source: XIOS/dev/branch_yushan_merged/src/context_server.cpp @ 1134

Last change on this file since 1134 was 1134, checked in by yushan, 4 years ago

branch merged with trunk r1130

  • 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: 8.1 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_std.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, ep_lib::MPI_Comm intraComm_, ep_lib::MPI_Comm interComm_)
26  {
27    context=parent;
28    intraComm=intraComm_;
29    MPI_Comm_size(intraComm,&intraCommSize);
30    MPI_Comm_rank(intraComm,&intraCommRank);
31    interComm=interComm_;
32    int flag;
33    MPI_Comm_test_inter(interComm,&flag);
34    if (flag) MPI_Comm_remote_size(interComm,&commSize);
35    else  MPI_Comm_size(interComm,&commSize);
36    currentTimeLine=0;
37    scheduled=false;
38    finished=false;
39
40    boost::hash<string> hashString;
41    hashId=hashString(context->getId());
42
43  }
44  void CContextServer::setPendingEvent(void)
45  {
46    pendingEvent=true;
47  }
48
49  bool CContextServer::hasPendingEvent(void)
50  {
51    return pendingEvent;
52  }
53
54  bool CContextServer::hasFinished(void)
55  {
56    return finished;
57  }
58
59  bool CContextServer::eventLoop(bool enableEventsProcessing /*= true*/)
60  {
61    listen();
62    checkPendingRequest();
63    if (enableEventsProcessing)
64      processEvents();
65    return finished;
66  }
67
68  void CContextServer::listen(void)
69  {
70    int rank;
71    int flag;
72    int count;
73    char * addr;
74    ep_lib::MPI_Status status;
75    map<int,CServerBuffer*>::iterator it;
76
77    for(rank=0;rank<commSize;rank++)
78    {
79      if (pendingRequest.find(rank)==pendingRequest.end())
80      {
81        traceOff();
82        ep_lib::MPI_Iprobe(rank,20,interComm,&flag,&status);
83        traceOn();
84        if (flag==true)
85        {
86          it=buffers.find(rank);
87          if (it==buffers.end()) // Receive the buffer size and allocate the buffer
88          {
89            StdSize buffSize = 0;
90            ep_lib::MPI_Recv(&buffSize, 1, MPI_LONG, rank, 20, interComm, &status);
91            mapBufferSize_.insert(std::make_pair(rank, buffSize));
92            it=(buffers.insert(pair<int,CServerBuffer*>(rank,new CServerBuffer(buffSize)))).first;
93          }
94          else
95          {
96           
97            ep_lib::MPI_Get_count(&status,MPI_CHAR,&count);
98            if (it->second->isBufferFree(count))
99            {
100              addr=(char*)it->second->getBuffer(count);
101              ep_lib::MPI_Irecv(addr,count,MPI_CHAR,rank,20,interComm,&pendingRequest[rank]);
102              bufferRequest[rank]=addr;
103            }
104          }
105        }
106      }
107    }
108  }
109
110  void CContextServer::checkPendingRequest(void)
111  {
112    map<int,ep_lib::MPI_Request>::iterator it;
113    list<int> recvRequest;
114    list<int>::iterator itRecv;
115    int rank;
116    int flag;
117    int count;
118    ep_lib::MPI_Status status;
119
120    for(it=pendingRequest.begin();it!=pendingRequest.end();++it)
121    {
122      rank=it->first;
123      traceOff();
124      ep_lib::MPI_Test(& it->second, &flag, &status);
125      traceOn();
126      if (flag==true)
127      {
128        recvRequest.push_back(rank);
129        ep_lib::MPI_Get_count(&status,MPI_CHAR,&count);
130        processRequest(rank,bufferRequest[rank],count);
131      }
132    }
133
134    for(itRecv=recvRequest.begin();itRecv!=recvRequest.end();itRecv++)
135    {
136      pendingRequest.erase(*itRecv);
137      bufferRequest.erase(*itRecv);
138    }
139  }
140
141  void CContextServer::processRequest(int rank, char* buff,int count)
142  {
143
144    CBufferIn buffer(buff,count);
145    char* startBuffer,endBuffer;
146    int size, offset;
147    size_t timeLine;
148    map<size_t,CEventServer*>::iterator it;
149
150    while(count>0)
151    {
152      char* startBuffer=(char*)buffer.ptr();
153      CBufferIn newBuffer(startBuffer,buffer.remain());
154      newBuffer>>size>>timeLine;
155
156      it=events.find(timeLine);
157      if (it==events.end()) it=events.insert(pair<int,CEventServer*>(timeLine,new CEventServer)).first;
158      it->second->push(rank,buffers[rank],startBuffer,size);
159
160      buffer.advance(size);
161      count=buffer.remain();
162    }
163
164  }
165
166  void CContextServer::processEvents(void)
