| 1 | //
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| 2 | // Gestionnaire de lien dynamique - R. Ansari 12/98
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| 3 | // LAL (Orsay) / IN2P3-CNRS DAPNIA/SPP (Saclay) / CEA
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| 4 | //
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| 5 | #include <machdefs.h>
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| 6 |
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| 7 | #include "sopnamsp.h"
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| 8 | #include "pdlmgr.h"
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| 9 | #include <stdio.h>
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| 10 | #include <stdlib.h>
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| 11 |
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| 12 | #include <iostream>
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| 13 |
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| 14 |
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| 15 | // Extension de noms de fichiers Shared libs
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| 16 | static const char* sofext = ".so";
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| 17 | static const char* sofext_HPUX = ".sl";
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| 18 | // static const char* sofext_Darwin = ".dylib"; pas necessaire - Reza 02/2002
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| 19 |
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| 20 | // Variables et methodes static
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| 21 | int PDynLinkMgr::numSO = 0;
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| 22 | string* PDynLinkMgr::tmpDir = NULL;
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| 23 |
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| 24 | /*!
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| 25 | \class SOPHYA::PDynLinkMgr
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| 26 | \ingroup SysTools
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| 27 | This classes handles the run-time operations related to using shared
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| 28 | libraries. The present version has been adapted for different Unix
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| 29 | flavours (Linux, HP/Compaq/Digital OSF-Tru64, SGI IRIX, IBM AIX, Sun Solaris,
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| 30 | MacOS X/Darwin). \n
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| 31 | For MacOS X/Darwin, the NSxxx API
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| 32 | <tt> (NSLinkModule , NSCreateObjectFileImageFromFile, ...) </tt>
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| 33 | is used.
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| 34 | The example here shows the linking of shared library named "mylib.so"
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| 35 | containing a function \c double \c myfunction(double x).
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| 36 | \code
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| 37 | #include "pdlmgr.h"
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| 38 | typedef double (* AFunctionOfX) (double x);
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| 39 | {
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| 40 | // ...
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| 41 | string soname = "mylib.so";
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| 42 | string funcname = "myfunction";
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| 43 | PDynLinkMgr dyl(son);
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| 44 | AFunctionOfX f = (AFunctionOfX)dyl.GetFunction(funcname);
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| 45 | double x = 3.1425;
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| 46 | if (f != NULL)
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| 47 | cout << " X= " << x << " myfunction(x)=" << f(x) << endl;
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| 48 | // ...
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| 49 | }
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| 50 | \endcode
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| 51 | */
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| 52 |
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| 53 | /* --Methode-Static-- */
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| 54 | /*! Sets the path for a temporary space where shared libraries are copied.
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| 55 | The path is appended to \b LD_LIBRARY_PATH
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| 56 | */
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| 57 | void PDynLinkMgr::SetTmpDir(string const & path)
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| 58 | {
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| 59 | if ( (path.length() > 0) && (path[path.length()-1] != '/') ) GetTmpDir() = path + '/';
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| 60 | else GetTmpDir() = path;
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| 61 | #if defined(OSF1) || defined(Linux) || defined(SunOS) || defined(IRIX64)
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| 62 | char* varenv=NULL;
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| 63 | #if !defined(IRIX64)
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| 64 | string cmd = "LD_LIBRARY_PATH=";
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| 65 | varenv=getenv("LD_LIBRARY_PATH");
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| 66 | #else
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| 67 | #ifdef SO_ARCH64
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| 68 | string cmd = "LD_LIBRARYN64_PATH=";
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| 69 | varenv=getenv("LD_LIBRARYN64_PATH");
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| 70 | #else
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| 71 | string cmd = "LD_LIBRARYN32_PATH=";
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| 72 | varenv=getenv("LD_LIBRARYN32_PATH");
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| 73 | #endif
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| 74 | #endif
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| 75 |
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| 76 | if (varenv == NULL) {
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| 77 | cmd += '.';
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| 78 | if (path.length() > 0) cmd += ':' + path;
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| 79 | }
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| 80 | else {
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| 81 | if (varenv[0] != '.') cmd += ".:";
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| 82 | if (path.length() > 0) cmd += path + ':';
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| 83 | cmd += varenv;
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| 84 | putenv(const_cast<char *>(cmd.c_str()));
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| 85 | }
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| 86 | #elif defined(AIX)
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| 87 | string cmd = "LIBPATH=";
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| 88 | char* varenv=NULL;
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| 89 | varenv=getenv("LIBPATH");
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| 90 | if (varenv == NULL) {
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| 91 | cmd += '.';
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| 92 | if (path.length() > 0) cmd += ':' + path;
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| 93 | cmd += ":/usr/lib:/lib";
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| 94 | }
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| 95 | else {
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| 96 | if (varenv[0] != '.') cmd += ".:";
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| 97 | if (path.length() > 0) cmd += path + ':';
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| 98 | cmd += varenv;
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| 99 | //AIX: l'argument de putenv n'est pas const (Reza Dec 2005)
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| 100 | //On fait un new - mais qui fait le delete ?
