[591] | 1 | #include "xios_spl.hpp" |
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[300] | 2 | #include "exception.hpp" |
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| 3 | #include "buffer_server.hpp" |
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| 4 | |
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[509] | 5 | |
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[335] | 6 | namespace xios |
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[300] | 7 | { |
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| 8 | |
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[1757] | 9 | CServerBuffer::CServerBuffer(vector<MPI_Win>& windows, vector<MPI_Aint>& winAddress, int windowsRank, StdSize buffSize) |
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| 10 | : hasWindows(true), windows_(windows), windowsRank_(windowsRank), winAddress_(winAddress) |
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[300] | 11 | { |
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[885] | 12 | size = 3 * buffSize; |
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[717] | 13 | first = 0; |
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| 14 | current = 1; |
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| 15 | end = size; |
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[1757] | 16 | used=0 ; |
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[717] | 17 | buffer = new char[size]; // use MPI_ALLOC_MEM later? |
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[1757] | 18 | currentWindows=1 ; |
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| 19 | if (windows[0]==MPI_WIN_NULL && windows[1]==MPI_WIN_NULL) hasWindows=false ; |
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[300] | 20 | } |
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| 21 | |
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| 22 | CServerBuffer::~CServerBuffer() |
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| 23 | { |
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| 24 | delete [] buffer ; |
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| 25 | } |
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| 26 | |
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[1757] | 27 | void CServerBuffer::updateCurrentWindows(void) |
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| 28 | { |
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| 29 | if (currentWindows==0) currentWindows=1 ; |
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| 30 | else currentWindows=0 ; |
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| 31 | } |
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[509] | 32 | |
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[1757] | 33 | /* |
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| 34 | void CServerBuffer::createWindows(MPI_Comm oneSidedComm) |
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| 35 | { |
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| 36 | MPI_Barrier(oneSidedComm) ; |
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| 37 | MPI_Win_create(NULL, 0, 1, MPI_INFO_NULL, oneSidedComm, &(windows[0])) ; |
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| 38 | MPI_Win_create(NULL, 0, 1, MPI_INFO_NULL, oneSidedComm, &(windows[1])) ; |
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| 39 | hasWindows=true ; |
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| 40 | updateCurrentWindows() ; |
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| 41 | MPI_Barrier(oneSidedComm) ; |
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| 42 | } |
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| 43 | */ |
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| 44 | |
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| 45 | /* |
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| 46 | bool CServerBuffer::freeWindows() |
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| 47 | { |
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| 48 | if (hasWindows) |
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| 49 | { |
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| 50 | size_t header[3] ; |
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| 51 | size_t& control=header[2] ; |
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| 52 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE,0,0,windows_[0]) ; |
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| 53 | MPI_Get(&control, 1, MPI_LONG_LONG_INT, windowsRank , 2*sizeof(size_t), 1, MPI_LONG_LONG_INT,windows[0]) ; |
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| 54 | MPI_Win_unlock(0,windows[0]) ; |
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| 55 | if (control==2) // ok for free windows |
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| 56 | { |
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| 57 | MPI_Win_free( &(windows[0])) ; |
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| 58 | MPI_Win_free( &(windows[1])) ; |
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| 59 | hasWindows=false ; |
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| 60 | return true ; |
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| 61 | } |
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| 62 | else return false ; |
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| 63 | } |
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| 64 | else return true ; |
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| 65 | } |
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| 66 | */ |
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| 67 | |
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[300] | 68 | bool CServerBuffer::isBufferFree(size_t count) |
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| 69 | { |
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| 70 | bool ret ; |
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[509] | 71 | |
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[300] | 72 | if (count==0) return true ; |
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[509] | 73 | |
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[300] | 74 | if (current>first) |
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| 75 | { |
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| 76 | if (current+count<size) |
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| 77 | { |
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| 78 | ret=true ; |
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| 79 | } |
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| 80 | else if (current+count==size) |
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| 81 | { |
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| 82 | if (first>0) |
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| 83 | { |
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| 84 | ret=true ; |
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| 85 | } |
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| 86 | else |
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| 87 | { |
