1985
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1 /*
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25
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26 #include "java.h"
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27 #include <dirent.h>
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28 #include <dlfcn.h>
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29 #include <fcntl.h>
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30 #include <inttypes.h>
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31 #include <stdio.h>
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32 #include <string.h>
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33 #include <stdlib.h>
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34 #include <limits.h>
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35 #include <sys/stat.h>
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36 #include <unistd.h>
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37 #include <sys/types.h>
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38
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39 #ifndef GAMMA
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40 #include "manifest_info.h"
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41 #include "version_comp.h"
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42 #endif
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43
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44 #ifdef __linux__
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45 #include <pthread.h>
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46 #else
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47 #include <thread.h>
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48 #endif
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49
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50 #define JVM_DLL "libjvm.so"
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51 #define JAVA_DLL "libjava.so"
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52
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53 #ifndef GAMMA /* launcher.make defines ARCH */
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54 /*
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55 * If a processor / os combination has the ability to run binaries of
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56 * two data models and cohabitation of jre/jdk bits with both data
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57 * models is supported, then DUAL_MODE is defined. When DUAL_MODE is
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58 * defined, the architecture names for the narrow and wide version of
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59 * the architecture are defined in LIBARCH64NAME and LIBARCH32NAME. Currently
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60 * only Solaris on sparc/sparcv9 and i586/amd64 is DUAL_MODE; linux
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61 * i586/amd64 could be defined as DUAL_MODE but that is not the
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62 * current policy.
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63 */
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64
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65 #ifndef LIBARCHNAME
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66 # error "The macro LIBARCHNAME was not defined on the compile line"
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67 #endif
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68
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69 #ifdef __sun
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70 # define DUAL_MODE
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71 # ifndef LIBARCH32NAME
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72 # error "The macro LIBARCH32NAME was not defined on the compile line"
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73 # endif
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74 # ifndef LIBARCH64NAME
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75 # error "The macro LIBARCH64NAME was not defined on the compile line"
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76 # endif
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77 # include <sys/systeminfo.h>
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78 # include <sys/elf.h>
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79 # include <stdio.h>
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80 #endif
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81
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82 #endif /* ifndef GAMMA */
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83
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84 /* pointer to environment */
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85 extern char **environ;
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86
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87 #ifndef GAMMA
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88 /*
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89 * A collection of useful strings. One should think of these as #define
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90 * entries, but actual strings can be more efficient (with many compilers).
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91 */
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92 #ifdef __linux__
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93 static const char *system_dir = "/usr/java";
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94 static const char *user_dir = "/java";
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95 #else /* Solaris */
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96 static const char *system_dir = "/usr/jdk";
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97 static const char *user_dir = "/jdk";
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98 #endif
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99
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100 #endif /* ifndef GAMMA */
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101
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102 /*
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103 * Flowchart of launcher execs and options processing on unix
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104 *
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105 * The selection of the proper vm shared library to open depends on
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106 * several classes of command line options, including vm "flavor"
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107 * options (-client, -server) and the data model options, -d32 and
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108 * -d64, as well as a version specification which may have come from
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109 * the command line or from the manifest of an executable jar file.
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110 * The vm selection options are not passed to the running
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111 * virtual machine; they must be screened out by the launcher.
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112 *
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113 * The version specification (if any) is processed first by the
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114 * platform independent routine SelectVersion. This may result in
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115 * the exec of the specified launcher version.
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116 *
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117 * Typically, the launcher execs at least once to ensure a suitable
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118 * LD_LIBRARY_PATH is in effect for the process. The first exec
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119 * screens out all the data model options; leaving the choice of data
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120 * model implicit in the binary selected to run. However, in case no
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121 * exec is done, the data model options are screened out before the vm
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122 * is invoked.
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123 *
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124 * incoming argv ------------------------------
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125 * | |
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126 * \|/ |
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127 * CheckJVMType |
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128 * (removes -client, -server, etc.) |
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129 * \|/
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130 * CreateExecutionEnvironment
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131 * (removes -d32 and -d64,
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132 * determines desired data model,
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133 * sets up LD_LIBRARY_PATH,
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134 * and exec's)
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135 * |
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136 * --------------------------------------------
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137 * |
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138 * \|/
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139 * exec child 1 incoming argv -----------------
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140 * | |
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141 * \|/ |
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142 * CheckJVMType |
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143 * (removes -client, -server, etc.) |
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144 * | \|/
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145 * | CreateExecutionEnvironment
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146 * | (verifies desired data model
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147 * | is running and acceptable
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148 * | LD_LIBRARY_PATH;
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149 * | no-op in child)
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150 * |
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151 * \|/
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152 * TranslateDashJArgs...
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153 * (Prepare to pass args to vm)
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154 * |
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155 * |
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156 * |
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157 * \|/
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158 * ParseArguments
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159 * (ignores -d32 and -d64,
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160 * processes version options,
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161 * creates argument list for vm,
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162 * etc.)
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163 *
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164 */
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165
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166 static char *SetExecname(char **argv);
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167 static char * GetExecname();
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168 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype,
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169 char *jvmpath, jint jvmpathsize, char * arch);
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170 static jboolean GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative);
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171
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172 #ifndef GAMMA
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173 const char *
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174 GetArch()
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175 {
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176 return LIBARCHNAME;
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177 }
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178 #endif /* ifndef GAMMA */
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179
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180 void
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181 CreateExecutionEnvironment(int *_argcp,
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182 char ***_argvp,
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183 char jrepath[],
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184 jint so_jrepath,
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185 char jvmpath[],
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186 jint so_jvmpath,
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187 char **original_argv) {
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188 /*
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189 * First, determine if we are running the desired data model. If we
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190 * are running the desired data model, all the error messages
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191 * associated with calling GetJREPath, ReadKnownVMs, etc. should be
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192 * output. However, if we are not running the desired data model,
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193 * some of the errors should be suppressed since it is more
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194 * informative to issue an error message based on whether or not the
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195 * os/processor combination has dual mode capabilities.
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196 */
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197
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198 char *execname = NULL;
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199 int original_argc = *_argcp;
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200 jboolean jvmpathExists;
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201
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202 /* Compute the name of the executable */
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203 execname = SetExecname(*_argvp);
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204
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205 #ifndef GAMMA
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206 /* Set the LD_LIBRARY_PATH environment variable, check data model
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207 flags, and exec process, if needed */
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208 {
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209 char *arch = (char *)GetArch(); /* like sparc or sparcv9 */
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210 char * jvmtype = NULL;
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211 int argc = *_argcp;
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212 char **argv = original_argv;
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213
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214 char *runpath = NULL; /* existing effective LD_LIBRARY_PATH
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215 setting */
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216
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217 int running = /* What data model is being ILP32 =>
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218 32 bit vm; LP64 => 64 bit vm */
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219 #ifdef _LP64
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220 64;
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221 #else
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222 32;
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223 #endif
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224
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225 int wanted = running; /* What data mode is being
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226 asked for? Current model is
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227 fine unless another model
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228 is asked for */
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229
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230 char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */
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231 char* newpath = NULL; /* path on new LD_LIBRARY_PATH */
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232 char* lastslash = NULL;
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233
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234 char** newenvp = NULL; /* current environment */
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235
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236 char** newargv = NULL;
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237 int newargc = 0;
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238 #ifdef __sun
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239 char* dmpath = NULL; /* data model specific LD_LIBRARY_PATH,
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240 Solaris only */
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241 #endif
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242
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243 /*
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244 * Starting in 1.5, all unix platforms accept the -d32 and -d64
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245 * options. On platforms where only one data-model is supported
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246 * (e.g. ia-64 Linux), using the flag for the other data model is
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247 * an error and will terminate the program.
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248 */
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249
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250 { /* open new scope to declare local variables */
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251 int i;
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252
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253 newargv = (char **)JLI_MemAlloc((argc+1) * sizeof(*newargv));
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254 newargv[newargc++] = argv[0];
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255
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256 /* scan for data model arguments and remove from argument list;
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257 last occurrence determines desired data model */
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258 for (i=1; i < argc; i++) {
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259
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260 if (strcmp(argv[i], "-J-d64") == 0 || strcmp(argv[i], "-d64") == 0) {
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261 wanted = 64;
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262 continue;
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263 }
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264 if (strcmp(argv[i], "-J-d32") == 0 || strcmp(argv[i], "-d32") == 0) {
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265 wanted = 32;
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266 continue;
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267 }
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268 newargv[newargc++] = argv[i];
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269
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270 #ifdef JAVA_ARGS
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271 if (argv[i][0] != '-')
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272 continue;
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273 #else
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274 if (strcmp(argv[i], "-classpath") == 0 || strcmp(argv[i], "-cp") == 0) {
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275 i++;
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276 if (i >= argc) break;
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277 newargv[newargc++] = argv[i];
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278 continue;
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279 }
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280 if (argv[i][0] != '-') { i++; break; }
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281 #endif
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282 }
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283
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284 /* copy rest of args [i .. argc) */
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285 while (i < argc) {
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286 newargv[newargc++] = argv[i++];
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287 }
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288 newargv[newargc] = NULL;
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289
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290 /*
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291 * newargv has all proper arguments here
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292 */
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293
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294 argc = newargc;
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295 argv = newargv;
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296 }
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297
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298 /* If the data model is not changing, it is an error if the
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299 jvmpath does not exist */
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300 if (wanted == running) {
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301 /* Find out where the JRE is that we will be using. */
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302 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) {
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303 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n");
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304 exit(2);
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305 }
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306
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307 /* Find the specified JVM type */
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308 if (ReadKnownVMs(jrepath, arch, JNI_FALSE) < 1) {
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309 fprintf(stderr, "Error: no known VMs. (check for corrupt jvm.cfg file)\n");
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310 exit(1);
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311 }
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312
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313 jvmpath[0] = '\0';
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314 jvmtype = CheckJvmType(_argcp, _argvp, JNI_FALSE);
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315
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316 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, arch )) {
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317 fprintf(stderr, "Error: no `%s' JVM at `%s'.\n", jvmtype, jvmpath);
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318 exit(4);
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319 }
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320 } else { /* do the same speculatively or exit */
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321 #ifdef DUAL_MODE
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322 if (running != wanted) {
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323 /* Find out where the JRE is that we will be using. */
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324 if (!GetJREPath(jrepath, so_jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE)) {
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325 goto EndDataModelSpeculate;
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326 }
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327
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328 /*
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329 * Read in jvm.cfg for target data model and process vm
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330 * selection options.