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| 101 | char * pevc = new char [cmd.length()+1];
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| 102 | strcpy(pevc, cmd.c_str());
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| 103 | putenv(pevc);
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| 104 | }
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| 105 |
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| 106 | #endif
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| 107 | return;
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| 108 | }
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| 109 |
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| 110 | /* --Methode-Static-- */
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| 111 | /*! Returns the temporary space path */
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| 112 | string& PDynLinkMgr::GetTmpDir()
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| 113 | {
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| 114 | if (tmpDir == NULL) {
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| 115 | tmpDir = new string("");
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| 116 | char* varenv;
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| 117 | if ( (varenv=getenv("TMPDIR")) != NULL ) {
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| 118 | *tmpDir = varenv;
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| 119 | if ((*tmpDir)[tmpDir->length()-1] != '/') (*tmpDir) += '/';
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| 120 | }
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| 121 | }
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| 122 | return(*tmpDir);
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| 123 | }
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| 124 |
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| 125 | /* --Methode-Static-- */
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| 126 | /*! Compiles the C source file named \b fname and creates the
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| 127 | corresponding shared library linking against the standard
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| 128 | C library (-lc) and the math library (-lm).
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| 129 | Returns a pointer to the created PDynLinkMgr object (by new).
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| 130 | Returns the NULL pointer in case of errors.
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| 131 | */
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| 132 | PDynLinkMgr* PDynLinkMgr::BuildFromCFile(string const & fname)
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| 133 | {
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| 134 | size_t l = fname.length();
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| 135 | if (l < 1) return(NULL);
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| 136 | string fnameobj = GetTmpDir()+"tmp_pdl.o";
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| 137 |
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| 138 | string cmd;
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| 139 | int rc;
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| 140 |
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| 141 | string compopt = "cc -c -o ";
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| 142 | #if defined(__GNUG__)
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| 143 | #ifndef SO_NOFPIC
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| 144 | compopt = "cc -fPIC -c -o " ;
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| 145 | #endif
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| 146 | #endif
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| 147 | #if defined(IRIX64) && defined(SO_ARCH64)
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| 148 | compopt = "cc -64 -c -o " ;
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| 149 | #endif
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| 150 | #if defined(AIX) && defined(SO_ARCH64)
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| 151 | compopt = "cc -q64 -c -o " ;
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| 152 | #endif
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| 153 |
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| 154 | // Compilation du fichier
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| 155 | cmd = compopt + fnameobj + " " + fname;
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| 156 |
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| 157 | rc = system(cmd.c_str());
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| 158 | if (rc != 0) {
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| 159 | cerr << "PDynLinkMgr::BuildFromCFile() Error Rc(" << cmd <<")= "<< rc << endl;
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| 160 | return(NULL);
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| 161 | }
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| 162 |
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| 163 | char buff[32];
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| 164 | numSO++;
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| 165 | #ifndef HPUX
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| 166 | sprintf(buff,"pdlmgr%d%s", numSO,sofext);
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| 167 | #endif
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| 168 | string fnameso = GetTmpDir()+buff;
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| 169 |
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| 170 | // Creation du shared-lib
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| 171 | #if defined(OSF1)
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| 172 | cmd = "ld -shared -o " + fnameso + " -all " + fnameobj + " -none -lm -lc";
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| 173 | #elif defined(Linux)
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| 174 | cmd = "ld -shared -o " + fnameso + " " + fnameobj + " -lm -lc";
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| 175 | #elif defined(SunOS)
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| 176 | cmd = "ld -G -o " + fnameso + " " + fnameobj + " -lm -lc";
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| 177 | #elif defined(IRIX64)
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| 178 | #ifdef SO_ARCH64
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| 179 | cmd = "ld -64 -shared -o " + fnameso + " " + fnameobj + " -lm -lc";
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| 180 | #else
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| 181 | cmd = "ld -shared -o " + fnameso + " " + fnameobj + " -lm -lc";
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| 182 | #endif
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| 183 | #elif defined(AIX)
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| 184 | // cmd = "ld -G -bnogc -bexpall -bM:1L -o " + fnameso + " " + fnameobj;
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| 185 | #ifdef SO_ARCH64
