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Diffstat (limited to 'unix/tclLoadDl.c')
| -rw-r--r-- | unix/tclLoadDl.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/unix/tclLoadDl.c b/unix/tclLoadDl.c deleted file mode 100644 index 2a868d8..0000000 --- a/unix/tclLoadDl.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * tclLoadDl.c -- - * - * This procedure provides a version of the TclLoadFile that - * works with the "dlopen" and "dlsym" library procedures for - * dynamic loading. - * - * Copyright (c) 1995-1997 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * RCS: @(#) $Id: tclLoadDl.c,v 1.3 1999/04/16 00:48:04 stanton Exp $ - */ - -#include "tclInt.h" -#ifdef NO_DLFCN_H -# include "../compat/dlfcn.h" -#else -# include <dlfcn.h> -#endif - -/* - * In some systems, like SunOS 4.1.3, the RTLD_NOW flag isn't defined - * and this argument to dlopen must always be 1. The RTLD_GLOBAL - * flag is needed on some systems (e.g. SCO and UnixWare) but doesn't - * exist on others; if it doesn't exist, set it to 0 so it has no effect. - */ - -#ifndef RTLD_NOW -# define RTLD_NOW 1 -#endif - -#ifndef RTLD_GLOBAL -# define RTLD_GLOBAL 0 -#endif - -/* - *--------------------------------------------------------------------------- - * - * TclpLoadFile -- - * - * Dynamically loads a binary code file into memory and returns - * the addresses of two procedures within that file, if they - * are defined. - * - * Results: - * A standard Tcl completion code. If an error occurs, an error - * message is left in the interp's result. *proc1Ptr and *proc2Ptr - * are filled in with the addresses of the symbols given by - * *sym1 and *sym2, or NULL if those symbols can't be found. - * - * Side effects: - * New code suddenly appears in memory. - * - *--------------------------------------------------------------------------- - */ - -int -TclpLoadFile(interp, fileName, sym1, sym2, proc1Ptr, proc2Ptr, clientDataPtr) - Tcl_Interp *interp; /* Used for error reporting. */ - char *fileName; /* Name of the file containing the desired - * code. */ - char *sym1, *sym2; /* Names of two procedures to look up in - * the file's symbol table. */ - Tcl_PackageInitProc **proc1Ptr, **proc2Ptr; - /* Where to return the addresses corresponding - * to sym1 and sym2. */ - ClientData *clientDataPtr; /* Filled with token for dynamically loaded - * file which will be passed back to - * TclpUnloadFile() to unload the file. */ -{ - VOID *handle; - Tcl_DString newName, ds; - char *native; - - native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds); - handle = dlopen(native, RTLD_NOW | RTLD_GLOBAL); /* INTL: Native. */ - Tcl_DStringFree(&ds); - - *clientDataPtr = (ClientData) handle; - - if (handle == NULL) { - Tcl_AppendResult(interp, "couldn't load file \"", fileName, - "\": ", dlerror(), (char *) NULL); - return TCL_ERROR; - } - - /* - * Some platforms still add an underscore to the beginning of symbol - * names. If we can't find a name without an underscore, try again - * with the underscore. - */ - - native = Tcl_UtfToExternalDString(NULL, sym1, -1, &ds); - *proc1Ptr = (Tcl_PackageInitProc *) dlsym(handle, /* INTL: Native. */ - native); - if (*proc1Ptr == NULL) { - Tcl_DStringInit(&newName); - Tcl_DStringAppend(&newName, "_", 1); - native = Tcl_DStringAppend(&newName, native, -1); - *proc1Ptr = (Tcl_PackageInitProc *) dlsym(handle, /* INTL: Native. */ - native); - Tcl_DStringFree(&newName); - } - Tcl_DStringFree(&ds); - - native = Tcl_UtfToExternalDString(NULL, sym2, -1, &ds); - *proc2Ptr = (Tcl_PackageInitProc *) dlsym(handle, /* INTL: Native. */ - native); - if (*proc2Ptr == NULL) { - Tcl_DStringInit(&newName); - Tcl_DStringAppend(&newName, "_", 1); - native = Tcl_DStringAppend(&newName, native, -1); - *proc2Ptr = (Tcl_PackageInitProc *) dlsym(handle, /* INTL: Native. */ - native); - Tcl_DStringFree(&newName); - } - Tcl_DStringFree(&ds); - - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * TclpUnloadFile -- - * - * Unloads a dynamically loaded binary code file from memory. - * Code pointers in the formerly loaded file are no longer valid - * after calling this function. - * - * Results: - * None. - * - * Side effects: - * Code removed from memory. - * - *---------------------------------------------------------------------- - */ - -void -TclpUnloadFile(clientData) - ClientData clientData; /* ClientData returned by a previous call - * to TclpLoadFile(). The clientData is - * a token that represents the loaded - * file. */ -{ - VOID *handle; - - handle = (VOID *) clientData; - dlclose(handle); -} - -/* - *---------------------------------------------------------------------- - * - * TclGuessPackageName -- - * - * If the "load" command is invoked without providing a package - * name, this procedure is invoked to try to figure it out. - * - * Results: - * Always returns 0 to indicate that we couldn't figure out a - * package name; generic code will then try to guess the package - * from the file name. A return value of 1 would have meant that - * we figured out the package name and put it in bufPtr. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -int -TclGuessPackageName(fileName, bufPtr) - char *fileName; /* Name of file containing package (already - * translated to local form if needed). */ - Tcl_DString *bufPtr; /* Initialized empty dstring. Append - * package name to this if possible. */ -{ - return 0; -} |