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331 */
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332 if (ReadKnownVMs(jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE) < 1) {
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333 goto EndDataModelSpeculate;
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334 }
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335 jvmpath[0] = '\0';
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336 jvmtype = CheckJvmType(_argcp, _argvp, JNI_TRUE);
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337 /* exec child can do error checking on the existence of the path */
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338 jvmpathExists = GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath,
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339 ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME));
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340
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341 }
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342 EndDataModelSpeculate: /* give up and let other code report error message */
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343 ;
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344 #else
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345 fprintf(stderr, "Running a %d-bit JVM is not supported on this platform.\n", wanted);
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346 exit(1);
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347 #endif
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348 }
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349
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350 /*
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351 * We will set the LD_LIBRARY_PATH as follows:
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352 *
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353 * o $JVMPATH (directory portion only)
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354 * o $JRE/lib/$LIBARCHNAME
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355 * o $JRE/../lib/$LIBARCHNAME
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356 *
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357 * followed by the user's previous effective LD_LIBRARY_PATH, if
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358 * any.
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359 */
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360
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361 #ifdef __sun
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362 /*
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363 * Starting in Solaris 7, ld.so.1 supports three LD_LIBRARY_PATH
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364 * variables:
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365 *
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366 * 1. LD_LIBRARY_PATH -- used for 32 and 64 bit searches if
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367 * data-model specific variables are not set.
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368 *
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369 * 2. LD_LIBRARY_PATH_64 -- overrides and replaces LD_LIBRARY_PATH
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370 * for 64-bit binaries.
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371 *
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372 * 3. LD_LIBRARY_PATH_32 -- overrides and replaces LD_LIBRARY_PATH
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373 * for 32-bit binaries.
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374 *
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375 * The vm uses LD_LIBRARY_PATH to set the java.library.path system
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376 * property. To shield the vm from the complication of multiple
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377 * LD_LIBRARY_PATH variables, if the appropriate data model
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378 * specific variable is set, we will act as if LD_LIBRARY_PATH had
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379 * the value of the data model specific variant and the data model
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380 * specific variant will be unset. Note that the variable for the
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381 * *wanted* data model must be used (if it is set), not simply the
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382 * current running data model.
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383 */
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384
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385 switch(wanted) {
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386 case 0:
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387 if(running == 32) {
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388 dmpath = getenv("LD_LIBRARY_PATH_32");
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389 wanted = 32;
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390 }
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391 else {
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392 dmpath = getenv("LD_LIBRARY_PATH_64");
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393 wanted = 64;
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394 }
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395 break;
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396
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397 case 32:
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398 dmpath = getenv("LD_LIBRARY_PATH_32");
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399 break;
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400
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401 case 64:
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402 dmpath = getenv("LD_LIBRARY_PATH_64");
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403 break;
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404
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405 default:
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406 fprintf(stderr, "Improper value at line %d.", __LINE__);
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407 exit(1); /* unknown value in wanted */
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408 break;
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409 }
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410
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411 /*
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412 * If dmpath is NULL, the relevant data model specific variable is
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413 * not set and normal LD_LIBRARY_PATH should be used.
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414 */
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415 if( dmpath == NULL) {
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416 runpath = getenv("LD_LIBRARY_PATH");
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417 }
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418 else {
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419 runpath = dmpath;
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420 }
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421 #else
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422 /*
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423 * If not on Solaris, assume only a single LD_LIBRARY_PATH
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424 * variable.
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425 */
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426 runpath = getenv("LD_LIBRARY_PATH");
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427 #endif /* __sun */
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428
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429 #ifdef __linux
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430 /*
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431 * On linux, if a binary is running as sgid or suid, glibc sets
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432 * LD_LIBRARY_PATH to the empty string for security purposes. (In
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433 * contrast, on Solaris the LD_LIBRARY_PATH variable for a
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434 * privileged binary does not lose its settings; but the dynamic
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435 * linker does apply more scrutiny to the path.) The launcher uses
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436 * the value of LD_LIBRARY_PATH to prevent an exec loop.
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437 * Therefore, if we are running sgid or suid, this function's
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438 * setting of LD_LIBRARY_PATH will be ineffective and we should
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439 * return from the function now. Getting the right libraries to
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440 * be found must be handled through other mechanisms.
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441 */
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442 if((getgid() != getegid()) || (getuid() != geteuid()) ) {
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443 return;
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444 }
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445 #endif
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446
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447 /* runpath contains current effective LD_LIBRARY_PATH setting */
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448
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449 jvmpath = JLI_StringDup(jvmpath);
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450 new_runpath = JLI_MemAlloc( ((runpath!=NULL)?strlen(runpath):0) +
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451 2*strlen(jrepath) + 2*strlen(arch) +
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452 strlen(jvmpath) + 52);
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453 newpath = new_runpath + strlen("LD_LIBRARY_PATH=");
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454
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455
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456 /*
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457 * Create desired LD_LIBRARY_PATH value for target data model.
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458 */
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459 {
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460 /* remove the name of the .so from the JVM path */
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461 lastslash = strrchr(jvmpath, '/');
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462 if (lastslash)
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463 *lastslash = '\0';
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464
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465
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466 /* jvmpath, ((running != wanted)?((wanted==64)?"/"LIBARCH64NAME:"/.."):""), */
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467
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468 sprintf(new_runpath, "LD_LIBRARY_PATH="
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469 "%s:"
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470 "%s/lib/%s:"
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471 "%s/../lib/%s",
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472 jvmpath,
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473 #ifdef DUAL_MODE
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474 jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME),
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475 jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME)
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476 #else
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477 jrepath, arch,
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478 jrepath, arch
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479 #endif
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480 );
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481
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482
|
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483 /*
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|
484 * Check to make sure that the prefix of the current path is the
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485 * desired environment variable setting.
|
|
486 */
|
|
487 if (runpath != NULL &&
|
|
488 strncmp(newpath, runpath, strlen(newpath))==0 &&
|
|
489 (runpath[strlen(newpath)] == 0 || runpath[strlen(newpath)] == ':') &&
|
|
490 (running == wanted) /* data model does not have to be changed */
|
|
491 #ifdef __sun
|
|
492 && (dmpath == NULL) /* data model specific variables not set */
|
|
493 #endif
|
|
494 ) {
|
|
495
|
|
496 return;
|
|
497
|
|
498 }
|
|
499 }
|
|
500
|
|
501 /*
|
|
502 * Place the desired environment setting onto the prefix of
|
|
503 * LD_LIBRARY_PATH. Note that this prevents any possible infinite
|
|
504 * loop of execv() because we test for the prefix, above.
|
|
505 */
|
|
506 if (runpath != 0) {
|
|
507 strcat(new_runpath, ":");
|
|
508 strcat(new_runpath, runpath);
|
|
509 }
|
|
510
|
|
511 if( putenv(new_runpath) != 0) {
|
|
512 exit(1); /* problem allocating memory; LD_LIBRARY_PATH not set
|
|
513 properly */
|
|
514 }
|
|
515
|
|
516 /*
|
|
517 * Unix systems document that they look at LD_LIBRARY_PATH only
|
|
518 * once at startup, so we have to re-exec the current executable
|
|
519 * to get the changed environment variable to have an effect.
|
|
520 */
|
|
521
|
|
522 #ifdef __sun
|
|
523 /*
|
|
524 * If dmpath is not NULL, remove the data model specific string
|
|
525 * in the environment for the exec'ed child.
|
|
526 */
|
|
527
|
|
528 if( dmpath != NULL)
|
|
529 (void)UnsetEnv((wanted==32)?"LD_LIBRARY_PATH_32":"LD_LIBRARY_PATH_64");
|
|
530 #endif
|
|
531
|
|
532 newenvp = environ;
|
|
533
|
|
534 {
|
|
535 char *newexec = execname;
|
|
536 #ifdef DUAL_MODE
|
|
537 /*
|
|
538 * If the data model is being changed, the path to the
|
|
539 * executable must be updated accordingly; the executable name
|
|
540 * and directory the executable resides in are separate. In the
|
|
541 * case of 32 => 64, the new bits are assumed to reside in, e.g.
|
|
542 * "olddir/LIBARCH64NAME/execname"; in the case of 64 => 32,
|
|
543 * the bits are assumed to be in "olddir/../execname". For example,
|
|
544 *
|
|
545 * olddir/sparcv9/execname
|
|
546 * olddir/amd64/execname
|
|
547 *
|
|
548 * for Solaris SPARC and Linux amd64, respectively.
