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Diffstat (limited to 'unix/tclLoadDld.c')
| -rw-r--r-- | unix/tclLoadDld.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/unix/tclLoadDld.c b/unix/tclLoadDld.c deleted file mode 100644 index fe2f8fc..0000000 --- a/unix/tclLoadDld.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * tclLoadDld.c -- - * - * This procedure provides a version of the TclLoadFile that works with - * the "dld_link" and "dld_get_func" library procedures for dynamic - * loading. It has been tested on Linux 1.1.95 and dld-3.2.7. This file - * probably isn't needed anymore, since it makes more sense to use - * "dl_open" etc. - * - * 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: tclLoadDld.c,v 1.13 2005/07/19 13:37:18 dkf Exp $ - */ - -#include "tclInt.h" -#include "dld.h" - -/* - * In some systems, like SunOS 4.1.3, the RTLD_NOW flag isn't defined and this - * argument to dlopen must always be 1. - */ - -#ifndef RTLD_NOW -# define RTLD_NOW 1 -#endif - -/* - *---------------------------------------------------------------------- - * - * TclpDlopen -- - * - * Dynamically loads a binary code file into memory and returns a handle - * to the new code. - * - * Results: - * A standard Tcl completion code. If an error occurs, an error message - * is left in the interp's result. - * - * Side effects: - * New code suddenly appears in memory. - * - *---------------------------------------------------------------------- - */ - -int -TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr) - Tcl_Interp *interp; /* Used for error reporting. */ - Tcl_Obj *pathPtr; /* Name of the file containing the desired - * code (UTF-8). */ - Tcl_LoadHandle *loadHandle; /* Filled with token for dynamically loaded - * file which will be passed back to - * (*unloadProcPtr)() to unload the file. */ - Tcl_FSUnloadFileProc **unloadProcPtr; - /* Filled with address of Tcl_FSUnloadFileProc - * function which should be used for this - * file. */ -{ - static int firstTime = 1; - int returnCode; - char *fileName; - CONST char *native; - - /* - * The dld package needs to know the pathname to the tcl binary. If - * that's not known, return an error. - */ - - if (firstTime) { - if (tclExecutableName == NULL) { - Tcl_SetResult(interp, - "don't know name of application binary file, so can't initialize dynamic loader", - TCL_STATIC); - return TCL_ERROR; - } - returnCode = dld_init(tclExecutableName); - if (returnCode != 0) { - Tcl_AppendResult(interp, - "initialization failed for dynamic loader: ", - dld_strerror(returnCode), (char *) NULL); - return TCL_ERROR; - } - firstTime = 0; - } - - fileName = Tcl_GetString(pathPtr); - - /* - * First try the full path the user gave us. This is particularly - * important if the cwd is inside a vfs, and we are trying to load using a - * relative path. - */ - - native = Tcl_FSGetNativePath(pathPtr); - returnCode = dld_link(native); - - if (returnCode != 0) { - Tcl_DString ds; - native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds); - returnCode = dld_link(native); - Tcl_DStringFree(&ds); - } - - if (returnCode != 0) { - Tcl_AppendResult(interp, "couldn't load file \"", fileName, "\": ", - dld_strerror(returnCode), (char *) NULL); - return TCL_ERROR; - } - *loadHandle = (Tcl_LoadHandle) strcpy( - (char *) ckalloc((unsigned) (strlen(fileName) + 1)), fileName); - *unloadProcPtr = &TclpUnloadFile; - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * TclpFindSymbol -- - * - * Looks up a symbol, by name, through a handle associated with a - * previously loaded piece of code (shared library). - * - * Results: - * Returns a pointer to the function associated with 'symbol' if it is - * found. Otherwise returns NULL and may leave an error message in the - * interp's result. - * - *---------------------------------------------------------------------- - */ - -Tcl_PackageInitProc* -TclpFindSymbol(interp, loadHandle, symbol) - Tcl_Interp *interp; - Tcl_LoadHandle loadHandle; - CONST char *symbol; -{ - return (Tcl_PackageInitProc *) dld_get_func(symbol); -} - -/* - *---------------------------------------------------------------------- - * - * 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(loadHandle) - Tcl_LoadHandle loadHandle; /* loadHandle returned by a previous call to - * TclpDlopen(). The loadHandle is a token - * that represents the loaded file. */ -{ - char *fileName; - - handle = (char *) loadHandle; - dld_unlink_by_file(handle, 0); - ckfree(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) - CONST 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; -} - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ |