[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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[732] | 14 | CClientBuffer::CClientBuffer(MPI_Comm interComm_, int serverRank_, StdSize bfSize) |
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[300] | 15 | { |
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[732] | 16 | interComm = interComm_; |
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| 17 | serverRank = serverRank_; |
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| 18 | bufferSize = bfSize; |
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| 19 | buffer[0] = new char[bufferSize]; // transform it with MPI_ALLOC_MEM later |
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| 20 | buffer[1] = new char[bufferSize]; |
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| 21 | current = 0; |
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| 22 | count = 0; |
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| 23 | pending = false; |
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| 24 | retBuffer = new CBufferOut(buffer[current], bufferSize); |
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| 25 | info(10) << "CClientBuffer: allocated " << bufferSize << " bytes for server " << serverRank_ << endl; |
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[300] | 26 | } |
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[509] | 27 | |
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[300] | 28 | CClientBuffer::~CClientBuffer() |
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| 29 | { |
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[732] | 30 | delete [] buffer[0]; |
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| 31 | delete [] buffer[1]; |
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| 32 | delete retBuffer; |
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[300] | 33 | } |
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[509] | 34 | |
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[300] | 35 | int CClientBuffer::remain(void) |
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| 36 | { |
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[732] | 37 | return bufferSize - count; |
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[300] | 38 | } |
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[509] | 39 | |
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[300] | 40 | bool CClientBuffer::isBufferFree(int size) |
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| 41 | { |
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[732] | 42 | if (size > maxRequestSize) maxRequestSize = size; |
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[509] | 43 | |
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[732] | 44 | if (size > bufferSize) |
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| 45 | ERROR("bool CClientBuffer::isBufferFree(int size)", |
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| 46 | << "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] | 47 | |
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[732] | 48 | return (size <= remain()); |
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[300] | 49 | } |
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[509] | 50 | |
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| 51 | |
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[732] | 52 | CBufferOut* CClientBuffer::getBuffer(int size) |
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[300] | 53 | { |
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[732] | 54 | if (size <= remain()) |
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[300] | 55 | { |
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[732] | 56 | retBuffer->realloc(buffer[current] + count, size); |
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| 57 | count += size; |
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| 58 | return retBuffer; |
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[300] | 59 | } |
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| 60 | else |
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| 61 | { |
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[732] | 62 | ERROR("CBufferOut* CClientBuffer::getBuffer(int size)", |
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| 63 | << "Not enough space in buffer, this should not have happened..."); |
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| 64 | return NULL; |
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[300] | 65 | } |
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[509] | 66 | } |
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| 67 | |
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[300] | 68 | bool CClientBuffer::checkBuffer(void) |
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| 69 | { |
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[732] | 70 | MPI_Status status; |
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| 71 | int flag; |
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[509] | 72 | |
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[300] | 73 | if (pending) |
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| 74 | { |
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[732] | 75 | traceOff(); |
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| 76 | MPI_Test(&request, &flag, &status); |
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| 77 | traceOn(); |
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| 78 | if (flag == true) pending = false; |
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[300] | 79 | } |
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| 80 | |
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| 81 | if (!pending) |
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| 82 | { |
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[732] | 83 | if (count > 0) |
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[300] | 84 | { |
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[732] | 85 | MPI_Issend(buffer[current], count, MPI_CHAR, serverRank, 20, interComm, &request); |
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| 86 | pending = true; |
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| 87 | if (current == 1) current = 0; |
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| 88 | else current = 1; |
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| 89 | count = 0; |
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[300] | 90 | } |
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| 91 | } |
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[732] | 92 | |
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| 93 | return pending; |
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[300] | 94 | } |
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[509] | 95 | |
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[300] | 96 | bool CClientBuffer::hasPendingRequest(void) |
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| 97 | { |
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[732] | 98 | return (pending || count > 0); |
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[300] | 99 | } |
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[509] | 100 | } |
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