|
|
549 */
|
|
550
|
|
551 if (running != wanted) {
|
|
552 char *oldexec = strcpy(JLI_MemAlloc(strlen(execname) + 1), execname);
|
|
553 char *olddir = oldexec;
|
|
554 char *oldbase = strrchr(oldexec, '/');
|
|
555
|
|
556
|
|
557 newexec = JLI_MemAlloc(strlen(execname) + 20);
|
|
558 *oldbase++ = 0;
|
|
559 sprintf(newexec, "%s/%s/%s", olddir,
|
|
560 ((wanted==64) ? LIBARCH64NAME : ".."), oldbase);
|
|
561 argv[0] = newexec;
|
|
562 }
|
|
563 #endif
|
|
564
|
|
565 (void)fflush(stdout);
|
|
566 (void)fflush(stderr);
|
|
567 execve(newexec, argv, newenvp);
|
|
568 perror("execve()");
|
|
569
|
|
570 fprintf(stderr, "Error trying to exec %s.\n", newexec);
|
|
571 fprintf(stderr, "Check if file exists and permissions are set correctly.\n");
|
|
572
|
|
573 #ifdef DUAL_MODE
|
|
574 if (running != wanted) {
|
|
575 fprintf(stderr, "Failed to start a %d-bit JVM process from a %d-bit JVM.\n",
|
|
576 wanted, running);
|
|
577 # ifdef __sun
|
|
578
|
|
579 # ifdef __sparc
|
|
580 fprintf(stderr, "Verify all necessary J2SE components have been installed.\n" );
|
|
581 fprintf(stderr,
|
|
582 "(Solaris SPARC 64-bit components must be installed after 32-bit components.)\n" );
|
|
583 # else
|
|
584 fprintf(stderr, "Either 64-bit processes are not supported by this platform\n");
|
|
585 fprintf(stderr, "or the 64-bit components have not been installed.\n");
|
|
586 # endif
|
|
587 }
|
|
588 # endif
|
|
589 #endif
|
|
590
|
|
591 }
|
|
592
|
|
593 exit(1);
|
|
594 }
|
|
595
|
|
596 #else /* ifndef GAMMA */
|
|
597
|
|
598 /*
|
|
599 * gamma launcher is simpler in that it doesn't handle VM flavors, data
|
|
600 * model, LD_LIBRARY_PATH, etc. Assuming everything is set-up correctly
|
|
601 * all we need to do here is to return correct path names. See also
|
|
602 * GetJVMPath() and GetApplicationHome().
|
|
603 */
|
|
604
|
|
605 { char *arch = (char *) ARCH; /* like sparc or sparcv9 */
|
|
606 char *p;
|
|
607
|
|
608 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) {
|
|
609 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n");
|
|
610 exit(2);
|
|
611 }
|
|
612
|
|
613 if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath, arch )) {
|
|
614 fprintf(stderr, "Error: no JVM at `%s'.\n", jvmpath);
|
|
615 exit(4);
|
|
616 }
|
|
617 }
|
|
618
|
|
619 #endif /* ifndef GAMMA */
|
|
620 }
|
|
621
|
|
622
|
|
623 /*
|
|
624 * On Solaris VM choosing is done by the launcher (java.c).
|
|
625 */
|
|
626 static jboolean
|
|
627 GetJVMPath(const char *jrepath, const char *jvmtype,
|
|
628 char *jvmpath, jint jvmpathsize, char * arch)
|
|
629 {
|
|
630 struct stat s;
|
|
631
|
|
632 #ifndef GAMMA
|
|
633 if (strchr(jvmtype, '/')) {
|
|
634 sprintf(jvmpath, "%s/" JVM_DLL, jvmtype);
|
|
635 } else {
|
|
636 sprintf(jvmpath, "%s/lib/%s/%s/" JVM_DLL, jrepath, arch, jvmtype);
|
|
637 }
|
|
638 #else
|
|
639 /*
|
|
640 * For gamma launcher, JVM is either built-in or in the same directory.
|
|
641 * Either way we return "<exe_path>/libjvm.so" where <exe_path> is the
|
|
642 * directory where gamma launcher is located.
|
|
643 */
|
|
644
|
|
645 char *p;
|
|
646
|
|
647 snprintf(jvmpath, jvmpathsize, "%s", GetExecname());
|
|
648 p = strrchr(jvmpath, '/');
|
|
649 if (p) {
|
|
650 /* replace executable name with libjvm.so */
|
|
651 snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL);
|
|
652 } else {
|
|
653 /* this case shouldn't happen */
|
|
654 snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL);
|
|
655 }
|
|
656 #endif /* ifndef GAMMA */
|
|
657
|
|
658 if (_launcher_debug)
|
|
659 printf("Does `%s' exist ... ", jvmpath);
|
|
660
|
|
661 if (stat(jvmpath, &s) == 0) {
|
|
662 if (_launcher_debug)
|
|
663 printf("yes.\n");
|
|
664 return JNI_TRUE;
|
|
665 } else {
|
|
666 if (_launcher_debug)
|
|
667 printf("no.\n");
|
|
668 return JNI_FALSE;
|
|
669 }
|
|
670 }
|
|
671
|
|
672 /*
|
|
673 * Find path to JRE based on .exe's location or registry settings.
|
|
674 */
|
|
675 static jboolean
|
|
676 GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative)
|
|
677 {
|
|
678 char libjava[MAXPATHLEN];
|
|
679
|
|
680 if (GetApplicationHome(path, pathsize)) {
|
|
681 /* Is JRE co-located with the application? */
|
|
682 sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch);
|
|
683 if (access(libjava, F_OK) == 0) {
|
|
684 goto found;
|
|
685 }
|
|
686
|
|
687 /* Does the app ship a private JRE in <apphome>/jre directory? */
|
|
688 sprintf(libjava, "%s/jre/lib/%s/" JAVA_DLL, path, arch);
|
|
689 if (access(libjava, F_OK) == 0) {
|
|
690 strcat(path, "/jre");
|
|
691 goto found;
|
|
692 }
|
|
693 }
|
|
694
|
|
695 if (!speculative)
|
|
696 fprintf(stderr, "Error: could not find " JAVA_DLL "\n");
|
|
697 return JNI_FALSE;
|
|
698
|
|
699 found:
|
|
700 if (_launcher_debug)
|
|
701 printf("JRE path is %s\n", path);
|
|
702 return JNI_TRUE;
|
|
703 }
|
|
704
|
|
705 jboolean
|
|
706 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
|
|
707 {
|
|
708 #ifdef GAMMA
|
|
709 /* JVM is directly linked with gamma launcher; no dlopen() */
|
|
710 ifn->CreateJavaVM = JNI_CreateJavaVM;
|
|
711 ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs;
|
|
712 return JNI_TRUE;
|
|
713 #else
|
|
714 Dl_info dlinfo;
|
|
715 void *libjvm;
|
|
716
|
|
717 if (_launcher_debug) {
|
|
718 printf("JVM path is %s\n", jvmpath);
|
|
719 }
|
|
720
|
|
721 libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL);
|
|
722 if (libjvm == NULL) {
|
|
723 #if defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */
|
|
724 FILE * fp;
|
|
725 Elf32_Ehdr elf_head;
|
|
726 int count;
|
|
727 int location;
|
|
728
|
|
729 fp = fopen(jvmpath, "r");
|
|
730 if(fp == NULL)
|
|
731 goto error;
|
|
732
|
|
733 /* read in elf header */
|
|
734 count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp);
|
|
735 fclose(fp);
|
|
736 if(count < 1)
|
|
737 goto error;
|
|
738
|
|
739 /*
|
|
740 * Check for running a server vm (compiled with -xarch=v8plus)
|
|
741 * on a stock v8 processor. In this case, the machine type in
|
|
742 * the elf header would not be included the architecture list
|
|
743 * provided by the isalist command, which is turn is gotten from
|
|
744 * sysinfo. This case cannot occur on 64-bit hardware and thus
|
|
745 * does not have to be checked for in binaries with an LP64 data
|
|
746 * model.
|
|
747 */
|
|
748 if(elf_head.e_machine == EM_SPARC32PLUS) {
|
|
749 char buf[257]; /* recommended buffer size from sysinfo man
|
|
750 page */
|
|
751 long length;
|
|
752 char* location;
|
|
753
|
|
754 length = sysinfo(SI_ISALIST, buf, 257);
|
|
755 if(length > 0) {
|
|
756 location = strstr(buf, "sparcv8plus ");
|
|
757 if(location == NULL) {
|
|
758 fprintf(stderr, "SPARC V8 processor detected; Server compiler requires V9 or better.\n");
|
|
759 fprintf(stderr, "Use Client compiler on V8 processors.\n");
|
|
760 fprintf(stderr, "Could not create the Java virtual machine.\n");
|
|
761 return JNI_FALSE;
|
|
762 }
|
|
763 }
|
|
764 }
|
|
765 #endif
|
|
766 fprintf(stderr, "dl failure on line %d", __LINE__);
|
|
767 goto error;
|
|
768 }
|
|
769
|
|
770 ifn->CreateJavaVM = (CreateJavaVM_t)
|
|
771 dlsym(libjvm, "JNI_CreateJavaVM");
|
|
772 if (ifn->CreateJavaVM == NULL)
|
|
773 goto error;
|
|
774
|
|
775 ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t)
|
|
776 dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs");
|
|
777 if (ifn->GetDefaultJavaVMInitArgs == NULL)
|
|
778 goto error;
|
|
779
|
|
780 return JNI_TRUE;
|
|
781
|
|
782 error:
|
|
783 fprintf(stderr, "Error: failed %s, because %s\n", jvmpath, dlerror());
|
|
784 return JNI_FALSE;
|
|
785 #endif /* ifndef GAMMA */
|
|
786 }
|
|
787
|
|
788 /*
|
|
789 * If app is "/foo/bin/javac", or "/foo/bin/sparcv9/javac" then put
|
|
790 * "/foo" into buf.
