| 1 | //
|
|---|
| 2 | // Gestionnaire de lien dynamique - R. Ansari 12/98
|
|---|
| 3 | // LAL (Orsay) / IN2P3-CNRS DAPNIA/SPP (Saclay) / CEA
|
|---|
| 4 | //
|
|---|
| 5 | #include <machdefs.h>
|
|---|
| 6 |
|
|---|
| 7 | #include "pdlmgr.h"
|
|---|
| 8 | #include <stdio.h>
|
|---|
| 9 | #include <stdlib.h>
|
|---|
| 10 |
|
|---|
| 11 | #include <iostream>
|
|---|
| 12 |
|
|---|
| 13 |
|
|---|
| 14 | // Extension de noms de fichiers Shared libs
|
|---|
| 15 | static const char* sofext = ".so";
|
|---|
| 16 | static const char* sofext_HPUX = ".sl";
|
|---|
| 17 | // static const char* sofext_Darwin = ".dylib"; pas necessaire - Reza 02/2002
|
|---|
| 18 |
|
|---|
| 19 | // Variables et methodes static
|
|---|
| 20 | int PDynLinkMgr::numSO = 0;
|
|---|
| 21 | string* PDynLinkMgr::tmpDir = NULL;
|
|---|
| 22 |
|
|---|
| 23 | /*!
|
|---|
| 24 | \class SOPHYA::PDynLinkMgr
|
|---|
| 25 | \ingroup SysTools
|
|---|
| 26 | This classes handles the run-time operations related to using shared
|
|---|
| 27 | libraries. The present version has been adapted for different Unix
|
|---|
| 28 | flavours (Linux, Compaq/Digital Unix, SGI IRIX, IBM AIX, Sun Solaris,
|
|---|
| 29 | MacOS X/Darwin).
|
|---|
| 30 | The example here shows the linking of shared library named "mylib.so"
|
|---|
| 31 | containing a function \c double \c myfunction(double x).
|
|---|
| 32 | \code
|
|---|
| 33 | #include "pdlmgr.h"
|
|---|
| 34 | typedef double (* AFunctionOfX) (double x);
|
|---|
| 35 | {
|
|---|
| 36 | // ...
|
|---|
| 37 | string soname = "mylib.so";
|
|---|
| 38 | string funcname = "myfunction";
|
|---|
| 39 | PDynLinkMgr dyl(son);
|
|---|
| 40 | AFunctionOfX f = (AFunctionOfX)dyl.GetFunction(funcname);
|
|---|
| 41 | double x = 3.1425;
|
|---|
| 42 | if (f != NULL)
|
|---|
| 43 | cout << " X= " << x << " myfunction(x)=" << f(x) << endl;
|
|---|
| 44 | // ...
|
|---|
| 45 | }
|
|---|
| 46 | \endcode
|
|---|
| 47 | */
|
|---|
| 48 |
|
|---|
| 49 | /* --Methode-Static-- */
|
|---|
| 50 | /*! Sets the path for a temporary space where shared libraries are copied.