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| 88 | ret=false ; |
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| 89 | } |
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| 90 | } |
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| 91 | else |
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| 92 | { |
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| 93 | if (count<first) |
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| 94 | { |
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| 95 | ret=true ; |
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| 96 | } |
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| 97 | else |
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| 98 | { |
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| 99 | ret=false ; |
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| 100 | } |
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| 101 | } |
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| 102 | } |
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| 103 | else |
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| 104 | { |
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| 105 | if (current+count<first) |
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| 106 | { |
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| 107 | ret=true ; |
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| 108 | } |
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| 109 | else |
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| 110 | { |
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| 111 | ret=false ; |
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| 112 | } |
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| 113 | } |
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| 114 | |
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| 115 | return ret ; |
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| 116 | } |
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| 117 | |
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[1757] | 118 | bool CServerBuffer::isBufferEmpty(void) |
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| 119 | { |
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| 120 | if (used==0) return true ; |
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| 121 | else return false; |
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| 122 | } |
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[509] | 123 | |
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[300] | 124 | void* CServerBuffer::getBuffer(size_t count) |
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| 125 | { |
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| 126 | char* ret ; |
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[509] | 127 | |
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[300] | 128 | if (count==0) return buffer+current ; |
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[509] | 129 | |
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[300] | 130 | if (current>first) |
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| 131 | { |
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| 132 | if (current+count<size) |
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| 133 | { |
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| 134 | ret=buffer+current ; |
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| 135 | current+=count ; |
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| 136 | } |
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| 137 | else if (current+count==size) |
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| 138 | { |
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| 139 | if (first>0) |
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| 140 | { |
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| 141 | ret=buffer+current ; |
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| 142 | current=0 ; |
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| 143 | } |
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| 144 | else |
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| 145 | { |
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| 146 | ERROR("void* CServerBuffer::getBuffer(size_t count)", |
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| 147 | <<"cannot allocate required size in buffer") ; |
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| 148 | } |
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| 149 | } |
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| 150 | else |
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| 151 | { |
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| 152 | end=current ; |
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| 153 | if (count<first) |
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| 154 | { |
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| 155 | ret=buffer ; |
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| 156 | current=count ; |
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| 157 | } |
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| 158 | else |
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| 159 | { |
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| 160 | ERROR("void* CServerBuffer::getBuffer(size_t count)", |
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| 161 | <<"cannot allocate required size in buffer") ; |
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| 162 | } |
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| 163 | } |
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| 164 | } |
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| 165 | else |
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| 166 | { |
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| 167 | if (current+count<first) |
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| 168 | { |
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| 169 | ret=buffer+current ; |
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| 170 | current+=count ; |
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| 171 | } |
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| 172 | else |
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| 173 | { |
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| 174 | ERROR("void* CServerBuffer::getBuffer(size_t count)", |
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| 175 | <<"cannot allocate required size in buffer") ; |
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| 176 | } |
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| 177 | } |
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| 178 | |
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[1757] | 179 | used+=count ; |
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[300] | 180 | return ret ; |
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| 181 | } |
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[509] | 182 | |
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[300] | 183 | void CServerBuffer::freeBuffer(size_t count) |
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| 184 | { |