|
|
791 */
|
|
792 jboolean
|
|
793 GetApplicationHome(char *buf, jint bufsize)
|
|
794 {
|
|
795 #ifdef __linux__
|
|
796 char *execname = GetExecname();
|
|
797 if (execname) {
|
|
798 strncpy(buf, execname, bufsize-1);
|
|
799 buf[bufsize-1] = '\0';
|
|
800 } else {
|
|
801 return JNI_FALSE;
|
|
802 }
|
|
803 #else
|
|
804 Dl_info dlinfo;
|
|
805
|
|
806 dladdr((void *)GetApplicationHome, &dlinfo);
|
|
807 if (realpath(dlinfo.dli_fname, buf) == NULL) {
|
|
808 fprintf(stderr, "Error: realpath(`%s') failed.\n", dlinfo.dli_fname);
|
|
809 return JNI_FALSE;
|
|
810 }
|
|
811 #endif
|
|
812
|
|
813 #ifdef GAMMA
|
|
814 {
|
|
815 /* gamma launcher uses JAVA_HOME or ALT_JAVA_HOME environment variable to find JDK/JRE */
|
|
816 char* java_home_var = getenv("ALT_JAVA_HOME");
|
|
817 if (java_home_var == NULL) {
|
|
818 java_home_var = getenv("JAVA_HOME");
|
|
819 }
|
|
820 if (java_home_var == NULL) {
|
|
821 printf("JAVA_HOME or ALT_JAVA_HOME must point to a valid JDK/JRE to run gamma\n");
|
|
822 return JNI_FALSE;
|
|
823 }
|
|
824 snprintf(buf, bufsize, "%s", java_home_var);
|
|
825 }
|
|
826 #else
|
|
827 if (strrchr(buf, '/') == 0) {
|
|
828 buf[0] = '\0';
|
|
829 return JNI_FALSE;
|
|
830 }
|
|
831 *(strrchr(buf, '/')) = '\0'; /* executable file */
|
|
832 if (strlen(buf) < 4 || strrchr(buf, '/') == 0) {
|
|
833 buf[0] = '\0';
|
|
834 return JNI_FALSE;
|
|
835 }
|
|
836 if (strcmp("/bin", buf + strlen(buf) - 4) != 0)
|
|
837 *(strrchr(buf, '/')) = '\0'; /* sparcv9 or amd64 */
|
|
838 if (strlen(buf) < 4 || strcmp("/bin", buf + strlen(buf) - 4) != 0) {
|
|
839 buf[0] = '\0';
|
|
840 return JNI_FALSE;
|
|
841 }
|
|
842 *(strrchr(buf, '/')) = '\0'; /* bin */
|
|
843 #endif /* ifndef GAMMA */
|
|
844
|
|
845 return JNI_TRUE;
|
|
846 }
|
|
847
|
|
848
|
|
849 /*
|
|
850 * Return true if the named program exists
|
|
851 */
|
|
852 static int
|
|
853 ProgramExists(char *name)
|
|
854 {
|
|
855 struct stat sb;
|
|
856 if (stat(name, &sb) != 0) return 0;
|
|
857 if (S_ISDIR(sb.st_mode)) return 0;
|
|
858 return (sb.st_mode & S_IEXEC) != 0;
|
|
859 }
|
|
860
|
|
861
|
|
862 /*
|
|
863 * Find a command in a directory, returning the path.
|
|
864 */
|
|
865 static char *
|
|
866 Resolve(char *indir, char *cmd)
|
|
867 {
|
|
868 char name[PATH_MAX + 2], *real;
|
|
869
|
|
870 if ((strlen(indir) + strlen(cmd) + 1) > PATH_MAX) return 0;
|
|
871 sprintf(name, "%s%c%s", indir, FILE_SEPARATOR, cmd);
|
|
872 if (!ProgramExists(name)) return 0;
|
|
873 real = JLI_MemAlloc(PATH_MAX + 2);
|
|
874 if (!realpath(name, real))
|
|
875 strcpy(real, name);
|
|
876 return real;
|
|
877 }
|
|
878
|
|
879
|
|
880 /*
|
|
881 * Find a path for the executable
|
|
882 */
|
|
883 static char *
|
|
884 FindExecName(char *program)
|
|
885 {
|
|
886 char cwdbuf[PATH_MAX+2];
|
|
887 char *path;
|
|
888 char *tmp_path;
|
|
889 char *f;
|
|
890 char *result = NULL;
|
|
891
|
|
892 /* absolute path? */
|
|
893 if (*program == FILE_SEPARATOR ||
|
|
894 (FILE_SEPARATOR=='\\' && strrchr(program, ':')))
|
|
895 return Resolve("", program+1);
|
|
896
|
|
897 /* relative path? */
|
|
898 if (strrchr(program, FILE_SEPARATOR) != 0) {
|
|
899 char buf[PATH_MAX+2];
|
|
900 return Resolve(getcwd(cwdbuf, sizeof(cwdbuf)), program);
|
|
901 }
|
|
902
|
|
903 /* from search path? */
|
|
904 path = getenv("PATH");
|
|
905 if (!path || !*path) path = ".";
|
|
906 tmp_path = JLI_MemAlloc(strlen(path) + 2);
|
|
907 strcpy(tmp_path, path);
|
|
908
|
|
909 for (f=tmp_path; *f && result==0; ) {
|
|
910 char *s = f;
|
|
911 while (*f && (*f != PATH_SEPARATOR)) ++f;
|
|
912 if (*f) *f++ = 0;
|
|
913 if (*s == FILE_SEPARATOR)
|
|
914 result = Resolve(s, program);
|
|
915 else {
|
|
916 /* relative path element */
|
|
917 char dir[2*PATH_MAX];
|
|
918 sprintf(dir, "%s%c%s", getcwd(cwdbuf, sizeof(cwdbuf)),
|
|
919 FILE_SEPARATOR, s);
|
|
920 result = Resolve(dir, program);
|
|
921 }
|
|
922 if (result != 0) break;
|
|
923 }
|
|
924
|
|
925 JLI_MemFree(tmp_path);
|
|
926 return result;
|
|
927 }
|
|
928
|
|
929
|
|
930 /* Store the name of the executable once computed */
|
|
931 static char *execname = NULL;
|
|
932
|
|
933 /*
|
|
934 * Compute the name of the executable
|
|
935 *
|
|
936 * In order to re-exec securely we need the absolute path of the
|
|
937 * executable. On Solaris getexecname(3c) may not return an absolute
|
|
938 * path so we use dladdr to get the filename of the executable and
|
|
939 * then use realpath to derive an absolute path. From Solaris 9
|
|
940 * onwards the filename returned in DL_info structure from dladdr is
|
|
941 * an absolute pathname so technically realpath isn't required.
|
|
942 * On Linux we read the executable name from /proc/self/exe.
|
|
943 * As a fallback, and for platforms other than Solaris and Linux,
|
|
944 * we use FindExecName to compute the executable name.
|
|
945 */
|
|
946 static char *
|
|
947 SetExecname(char **argv)
|
|
948 {
|
|
949 char* exec_path = NULL;
|
|
950
|
|
951 if (execname != NULL) /* Already determined */
|
|
952 return (execname);
|
|
953
|
|
954 #if defined(__sun)
|
|
955 {
|
|
956 Dl_info dlinfo;
|
|
957 if (dladdr((void*)&SetExecname, &dlinfo)) {
|
|
958 char *resolved = (char*)JLI_MemAlloc(PATH_MAX+1);
|
|
959 if (resolved != NULL) {
|
|
960 exec_path = realpath(dlinfo.dli_fname, resolved);
|
|
961 if (exec_path == NULL) {
|
|
962 JLI_MemFree(resolved);
|
|
963 }
|
|
964 }
|
|
965 }
|
|
966 }
|
|
967 #elif defined(__linux__)
|
|
968 {
|
|
969 const char* self = "/proc/self/exe";
|
|
970 char buf[PATH_MAX+1];
|
|
971 int len = readlink(self, buf, PATH_MAX);
|
|
972 if (len >= 0) {
|
|
973 buf[len] = '\0'; /* readlink doesn't nul terminate */
|
|
974 exec_path = JLI_StringDup(buf);
|
|
975 }
|
|
976 }
|
|
977 #else /* !__sun && !__linux */
|
|
978 {
|
|
979 /* Not implemented */
|
|
980 }
|
|
981 #endif
|
|
982
|
|
983 if (exec_path == NULL) {
|
|
984 exec_path = FindExecName(argv[0]);
|
|
985 }
|
|
986 execname = exec_path;
|
|
987 return exec_path;
|
|
988 }
|
|
989
|
|
990 /*
|
|
991 * Return the name of the executable. Used in java_md.c to find the JRE area.
|
|
992 */
|
|
993 static char *
|
|
994 GetExecname() {
|
|
995 return execname;
|
|
996 }
|
|
997
|
|
998 void ReportErrorMessage(char * message, jboolean always) {
|
|
999 if (always) {
|
|
1000 fprintf(stderr, "%s\n", message);
|
|
1001 }
|
|
1002 }
|
|
1003
|
|
1004 void ReportErrorMessage2(char * format, char * string, jboolean always) {
|
|
1005 if (always) {
|
|
1006 fprintf(stderr, format, string);
|
|
1007 fprintf(stderr, "\n");
|
|
1008 }
|
|
1009 }
|
|
1010
|
|
1011 void ReportExceptionDescription(JNIEnv * env) {
|
|
1012 (*env)->ExceptionDescribe(env);
|
|
1013 }
|
|
1014
|
|
1015 /*
|
|
1016 * Return JNI_TRUE for an option string that has no effect but should
|
|
1017 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
|
|
1018 * Solaris SPARC, this screening needs to be done if:
|
|
1019 * 1) LD_LIBRARY_PATH does _not_ need to be reset and
|
|
1020 * 2) -d32 or -d64 is passed to a binary with a matching data model
|
|
1021 * (the exec in SetLibraryPath removes -d<n> options and points the
|
|
1022 * exec to the proper binary). When this exec is not done, these options
|
|
1023 * would end up getting passed onto the vm.
|
|
1024 */
|
|
1025 jboolean RemovableMachineDependentOption(char * option) {
|
|
1026 /*
|
|
1027 * Unconditionally remove both -d32 and -d64 options since only
|
|
1028 * the last such options has an effect; e.g.
