source: XIOS/trunk/src/context_server.cpp @ 1639

Last change on this file since 1639 was 1639, checked in by yushan, 3 years ago

revert erroneous commit on trunk

  • 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: 8.7 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    bool okLoop;
81
82    traceOff();
83    MPI_Iprobe(MPI_ANY_SOURCE, 20,interComm,&flag,&status);
84    traceOn();
85
86    if (flag==true)
87    {
88      rank=status.MPI_SOURCE ;
89      okLoop = true;
90      if (pendingRequest.find(rank)==pendingRequest.end())
91        okLoop = !listenPendingRequest(status) ;
92      if (okLoop)
93      {
94        for(rank=0;rank<commSize;rank++)
95        {
96          if (pendingRequest.find(rank)==pendingRequest.end())
97          {
98
99            traceOff();
100            MPI_Iprobe(rank, 20,interComm,&flag,&status);
101            traceOn();
102            if (flag==true) listenPendingRequest(status) ;
103          }
104        }
105      }
106    }
107  }
108
109  bool CContextServer::listenPendingRequest(MPI_Status& status)
110  {
111    int count;
112    char * addr;
113    map<int,CServerBuffer*>::iterator it;
114    int rank=status.MPI_SOURCE ;
115
116    it=buffers.find(rank);
117    if (it==buffers.end()) // Receive the buffer size and allocate the buffer
118    {
119       StdSize buffSize = 0;
120       MPI_Recv(&buffSize, 1, MPI_LONG, rank, 20, interComm, &status);
121       mapBufferSize_.insert(std::make_pair(rank, buffSize));
122       it=(buffers.insert(pair<int,CServerBuffer*>(rank,new CServerBuffer(buffSize)))).first;
123       return true;
124    }
125    else
126    {
127      MPI_Get_count(&status,MPI_CHAR,&count);
128      if (it->second->isBufferFree(count))
129      {
130         addr=(char*)it->second->getBuffer(count);
131         MPI_Irecv(addr,count,MPI_CHAR,rank,20,interComm,&pendingRequest[rank]);
132         bufferRequest[rank]=addr;
133         return true;
134       }
135      else
136        return false;
137    }
138  }
139
140
141  void CContextServer::checkPendingRequest(void)
142  {
143    map<int,MPI_Request>::iterator it;
144    list<int> recvRequest;
145    list<int>::iterator itRecv;
146    int rank;
147    int flag;
148    int count;
149    MPI_Status status;
150
151    for(it=pendingRequest.begin();it!=pendingRequest.end();it++)
152    {
153      rank=it->first;
154      traceOff();
155      MPI_Test(& it->second, &flag, &status);
156      traceOn();
157      if (flag==true)
158      {
159        recvRequest.push_back(rank);
160        MPI_Get_count(&status,MPI_CHAR,&count);
161        processRequest(rank,bufferRequest[rank],count);
162      }
163    }
164
165    for(itRecv=recvRequest.begin();itRecv!=recvRequest.end();itRecv++)
166    {
167      pendingRequest.erase(*itRecv);
168      bufferRequest.erase(*itRecv);
169    }
170  }
171
172  void CContextServer::processRequest(int rank, char* buff,int count)
173  {
174
175    CBufferIn buffer(buff,count);
176    char* startBuffer,endBuffer;
177    int size, offset;
178    size_t timeLine;
179    map<size_t,CEventServer*>::iterator it;
180
181    CTimer::get("Process request").resume();
182    while(count>0)
183    {
184      char* startBuffer=(char*)buffer.ptr();
185      CBufferIn newBuffer(startBuffer,buffer.remain());
186      newBuffer>>size>>timeLine;
187
188      it=events.find(timeLine);
189      if (it==events.end()) it=events.insert(pair<int,CEventServer*>(timeLine,new CEventServer)).first;
190      it->second->push(rank,buffers[rank],startBuffer,size);
191
192      buffer.advance(size);
193      count=buffer.remain();
194    }
195    CTimer::get("Process request").suspend();
196  }
197
198  void CContextServer::processEvents(void)
199  {
200    map<size_t,CEventServer*>::iterator it;
201    CEventServer* event;
202
203    it=events.find(currentTimeLine);
204    if (it!=events.end())
205    {
206      event=it->second;
207
208      if (event->isFull())
209      {
210        if (!scheduled && CServer::eventScheduler) // Skip event scheduling for attached mode and reception on client side