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| 185 | if (count==0) return ; |
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| 186 | |
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[509] | 187 | if (first==end-1) |
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[300] | 188 | { |
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| 189 | first=0 ; |
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| 190 | count-- ; |
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| 191 | end=size ; |
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| 192 | } |
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| 193 | |
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| 194 | if (first<=current) |
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| 195 | { |
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[509] | 196 | if (first+count <current) |
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[300] | 197 | { |
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| 198 | first+=count ; |
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| 199 | } |
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| 200 | else |
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| 201 | { |
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| 202 | ERROR("void CServerBuffer::freeBuffer(size_t count)", |
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| 203 | <<"cannot free required size in buffer") ; |
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| 204 | } |
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[509] | 205 | |
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[300] | 206 | } |
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| 207 | else |
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| 208 | { |
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| 209 | if (first+count<end) |
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| 210 | { |
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| 211 | first+=count ; |
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| 212 | } |
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| 213 | else |
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| 214 | { |
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| 215 | ERROR("void CServerBuffer::freeBuffer(size_t count)", |
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| 216 | <<"cannot free required size in buffer") ; |
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| 217 | } |
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| 218 | } |
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[1757] | 219 | used-=count ; |
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[509] | 220 | } |
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| 221 | |
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[1757] | 222 | bool CServerBuffer::getBufferFromClient(size_t timeLine, char*& buffer, size_t& count) |
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| 223 | { |
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| 224 | if (!hasWindows) return false ; |
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| 225 | |
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| 226 | |
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| 227 | size_t header[3] ; |
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| 228 | size_t& clientTimeline=header[0] ; |
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| 229 | size_t& clientCount=header[1] ; |
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| 230 | size_t& control=header[2] ; |
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| 231 | bool ok=false ; |
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| 232 | |
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| 233 | MPI_Group group ; |
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| 234 | int groupSize,groupRank ; |
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| 235 | MPI_Win_get_group(windows_[currentWindows], &group) ; |
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| 236 | MPI_Group_size(group, &groupSize) ; |
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| 237 | MPI_Group_rank(group, &groupRank) ; |
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| 238 | |
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| 239 | lockBuffer(); |
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| 240 | |
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| 241 | // lock is acquired |
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| 242 | |
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| 243 | MPI_Get(&clientTimeline, 1, MPI_LONG_LONG_INT, windowsRank_ , MPI_Aint_add(winAddress_[currentWindows],0), 1, MPI_LONG_LONG_INT,windows_[currentWindows]) ; |
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| 244 | MPI_Get(&clientCount, 1, MPI_LONG_LONG_INT, windowsRank_ , MPI_Aint_add(winAddress_[currentWindows],sizeof(size_t)), 1, MPI_LONG_LONG_INT,windows_[currentWindows]) ; |
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| 245 | MPI_Win_flush(windowsRank_, windows_[currentWindows]) ; |
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| 246 | |
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| 247 | // control=1 ; |
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| 248 | // MPI_Put(&control, 1, MPI_LONG_LONG_INT, windowsRank_ , MPI_Aint_add(winAddress_[currentWindows],2*sizeof(size_t)), 1, MPI_LONG_LONG_INT,windows_[currentWindows]) ; |
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| 249 | |
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| 250 | // MPI_Win_unlock(windowsRank_, windows_[currentWindows]) ; |
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| 251 | MPI_Win_flush(windowsRank_, windows_[currentWindows]) ; |
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| 252 | // info(100)<<"getBufferFromClient : windowsRank "<<windowsRank_<<" timeline "<<timeLine<<" clientTimeline "<<clientTimeline<<" clientCount "<<clientCount<<endl ; |
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| 253 | if (timeLine==clientTimeline) |
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| 254 | { |
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| 255 | // info(50)<<"getBufferFromClient timeLine==clientTimeLine: windowsRank "<<windowsRank_<<" timeline "<<timeLine<<" clientTimeline "<<clientTimeline<<" clientCount "<<clientCount<<endl ; |
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| 256 | |
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| 257 | // MPI_Win_lock(MPI_LOCK_EXCLUSIVE,windowsRank_,0,windows_[currentWindows]) ; |
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| 258 | buffer=(char*)getBuffer(clientCount) ; |
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| 259 | count=clientCount ; |
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| 260 | MPI_Get(buffer, clientCount, MPI_CHAR, windowsRank_, MPI_Aint_add(winAddress_[currentWindows],4*sizeof(size_t)) , clientCount, MPI_CHAR, windows_[currentWindows]) ; |
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| 261 | clientTimeline = 0 ; |