|
|---|
| 51 | The path is appended to \b LD_LIBRARY_PATH
|
|---|
| 52 | */
|
|---|
| 53 | void PDynLinkMgr::SetTmpDir(string const & path)
|
|---|
| 54 | {
|
|---|
| 55 | if ( (path.length() > 0) && (path[path.length()-1] != '/') ) GetTmpDir() = path + '/';
|
|---|
| 56 | else GetTmpDir() = path;
|
|---|
| 57 | #if defined(OSF1) || defined(Linux) || defined(SunOS) || defined(IRIX64)
|
|---|
| 58 | char* varenv=NULL;
|
|---|
| 59 | #if !defined(IRIX64)
|
|---|
| 60 | string cmd = "LD_LIBRARY_PATH=";
|
|---|
| 61 | varenv=getenv("LD_LIBRARY_PATH");
|
|---|
| 62 | #else
|
|---|
| 63 | #ifdef SGI_ARCH64
|
|---|
| 64 | string cmd = "LD_LIBRARYN32_PATH=";
|
|---|
| 65 | varenv=getenv("LD_LIBRARYN32_PATH");
|
|---|
| 66 | #else
|
|---|
| 67 | string cmd = "LD_LIBRARYN64_PATH=";
|
|---|
| 68 | varenv=getenv("LD_LIBRARYN64_PATH");
|
|---|
| 69 | #endif
|
|---|
| 70 | #endif
|
|---|
| 71 |
|
|---|
| 72 | if (varenv == NULL) {
|
|---|
| 73 | cmd += '.';
|
|---|
| 74 | if (path.length() > 0) cmd += ':' + path;
|
|---|
| 75 | }
|
|---|
| 76 | else {
|
|---|
| 77 | if (varenv[0] != '.') cmd += ".:";
|
|---|
| 78 | if (path.length() > 0) cmd += path + ':';
|
|---|
| 79 | cmd += varenv;
|
|---|
| 80 | putenv(const_cast<char *>(cmd.c_str()));
|
|---|
| 81 | }
|
|---|
| 82 | #elif defined(AIX)
|
|---|
| 83 | string cmd = "LIBPATH=";
|
|---|
| 84 | char* varenv=NULL;
|
|---|
| 85 | varenv=getenv("LIBPATH");
|
|---|
| 86 | if (varenv == NULL) {
|
|---|
| 87 | cmd += '.';
|
|---|
| 88 | if (path.length() > 0) cmd += ':' + path;
|
|---|
| 89 | cmd += ":/usr/lib:/lib";
|
|---|
| 90 | }
|
|---|
| 91 | else {
|
|---|
| 92 | if (varenv[0] != '.') cmd += ".:";
|
|---|
| 93 | if (path.length() > 0) cmd += path + ':';
|
|---|
| 94 | cmd += varenv;
|
|---|
| 95 | putenv(const_cast<char *>(cmd.c_str()));
|
|---|
| 96 | }
|
|---|
| 97 |
|
|---|
| 98 | #endif
|
|---|
| 99 | return;
|
|---|
| 100 | }
|
|---|
| 101 |
|
|---|
| 102 | /* --Methode-Static-- */
|
|---|
| 103 | /*! Returns the temporary space path */
|
|---|
| 104 | string& PDynLinkMgr::GetTmpDir()
|
|---|
| 105 | {
|
|---|
| 106 | if (tmpDir == NULL) {
|
|---|
| 107 | tmpDir = new string("");
|
|---|
| 108 | char* varenv;
|
|---|
| 109 | if ( (varenv=getenv("TMPDIR")) != NULL ) {
|
|---|
| 110 | *tmpDir = varenv;
|
|---|
| 111 | if ((*tmpDir)[tmpDir->length()-1] != '/') (*tmpDir) += '/';
|
|---|
| 112 | }
|
|---|
| 113 | }
|
|---|
| 114 | return(*tmpDir);
|
|---|
| 115 | }
|
|---|
| 116 |
|
|---|
| 117 | /* --Methode-Static-- */
|
|---|
| 118 | /*! Compiles the C source file named \b fname and creates the
|
|---|
| 119 | corresponding shared library linking against the standard
|
|---|
| 120 | C library (-lc) and the math library (-lm).
|
|---|
| 121 | Returns a pointer to the created PDynLinkMgr object (by new).
|
|---|
| 122 | Returns the NULL pointer in case of errors.
