[1761] | 1 | #ifndef __WINDOW_MANAGER_HPP__ |
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| 2 | #define __WINDOW_MANAGER_HPP__ |
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| 3 | |
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| 4 | #include <map> |
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| 5 | #include "mpi.hpp" |
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| 6 | #include "buffer_in.hpp" |
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| 7 | #include "buffer_out.hpp" |
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| 8 | #include "message.hpp" |
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| 9 | |
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| 10 | namespace xios |
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| 11 | { |
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| 12 | |
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| 13 | |
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| 14 | class CWindowManager |
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| 15 | { |
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| 16 | |
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| 17 | private : |
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| 18 | const MPI_Aint OFFSET_LOCK=0 ; |
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| 19 | const int SIZE_LOCK=sizeof(int) ; |
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| 20 | const MPI_Aint OFFSET_BUFFER_SIZE=OFFSET_LOCK+SIZE_LOCK ; |
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| 21 | const int SIZE_BUFFER_SIZE=sizeof(size_t) ; |
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| 22 | const MPI_Aint OFFSET_BUFFER=OFFSET_BUFFER_SIZE+SIZE_BUFFER_SIZE ; |
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| 23 | const int WINDOWS_LOCKED=-1 ; |
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| 24 | |
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| 25 | MPI_Win window_ ; |
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| 26 | void * winBuffer_ ; |
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| 27 | |
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| 28 | public : |
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| 29 | |
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| 30 | CWindowManager(MPI_Comm winComm, size_t bufferSize) |
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| 31 | { |
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| 32 | const MPI_Aint windowSize=bufferSize+OFFSET_BUFFER ; |
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| 33 | MPI_Win_allocate(windowSize, 1, MPI_INFO_NULL, winComm, &winBuffer_, &window_) ; |
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| 34 | int lock=0 ; |
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| 35 | size_t size=0 ; |
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| 36 | int commRank ; |
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| 37 | MPI_Comm_rank(winComm, &commRank) ; |
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| 38 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, commRank, 0, window_) ; |
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| 39 | MPI_Put(&lock, SIZE_LOCK, MPI_CHAR, commRank, OFFSET_LOCK, SIZE_LOCK, MPI_CHAR, window_) ; |
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| 40 | MPI_Put(&size, SIZE_BUFFER_SIZE, MPI_CHAR, commRank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 41 | MPI_Win_unlock(commRank, window_) ; |
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| 42 | MPI_Barrier(winComm) ; |
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| 43 | } |
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| 44 | |
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| 45 | void lockWindow(int rank, int state ) |
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| 46 | { |
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| 47 | int lock=state ; |
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| 48 | |
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| 49 | do |
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| 50 | { |
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| 51 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
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| 52 | MPI_Compare_and_swap(&WINDOWS_LOCKED, &state, &lock, MPI_INT, rank, OFFSET_LOCK, window_) ; |
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| 53 | MPI_Win_unlock(rank, window_) ; |
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| 54 | } while (lock!=state) ; |
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| 55 | |
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| 56 | |
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| 57 | } |
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| 58 | |
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| 59 | |
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| 60 | void unlockWindow(int rank, int state ) |
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| 61 | { |
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| 62 | int lock ; |
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| 63 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
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| 64 | MPI_Compare_and_swap(&state, &WINDOWS_LOCKED, &lock, MPI_INT, rank, OFFSET_LOCK, window_) ; |
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| 65 | MPI_Win_unlock(rank, window_) ; |
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| 66 | } |
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| 67 | |
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| 68 | template< class T > |
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| 69 | void updateToWindow(int rank, T* object, void (T::*dumpOut)(CBufferOut&) ) |
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| 70 | { |
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| 71 | CBufferOut buffer ; |
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| 72 | (object->*dumpOut)(buffer) ; |
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| 73 | size_t size=buffer.count() ; |
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| 74 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
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| 75 | MPI_Put(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 76 | MPI_Put(buffer.start(), size, MPI_CHAR, rank,OFFSET_BUFFER, size, MPI_CHAR, window_) ; |
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| 77 | MPI_Win_unlock(rank, window_) ; |
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| 78 | } |
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| 79 | |
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| 80 | template< typename T > |
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| 81 | void updateFromWindow(int rank, T* object, void (T::*dumpIn)(CBufferIn&) ) |
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| 82 | { |
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| 83 | size_t size ; |
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| 84 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
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| 85 | MPI_Get(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 86 | MPI_Win_flush(rank,window_) ; |
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| 87 | CBufferIn buffer(size) ; |
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| 88 | MPI_Get(buffer.start(), size, MPI_CHAR, rank,OFFSET_BUFFER, size, MPI_CHAR, window_) ; |
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| 89 | MPI_Win_unlock(rank, window_) ; |
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| 90 | (object->*dumpIn)(buffer) ; |
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| 91 | } |
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| 92 | |
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| 93 | template< class T > |
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| 94 | void pushToWindow(int rank, T* object, void (T::*dumpOut)(CBufferOut&) ) |
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| 95 | { |
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| 96 | size_t size ; |
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| 97 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
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| 98 | MPI_Get(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 99 | MPI_Win_flush(rank,window_) ; |
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| 100 | CBufferOut buffer ; |
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| 101 | (object->*dumpOut)(buffer) ; |
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| 102 | size_t bufferSize=buffer.count() ; |
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| 103 | size_t newSize = size + bufferSize; |
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| 104 | MPI_Put(&newSize, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 105 | MPI_Put(buffer.start(), bufferSize, MPI_CHAR, rank, OFFSET_BUFFER+size, bufferSize, MPI_CHAR, window_) ; |
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| 106 | MPI_Win_unlock(rank, window_) ; |
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| 107 | } |
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| 108 | |
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| 109 | template< typename T > |
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| 110 | void popFromWindow(int rank, T* object, void (T::*dumpIn)(CBufferIn&) ) |
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| 111 | { |
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| 112 | size_t size ; |
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| 113 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
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| 114 | MPI_Get(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 115 | MPI_Win_flush(rank,window_) ; |
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| 116 | CBufferIn buffer(size) ; |
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| 117 | MPI_Get(buffer.start(), size, MPI_CHAR, rank,OFFSET_BUFFER, size, MPI_CHAR, window_) ; |
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| 118 | MPI_Win_flush(rank,window_) ; |
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| 119 | (object->*dumpIn)(buffer) ; |
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| 120 | |
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| 121 | size=buffer.remain() ; |
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| 122 | MPI_Put(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
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| 123 | MPI_Put(buffer.ptr(),buffer.remain(), MPI_CHAR, rank, OFFSET_BUFFER, buffer.remain(), MPI_CHAR, window_) ; |
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| 124 | MPI_Win_unlock(rank, window_) ; |
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| 125 | |
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| 126 | } |
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| 127 | |
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[1764] | 128 | ~CWindowManager() |
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| 129 | { |
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| 130 | MPI_Win_free(&window_) ; |
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| 131 | } |
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[1761] | 132 | } ; |
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| 133 | } |
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| 134 | |
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| 135 | |
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| 136 | |
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| 137 | #endif |
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