1 | /*! |
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2 | \file ep_recv.cpp |
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3 | \since 2 may 2016 |
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4 | |
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5 | \brief Definitions of MPI receive functions: MPI_Recv, MPI_Mrecv, MPI_Irecv, MPI_Imrecv |
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6 | */ |
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7 | |
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8 | |
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9 | #include "ep_lib.hpp" |
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10 | #include <mpi.h> |
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11 | #include "ep_declaration.hpp" |
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12 | |
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13 | using namespace std; |
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14 | |
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15 | |
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16 | namespace ep_lib |
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17 | { |
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18 | |
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19 | |
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20 | int MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status) |
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21 | { |
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22 | int dest_rank; |
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23 | MPI_Comm_rank(comm, &dest_rank); |
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24 | |
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25 | if(!comm.is_ep) |
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26 | { |
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27 | ::MPI_Comm mpi_comm = static_cast< ::MPI_Comm >(comm.mpi_comm); |
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28 | ::MPI_Status mpi_status; |
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29 | ::MPI_Recv(buf, count, static_cast< ::MPI_Datatype >(datatype), src<0? MPI_ANY_SOURCE : src, tag<0? MPI_ANY_TAG: tag, mpi_comm, &mpi_status); |
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30 | |
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31 | status->ep_src = src; |
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32 | status->ep_tag = tag; |
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33 | status->ep_datatype = datatype; |
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34 | |
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35 | return 0; |
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36 | } |
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37 | |
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38 | Message_Check(comm); |
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39 | |
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40 | MPI_Request request; |
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41 | MPI_Irecv(buf, count, datatype, src, tag, comm, &request); |
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42 | MPI_Wait(&request, status); |
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43 | |
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44 | return 0; |
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45 | } |
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46 | |
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47 | |
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48 | |
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49 | |
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50 | int MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Request *request) |
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51 | { |
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52 | |
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53 | Debug("MPI_Irecv with EP"); |
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54 | int dest_rank; |
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55 | MPI_Comm_rank(comm, &dest_rank); |
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56 | |
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57 | if(!comm.is_ep) |
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58 | { |
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59 | ::MPI_Request mpi_request; |
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60 | ::MPI_Comm mpi_comm = static_cast< ::MPI_Comm > (comm.mpi_comm); |
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61 | ::MPI_Irecv(buf, count, static_cast< ::MPI_Datatype> (datatype), src<0? MPI_ANY_SOURCE : src, tag<0? MPI_ANY_TAG: tag, mpi_comm, &mpi_request); |
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62 | |
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63 | request->mpi_request = mpi_request; |
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64 | request->ep_src = src; |
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65 | request->ep_datatype = datatype; |
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66 | request->ep_tag = tag; |
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67 | } |
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68 | |
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69 | request->mpi_request = MPI_REQUEST_NULL_STD; |
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70 | request->buf = buf; |
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71 | request->comm = comm; |
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72 | request->type = 2; |
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73 | |
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74 | request->ep_src = src; |
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75 | request->ep_tag = tag; |
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76 | request->ep_datatype = datatype; |
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77 | |
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78 | /* With Improbe*/ |
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79 | Message_Check(comm); |
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80 | |
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81 | EP_PendingRequests->push_back(request); |
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82 | printf("proc %d : EP_PendingRequests insert one request, add = %p(%p), buf = %p(%p)\n", dest_rank, EP_PendingRequests->back(), request, buf, request->buf); |
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83 | |
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84 | // check all EP_PendingRequests |
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85 | |
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86 | //if(EP_PendingRequests == 0 ) EP_PendingRequests = new std::list< MPI_Request* >; |
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87 | if(!EP_PendingRequests->empty()) |
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88 | { |
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89 | printf("proc %d have %d pending irecv request\n", dest_rank, EP_PendingRequests->size()); |
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90 | |
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91 | for(std::list<MPI_Request* >::iterator it = EP_PendingRequests->begin(); it!=EP_PendingRequests->end(); ) |
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92 | { |
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93 | if((*it)->type != 2) |
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94 | { |
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95 | printf("proc %d : pending request type = %d, src= %d, tag = %d, add = %p skip\n", dest_rank, (*it)->type, (*it)->ep_src, (*it)->ep_tag, *it); |