|
|---|
| 123 | */
|
|---|
| 124 | PDynLinkMgr* PDynLinkMgr::BuildFromCFile(string const & fname)
|
|---|
| 125 | {
|
|---|
| 126 | size_t l = fname.length();
|
|---|
| 127 | if (l < 1) return(NULL);
|
|---|
| 128 | string fnameobj = GetTmpDir()+"tmp_pdl.o";
|
|---|
| 129 |
|
|---|
| 130 | string cmd;
|
|---|
| 131 | int rc;
|
|---|
| 132 |
|
|---|
| 133 | // Compilation du fichier
|
|---|
| 134 | #ifndef __mac__
|
|---|
| 135 | #ifdef SGI_ARCH64
|
|---|
| 136 | cmd = "cc -64 -c -o " + fnameobj + " " + fname;
|
|---|
| 137 | #else
|
|---|
| 138 | cmd = "cc -c -o " + fnameobj + " " + fname;
|
|---|
| 139 | #endif
|
|---|
| 140 | #else
|
|---|
| 141 | cmd = "Il faut compiler !!!" + fnameobj + " " + fname;
|
|---|
| 142 | #endif
|
|---|
| 143 | rc = system(cmd.c_str());
|
|---|
| 144 | if (rc != 0) {
|
|---|
| 145 | cerr << "PDynLinkMgr::BuildFromCFile() Error Rc(" << cmd <<")= "<< rc << endl;
|
|---|
| 146 | return(NULL);
|
|---|
| 147 | }
|
|---|
| 148 |
|
|---|
| 149 | char buff[32];
|
|---|
| 150 | numSO++;
|
|---|
| 151 | #ifndef HPUX
|
|---|
| 152 | sprintf(buff,"pdlmgr%d%s", numSO,sofext);
|
|---|
| 153 | #endif
|
|---|
| 154 | string fnameso = GetTmpDir()+buff;
|
|---|
| 155 |
|
|---|
| 156 | // Creation du shared-lib
|
|---|
| 157 | #if defined(OSF1)
|
|---|
| 158 | cmd = "ld -shared -o " + fnameso + " -all " + fnameobj + " -none -lm -lc";
|
|---|
| 159 | #elif defined(Linux)
|
|---|
| 160 | cmd = "ld -shared -o " + fnameso + " " + fnameobj + " -lm -lc";
|
|---|
| 161 | #elif defined(SunOS)
|
|---|
| 162 | cmd = "ld -G -o " + fnameso + " " + fnameobj + " -lm -lc";
|
|---|
| 163 | #elif defined(IRIX64)
|
|---|
| 164 | #ifdef SGI_ARCH64
|
|---|
| 165 | cmd = "ld -64 -shared -o " + fnameso + " " + fnameobj + " -lm -lc";
|
|---|
| 166 | #else
|
|---|
| 167 | cmd = "ld -shared -o " + fnameso + " " + fnameobj + " -lm -lc";
|
|---|
| 168 | #endif
|
|---|
| 169 | #elif defined(AIX)
|
|---|
| 170 | cmd = "ld -G -bnogc -bexpall -bM:1L -o " + fnameso + " " + fnameobj;
|
|---|
| 171 | #elif defined(HPUX)
|
|---|
| 172 | cmd = "ld -b -o " + fnameso + " " + fnameobj + " -lm -lc";
|
|---|
| 173 | #elif defined(Darwin)
|
|---|
| 174 | // cmd = "cc -bundle -flat_namespace -undefined suppress -o " + fnameso + " " + fnameobj + " -lm -lcc_dynamic -lSystem ";
|
|---|
| 175 | cmd = "cc -bundle -o " + fnameso + " " + fnameobj + " -lSystem -lm";
|
|---|
| 176 | #else
|
|---|
| 177 | cmd = "ld -o " + fnameso + " " + fnameobj + " -lm -lc";
|
|---|
| 178 | #endif
|
|---|
| 179 | rc = system(cmd.c_str());
|
|---|
| 180 | if (rc != 0) {
|
|---|
| 181 | cerr << "PDynLinkMgr::BuildFromCFile() Error Rc(" << cmd <<")= "<< rc << endl;
|
|---|
| 182 | return(NULL);
|
|---|
| 183 | }
|
|---|
| 184 | PDynLinkMgr* rdyn = new PDynLinkMgr(fnameso, false);
|
|---|
| 185 | rdyn->copy = true;
|
|---|
| 186 | return(rdyn);
|
|---|
| 187 |
|
|---|
| 188 | }
|
|---|
| 189 |
|
|---|
| 190 | /* --Methode-- */
|
|---|
| 191 | /*! The constructor.
|
|---|
| 192 | \param soname : Name of the shared library. ".so" is appended
|
|---|
| 193 | to the name if no dot "." is found in the name.
|
|---|
| 194 | \param cp : if true, copies the shared library in the temporary space.
