1 | /**************************************** |
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2 | * Computer Algebra System SINGULAR * |
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3 | ****************************************/ |
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4 | /* $Id: sing_mp.cc,v 1.34 2000-11-21 15:35:46 Singular Exp $ */ |
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5 | |
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6 | /* |
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7 | * ABSTRACT: interface to MP links |
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8 | */ |
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9 | |
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10 | #include "mod2.h" |
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11 | |
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12 | #ifdef HAVE_MPSR |
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13 | |
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14 | #include <stdio.h> |
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15 | #include <string.h> |
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16 | #include <unistd.h> |
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17 | #include "mpsr.h" |
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18 | #include "tok.h" |
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19 | #include "omalloc.h" |
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20 | #include "febase.h" |
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21 | #include "subexpr.h" |
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22 | #include "ipid.h" |
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23 | #include "silink.h" |
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24 | #include "feOpt.h" |
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25 | |
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26 | static int Batch_ReadEval(si_link silink); |
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27 | |
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28 | #ifdef MPSR_DEBUG |
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29 | #define MP_SET_LINK_OPTIONS(link) \ |
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30 | if (link != NULL) \ |
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31 | MP_SetLinkOption(link,MP_LINK_LOG_MASK_OPT,MP_LOG_ALL_EVENTS) |
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32 | #else |
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33 | #define MP_SET_LINK_OPTIONS(link) ((void *) 0) |
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34 | #endif |
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35 | |
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36 | MP_Env_pt mp_Env = NULL; |
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37 | |
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38 | /* =============== general utilities ====================================== */ |
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39 | static void FreeCmdArgs(int argc, char** argv) |
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40 | { |
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41 | int i; |
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42 | for (i=0; i<argc; i++) |
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43 | omFree(argv[i]); |
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44 | |
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45 | if (argv) omFreeSize(argv, argc*sizeof(char *)); |
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46 | } |
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47 | |
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48 | static void GetCmdArgs(int *argc, char ***argv, char *str) |
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49 | { |
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50 | if (str == NULL || str[0] == '\0') |
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51 | { |
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52 | *argc = 0; |
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53 | *argv = NULL; |
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54 | } |
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55 | else |
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56 | { |
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57 | int i = 0, sl = strlen(str)+1, j; |
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58 | char *s2=omStrDup(str); |
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59 | |
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60 | char *appl = strstr(s2, "--MPapplication"); |
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61 | if (appl != NULL) |
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62 | { |
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63 | if (appl != s2) *(appl-1) = '\0'; |
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64 | i = 2; |
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65 | } |
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66 | |
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67 | if (appl != s2) |
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68 | { |
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69 | if (strtok(s2, " ") != NULL) |
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70 | { |
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71 | i++; |
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72 | while (strtok(NULL," ") != NULL) i++; |
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73 | } |
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74 | } |
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75 | |
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76 | *argc = i; |
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77 | if (i>0) |
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78 | { |
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79 | *argv = (char **) omAlloc0(i*sizeof(char *)); |
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80 | if (appl != NULL) i -= 2; |
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81 | if (i>0) |
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82 | { |
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83 | strcpy(s2,str); |
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84 | *argv[0] = omStrDup(strtok(s2, " ")); |
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85 | for(j = 1; j <i; j++) |
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86 | (*argv)[j] = omStrDup(strtok(NULL, " ")); |
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87 | } |
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88 | } |
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89 | else |
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90 | *argv = NULL; |
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91 | |
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92 | if (appl != NULL) |
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93 | { |
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94 | (*argv)[*argc -2] = omStrDup("--MPapplication"); |
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95 | (*argv)[*argc -1] = omStrDup(&(appl[15])); |
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96 | } |
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97 | |
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98 | omFree(s2); |
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99 | } |
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100 | |
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101 | } |
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102 | |
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103 | /*************************************************************** |
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104 | * |
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105 | * MPfile specific stuff |
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106 | * |
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107 | ***************************************************************/ |
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108 | static BOOLEAN slOpenMPFile(si_link l, short flag) |
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109 | { |
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110 | char *argv[] = {"--MPtransp", "FILE", "--MPmode", "append", |
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111 | "--MPfile", "/tmp/mpout"}; |
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112 | char *mode; |
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113 | |
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114 | MP_Link_pt link = NULL; |
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115 | |
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116 | if (flag == SI_LINK_OPEN) |
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117 | { |
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118 | if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0)) |
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119 | flag = SI_LINK_READ; |