|
|
1029 * java -d32 -d64 -d32 -version
|
|
1030 * is equivalent to
|
|
1031 * java -d32 -version
|
|
1032 */
|
|
1033
|
|
1034 if( (strcmp(option, "-d32") == 0 ) ||
|
|
1035 (strcmp(option, "-d64") == 0 ))
|
|
1036 return JNI_TRUE;
|
|
1037 else
|
|
1038 return JNI_FALSE;
|
|
1039 }
|
|
1040
|
|
1041 void PrintMachineDependentOptions() {
|
|
1042 fprintf(stdout,
|
|
1043 " -d32 use a 32-bit data model if available\n"
|
|
1044 "\n"
|
|
1045 " -d64 use a 64-bit data model if available\n");
|
|
1046 return;
|
|
1047 }
|
|
1048
|
|
1049 #ifndef GAMMA
|
|
1050 /*
|
|
1051 * The following methods (down to ServerClassMachine()) answer
|
|
1052 * the question about whether a machine is a "server-class"
|
|
1053 * machine. A server-class machine is loosely defined as one
|
|
1054 * with 2 or more processors and 2 gigabytes or more physical
|
|
1055 * memory. The definition of a processor is a physical package,
|
|
1056 * not a hyperthreaded chip masquerading as a multi-processor.
|
|
1057 * The definition of memory is also somewhat fuzzy, since x86
|
|
1058 * machines seem not to report all the memory in their DIMMs, we
|
|
1059 * think because of memory mapping of graphics cards, etc.
|
|
1060 *
|
|
1061 * This code is somewhat more confused with #ifdef's than we'd
|
|
1062 * like because this file is used by both Solaris and Linux
|
|
1063 * platforms, and so needs to be parameterized for SPARC and
|
|
1064 * i586 hardware. The other Linux platforms (amd64 and ia64)
|
|
1065 * don't even ask this question, because they only come with
|
|
1066 * server JVMs. */
|
|
1067
|
|
1068 # define KB (1024UL)
|
|
1069 # define MB (1024UL * KB)
|
|
1070 # define GB (1024UL * MB)
|
|
1071
|
|
1072 /* Compute physical memory by asking the OS */
|
|
1073 uint64_t
|
|
1074 physical_memory(void) {
|
|
1075 const uint64_t pages = (uint64_t) sysconf(_SC_PHYS_PAGES);
|
|
1076 const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE);
|
|
1077 const uint64_t result = pages * page_size;
|
|
1078 # define UINT64_FORMAT "%" PRIu64
|
|
1079
|
|
1080 if (_launcher_debug) {
|
|
1081 printf("pages: " UINT64_FORMAT
|
|
1082 " page_size: " UINT64_FORMAT
|
|
1083 " physical memory: " UINT64_FORMAT " (%.3fGB)\n",
|
|
1084 pages, page_size, result, result / (double) GB);
|
|
1085 }
|
|
1086 return result;
|
|
1087 }
|
|
1088
|
|
1089 #if defined(__sun) && defined(__sparc)
|
|
1090
|
|
1091 /* Methods for solaris-sparc: these are easy. */
|
|
1092
|
|
1093 /* Ask the OS how many processors there are. */
|
|
1094 unsigned long
|
|
1095 physical_processors(void) {
|
|
1096 const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
|
|
1097
|
|
1098 if (_launcher_debug) {
|
|
1099 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
|
|
1100 }
|
|
1101 return sys_processors;
|
|
1102 }
|
|
1103
|
|
1104 /* The solaris-sparc version of the "server-class" predicate. */
|
|
1105 jboolean
|
|
1106 solaris_sparc_ServerClassMachine(void) {
|
|
1107 jboolean result = JNI_FALSE;
|
|
1108 /* How big is a server class machine? */
|
|
1109 const unsigned long server_processors = 2UL;
|
|
1110 const uint64_t server_memory = 2UL * GB;
|
|
1111 const uint64_t actual_memory = physical_memory();
|
|
1112
|
|
1113 /* Is this a server class machine? */
|
|
1114 if (actual_memory >= server_memory) {
|
|
1115 const unsigned long actual_processors = physical_processors();
|
|
1116 if (actual_processors >= server_processors) {
|
|
1117 result = JNI_TRUE;
|
|
1118 }
|
|
1119 }
|
|
1120 if (_launcher_debug) {
|
|
1121 printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n",
|
|
1122 (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
|
|
1123 }
|
|
1124 return result;
|
|
1125 }
|
|
1126
|
|
1127 #endif /* __sun && __sparc */
|
|
1128
|
|
1129 #if defined(__sun) && defined(i586)
|
|
1130
|
|
1131 /*
|
|
1132 * A utility method for asking the CPU about itself.
|
|
1133 * There's a corresponding version of linux-i586
|
|
1134 * because the compilers are different.
|
|
1135 */
|
|
1136 void
|
|
1137 get_cpuid(uint32_t arg,
|
|
1138 uint32_t* eaxp,
|
|
1139 uint32_t* ebxp,
|
|
1140 uint32_t* ecxp,
|
|
1141 uint32_t* edxp) {
|
|
1142 #ifdef _LP64
|
|
1143 asm(
|
|
1144 /* rbx is a callee-saved register */
|
|
1145 " movq %rbx, %r11 \n"
|
|
1146 /* rdx and rcx are 3rd and 4th argument registers */
|
|
1147 " movq %rdx, %r10 \n"
|
|
1148 " movq %rcx, %r9 \n"
|
|
1149 " movl %edi, %eax \n"
|
|
1150 " cpuid \n"
|
|
1151 " movl %eax, (%rsi)\n"
|
|
1152 " movl %ebx, (%r10)\n"
|
|
1153 " movl %ecx, (%r9) \n"
|
|
1154 " movl %edx, (%r8) \n"
|
|
1155 /* Restore rbx */
|
|
1156 " movq %r11, %rbx");
|
|
1157 #else
|
|
1158 /* EBX is a callee-saved register */
|
|
1159 asm(" pushl %ebx");
|
|
1160 /* Need ESI for storing through arguments */
|
|
1161 asm(" pushl %esi");
|
|
1162 asm(" movl 8(%ebp), %eax \n"
|
|
1163 " cpuid \n"
|
|
1164 " movl 12(%ebp), %esi \n"
|
|
1165 " movl %eax, (%esi) \n"
|
|
1166 " movl 16(%ebp), %esi \n"
|
|
1167 " movl %ebx, (%esi) \n"
|
|
1168 " movl 20(%ebp), %esi \n"
|
|
1169 " movl %ecx, (%esi) \n"
|
|
1170 " movl 24(%ebp), %esi \n"
|
|
1171 " movl %edx, (%esi) ");
|
|
1172 /* Restore ESI and EBX */
|
|
1173 asm(" popl %esi");
|
|
1174 /* Restore EBX */
|
|
1175 asm(" popl %ebx");
|
|
1176 #endif
|
|
1177 }
|
|
1178
|
|
1179 #endif /* __sun && i586 */
|
|
1180
|
|
1181 #if defined(__linux__) && defined(i586)
|
|
1182
|
|
1183 /*
|
|
1184 * A utility method for asking the CPU about itself.
|
|
1185 * There's a corresponding version of solaris-i586
|
|
1186 * because the compilers are different.
|
|
1187 */
|
|
1188 void
|
|
1189 get_cpuid(uint32_t arg,
|
|
1190 uint32_t* eaxp,
|
|
1191 uint32_t* ebxp,
|
|
1192 uint32_t* ecxp,
|
|
1193 uint32_t* edxp) {
|
|
1194 #ifdef _LP64
|
|
1195 __asm__ volatile (/* Instructions */
|
|
1196 " movl %4, %%eax \n"
|
|
1197 " cpuid \n"
|
|
1198 " movl %%eax, (%0)\n"
|
|
1199 " movl %%ebx, (%1)\n"
|
|
1200 " movl %%ecx, (%2)\n"
|
|
1201 " movl %%edx, (%3)\n"
|
|
1202 : /* Outputs */
|
|
1203 : /* Inputs */
|
|
1204 "r" (eaxp),
|
|
1205 "r" (ebxp),
|
|
1206 "r" (ecxp),
|
|
1207 "r" (edxp),
|
|
1208 "r" (arg)
|
|
1209 : /* Clobbers */
|
|
1210 "%rax", "%rbx", "%rcx", "%rdx", "memory"
|
|
1211 );
|
|
1212 #else
|
|
1213 uint32_t value_of_eax = 0;
|
|
1214 uint32_t value_of_ebx = 0;
|
|
1215 uint32_t value_of_ecx = 0;
|
|
1216 uint32_t value_of_edx = 0;
|
|
1217 __asm__ volatile (/* Instructions */
|
|
1218 /* ebx is callee-save, so push it */
|
|
1219 " pushl %%ebx \n"
|
|
1220 " movl %4, %%eax \n"
|
|
1221 " cpuid \n"
|
|
1222 " movl %%eax, %0 \n"
|
|
1223 " movl %%ebx, %1 \n"
|
|
1224 " movl %%ecx, %2 \n"
|
|
1225 " movl %%edx, %3 \n"
|
|
1226 /* restore ebx */
|
|
1227 " popl %%ebx \n"
|
|
1228
|
|
1229 : /* Outputs */
|
|
1230 "=m" (value_of_eax),
|
|
1231 "=m" (value_of_ebx),
|
|
1232 "=m" (value_of_ecx),
|
|
1233 "=m" (value_of_edx)
|
|
1234 : /* Inputs */
|
|
1235 "m" (arg)
|
|
1236 : /* Clobbers */
|
|
1237 "%eax", "%ecx", "%edx"
|
|
1238 );
|
|
1239 *eaxp = value_of_eax;
|
|
1240 *ebxp = value_of_ebx;
|
|
1241 *ecxp = value_of_ecx;
|
|
1242 *edxp = value_of_edx;
|
|
1243 #endif
|
|
1244 }
|
|
1245
|
|
1246 #endif /* __linux__ && i586 */
|
|
1247
|
|
1248 #ifdef i586
|
|
1249 /*
|
|
1250 * Routines shared by solaris-i586 and linux-i586.
|
|
1251 */
|
|
1252
|
|
1253 enum HyperThreadingSupport_enum {
|
|
1254 hts_supported = 1,
|
|
1255 hts_too_soon_to_tell = 0,
|
|
1256 hts_not_supported = -1,
|
|
1257 hts_not_pentium4 = -2,
|
|
1258 hts_not_intel = -3
|
|
1259 };
|
|
1260 typedef enum HyperThreadingSupport_enum HyperThreadingSupport;
|
|
1261
|
|
1262 /* Determine if hyperthreading is supported */
|
|
1263 HyperThreadingSupport
|
|
1264 hyperthreading_support(void) {
|
|
1265 HyperThreadingSupport result = hts_too_soon_to_tell;
|
|
1266 /* Bits 11 through 8 is family processor id */
|
|
1267 # define FAMILY_ID_SHIFT 8
|
|
1268 # define FAMILY_ID_MASK 0xf
|
|
1269 /* Bits 23 through 20 is extended family processor id */
|
|
1270 # define EXT_FAMILY_ID_SHIFT 20
|
|
1271 # define EXT_FAMILY_ID_MASK 0xf
|
|
1272 /* Pentium 4 family processor id */
|
|
1273 # define PENTIUM4_FAMILY_ID 0xf
|
|
1274 /* Bit 28 indicates Hyper-Threading Technology support */
|
|
1275 # define HT_BIT_SHIFT 28
|
|
1276 # define HT_BIT_MASK 1
|
|
1277 uint32_t vendor_id[3] = { 0U, 0U, 0U };
|
|
1278 uint32_t value_of_eax = 0U;
|
|
1279 uint32_t value_of_edx = 0U;
|
|
1280 uint32_t dummy = 0U;
|
|
1281
|
|
1282 /* Yes, this is supposed to be [0], [2], [1] */
|
|
1283 get_cpuid(0, &dummy, &vendor_id[0], &vendor_id[2], &vendor_id[1]);
|
|
1284 if (_launcher_debug) {
|
|
1285 printf("vendor: %c %c %c %c %c %c %c %c %c %c %c %c \n",
|
|
1286 ((vendor_id[0] >> 0) & 0xff),
|
|
1287 ((vendor_id[0] >> 8) & 0xff),
|
|
1288 ((vendor_id[0] >> 16) & 0xff),
|
|
1289 ((vendor_id[0] >> 24) & 0xff),
|
|
1290 ((vendor_id[1] >> 0) & 0xff),
|
|
1291 ((vendor_id[1] >> 8) & 0xff),
|
|
1292 ((vendor_id[1] >> 16) & 0xff),
|
|
1293 ((vendor_id[1] >> 24) & 0xff),
|
|
1294 ((vendor_id[2] >> 0) & 0xff),
|
|
1295 ((vendor_id[2] >> 8) & 0xff),
|
|
1296 ((vendor_id[2] >> 16) & 0xff),
|
|
1297 ((vendor_id[2] >> 24) & 0xff));
|
|
1298 }
|
|
1299 get_cpuid(1, &value_of_eax, &dummy, &dummy, &value_of_edx);
|
|
1300 if (_launcher_debug) {
|
|
1301 printf("value_of_eax: 0x%x value_of_edx: 0x%x\n",
|
|
1302 value_of_eax, value_of_edx);
|
|
1303 }
|
|
1304 if ((((value_of_eax >> FAMILY_ID_SHIFT) & FAMILY_ID_MASK) == PENTIUM4_FAMILY_ID) ||
|
|
1305 (((value_of_eax >> EXT_FAMILY_ID_SHIFT) & EXT_FAMILY_ID_MASK) != 0)) {
|
|
1306 if ((((vendor_id[0] >> 0) & 0xff) == 'G') &&
|
|
1307 (((vendor_id[0] >> 8) & 0xff) == 'e') &&
|
|
1308 (((vendor_id[0] >> 16) & 0xff) == 'n') &&
|
|
1309 (((vendor_id[0] >> 24) & 0xff) == 'u') &&
|
|
1310 (((vendor_id[1] >> 0) & 0xff) == 'i') &&
|
|
1311 (((vendor_id[1] >> 8) & 0xff) == 'n') &&
|
|
1312 (((vendor_id[1] >> 16) & 0xff) == 'e') &&
|
|
1313 (((vendor_id[1] >> 24) & 0xff) == 'I') &&
|
|
1314 (((vendor_id[2] >> 0) & 0xff) == 'n') &&
|
|
1315 (((vendor_id[2] >> 8) & 0xff) == 't') &&
|
|
1316 (((vendor_id[2] >> 16) & 0xff) == 'e') &&
|
|
1317 (((vendor_id[2] >> 24) & 0xff) == 'l')) {
|
|
1318 if (((value_of_edx >> HT_BIT_SHIFT) & HT_BIT_MASK) == HT_BIT_MASK) {
|
|
1319 if (_launcher_debug) {
|
|
1320 printf("Hyperthreading supported\n");
|
|
1321 }
|
|
1322 result = hts_supported;
|
|
1323 } else {
|
|
1324 if (_launcher_debug) {
|
|
1325 printf("Hyperthreading not supported\n");
|
|
1326 }
|
|
1327 result = hts_not_supported;
|
|
1328 }
|
|
1329 } else {
|
|
1330 if (_launcher_debug) {
|
|
1331 printf("Not GenuineIntel\n");
|
|
1332 }
|
|
1333 result = hts_not_intel;
|
|
1334 }
|
|
1335 } else {
|
|
1336 if (_launcher_debug) {
|
|
1337 printf("not Pentium 4 or extended\n");
|
|
1338 }
|
|
1339 result = hts_not_pentium4;
|
|
1340 }
|
|
1341 return result;
|
|
1342 }
|
|
1343
|
|
1344 /* Determine how many logical processors there are per CPU */
|
|
1345 unsigned int
|
|
1346 logical_processors_per_package(void) {
|
|
1347 /*
|
|
1348 * After CPUID with EAX==1, register EBX bits 23 through 16
|
|
1349 * indicate the number of logical processors per package
|
|
1350 */
|
|
1351 # define NUM_LOGICAL_SHIFT 16
|
|
1352 # define NUM_LOGICAL_MASK 0xff
|
|
1353 unsigned int result = 1U;
|
|
1354 const HyperThreadingSupport hyperthreading = hyperthreading_support();
|
|
1355
|
|
1356 if (hyperthreading == hts_supported) {
|
|
1357 uint32_t value_of_ebx = 0U;
|
|
1358 uint32_t dummy = 0U;
|
|
1359
|
|
1360 get_cpuid(1, &dummy, &value_of_ebx, &dummy, &dummy);
|
|
1361 result = (value_of_ebx >> NUM_LOGICAL_SHIFT) & NUM_LOGICAL_MASK;
|
|
1362 if (_launcher_debug) {
|
|
1363 printf("logical processors per package: %u\n", result);
|
|
1364 }
|
|
1365 }
|
|
1366 return result;
|
|
1367 }
|
|
1368
|
|
1369 /* Compute the number of physical processors, not logical processors */
|
|
1370 unsigned long
|
|
1371 physical_processors(void) {
|
|
1372 const long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
|
|
1373 unsigned long result = sys_processors;
|
|
1374
|
|
1375 if (_launcher_debug) {
|
|
1376 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
|
|
1377 }
|
|
1378 if (sys_processors > 1) {
|
|
1379 unsigned int logical_processors = logical_processors_per_package();
|
|
1380 if (logical_processors > 1) {
|
|
1381 result = (unsigned long) sys_processors / logical_processors;
|
|
1382 }
|
|
1383 }
|
|
1384 if (_launcher_debug) {
|
|
1385 printf("physical processors: %lu\n", result);
|
|
1386 }
|
|
1387 return result;
|
|
1388 }
|
|
1389
|
|
1390 #endif /* i586 */
|
|
1391
|
|
1392 #if defined(__sun) && defined(i586)
|
|
1393
|
|
1394 /* The definition of a server-class machine for solaris-i586/amd64 */
|
|
1395 jboolean
|
|
1396 solaris_i586_ServerClassMachine(void) {
|
|
1397 jboolean result = JNI_FALSE;
|
|
1398 /* How big is a server class machine? */
|
|
1399 const unsigned long server_processors = 2UL;
|
|
1400 const uint64_t server_memory = 2UL * GB;
|
|
1401 /*
|
|
1402 * We seem not to get our full complement of memory.
|
|
1403 * We allow some part (1/8?) of the memory to be "missing",
|
|
1404 * based on the sizes of DIMMs, and maybe graphics cards.
|
|
1405 */
|
|
1406 const uint64_t missing_memory = 256UL * MB;
|
|
1407 const uint64_t actual_memory = physical_memory();
|
|
1408
|
|
1409 /* Is this a server class machine? */
|
|
1410 if (actual_memory >= (server_memory - missing_memory)) {
|
|
1411 const unsigned long actual_processors = physical_processors();
|
|
1412 if (actual_processors >= server_processors) {
|
|
1413 result = JNI_TRUE;
|
|
1414 }
|
|
1415 }
|
|
1416 if (_launcher_debug) {
|
|
1417 printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n",
|
|
1418 (result == JNI_TRUE ? "true" : "false"));
|
|
1419 }
|
|
1420 return result;
|
|
1421 }
|
|
1422
|
|
1423 #endif /* __sun && i586 */
|
|
1424
|
|
1425 #if defined(__linux__) && defined(i586)
|
|
1426
|
|
1427 /* The definition of a server-class machine for linux-i586 */
|
|
1428 jboolean
|
|
1429 linux_i586_ServerClassMachine(void) {
|
|
1430 jboolean result = JNI_FALSE;
|
|
1431 /* How big is a server class machine? */
|
|
1432 const unsigned long server_processors = 2UL;
|
|
1433 const uint64_t server_memory = 2UL * GB;
|
|
1434 /*
|
|
1435 * We seem not to get our full complement of memory.
|
|
1436 * We allow some part (1/8?) of the memory to be "missing",
|
|
1437 * based on the sizes of DIMMs, and maybe graphics cards.