|
|---|
| 195 | */
|
|---|
| 196 | PDynLinkMgr::PDynLinkMgr(string& soname, bool cp)
|
|---|
| 197 | {
|
|---|
| 198 | dylok = false;
|
|---|
| 199 | soName = "";
|
|---|
| 200 |
|
|---|
| 201 | if (soname.find_last_of(".") > soname.length())
|
|---|
| 202 | #ifdef HPUX
|
|---|
| 203 | soname += sofext_HPUX;
|
|---|
| 204 | #else
|
|---|
| 205 | soname += sofext;
|
|---|
| 206 | #endif
|
|---|
| 207 |
|
|---|
| 208 | string fnameso;
|
|---|
| 209 | if (cp) {
|
|---|
| 210 | numSO++;
|
|---|
| 211 | char buff[32];
|
|---|
| 212 | #ifndef HPUX
|
|---|
| 213 | sprintf(buff,"pdlmgr%d%s", numSO,sofext);
|
|---|
| 214 | #elif defined(Darwin)
|
|---|
| 215 | sprintf(buff,"pdlmgr%d%s", numSO,sofext_Darwin);
|
|---|
| 216 | #else
|
|---|
| 217 | sprintf(buff,"pdlmgr%d%s", numSO,sofext_HPUX);
|
|---|
| 218 | #endif
|
|---|
| 219 | fnameso = GetTmpDir()+buff;
|
|---|
| 220 | string cmd = "cp " + soname + " " + fnameso;
|
|---|
| 221 | int rc = system(cmd.c_str());
|
|---|
| 222 | if (rc != 0) {
|
|---|
| 223 | cerr << "PDynLinkMgr::PDynLinkMgr() Error Rc(" << cmd <<")= "<< rc << endl;
|
|---|
| 224 | return;
|
|---|
| 225 | }
|
|---|
| 226 | }
|
|---|
| 227 | else fnameso = soname;
|
|---|
| 228 | copy = cp;
|
|---|
| 229 | soName = fnameso;
|
|---|
| 230 |
|
|---|
| 231 | string sdylerr;
|
|---|
| 232 | #if defined(HPUX)
|
|---|
| 233 | cerr << "PDynLinkMgr::PDynLinkMgr() Not yet available on HP-UX " << endl;
|
|---|
| 234 | return;
|
|---|
| 235 | #elif defined(Darwin)
|
|---|
| 236 | NSObjectFileImageReturnCode nsrc = NSCreateObjectFileImageFromFile(fnameso.c_str(), &nsobjfile);
|
|---|
| 237 | if (nsrc == NSObjectFileImageSuccess) {
|
|---|
| 238 | nsmod = NSLinkModule(nsobjfile, fnameso.c_str(),
|
|---|
| 239 | NSLINKMODULE_OPTION_BINDNOW | NSLINKMODULE_OPTION_PRIVATE |
|
|---|
| 240 | NSLINKMODULE_OPTION_RETURN_ON_ERROR);
|
|---|
| 241 | // The second argument of NSLinkModule is the module name
|
|---|
| 242 | // We might associate later a name for the module in the PDynLinkMgr object
|
|---|
| 243 | if (nsmod != NULL) dylok = true;
|
|---|
| 244 | else cerr << "PDynLinkMgr::PDynLinkMgr()/ Error from NSLinkModule ... " << endl;
|
|---|
| 245 | }
|
|---|
| 246 | else {
|
|---|
| 247 | cerr << "PDynLinkMgr::PDynLinkMgr()/ Error from NSCreateObjectFileImageFromFile ... " << endl;
|
|---|
| 248 | if (nsrc == NSObjectFileImageFailure) cerr << " ErrCode= NSObjectFileImageFailure " << endl;
|
|---|
| 249 | else if (nsrc == NSObjectFileImageInappropriateFile) cerr << " ErrCode= NSObjectFileImageInappropriateFile" << endl;
|
|---|
| 250 | else if (nsrc == NSObjectFileImageArch ) cerr << " ErrCode= NSObjectFileImageArch" << endl;
|
|---|
| 251 | else if (nsrc == NSObjectFileImageFormat) cerr << " ErrCode= NSObjectFileImageFormat" << endl;
|
|---|
| 252 | else if (nsrc == NSObjectFileImageAccess) cerr << " ErrCode= NSObjectFileImageAccess" << endl;
|
|---|
| 253 | }
|
|---|
| 254 | #else
|
|---|
| 255 | dlhandle = NULL;
