[591] | 1 | #include "xios_spl.hpp" |
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[300] | 2 | #include "exception.hpp" |
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[380] | 3 | #include "log.hpp" |
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[300] | 4 | #include "buffer_out.hpp" |
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| 5 | #include "buffer_client.hpp" |
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[317] | 6 | #include "cxios.hpp" |
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[382] | 7 | #include "mpi.hpp" |
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[347] | 8 | #include "tracer.hpp" |
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[300] | 9 | |
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[335] | 10 | namespace xios |
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[300] | 11 | { |
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[732] | 12 | size_t CClientBuffer::maxRequestSize = 0; |
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[509] | 13 | |
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[1639] | 14 | CClientBuffer::CClientBuffer(MPI_Comm interComm, int serverRank, StdSize bufferSize, StdSize estimatedMaxEventSize, StdSize maxBufferedEvents) |
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[917] | 15 | : interComm(interComm) |
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| 16 | , serverRank(serverRank) |
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| 17 | , bufferSize(bufferSize) |
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[1201] | 18 | , estimatedMaxEventSize(estimatedMaxEventSize) |
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| 19 | , maxEventSize(0) |
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[917] | 20 | , current(0) |
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| 21 | , count(0) |
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| 22 | , bufferedEvents(0) |
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| 23 | , maxBufferedEvents(maxBufferedEvents) |
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| 24 | , pending(false) |
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[300] | 25 | { |
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[732] | 26 | buffer[0] = new char[bufferSize]; // transform it with MPI_ALLOC_MEM later |
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| 27 | buffer[1] = new char[bufferSize]; |
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| 28 | retBuffer = new CBufferOut(buffer[current], bufferSize); |
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[917] | 29 | info(10) << "CClientBuffer: allocated 2 x " << bufferSize << " bytes for server " << serverRank << " with a maximum of " << maxBufferedEvents << " buffered events" << endl; |
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[300] | 30 | } |
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[509] | 31 | |
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[300] | 32 | CClientBuffer::~CClientBuffer() |
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| 33 | { |
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[732] | 34 | delete [] buffer[0]; |
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| 35 | delete [] buffer[1]; |
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| 36 | delete retBuffer; |
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[300] | 37 | } |
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[509] | 38 | |
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[1227] | 39 | StdSize CClientBuffer::remain(void) |
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[300] | 40 | { |
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[732] | 41 | return bufferSize - count; |
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[300] | 42 | } |
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[509] | 43 | |
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[1227] | 44 | bool CClientBuffer::isBufferFree(StdSize size) |
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[300] | 45 | { |
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[732] | 46 | if (size > bufferSize) |
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[1227] | 47 | ERROR("bool CClientBuffer::isBufferFree(StdSize size)", |
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[732] | 48 | << "The requested size (" << size << " bytes) is too big to fit the buffer (" << bufferSize << " bytes), please increase the client buffer size." << endl); |
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[509] | 49 | |
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[1201] | 50 | if (size > maxEventSize) |
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| 51 | { |
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| 52 | maxEventSize = size; |
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| 53 | |
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| 54 | if (size > estimatedMaxEventSize) |
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| 55 | error(0) << "WARNING: Unexpected event of size " << size << " for server " << serverRank |
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| 56 | << " (estimated max event size = " << estimatedMaxEventSize << ")" << std::endl; |
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| 57 | |
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| 58 | if (size > maxRequestSize) maxRequestSize = size; |
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| 59 | } |
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| 60 | |
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| 61 | |
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[917] | 62 | return (size <= remain() && bufferedEvents < maxBufferedEvents); |
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[300] | 63 | } |
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[509] | 64 | |
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| 65 | |
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[1227] | 66 | CBufferOut* CClientBuffer::getBuffer(StdSize size) |
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[300] | 67 | { |
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[732] | 68 | if (size <= remain()) |
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[300] | 69 | { |
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[732] | 70 | retBuffer->realloc(buffer[current] + count, size); |
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| 71 | count += size; |
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[917] | 72 | bufferedEvents++; |
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[732] | 73 | return retBuffer; |
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[300] | 74 | } |
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| 75 | else |
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| 76 | { |
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[1227] | 77 | ERROR("CBufferOut* CClientBuffer::getBuffer(StdSize size)", |
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[732] | 78 | << "Not enough space in buffer, this should not have happened..."); |
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| 79 | return NULL; |
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[300] | 80 | } |
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[509] | 81 | } |
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| 82 | |
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[300] | 83 | bool CClientBuffer::checkBuffer(void) |
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| 84 | { |
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[1639] | 85 | MPI_Status status; |
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[732] | 86 | int flag; |
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[509] | 87 | |
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[300] | 88 | if (pending) |
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| 89 | { |
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[732] | 90 | traceOff(); |
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[1639] | 91 | MPI_Test(&request, &flag, &status); |
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[732] | 92 | traceOn(); |
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| 93 | if (flag == true) pending = false; |
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[300] | 94 | } |
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| 95 | |
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| 96 | if (!pending) |
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| 97 | { |
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[732] | 98 | if (count > 0) |
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[300] | 99 | { |
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[1639] | 100 | MPI_Issend(buffer[current], count, MPI_CHAR, serverRank, 20, interComm, &request); |
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[732] | 101 | pending = true; |
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| 102 | if (current == 1) current = 0; |
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| 103 | else current = 1; |
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| 104 | count = 0; |
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[917] | 105 | bufferedEvents = 0; |
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[300] | 106 | } |
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| 107 | } |
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[732] | 108 | |
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| 109 | return pending; |
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[300] | 110 | } |
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[509] | 111 | |
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[300] | 112 | bool CClientBuffer::hasPendingRequest(void) |
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| 113 | { |
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[732] | 114 | return (pending || count > 0); |
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[300] | 115 | } |
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[509] | 116 | } |
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