211        {
212          CServer::eventScheduler->registerEvent(currentTimeLine,hashId);
213          scheduled=true;
214        }
215        else if (!CServer::eventScheduler || CServer::eventScheduler->queryEvent(currentTimeLine,hashId) )
216        {
217         // When using attached mode, synchronise the processes to avoid that differents event be scheduled by differents processes
218         // The best way to properly solve this problem will be to use the event scheduler also in attached mode
219         // for now just set up a MPI barrier
220         if (!CServer::eventScheduler && CXios::isServer) MPI_Barrier(intraComm) ;
221
222         CTimer::get("Process events").resume();
223         dispatchEvent(*event);
224         CTimer::get("Process events").suspend();
225         pendingEvent=false;
226         delete event;
227         events.erase(it);
228         currentTimeLine++;
229         scheduled = false;
230        }
231      }
232    }
233  }
234
235  CContextServer::~CContextServer()
236  {
237    map<int,CServerBuffer*>::iterator it;
238    for(it=buffers.begin();it!=buffers.end();++it) delete it->second;
239  }
240
241  void CContextServer::dispatchEvent(CEventServer& event)
242  {
243    string contextName;
244    string buff;
245    int MsgSize;
246    int rank;
247    list<CEventServer::SSubEvent>::iterator it;
248    StdString ctxId = context->getId();
249    CContext::setCurrent(ctxId);
250    StdSize totalBuf = 0;
251
252    if (event.classId==CContext::GetType() && event.type==CContext::EVENT_ID_CONTEXT_FINALIZE)
253    {
254      finished=true;
255      info(20)<<" CContextServer: Receive context <"<<context->getId()<<"> finalize."<<endl;
256      context->finalize();
257      std::map<int, StdSize>::const_iterator itbMap = mapBufferSize_.begin(),
258                           iteMap = mapBufferSize_.end(), itMap;
259      for (itMap = itbMap; itMap != iteMap; ++itMap)
260      {
261        rank = itMap->first;
262        report(10)<< " Memory report : Context <"<<ctxId<<"> : server side : memory used for buffer of each connection to client" << endl
263            << "  +) With client of rank " << rank << " : " << itMap->second << " bytes " << endl;
264        totalBuf += itMap->second;
265      }
266      report(0)<< " Memory report : Context <"<<ctxId<<"> : server side : total memory used for buffer "<<totalBuf<<" bytes"<<endl;
267    }
268    else if (event.classId==CContext::GetType()) CContext::dispatchEvent(event);
269    else if (event.classId==CContextGroup::GetType()) CContextGroup::dispatchEvent(event);
270    else if (event.classId==CCalendarWrapper::GetType()) CCalendarWrapper::dispatchEvent(event);
271    else if (event.classId==CDomain::GetType()) CDomain::dispatchEvent(event);
272    else if (event.classId==CDomainGroup::GetType()) CDomainGroup::dispatchEvent(event);
273    else if (event.classId==CAxis::GetType()) CAxis::dispatchEvent(event);
274    else if (event.classId==CAxisGroup::GetType()) CAxisGroup::dispatchEvent(event);
275    else if (event.classId==CScalar::GetType()) CScalar::dispatchEvent(event);
276    else if (event.classId==CScalarGroup::GetType()) CScalarGroup::dispatchEvent(event);
277    else if (event.classId==CGrid::GetType()) CGrid::dispatchEvent(event);
278    else if (event.classId==CGridGroup::GetType()) CGridGroup::dispatchEvent(event);
279    else if (event.classId==CField::GetType()) CField::dispatchEvent(event);
280    else if (event.classId==CFieldGroup::GetType()) CFieldGroup::dispatchEvent(event);
281    else if (event.classId==CFile::GetType()) CFile::dispatchEvent(event);
282    else if (event.classId==CFileGroup::GetType()) CFileGroup::dispatchEvent(event);
283    else if (event.classId==CVariable::GetType()) CVariable::dispatchEvent(event);
284    else
285    {
286      ERROR("void CContextServer::dispatchEvent(CEventServer& event)",<<" Bad event class Id"<<endl);
287    }
288  }
289}
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