167  {
168    map<size_t,CEventServer*>::iterator it;
169    CEventServer* event;
170
171    it=events.find(currentTimeLine);
172    if (it!=events.end())
173    {
174      event=it->second;
175
176      if (event->isFull())
177      {
178        if (!scheduled && CServer::eventScheduler) // Skip event scheduling for attached mode and reception on client side
179        {
180          CServer::eventScheduler->registerEvent(currentTimeLine,hashId);
181          scheduled=true;
182        }
183        else if (!CServer::eventScheduler || CServer::eventScheduler->queryEvent(currentTimeLine,hashId) )
184        {
185         // When using attached mode, synchronise the processes to avoid that differents event be scheduled by differents processes
186         // The best way to properly solve this problem will be to use the event scheduler also in attached mode
187         // for now just set up a MPI barrier
188         if (!CServer::eventScheduler && CXios::isServer) MPI_Barrier(intraComm) ;
189
190         CTimer::get("Process events").resume();
191         dispatchEvent(*event);
192         CTimer::get("Process events").suspend();
193         pendingEvent=false;
194         delete event;
195         events.erase(it);
196         currentTimeLine++;
197         scheduled = false;
198        }
199      }
200    }
201  }
202
203  CContextServer::~CContextServer()
204  {
205    map<int,CServerBuffer*>::iterator it;
206    for(it=buffers.begin();it!=buffers.end();++it) delete it->second;
207  }
208
209
210  void CContextServer::dispatchEvent(CEventServer& event)
211  {
212    string contextName;
213    string buff;
214    int MsgSize;
215    int rank;
216    list<CEventServer::SSubEvent>::iterator it;
217    CContext::setCurrent(context->getId());
218
219    if (event.classId==CContext::GetType() && event.type==CContext::EVENT_ID_CONTEXT_FINALIZE)
220    {
221      finished=true;
222      #pragma omp critical (_output)
223      info(20)<<"Server Side context <"<<context->getId()<<"> finalized"<<endl;
224      std::map<int, StdSize>::const_iterator itbMap = mapBufferSize_.begin(),
225                                             iteMap = mapBufferSize_.end(), itMap;
226      StdSize totalBuf = 0;
227      for (itMap = itbMap; itMap != iteMap; ++itMap)
228      {
229        //report(10)<< " Memory report : Context <"<<context->getId()<<"> : server side : memory used for buffer of each connection to client" << endl
230        //          << "  +) With client of rank " << itMap->first << " : " << itMap->second << " bytes " << endl;
231        totalBuf += itMap->second;
232      }
233      context->finalize();
234      //report(0)<< " Memory report : Context <"<<context->getId()<<"> : server side : total memory used for buffer "<<totalBuf<<" bytes"<<endl;
235    }
236    else if (event.classId==CContext::GetType()) CContext::dispatchEvent(event);
237    else if (event.classId==CContextGroup::GetType()) CContextGroup::dispatchEvent(event);
238    else if (event.classId==CCalendarWrapper::GetType()) CCalendarWrapper::dispatchEvent(event);
239    else if (event.classId==CDomain::GetType()) CDomain::dispatchEvent(event);
240    else if (event.classId==CDomainGroup::GetType()) CDomainGroup::dispatchEvent(event);
241    else if (event.classId==CAxis::GetType()) CAxis::dispatchEvent(event);
242    else if (event.classId==CAxisGroup::GetType()) CAxisGroup::dispatchEvent(event);
243    else if (event.classId==CScalar::GetType()) CScalar::dispatchEvent(event);
244    else if (event.classId==CScalarGroup::GetType()) CScalarGroup::dispatchEvent(event);
245    else if (event.classId==CGrid::GetType()) CGrid::dispatchEvent(event);
246    else if (event.classId==CGridGroup::GetType()) CGridGroup::dispatchEvent(event);
247    else if (event.classId==CField::GetType()) CField::dispatchEvent(event);
248    else if (event.classId==CFieldGroup::GetType()) CFieldGroup::dispatchEvent(event);
249    else if (event.classId==CFile::GetType()) CFile::dispatchEvent(event);
250    else if (event.classId==CFileGroup::GetType()) CFileGroup::dispatchEvent(event);
251    else if (event.classId==CVariable::GetType()) CVariable::dispatchEvent(event);
252    else
253    {
254      ERROR("void CContextServer::dispatchEvent(CEventServer& event)",<<" Bad event class Id"<<endl);
255    }
256  }
257}
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