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| 262 | clientCount = 0 ; |
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| 263 | // control=0 ; |
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| 264 | MPI_Put(&header[0], 2, MPI_LONG_LONG_INT, windowsRank_, MPI_Aint_add(winAddress_[currentWindows],0) , 2, MPI_LONG_LONG_INT,windows_[currentWindows]) ; |
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| 265 | |
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| 266 | // release lock |
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| 267 | unlockBuffer() ; |
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| 268 | |
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| 269 | ok=true ; |
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| 270 | char checksum=0 ; |
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| 271 | for(size_t i=0;i<count;i++) checksum=checksum+buffer[i] ; |
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| 272 | char checksumFirst=0 ; |
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| 273 | for(size_t i=5; i<10 && i<count ;i++) checksumFirst=checksumFirst+buffer[i] ; |
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| 274 | char checksumLast=0 ; |
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| 275 | for(size_t i=(count<10)?0:count-10; i<count ; i++) checksumLast=checksumLast+buffer[i] ; |
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| 276 | |
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| 277 | info(40)<<"getBufferFromClient timeLine==clientTimeLine: windowsRank "<<windowsRank_<<" timeline "<<timeLine<<" clientTimeline " |
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| 278 | <<clientTimeline<<" clientCount "<<count<<" checksum "<<(int)checksum<<" " |
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| 279 | <<(int)buffer[0]<<" "<<(int)buffer[1]<<" "<<(int)buffer[2]<<" "<<(int)buffer[3]<<" "<<(int)buffer[4]<<" "<<(int)buffer[5]<<" " |
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| 280 | <<(int)buffer[6]<<" "<<(int)buffer[7]<<" "<<(int)buffer[8]<<" "<<(int)buffer[9]<<" "<<(int)buffer[10]<<" "<<(int)buffer[11]<<endl ; |
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| 281 | |
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| 282 | } |
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| 283 | else |
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| 284 | { |
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| 285 | //MPI_Win_lock(MPI_LOCK_EXCLUSIVE,windowsRank_,0,windows_[currentWindows]) ; |
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| 286 | //control=0 ; |
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| 287 | //MPI_Put(&control, 1, MPI_LONG_LONG_INT, windowsRank_ , MPI_Aint_add(winAddress_[currentWindows],2*sizeof(size_t)), 1, MPI_LONG_LONG_INT,windows_[currentWindows]) ; |
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| 288 | |
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| 289 | // release lock |
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| 290 | unlockBuffer() ; |
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| 291 | } |
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| 292 | |
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| 293 | if (ok) return true ; |
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| 294 | |
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| 295 | return false ; |
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| 296 | } |
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| 297 | |
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| 298 | void CServerBuffer::lockBuffer(void) |
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| 299 | { |
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| 300 | if (!hasWindows) return ; |
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| 301 | |
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| 302 | long long int lock=1 ; |
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| 303 | long long int zero=0, one=1 ; |
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| 304 | // control=1 ; |
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| 305 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE,windowsRank_,0,windows_[currentWindows]) ; |
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| 306 | while(lock!=0) |
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| 307 | { |
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| 308 | MPI_Compare_and_swap(&one, &zero, &lock, MPI_LONG_LONG_INT, windowsRank_, MPI_Aint_add(winAddress_[currentWindows],2*sizeof(size_t)), |
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| 309 | windows_[currentWindows]) ; |
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| 310 | MPI_Win_flush(windowsRank_, windows_[currentWindows]) ; |
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| 311 | } |
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| 312 | } |
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| 313 | |
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| 314 | void CServerBuffer::unlockBuffer(void) |
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| 315 | { |
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| 316 | if (!hasWindows) return ; |
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| 317 | long long int lock=1 ; |
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| 318 | long long int zero=0, one=1 ; |
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| 319 | |
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| 320 | MPI_Compare_and_swap(&zero, &one, &lock, MPI_LONG_LONG_INT, windowsRank_, MPI_Aint_add(winAddress_[currentWindows],2*sizeof(size_t)), |
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| 321 | windows_[currentWindows]) ; |
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| 322 | MPI_Win_flush(windowsRank_, windows_[currentWindows]) ; |
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| 323 | MPI_Win_unlock(windowsRank_,windows_[currentWindows]) ; |
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| 324 | } |
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| 325 | |
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| 326 | void CServerBuffer::notifyClientFinalize(void) |
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| 327 | { |
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| 328 | if (!hasWindows) return ; |
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| 329 | size_t finalize=1 ; |
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| 330 | lockBuffer(); |
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| 331 | // lock is acquired |
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| 332 | MPI_Put(&finalize, 1, MPI_LONG_LONG_INT, windowsRank_ , MPI_Aint_add(winAddress_[currentWindows],3*sizeof(size_t)), 1, MPI_LONG_LONG_INT,windows_[currentWindows]) ; |
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| 333 | unlockBuffer() ; |
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| 334 | } |
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[300] | 335 | } |
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