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120 | else flag = SI_LINK_WRITE; |
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121 | } |
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122 | |
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123 | if (l->name[0] != '\0') argv[5] = l->name; |
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124 | else l->name = omStrDup(argv[5]); |
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125 | |
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126 | |
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127 | if (flag == SI_LINK_READ) |
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128 | { |
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129 | argv[3] = "read"; |
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130 | mode = "r"; |
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131 | } |
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132 | else if (strcmp(l->mode, "w") == 0) |
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133 | { |
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134 | argv[3] = "write"; |
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135 | mode = "w"; |
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136 | } |
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137 | else |
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138 | { |
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139 | mode = "a"; |
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140 | } |
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141 | |
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142 | if (mp_Env == NULL) |
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143 | mp_Env = MP_InitializeEnv(MP_AllocateEnv()); |
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144 | |
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145 | if (mp_Env == NULL || (MPT_Init(mp_Env) != MPT_Success)) |
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146 | { |
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147 | WerrorS("Open: Error in initialization of MP environment"); |
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148 | return TRUE; |
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149 | } |
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150 | |
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151 | if ((link = MP_OpenLink(mp_Env, 6, argv)) == NULL) |
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152 | return TRUE; |
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153 | |
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154 | MP_SET_LINK_OPTIONS(link); |
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155 | l->data = (void *) link; |
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156 | SI_LINK_SET_OPEN_P(l, flag); |
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157 | omFree(l->mode); |
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158 | l->mode = omStrDup(mode); |
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159 | return FALSE; |
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160 | } |
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161 | |
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162 | /*************************************************************** |
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163 | * |
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164 | * MPtcp specific stuff |
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165 | * |
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166 | ***************************************************************/ |
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167 | |
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168 | static MP_Link_pt slOpenMPConnect(int n_argc, char **n_argv) |
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169 | { |
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170 | char *argv[] = {"--MPtransp", "TCP", "--MPmode", "connect", "--MPport", |
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171 | "1025", "--MPhost", "localhost"}; |
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172 | |
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173 | char *port = IMP_GetCmdlineArg(n_argc, n_argv, "--MPport"); |
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174 | char *host = IMP_GetCmdlineArg(n_argc, n_argv, "--MPhost"); |
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175 | |
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176 | if (port == NULL) port = (char*) feOptValue(FE_OPT_MPPORT); |
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177 | if (host == NULL) host = (char*) feOptValue(FE_OPT_MPHOST); |
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178 | |
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179 | if (port != NULL) |
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180 | argv[5] = port; |
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181 | if (host != NULL) |
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182 | argv[7] = host; |
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183 | else |
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184 | argv[7] = mp_Env->thishost; |
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185 | |
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186 | return MP_OpenLink(mp_Env, 8, argv); |
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187 | } |
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188 | |
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189 | static MP_Link_pt slOpenMPListen(int n_argc, char **n_argv) |
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190 | { |
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191 | char *argv[] = {"--MPtransp", "TCP", "--MPmode", "listen", |
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192 | "--MPport", "1025"}; |
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193 | char *port = IMP_GetCmdlineArg(n_argc, n_argv, "--MPport"); |
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194 | |
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195 | if (port == NULL) port = (char*) feOptValue(FE_OPT_MPHOST); |
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196 | |
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197 | if (port != NULL) argv[5] = port; |
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198 | |
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199 | return MP_OpenLink(mp_Env, 6, argv); |
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200 | } |
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201 | |
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202 | static MP_Link_pt slOpenMPLaunch(int n_argc, char **n_argv) |
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203 | { |
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204 | char *argv[] = {"--MPtransp", "TCP", "--MPmode", "launch", |
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205 | "--MPhost", "localhost", |
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206 | "--MPapplication", "Singular -bq --no-warn --no-out --no-rc", |
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207 | "--MPrsh", "rsh"}; |
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208 | char *appl = IMP_GetCmdlineArg(n_argc, n_argv, "--MPapplication"); |
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209 | char *host = IMP_GetCmdlineArg(n_argc, n_argv, "--MPhost"); |
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210 | char *rsh = IMP_GetCmdlineArg(n_argc, n_argv, "--MPrsh"); |
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211 | char* nappl = NULL; |
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212 | MP_Link_pt link; |
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213 | int argc = 8; |
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214 | |
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215 | if (appl == NULL && (host == NULL || |
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216 | strcmp(host, "localhost") == 0)) |
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217 | { |
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218 | appl = feResource("Singular"); |
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219 | |
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220 | if (appl != NULL) |
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221 | { |
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222 | nappl = (char*) omAlloc(MAXPATHLEN + 50); |
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223 | strcpy(nappl, appl); |
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224 | strcat(nappl, " -bq --no-warn --no-out --no-rc"); |
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225 | appl = nappl; |
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226 | } |
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227 | } |
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228 | |
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229 | if ((host == NULL)||(strcmp(host, "localhost") == 0)) |
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230 | { |
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231 | argv[5] = mp_Env->thishost; |