|
|
1438 */
|
|
1439 const uint64_t missing_memory = 256UL * MB;
|
|
1440 const uint64_t actual_memory = physical_memory();
|
|
1441
|
|
1442 /* Is this a server class machine? */
|
|
1443 if (actual_memory >= (server_memory - missing_memory)) {
|
|
1444 const unsigned long actual_processors = physical_processors();
|
|
1445 if (actual_processors >= server_processors) {
|
|
1446 result = JNI_TRUE;
|
|
1447 }
|
|
1448 }
|
|
1449 if (_launcher_debug) {
|
|
1450 printf("linux_" LIBARCHNAME "_ServerClassMachine: %s\n",
|
|
1451 (result == JNI_TRUE ? "true" : "false"));
|
|
1452 }
|
|
1453 return result;
|
|
1454 }
|
|
1455
|
|
1456 #endif /* __linux__ && i586 */
|
|
1457
|
|
1458 /* Dispatch to the platform-specific definition of "server-class" */
|
|
1459 jboolean
|
|
1460 ServerClassMachine(void) {
|
|
1461 jboolean result = JNI_FALSE;
|
|
1462 #if defined(NEVER_ACT_AS_SERVER_CLASS_MACHINE)
|
|
1463 result = JNI_FALSE;
|
|
1464 #elif defined(ALWAYS_ACT_AS_SERVER_CLASS_MACHINE)
|
|
1465 result = JNI_TRUE;
|
|
1466 #elif defined(__sun) && defined(__sparc)
|
|
1467 result = solaris_sparc_ServerClassMachine();
|
|
1468 #elif defined(__sun) && defined(i586)
|
|
1469 result = solaris_i586_ServerClassMachine();
|
|
1470 #elif defined(__linux__) && defined(i586)
|
|
1471 result = linux_i586_ServerClassMachine();
|
|
1472 #else
|
|
1473 if (_launcher_debug) {
|
|
1474 printf("ServerClassMachine: returns default value of %s\n",
|
|
1475 (result == JNI_TRUE ? "true" : "false"));
|
|
1476 }
|
|
1477 #endif
|
|
1478 return result;
|
|
1479 }
|
|
1480
|
|
1481 /*
|
|
1482 * Since using the file system as a registry is a bit risky, perform
|
|
1483 * additional sanity checks on the identified directory to validate
|
|
1484 * it as a valid jre/sdk.
|
|
1485 *
|
|
1486 * Return 0 if the tests fail; otherwise return non-zero (true).
|
|
1487 *
|
|
1488 * Note that checking for anything more than the existence of an
|
|
1489 * executable object at bin/java relative to the path being checked
|
|
1490 * will break the regression tests.
|
|
1491 */
|
|
1492 static int
|
|
1493 CheckSanity(char *path, char *dir)
|
|
1494 {
|
|
1495 char buffer[PATH_MAX];
|
|
1496
|
|
1497 if (strlen(path) + strlen(dir) + 11 > PATH_MAX)
|
|
1498 return (0); /* Silently reject "impossibly" long paths */
|
|
1499
|
|
1500 (void)strcat(strcat(strcat(strcpy(buffer, path), "/"), dir), "/bin/java");
|
|
1501 return ((access(buffer, X_OK) == 0) ? 1 : 0);
|
|
1502 }
|
|
1503
|
|
1504 /*
|
|
1505 * Determine if there is an acceptable JRE in the directory dirname.
|
|
1506 * Upon locating the "best" one, return a fully qualified path to
|
|
1507 * it. "Best" is defined as the most advanced JRE meeting the
|
|
1508 * constraints contained in the manifest_info. If no JRE in this
|
|
1509 * directory meets the constraints, return NULL.
|
|
1510 *
|
|
1511 * Note that we don't check for errors in reading the directory
|
|
1512 * (which would be done by checking errno). This is because it
|
|
1513 * doesn't matter if we get an error reading the directory, or
|
|
1514 * we just don't find anything interesting in the directory. We
|
|
1515 * just return NULL in either case.
|
|
1516 *
|
|
1517 * The historical names of j2sdk and j2re were changed to jdk and
|
|
1518 * jre respecively as part of the 1.5 rebranding effort. Since the
|
|
1519 * former names are legacy on Linux, they must be recognized for
|
|
1520 * all time. Fortunately, this is a minor cost.
|
|
1521 */
|
|
1522 static char
|
|
1523 *ProcessDir(manifest_info *info, char *dirname)
|
|
1524 {
|
|
1525 DIR *dirp;
|
|
1526 struct dirent *dp;
|
|
1527 char *best = NULL;
|
|
1528 int offset;
|
|
1529 int best_offset = 0;
|
|
1530 char *ret_str = NULL;
|
|
1531 char buffer[PATH_MAX];
|
|
1532
|
|
1533 if ((dirp = opendir(dirname)) == NULL)
|
|
1534 return (NULL);
|
|
1535
|
|
1536 do {
|
|
1537 if ((dp = readdir(dirp)) != NULL) {
|
|
1538 offset = 0;
|
|
1539 if ((strncmp(dp->d_name, "jre", 3) == 0) ||
|
|
1540 (strncmp(dp->d_name, "jdk", 3) == 0))
|
|
1541 offset = 3;
|
|
1542 else if (strncmp(dp->d_name, "j2re", 4) == 0)
|
|
1543 offset = 4;
|
|
1544 else if (strncmp(dp->d_name, "j2sdk", 5) == 0)
|
|
1545 offset = 5;
|
|
1546 if (offset > 0) {
|
|
1547 if ((JLI_AcceptableRelease(dp->d_name + offset,
|
|
1548 info->jre_version)) && CheckSanity(dirname, dp->d_name))
|
|
1549 if ((best == NULL) || (JLI_ExactVersionId(
|
|
1550 dp->d_name + offset, best + best_offset) > 0)) {
|
|
1551 if (best != NULL)
|
|
1552 JLI_MemFree(best);
|
|
1553 best = JLI_StringDup(dp->d_name);
|
|
1554 best_offset = offset;
|
|
1555 }
|
|
1556 }
|
|
1557 }
|
|
1558 } while (dp != NULL);
|
|
1559 (void) closedir(dirp);
|
|
1560 if (best == NULL)
|
|
1561 return (NULL);
|
|
1562 else {
|
|
1563 ret_str = JLI_MemAlloc(strlen(dirname) + strlen(best) + 2);
|
|
1564 ret_str = strcat(strcat(strcpy(ret_str, dirname), "/"), best);
|
|
1565 JLI_MemFree(best);
|
|
1566 return (ret_str);
|
|
1567 }
|
|
1568 }
|
|
1569
|
|
1570 /*
|
|
1571 * This is the global entry point. It examines the host for the optimal
|
|
1572 * JRE to be used by scanning a set of directories. The set of directories
|
|
1573 * is platform dependent and can be overridden by the environment
|
|
1574 * variable JAVA_VERSION_PATH.
|
|
1575 *
|
|
1576 * This routine itself simply determines the set of appropriate
|
|
1577 * directories before passing control onto ProcessDir().
|
|
1578 */
|
|
1579 char*
|
|
1580 LocateJRE(manifest_info* info)
|
|
1581 {
|
|
1582 char *path;
|
|
1583 char *home;
|
|
1584 char *target = NULL;
|
|
1585 char *dp;
|
|
1586 char *cp;
|
|
1587
|
|
1588 /*
|
|
1589 * Start by getting JAVA_VERSION_PATH
|
|
1590 */
|
|
1591 if (info->jre_restrict_search)
|
|
1592 path = JLI_StringDup(system_dir);
|
|
1593 else if ((path = getenv("JAVA_VERSION_PATH")) != NULL)
|
|
1594 path = JLI_StringDup(path);
|
|
1595 else
|
|
1596 if ((home = getenv("HOME")) != NULL) {
|
|
1597 path = (char *)JLI_MemAlloc(strlen(home) + strlen(system_dir) +
|
|
1598 strlen(user_dir) + 2);
|
|
1599 path = strcat(strcat(strcat(strcpy(path, home),
|
|
1600 user_dir), ":"), system_dir);
|
|
1601 } else
|
|
1602 path = JLI_StringDup(system_dir);
|
|
1603
|
|
1604 /*
|
|
1605 * Step through each directory on the path. Terminate the scan with
|
|
1606 * the first directory with an acceptable JRE.
|
|
1607 */
|
|
1608 cp = dp = path;
|
|
1609 while (dp != NULL) {
|
|
1610 cp = strchr(dp, (int)':');
|
|
1611 if (cp != NULL)
|
|
1612 *cp = (char)NULL;
|
|
1613 if ((target = ProcessDir(info, dp)) != NULL)
|
|
1614 break;
|
|
1615 dp = cp;
|
|
1616 if (dp != NULL)
|
|
1617 dp++;
|
|
1618 }
|
|
1619 JLI_MemFree(path);
|
|
1620 return (target);
|
|
1621 }
|
|
1622
|
|
1623 /*
|
|
1624 * Given a path to a jre to execute, this routine checks if this process
|
|
1625 * is indeed that jre. If not, it exec's that jre.
|
|
1626 *
|
|
1627 * We want to actually check the paths rather than just the version string
|
|
1628 * built into the executable, so that given version specification (and
|
|
1629 * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless
|
|
1630 * of the version of the arbitrary launcher we start with.
|
|
1631 */
|
|
1632 void
|
|
1633 ExecJRE(char *jre, char **argv)
|
|
1634 {
|
|
1635 char wanted[PATH_MAX];
|
|
1636 char *execname;
|
|
1637 char *progname;
|
|
1638
|
|
1639 /*
|
|
1640 * Resolve the real path to the directory containing the selected JRE.
|
|
1641 */
|
|
1642 if (realpath(jre, wanted) == NULL) {
|
|
1643 fprintf(stderr, "Unable to resolve %s\n", jre);
|
|
1644 exit(1);
|
|
1645 }
|
|
1646
|
|
1647 /*
|
|
1648 * Resolve the real path to the currently running launcher.