|
|---|
| 256 | dlhandle = dlopen(fnameso.c_str(), RTLD_NOW);
|
|---|
| 257 | if (dlhandle != NULL) dylok = true;
|
|---|
| 258 | else {
|
|---|
| 259 | sdylerr = "Loader Error (dlerror()):";
|
|---|
| 260 | sdylerr += dlerror();
|
|---|
| 261 | }
|
|---|
| 262 | #endif
|
|---|
| 263 |
|
|---|
| 264 | if (!dylok) {
|
|---|
| 265 | cerr << "PDynLinkMgr::PDynLinkMgr(): Error opening SO " << fnameso
|
|---|
| 266 | << " (" << soname << ")" << endl;
|
|---|
| 267 | if (sdylerr.length() > 0) cerr << sdylerr;
|
|---|
| 268 | return;
|
|---|
| 269 | }
|
|---|
| 270 | }
|
|---|
| 271 |
|
|---|
| 272 | /* --Methode-- */
|
|---|
| 273 | /*! Destructor. Closes the shared library. Removes the file if it had been
|
|---|
| 274 | copied in the temporary space, or generated by \b BuildFromCFile */
|
|---|
| 275 | PDynLinkMgr::~PDynLinkMgr()
|
|---|
| 276 | {
|
|---|
| 277 | #if defined(HPUX)
|
|---|
| 278 | cerr << "PDynLinkMgr::~PDynLinkMgr() Not yet available on HP-UX " << endl;
|
|---|
| 279 | // return;
|
|---|
| 280 | #elif defined(Darwin)
|
|---|
| 281 | if (dylok) {
|
|---|
| 282 | if (nsmod != NULL) NSUnLinkModule(nsmod, NSUNLINKMODULE_OPTION_NONE);
|
|---|
| 283 | NSDestroyObjectFileImage(nsobjfile);
|
|---|
| 284 | }
|
|---|
| 285 | #else
|
|---|
| 286 | if (dylok) {
|
|---|
| 287 | if (dlhandle) dlclose(dlhandle); dlhandle = NULL;
|
|---|
| 288 | }
|
|---|
| 289 | #endif
|
|---|
| 290 | if (copy) {
|
|---|
| 291 | string cmd = "rm -f " + soName;
|
|---|
| 292 | system(cmd.c_str());
|
|---|
| 293 | }
|
|---|
| 294 | }
|
|---|
| 295 |
|
|---|
| 296 | /* --Methode-- */
|
|---|
| 297 | /*! Returns a handle to the function named \b funcname.
|
|---|
| 298 | Returns the NULL pointer in case of error */
|
|---|
| 299 | DlFunction PDynLinkMgr::GetFunction(string const & funcname)
|
|---|
| 300 | {
|
|---|
| 301 | DlFunction f = NULL;
|
|---|
| 302 | if (!dylok) {
|
|---|
| 303 | cerr << "PDynLinkMgr::GetFunction() Error:sharedobjet/dynamic library not open -> f=NULL" << endl;
|
|---|
| 304 | return f;
|
|---|
| 305 | }
|
|---|
| 306 | #if defined(HPUX)
|
|---|
| 307 | cerr << "PDynLinkMgr::GetFunction() Not yet available on HP-UX " << endl;
|
|---|
| 308 | return f;
|
|---|
| 309 | #endif
|
|---|
| 310 | #if defined(Darwin)
|
|---|
| 311 | string funame = "_" + funcname;
|
|---|
| 312 | NSSymbol nsf = NSLookupSymbolInModule(nsmod, funame.c_str());
|
|---|
| 313 | f = (DlFunction)NSAddressOfSymbol(nsf);
|
|---|
| 314 | #else
|
|---|
| 315 | string const & funame = funcname;
|
|---|
| 316 | if (dlhandle != NULL)
|
|---|
| 317 | f = (DlFunction)dlsym(dlhandle, funame.c_str());
|
|---|
| 318 | #endif
|
|---|
| 319 |
|
|---|
| 320 | if (f == NULL) cerr << "PDynLinkMgr::GetFunction(): Error linking " << funcname << endl;
|
|---|
| 321 | return(f);
|
|---|
| 322 | }
|
|---|
| 323 |
|
|---|
| 324 |
|
|---|
![(please configure the [header_logo] section in trac.ini)](/PI/chrome/site/your_project_logo.png){kind=logo}