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232 | } |
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233 | else |
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234 | argv[5] = host; |
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235 | |
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236 | if (appl != NULL) |
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237 | argv[7] = appl; |
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238 | |
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239 | |
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240 | if (rsh != NULL) |
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241 | { |
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242 | argv[9] = rsh; |
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243 | argc = 10; |
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244 | } |
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245 | |
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246 | link = MP_OpenLink(mp_Env, argc, argv); |
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247 | if (nappl != NULL) omFreeSize(nappl, MAXPATHLEN + 50); |
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248 | return link; |
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249 | } |
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250 | |
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251 | static MP_Link_pt slOpenMPFork(si_link l, int n_argc, char **n_argv) |
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252 | { |
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253 | MP_Link_pt link = NULL; |
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254 | char *argv[] = {"--MPtransp", "TCP", "--MPmode", "fork", "--MPport", "1703"}; |
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255 | char *port = IMP_GetCmdlineArg(n_argc, n_argv, "--MPport"); |
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256 | |
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257 | if (port != NULL) argv[5] = port; |
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258 | |
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259 | link = MP_OpenLink(mp_Env, 6, argv); |
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260 | if (link != NULL) |
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261 | { |
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262 | if (MP_GetLinkStatus(link, MP_LinkIsParent)) |
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263 | { |
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264 | /* parent's business */ |
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265 | if (l->name != NULL) omFree(l->name); |
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266 | l->name = omStrDup("parent"); |
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267 | return link; |
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268 | } |
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269 | else |
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270 | { |
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271 | /* child's business -- go into batch mode */ |
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272 | if (l->name != NULL) omFree(l->name); |
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273 | l->name = omStrDup("child"); |
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274 | MP_SET_LINK_OPTIONS(link); |
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275 | SI_LINK_SET_RW_OPEN_P(l); |
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276 | l->data = (void *) link; |
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277 | fe_fgets_stdin=fe_fgets_dummy; |
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278 | _exit(Batch_ReadEval(slCopy(l))); |
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279 | } |
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280 | } |
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281 | else |
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282 | { |
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283 | /* only parent can get here */ |
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284 | return NULL; |
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285 | } |
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286 | } |
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287 | |
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288 | |
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289 | |
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290 | static BOOLEAN slOpenMPTcp(si_link l, short flag) |
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291 | { |
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292 | MP_Link_pt link = NULL; |
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293 | char **argv; |
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294 | int argc; |
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295 | |
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296 | GetCmdArgs(&argc, &argv, l->name); |
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297 | |
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298 | if (mp_Env == NULL) |
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299 | mp_Env = MP_InitializeEnv(MP_AllocateEnv()); |
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300 | |
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301 | if (mp_Env == NULL) |
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302 | { |
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303 | WerrorS("Open: Error in initialization of MP environment"); |
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304 | return TRUE; |
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305 | } |
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306 | |
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307 | if (strcmp(l->mode, "connect") == 0) link = slOpenMPConnect(argc, argv); |
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308 | else if (strcmp(l->mode, "listen") == 0) link = slOpenMPListen(argc, argv); |
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309 | else if (strcmp(l->mode, "launch") == 0) link = slOpenMPLaunch(argc, argv); |
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310 | else |
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311 | { |
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312 | if (strcmp(l->mode, "fork") != 0) |
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313 | { |
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314 | if (l->mode != NULL) omFree(l->mode); |
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315 | l->mode = omStrDup("fork"); |
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316 | } |
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317 | link = slOpenMPFork(l, argc, argv); |
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318 | } |
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319 | |
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320 | FreeCmdArgs(argc, argv); |
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321 | |
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322 | if (link != NULL) |
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323 | { |
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324 | MP_SET_LINK_OPTIONS(link); |
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325 | SI_LINK_SET_RW_OPEN_P(l); |
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326 | l->data = (void *) link; |
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327 | return FALSE; |
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328 | } |
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329 | else return TRUE; |
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330 | } |
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331 | |
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332 | /*************************************************************** |
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333 | * |
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334 | * MP general stuff |
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335 | * |
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336 | ***************************************************************/ |
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337 | |
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338 | static BOOLEAN slWriteMP(si_link l, leftv v) |
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339 | { |
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340 | leftv next = (v != NULL ? v->next : (leftv) NULL); |
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341 | mpsr_ClearError(); |
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342 | |
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343 | // writing is done with one leftv at a time |
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344 | if (v != NULL) v->next = NULL; // hence, we need to set next to NULL |
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345 | if (mpsr_PutMsg((MP_Link_pt) l->data, v) != mpsr_Success) |
