGroup::dispatchEvent(event);
271    else if (event.classId==CGrid::GetType()) CGrid::dispatchEvent(event);
272    else if (event.classId==CGridGroup::GetType()) CGridGroup::dispatchEvent(event);
273    else if (event.classId==CField::GetType()) CField::dispatchEvent(event);
274    else if (event.classId==CFieldGroup::GetType()) CFieldGroup::dispatchEvent(event);
275    else if (event.classId==CFile::GetType()) CFile::dispatchEvent(event);
276    else if (event.classId==CFileGroup::GetType()) CFileGroup::dispatchEvent(event);
277    else if (event.classId==CVariable::GetType()) CVariable::dispatchEvent(event);
278    else
279    {
280      ERROR("void CContextServer::dispatchEvent(CEventServer& event)",<<" Bad event class Id"<<endl);
281    }
282  }
283}
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