|
|
1649 */
|
|
1650 execname = SetExecname(argv);
|
|
1651 if (execname == NULL) {
|
|
1652 fprintf(stderr, "Unable to resolve current executable\n");
|
|
1653 exit(1);
|
|
1654 }
|
|
1655
|
|
1656 /*
|
|
1657 * If the path to the selected JRE directory is a match to the initial
|
|
1658 * portion of the path to the currently executing JRE, we have a winner!
|
|
1659 * If so, just return.
|
|
1660 */
|
|
1661 if (strncmp(wanted, execname, strlen(wanted)) == 0)
|
|
1662 return; /* I am the droid you were looking for */
|
|
1663
|
|
1664 /*
|
|
1665 * If this isn't the selected version, exec the selected version.
|
|
1666 */
|
|
1667 #ifdef JAVA_ARGS /* javac, jar and friends. */
|
|
1668 progname = "java";
|
|
1669 #else /* java, oldjava, javaw and friends */
|
|
1670 #ifdef PROGNAME
|
|
1671 progname = PROGNAME;
|
|
1672 #else
|
|
1673 progname = *argv;
|
|
1674 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) {
|
|
1675 progname = s + 1;
|
|
1676 }
|
|
1677 #endif /* PROGNAME */
|
|
1678 #endif /* JAVA_ARGS */
|
|
1679
|
|
1680 /*
|
|
1681 * This should never happen (because of the selection code in SelectJRE),
|
|
1682 * but check for "impossibly" long path names just because buffer overruns
|
|
1683 * can be so deadly.
|
|
1684 */
|
|
1685 if (strlen(wanted) + strlen(progname) + 6 > PATH_MAX) {
|
|
1686 fprintf(stderr, "Path length exceeds maximum length (PATH_MAX)\n");
|
|
1687 exit(1);
|
|
1688 }
|
|
1689
|
|
1690 /*
|
|
1691 * Construct the path and exec it.
|
|
1692 */
|
|
1693 (void)strcat(strcat(wanted, "/bin/"), progname);
|
|
1694 argv[0] = progname;
|
|
1695 if (_launcher_debug) {
|
|
1696 int i;
|
|
1697 printf("ReExec Command: %s (%s)\n", wanted, argv[0]);
|
|
1698 printf("ReExec Args:");
|
|
1699 for (i = 1; argv[i] != NULL; i++)
|
|
1700 printf(" %s", argv[i]);
|
|
1701 printf("\n");
|
|
1702 }
|
|
1703 (void)fflush(stdout);
|
|
1704 (void)fflush(stderr);
|
|
1705 execv(wanted, argv);
|
|
1706 perror("execv()");
|
|
1707 fprintf(stderr, "Exec of %s failed\n", wanted);
|
|
1708 exit(1);
|
|
1709 }
|
|
1710 #endif /* ifndef GAMMA */
|
|
1711
|
|
1712 /*
|
|
1713 * "Borrowed" from Solaris 10 where the unsetenv() function is being added
|
|
1714 * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As
|
|
1715 * such, in the fullness of time this will appear in libc on all relevant
|
|
1716 * Solaris/Linux platforms and maybe even the Windows platform. At that
|
|
1717 * time, this stub can be removed.
|
|
1718 *
|
|
1719 * This implementation removes the environment locking for multithreaded
|
|
1720 * applications. (We don't have access to these mutexes within libc and
|
|
1721 * the launcher isn't multithreaded.) Note that what remains is platform
|
|
1722 * independent, because it only relies on attributes that a POSIX environment
|
|
1723 * defines.
|
|
1724 *
|
|
1725 * Returns 0 on success, -1 on failure.
|
|
1726 *
|
|
1727 * Also removed was the setting of errno. The only value of errno set
|
|
1728 * was EINVAL ("Invalid Argument").
|
|
1729 */
|
|
1730
|
|
1731 /*
|
|
1732 * s1(environ) is name=value
|
|
1733 * s2(name) is name(not the form of name=value).
|
|
1734 * if names match, return value of 1, else return 0
|
|
1735 */
|
|
1736 static int
|
|
1737 match_noeq(const char *s1, const char *s2)
|
|
1738 {
|
|
1739 while (*s1 == *s2++) {
|
|
1740 if (*s1++ == '=')
|
|
1741 return (1);
|
|
1742 }
|
|
1743 if (*s1 == '=' && s2[-1] == '\0')
|
|
1744 return (1);
|
|
1745 return (0);
|
|
1746 }
|
|
1747
|
|
1748 /*
|
|
1749 * added for SUSv3 standard
|
|
1750 *
|
|
1751 * Delete entry from environ.
|
|
1752 * Do not free() memory! Other threads may be using it.
|
|
1753 * Keep it around forever.
|
|
1754 */
|
|
1755 static int
|
|
1756 borrowed_unsetenv(const char *name)
|
|
1757 {
|
|
1758 long idx; /* index into environ */
|
|
1759
|
|
1760 if (name == NULL || *name == '\0' ||
|
|
1761 strchr(name, '=') != NULL) {
|
|
1762 return (-1);
|
|
1763 }
|
|
1764
|
|
1765 for (idx = 0; environ[idx] != NULL; idx++) {
|
|
1766 if (match_noeq(environ[idx], name))
|
|
1767 break;
|
|
1768 }
|
|
1769 if (environ[idx] == NULL) {
|
|
1770 /* name not found but still a success */
|
|
1771 return (0);
|
|
1772 }
|
|
1773 /* squeeze up one entry */
|
|
1774 do {
|
|
1775 environ[idx] = environ[idx+1];
|
|
1776 } while (environ[++idx] != NULL);
|
|
1777
|
|
1778 return (0);
|
|
1779 }
|
|
1780 /* --- End of "borrowed" code --- */
|
|
1781
|
|
1782 /*
|
|
1783 * Wrapper for unsetenv() function.
|
|
1784 */
|
|
1785 int
|
|
1786 UnsetEnv(char *name)
|
|
1787 {
|
|
1788 return(borrowed_unsetenv(name));
|
|
1789 }
|
|
1790
|
|
1791 /* --- Splash Screen shared library support --- */
|
|
1792
|
|
1793 static const char* SPLASHSCREEN_SO = "libsplashscreen.so";
|
|
1794
|
|
1795 static void* hSplashLib = NULL;
|
|
1796
|
|
1797 void* SplashProcAddress(const char* name) {
|
|
1798 if (!hSplashLib) {
|
|
1799 hSplashLib = dlopen(SPLASHSCREEN_SO, RTLD_LAZY | RTLD_GLOBAL);
|
|
1800 }
|
|
1801 if (hSplashLib) {
|
|
1802 void* sym = dlsym(hSplashLib, name);
|
|
1803 return sym;
|
|
1804 } else {
|
|
1805 return NULL;
|
|
1806 }
|
|
1807 }
|
|
1808
|
|
1809 void SplashFreeLibrary() {
|
|
1810 if (hSplashLib) {
|
|
1811 dlclose(hSplashLib);
|
|
1812 hSplashLib = NULL;
|
|
1813 }
|
|
1814 }
|
|
1815
|
|
1816 const char *
|
|
1817 jlong_format_specifier() {
|
|
1818 return "%lld";
|
|
1819 }
|
|
1820
|
|
1821 /*
|
|
1822 * Block current thread and continue execution in a new thread
|
|
1823 */
|
|
1824 int
|
|
1825 ContinueInNewThread(int (JNICALL *continuation)(void *), jlong stack_size, void * args) {
|
|
1826 int rslt;
|
|
1827 #ifdef __linux__
|
|
1828 pthread_t tid;
|
|
1829 pthread_attr_t attr;
|
|
1830 pthread_attr_init(&attr);
|
|
1831 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
|
|
1832
|
|
1833 if (stack_size > 0) {
|
|
1834 pthread_attr_setstacksize(&attr, stack_size);
|
|
1835 }
|
|
1836
|
|
1837 if (pthread_create(&tid, &attr, (void *(*)(void*))continuation, (void*)args) == 0) {
|
|
1838 void * tmp;
|
|
1839 pthread_join(tid, &tmp);
|
|
1840 rslt = (int)tmp;
|
|
1841 } else {
|
|
1842 /*
|
|
1843 * Continue execution in current thread if for some reason (e.g. out of
|
|
1844 * memory/LWP) a new thread can't be created. This will likely fail
|
|
1845 * later in continuation as JNI_CreateJavaVM needs to create quite a
|
|
1846 * few new threads, anyway, just give it a try..
|
|
1847 */
|
|
1848 rslt = continuation(args);
|
|
1849 }
|
|
1850
|
|
1851 pthread_attr_destroy(&attr);
|
|
1852 #else
|
|
1853 thread_t tid;
|
|
1854 long flags = 0;
|
|
1855 if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) {
|
|
1856 void * tmp;
|
|
1857 thr_join(tid, NULL, &tmp);
|
|
1858 rslt = (int)tmp;
|
|
1859 } else {
|
|
1860 /* See above. Continue in current thread if thr_create() failed */
|
|
1861 rslt = continuation(args);
|
|
1862 }
|
|
1863 #endif
|
|
1864 return rslt;
|
|
1865 }
|
|
1866
|
|
1867 /* Coarse estimation of number of digits assuming the worst case is a 64-bit pid. */
|
|
1868 #define MAX_PID_STR_SZ 20
|
|
1869
|
|
1870 void SetJavaLauncherPlatformProps() {
|
|
1871 /* Linux only */
|
|
1872 #ifdef __linux__
|
|
1873 const char *substr = "-Dsun.java.launcher.pid=";
|
|
1874 char *pid_prop_str = (char *)JLI_MemAlloc(strlen(substr) + MAX_PID_STR_SZ + 1);
|
|
1875 sprintf(pid_prop_str, "%s%d", substr, getpid());
|
|
1876 AddOption(pid_prop_str, NULL);
|
|
1877 #endif
|
|
1878 }
|