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346 | { |
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347 | mpsr_PrintError((MP_Link_pt) l->data); |
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348 | if (v != NULL) v->next = next; |
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349 | return TRUE; |
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350 | } |
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351 | |
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352 | // take care of the remaining leftv's |
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353 | while (next != NULL) |
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354 | { |
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355 | v->next = next; |
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356 | v = next; |
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357 | next = v->next; |
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358 | v->next = NULL; |
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359 | if (mpsr_PutMsg((MP_Link_pt) l->data, v) != mpsr_Success) |
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360 | { |
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361 | mpsr_PrintError((MP_Link_pt) l->data); |
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362 | v->next = next; |
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363 | return TRUE; |
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364 | } |
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365 | } |
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366 | return FALSE; |
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367 | } |
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368 | |
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369 | leftv slReadMP(si_link l) |
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370 | { |
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371 | leftv v = NULL; |
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372 | mpsr_ClearError(); |
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373 | if (mpsr_GetMsg((MP_Link_pt) l->data, v) != mpsr_Success) |
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374 | { |
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375 | mpsr_PrintError((MP_Link_pt) l->data); |
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376 | return NULL; |
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377 | } |
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378 | else |
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379 | return v; |
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380 | } |
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381 | |
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382 | static void SentQuitMsg(si_link l) |
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383 | { |
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384 | leftv v = (leftv) omAlloc0Bin(sleftv_bin); |
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385 | |
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386 | v->rtyp = STRING_CMD; |
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387 | v->data = (void *)MPSR_QUIT_STRING; |
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388 | slWriteMP(l, v); |
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389 | omFreeBin(v, sleftv_bin); |
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390 | } |
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391 | |
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392 | static BOOLEAN slCloseMP(si_link l) |
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393 | { |
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394 | if ((strcmp(l->mode, "launch") == 0 || strcmp(l->mode, "fork") == 0) && |
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395 | (MP_GetLinkStatus((MP_Link_pt)l->data,MP_LinkReadyWriting) == MP_TRUE)) |
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396 | SentQuitMsg(l); |
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397 | MP_CloseLink((MP_Link_pt) l->data); |
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398 | SI_LINK_SET_CLOSE_P(l); |
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399 | return FALSE; |
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400 | } |
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401 | |
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402 | static BOOLEAN slKillMP(si_link l) |
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403 | { |
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404 | MP_KillLink((MP_Link_pt) l->data); |
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405 | SI_LINK_SET_CLOSE_P(l); |
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406 | return FALSE; |
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407 | } |
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408 | |
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409 | static BOOLEAN slDumpMP(si_link l) |
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410 | { |
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411 | mpsr_ClearError(); |
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412 | if (mpsr_PutDump((MP_Link_pt) l->data) != mpsr_Success) |
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413 | { |
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414 | mpsr_PrintError((MP_Link_pt) l->data); |
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415 | return TRUE; |
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416 | } |
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417 | else |
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418 | return FALSE; |
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419 | } |
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420 | |
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421 | static BOOLEAN slGetDumpMP(si_link l) |
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422 | { |
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423 | mpsr_ClearError(); |
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424 | if (mpsr_GetDump((MP_Link_pt) l->data) != mpsr_Success) |
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425 | { |
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426 | mpsr_PrintError((MP_Link_pt) l->data); |
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427 | return TRUE; |
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428 | } |
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429 | else |
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430 | return FALSE; |
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431 | } |
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432 | |
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433 | static char* slStatusMP(si_link l, char* request) |
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434 | { |
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435 | if (strcmp(request, "read") == 0) |
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436 | { |
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437 | if (SI_LINK_R_OPEN_P(l) && |
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438 | (MP_GetLinkStatus((MP_Link_pt)l->data,MP_LinkReadyReading) == MP_TRUE)) |
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439 | return "ready"; |
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440 | else return "not ready"; |
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441 | } |
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442 | else if (strcmp(request, "write") == 0) |
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443 | { |
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444 | if (SI_LINK_W_OPEN_P(l) && |
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445 | (MP_GetLinkStatus((MP_Link_pt)l->data,MP_LinkReadyWriting) == MP_TRUE)) |
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446 | return "ready"; |
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447 | else return "not ready"; |
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448 | } |
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449 | else return "unknown status request"; |
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450 | } |
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451 | |
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452 | /*************************************************************** |
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453 | * |
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454 | * MP batch stuff |
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455 | * |
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456 | ***************************************************************/ |
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457 | |
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458 | int Batch_ReadEval(si_link silink) |
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459 | { |
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460 | leftv v = NULL; |
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461 | // establish top-level identifier for link |
