[300] | 1 | #include "xmlioserver_spl.hpp" |
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| 2 | #include "exception.hpp" |
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| 3 | #include "buffer_server.hpp" |
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[317] | 4 | #include "cxios.hpp" |
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[300] | 5 | |
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[335] | 6 | namespace xios |
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[300] | 7 | { |
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| 8 | |
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| 9 | CServerBuffer::CServerBuffer(void) |
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| 10 | { |
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[317] | 11 | bufferSizeByClient=CXios::bufferSize*CXios::bufferServerFactorSize ; |
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[300] | 12 | size=bufferSizeByClient ; |
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| 13 | first=0 ; |
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| 14 | current=1 ; |
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| 15 | end=size ; |
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| 16 | buffer=new char[size] ; // change later for MPI_ALLOC_MEM later |
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| 17 | } |
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| 18 | |
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| 19 | CServerBuffer::~CServerBuffer() |
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| 20 | { |
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| 21 | delete [] buffer ; |
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| 22 | } |
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| 23 | |
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| 24 | |
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| 25 | bool CServerBuffer::isBufferFree(size_t count) |
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| 26 | { |
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| 27 | bool ret ; |
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| 28 | |
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| 29 | if (count==0) return true ; |
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| 30 | |
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| 31 | if (current>first) |
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| 32 | { |
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| 33 | if (current+count<size) |
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| 34 | { |
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| 35 | ret=true ; |
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| 36 | } |
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| 37 | else if (current+count==size) |
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| 38 | { |
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| 39 | if (first>0) |
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| 40 | { |
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| 41 | ret=true ; |
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| 42 | } |
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| 43 | else |
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| 44 | { |
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| 45 | ret=false ; |
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| 46 | } |
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| 47 | } |
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| 48 | else |
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| 49 | { |
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| 50 | if (count<first) |
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| 51 | { |
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| 52 | ret=true ; |
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| 53 | } |
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| 54 | else |
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| 55 | { |
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| 56 | ret=false ; |
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| 57 | } |
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| 58 | } |
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| 59 | } |
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| 60 | else |
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| 61 | { |
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| 62 | if (current+count<first) |
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| 63 | { |
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| 64 | ret=true ; |
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| 65 | } |
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| 66 | else |
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| 67 | { |
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| 68 | ret=false ; |
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| 69 | } |
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| 70 | } |
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| 71 | |
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| 72 | return ret ; |
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| 73 | } |
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| 74 | |
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| 75 | |
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| 76 | void* CServerBuffer::getBuffer(size_t count) |
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| 77 | { |
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| 78 | char* ret ; |
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| 79 | |
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| 80 | if (count==0) return buffer+current ; |
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| 81 | |
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| 82 | if (current>first) |
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| 83 | { |
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| 84 | if (current+count<size) |
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| 85 | { |
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| 86 | ret=buffer+current ; |
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| 87 | current+=count ; |
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| 88 | } |
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| 89 | else if (current+count==size) |
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| 90 | { |
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| 91 | if (first>0) |
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| 92 | { |
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| 93 | ret=buffer+current ; |
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| 94 | current=0 ; |
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| 95 | } |
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| 96 | else |
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| 97 | { |
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| 98 | ERROR("void* CServerBuffer::getBuffer(size_t count)", |
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| 99 | <<"cannot allocate required size in buffer") ; |
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| 100 | } |
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| 101 | } |
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| 102 | else |
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| 103 | { |
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| 104 | end=current ; |
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| 105 | if (count<first) |
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| 106 | { |
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| 107 | ret=buffer ; |
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| 108 | current=count ; |
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| 109 | } |
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| 110 | else |
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| 111 | { |
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| 112 | ERROR("void* CServerBuffer::getBuffer(size_t count)", |
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| 113 | <<"cannot allocate required size in buffer") ; |
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| 114 | } |
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| 115 | } |
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| 116 | } |
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| 117 | else |
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| 118 | { |
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| 119 | if (current+count<first) |
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| 120 | { |
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| 121 | ret=buffer+current ; |
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| 122 | current+=count ; |
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| 123 | } |
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| 124 | else |
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| 125 | { |
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| 126 | ERROR("void* CServerBuffer::getBuffer(size_t count)", |
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| 127 | <<"cannot allocate required size in buffer") ; |
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| 128 | } |
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| 129 | } |
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| 130 | |
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| 131 | return ret ; |
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| 132 | } |
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| 133 | |
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| 134 | void CServerBuffer::freeBuffer(size_t count) |
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| 135 | { |
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| 136 | if (count==0) return ; |
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| 137 | |
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| 138 | if (first==end-1) |
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| 139 | { |
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| 140 | first=0 ; |
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| 141 | count-- ; |
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| 142 | end=size ; |
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| 143 | } |
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| 144 | |
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| 145 | if (first<=current) |
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| 146 | { |
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| 147 | if (first+count <current) |
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| 148 | { |
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| 149 | first+=count ; |
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| 150 | } |
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| 151 | else |
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| 152 | { |
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| 153 | ERROR("void CServerBuffer::freeBuffer(size_t count)", |
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| 154 | <<"cannot free required size in buffer") ; |
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| 155 | } |
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| 156 | |
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| 157 | } |
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| 158 | else |
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| 159 | { |
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| 160 | if (first+count<end) |
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| 161 | { |
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| 162 | first+=count ; |
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| 163 | } |
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| 164 | else |
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| 165 | { |
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| 166 | ERROR("void CServerBuffer::freeBuffer(size_t count)", |
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| 167 | <<"cannot free required size in buffer") ; |
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| 168 | } |
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| 169 | } |
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| 170 | } |
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| 171 | |
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| 172 | } |
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