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| 186 | cmd = "cc -brtl -qmkshrobj -q64 -o " + fnameso + " " + fnameobj + " -lm -lc";;
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| 187 | #else
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| 188 | cmd = "cc -brtl -qmkshrobj -o " + fnameso + " " + fnameobj + " -lm -lc";;
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| 189 | #endif
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| 190 | #elif defined(HPUX)
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| 191 | cmd = "ld -b -o " + fnameso + " " + fnameobj + " -lm -lc";
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| 192 | #elif defined(Darwin)
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| 193 | // cmd = "cc -bundle -flat_namespace -undefined suppress -o " + fnameso + " " + fnameobj + " -lm -lcc_dynamic -lSystem ";
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| 194 | cmd = "cc -bundle -o " + fnameso + " " + fnameobj + " -lSystem -lm";
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| 195 | #else
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| 196 | cmd = "ld -o " + fnameso + " " + fnameobj + " -lm -lc";
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| 197 | #endif
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| 198 | rc = system(cmd.c_str());
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| 199 | if (rc != 0) {
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| 200 | cerr << "PDynLinkMgr::BuildFromCFile() Error Rc(" << cmd <<")= "<< rc << endl;
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| 201 | return(NULL);
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| 202 | }
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| 203 | PDynLinkMgr* rdyn = new PDynLinkMgr(fnameso, false);
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| 204 | rdyn->copy = true;
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| 205 | return(rdyn);
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| 206 |
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| 207 | }
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| 208 |
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| 209 | /* --Methode-- */
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| 210 | /*! The constructor.
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| 211 | \param soname : Name of the shared library. ".so" is appended
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| 212 | to the name if no dot "." is found in the name.
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| 213 | \param cp : if true, copies the shared library in the temporary space.
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| 214 | */
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| 215 | PDynLinkMgr::PDynLinkMgr(string& soname, bool cp)
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| 216 | {
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| 217 | dylok = false;
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| 218 | soName = "";
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| 219 |
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| 220 | if (soname.find_last_of(".") > soname.length())
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| 221 | #ifdef HPUX
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| 222 | soname += sofext_HPUX;
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| 223 | #else
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| 224 | soname += sofext;
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| 225 | #endif
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| 226 |
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| 227 | string fnameso;
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| 228 | if (cp) {
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| 229 | numSO++;
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| 230 | char buff[32];
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| 231 | #ifndef HPUX
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| 232 | sprintf(buff,"pdlmgr%d%s", numSO,sofext);
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| 233 | #elif defined(Darwin)
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| 234 | sprintf(buff,"pdlmgr%d%s", numSO,sofext_Darwin);
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| 235 | #else
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| 236 | sprintf(buff,"pdlmgr%d%s", numSO,sofext_HPUX);
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| 237 | #endif
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| 238 | fnameso = GetTmpDir()+buff;
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| 239 | string cmd = "cp " + soname + " " + fnameso;
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| 240 | int rc = system(cmd.c_str());
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| 241 | if (rc != 0) {
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| 242 | cerr << "PDynLinkMgr::PDynLinkMgr() Error Rc(" << cmd <<")= "<< rc << endl;
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| 243 | return;
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| 244 | }
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| 245 | }
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| 246 | else fnameso = soname;
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| 247 | copy = cp;
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| 248 | soName = fnameso;
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| 249 |
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| 250 | string sdylerr;
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| 251 | #if defined(HPUX)
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| 252 | cerr << "PDynLinkMgr::PDynLinkMgr() Not yet available on HP-UX " << endl;
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| 253 | return;
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| 254 | #elif defined(Darwin)
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| 255 | NSObjectFileImageReturnCode nsrc = NSCreateObjectFileImageFromFile(fnameso.c_str(), &nsobjfile);
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| 256 | if (nsrc == NSObjectFileImageSuccess) {
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| 257 | nsmod = NSLinkModule(nsobjfile, fnameso.c_str(),
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| 258 | NSLINKMODULE_OPTION_BINDNOW | NSLINKMODULE_OPTION_PRIVATE |
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| 259 | NSLINKMODULE_OPTION_RETURN_ON_ERROR);
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| 260 | // The second argument of NSLinkModule is the module name
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| 261 | // We might associate later a name for the module in the PDynLinkMgr object
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| 262 | if (nsmod != NULL) dylok = true;
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| 263 | else cerr << "PDynLinkMgr::PDynLinkMgr()/ Error from NSLinkModule ... " << endl;
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| 264 | }
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| 265 | else {
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| 266 | cerr << "PDynLinkMgr::PDynLinkMgr()/ Error from NSCreateObjectFileImageFromFile ... " << endl;
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| 267 | if (nsrc == NSObjectFileImageFailure) cerr << " ErrCode= NSObjectFileImageFailure " << endl;
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| 268 | else if (nsrc == NSObjectFileImageInappropriateFile) cerr << " ErrCode= NSObjectFileImageInappropriateFile" << endl;
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| 269 | else if (nsrc == NSObjectFileImageArch ) cerr << " ErrCode= NSObjectFileImageArch" << endl;
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| 270 | else if (nsrc == NSObjectFileImageFormat) cerr << " ErrCode= NSObjectFileImageFormat" << endl;
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| 271 | else if (nsrc == NSObjectFileImageAccess) cerr << " ErrCode= NSObjectFileImageAccess" << endl;
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| 272 | }
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| 273 | #else
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| 274 | dlhandle = NULL;
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| 275 | dlhandle = dlopen(fnameso.c_str(), RTLD_NOW);
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| 276 | if (dlhandle != NULL) dylok = true;
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| 277 | else {
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| 278 | sdylerr = "Loader Error (dlerror()):";
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| 279 | sdylerr += dlerror();
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| 280 | }
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| 281 | #endif
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| 282 |
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| 283 | if (!dylok) {
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| 284 | cerr << "PDynLinkMgr::PDynLinkMgr(): Error opening SO " << fnameso
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| 285 | << " (" << soname << ")" << endl;
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| 286 | if (sdylerr.length() > 0) cerr << sdylerr;
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| 287 | return;
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| 288 | }
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| 289 | }
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| 290 |
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| 291 | /* --Methode-- */
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| 292 | /*! Destructor. Closes the shared library. Removes the file if it had been
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| 293 | copied in the temporary space, or generated by \b BuildFromCFile */
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| 294 | PDynLinkMgr::~PDynLinkMgr()
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| 295 | {
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| 296 | #if defined(HPUX)
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| 297 | cerr << "PDynLinkMgr::~PDynLinkMgr() Not yet available on HP-UX " << endl;
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| 298 | // return;
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| 299 | #elif defined(Darwin)
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| 300 | if (dylok) {
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| 301 | if (nsmod != NULL) NSUnLinkModule(nsmod, NSUNLINKMODULE_OPTION_NONE);
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| 302 | NSDestroyObjectFileImage(nsobjfile);
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| 303 | }
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| 304 | #else
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| 305 | if (dylok) {
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| 306 | if (dlhandle) dlclose(dlhandle); dlhandle = NULL;
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| 307 | }
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| 308 | #endif
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| 309 | if (copy) {
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| 310 | string cmd = "rm -f " + soName;
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| 311 | system(cmd.c_str());
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| 312 | }
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| 313 | }
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| 314 |
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| 315 | /* --Methode-- */
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| 316 | /*! Returns a handle to the function named \b funcname.
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| 317 | Returns the NULL pointer in case of error */
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| 318 | DlFunction PDynLinkMgr::GetFunction(string const & funcname)
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| 319 | {
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| 320 | DlFunction f = NULL;
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| 321 | if (!dylok) {
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| 322 | cerr << "PDynLinkMgr::GetFunction() Error:sharedobjet/dynamic library not open -> f=NULL" << endl;
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| 323 | return f;
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| 324 | }
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| 325 | #if defined(HPUX)
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| 326 | cerr << "PDynLinkMgr::GetFunction() Not yet available on HP-UX " << endl;
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| 327 | return f;
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| 328 | #endif
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| 329 | #if defined(Darwin)
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| 330 | string funame = "_" + funcname;
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| 331 | NSSymbol nsf = NSLookupSymbolInModule(nsmod, funame.c_str());
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| 332 | f = (DlFunction)NSAddressOfSymbol(nsf);
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| 333 | #else
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| 334 | string const & funame = funcname;
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| 335 | if (dlhandle != NULL)
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| 336 | f = (DlFunction)dlsym(dlhandle, funame.c_str());
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| 337 | #endif
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| 338 |
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| 339 | if (f == NULL) cerr << "PDynLinkMgr::GetFunction(): Error linking " << funcname << endl;
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| 340 | return(f);
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| 341 | }
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| 342 |
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| 343 |
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