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462 | idhdl id = enterid(omStrDup("mp_ll"), 0, LINK_CMD, &IDROOT, FALSE); |
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463 | IDLINK(id) = silink; |
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464 | |
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465 | // the main read-eval-write loop |
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466 | loop |
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467 | { |
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468 | errorreported = FALSE; |
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469 | v = slRead(silink, v); |
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470 | if (feErrors != NULL && *feErrors != '\0') |
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471 | { |
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472 | if (v != NULL) v->CleanUp(); |
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473 | v = mpsr_InitLeftv(STRING_CMD, (void *) omStrDup(feErrors)); |
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474 | *feErrors = '\0'; |
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475 | } |
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476 | |
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477 | // no need to evaluate -- it is done in the read |
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478 | if (v->Typ() == STRING_CMD && |
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479 | (strcmp((char *)v->Data(), MPSR_QUIT_STRING) == 0)) |
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480 | { |
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481 | slKill(silink); |
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482 | return 0; |
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483 | } |
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484 | |
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485 | slWriteMP(silink, v); |
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486 | |
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487 | if (v != NULL) |
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488 | { |
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489 | v->CleanUp(); |
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490 | omFreeBin(v, sleftv_bin); |
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491 | v = NULL; |
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492 | } |
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493 | } |
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494 | // should never get here |
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495 | return 1; |
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496 | } |
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497 | |
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498 | // #define MPSR_BATCH_DEBUG |
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499 | #ifdef MPSR_BATCH_DEBUG |
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500 | static BOOLEAN stop = 1; |
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501 | #endif |
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502 | |
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503 | |
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504 | int Batch_do(const char* port, const char* host) |
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505 | { |
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506 | #ifdef MPSR_BATCH_DEBUG |
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507 | fprintf(stderr, "Was started with pid %d\n", getpid()); |
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508 | while (stop){}; |
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509 | #endif |
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510 | si_link silink = (si_link) omAlloc0Bin(sip_link_bin); |
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511 | char *istr; |
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512 | |
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513 | // parse argv to get port and host |
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514 | if (port == NULL) |
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515 | { |
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516 | fprintf(stderr, |
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517 | "Need '--MPport portnumber' command line argument in batch modus\n"); |
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518 | return 1; |
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519 | } |
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520 | if (host == NULL) |
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521 | { |
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522 | fprintf(stderr, |
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523 | "Need '--MPhost hostname' command line argument in batch modus\n"); |
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524 | return 1; |
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525 | } |
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526 | |
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527 | // initialize si_link |
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528 | istr = (char *) omAlloc((strlen(port) + strlen(host) + 40)*sizeof(char)); |
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529 | sprintf(istr, "MPtcp:connect --MPport %s --MPhost %s", port, host); |
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530 | slInit(silink, istr); |
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531 | omFree(istr); |
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532 | // open link |
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533 | if (slOpen(silink, SI_LINK_OPEN)) |
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534 | { |
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535 | fprintf(stderr, "Batch side could not connect on port %s and host %s\n", |
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536 | port, host); |
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537 | return 1; |
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538 | } |
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539 | |
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540 | return Batch_ReadEval(silink); |
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541 | } |
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542 | |
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543 | /*************************************************************** |
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544 | * |
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545 | * MP link Extension inits |
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546 | * |
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547 | ***************************************************************/ |
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548 | |
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549 | void slInitMPFileExtension(si_link_extension s) |
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550 | { |
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551 | s->Open=slOpenMPFile; |
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552 | s->Close=slCloseMP; |
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553 | s->Close=slKillMP; |
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554 | s->Read=slReadMP; |
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555 | //s->Read2=NULL; |
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556 | s->Dump=slDumpMP; |
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557 | s->GetDump=slGetDumpMP; |
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558 | s->Write=slWriteMP; |
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559 | s->Status=slStatusMP; |
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560 | s->type="MPfile"; |
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561 | } |
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562 | |
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563 | void slInitMPTcpExtension(si_link_extension s) |
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564 | { |
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565 | s->Open=slOpenMPTcp; |
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566 | s->Close=slCloseMP; |
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567 | s->Kill=slKillMP; |
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568 | s->Read=slReadMP; |
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569 | //s->Read2=NULL; |
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570 | s->Dump=slDumpMP; |
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571 | s->GetDump=slGetDumpMP; |
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572 | s->Write=slWriteMP; |
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573 | s->Status=slStatusMP; |
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574 | s->type="MPtcp"; |
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575 | } |
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576 | #endif |
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