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96 | EP_PendingRequests->erase(it); |
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97 | it = EP_PendingRequests->begin(); |
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98 | printf("proc %d : pending request processed, size = %d, it = %p\n", dest_rank, EP_PendingRequests->size(), *it); |
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99 | continue; |
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100 | } |
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101 | |
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102 | printf("proc %d : pending irecv request src = %d, tag = %d, type = %d, add = %p\n", dest_rank, (*it)->ep_src, (*it)->ep_tag, (*it)->type, *it); |
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103 | int probed = false; |
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104 | MPI_Message pending_message; |
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105 | MPI_Status pending_status; |
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106 | |
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107 | MPI_Improbe((*it)->ep_src, (*it)->ep_tag, (*it)->comm, &probed, &pending_message, &pending_status); |
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108 | printf("proc %d : pending irecv request probed to be %d, add = %p\n",dest_rank, probed, *it); |
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109 | |
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110 | if(probed) |
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111 | { |
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112 | int count; |
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113 | MPI_Get_count(&pending_status, (*it)->ep_datatype, &count); |
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114 | MPI_Imrecv((*it)->buf, count, (*it)->ep_datatype, &pending_message, *it); |
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115 | printf("proc %d : pending request is imrecving src = %d, tag = %d, add = %p, buf = %p, count = %d\n", dest_rank, (*it)->ep_src, (*it)->ep_tag, *it, (*it)->buf, count); |
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116 | EP_PendingRequests->erase(it); |
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117 | it = EP_PendingRequests->begin(); |
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118 | printf("proc %d : pending request processed, size = %d\n", dest_rank, EP_PendingRequests->size()); |
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119 | continue; |
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120 | } |
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121 | else it++; |
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122 | } |
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123 | } |
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124 | /* |
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125 | int flag = false; |
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126 | MPI_Message message; |
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127 | MPI_Status status; |
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128 | |
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129 | MPI_Improbe(src, tag, comm, &flag, &message, &status); |
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130 | |
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131 | if(flag) |
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132 | { |
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133 | MPI_Imrecv(buf, count, datatype, &message, request); |
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134 | printf("proc %d : found message in local queue, src = %d, tag = %d\n", dest_rank, src, tag); |
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135 | } |
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136 | */ |
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137 | |
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138 | return 0; |
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139 | } |
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140 | |
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141 | int MPI_Imrecv(void *buf, int count, MPI_Datatype datatype, MPI_Message *message, MPI_Request *request) |
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142 | { |
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143 | Debug("MPI_Imrecv"); |
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144 | |
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145 | request->type = 3; |
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146 | |
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147 | ::MPI_Request mpi_request; |
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148 | ::MPI_Message mpi_message = static_cast< ::MPI_Message >(message->mpi_message); |
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149 | |
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150 | ::MPI_Imrecv(buf, count, static_cast< ::MPI_Datatype>(datatype), &mpi_message, &mpi_request); |
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151 | |
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152 | request->mpi_request = mpi_request; |
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153 | request->ep_datatype = datatype; |
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154 | request->ep_tag = message->ep_tag; |
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155 | request->ep_src = message->ep_src; |
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156 | //request->buf = buf; |
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157 | |
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158 | return 0; |
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159 | } |
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160 | |
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161 | |
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162 | int MPI_Mrecv(void *buf, int count, MPI_Datatype datatype, MPI_Message *message, MPI_Status *status) |
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163 | { |
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164 | Debug("EP Mrecv called\n"); |
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165 | |
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166 | ::MPI_Status mpi_status; |
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167 | ::MPI_Message mpi_message = static_cast< ::MPI_Message >(message->mpi_message); |
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168 | |
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169 | ::MPI_Mrecv(buf, count, static_cast< ::MPI_Datatype>(datatype), &mpi_message, &mpi_status); |
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170 | |
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171 | status->mpi_status = new ::MPI_Status(mpi_status); |
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172 | status->ep_src = message->ep_src; |
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173 | status->ep_datatype = datatype; |
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174 | status->ep_tag = message->ep_tag; |
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175 | |
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176 | //check_sum_recv(buf, count, datatype, message->ep_src, message->ep_tag); |
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177 | |
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178 | return 0; |
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179 | } |
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180 | |
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181 | } |
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182 | |
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183 | |
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