* works with the Windows "LoadLibrary" and "GetProcAddress"
* API for dynamic loading.
*
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * 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: @(#) $Id$
*/
-#include "tclInt.h"
-#include "tclPort.h"
+#include "tclWinInt.h"
\f
/*
*----------------------------------------------------------------------
*
- * TclLoadFile --
+ * TclpLoadFile --
*
* Dynamically loads a binary code file into memory and returns
* the addresses of two procedures within that file, if they
*
* Results:
* A standard Tcl completion code. If an error occurs, an error
- * message is left in interp->result.
+ * message is left in the interp's result.
*
* Side effects:
* New code suddenly appears in memory.
*/
int
-TclLoadFile(interp, fileName, sym1, sym2, proc1Ptr, proc2Ptr)
+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. */
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. */
{
HINSTANCE handle;
- char *buffer;
+ TCHAR *nativeName;
+ Tcl_DString ds;
- handle = TclWinLoadLibrary(fileName);
+ nativeName = Tcl_WinUtfToTChar(fileName, -1, &ds);
+ handle = (*tclWinProcs->loadLibraryProc)(nativeName);
+ Tcl_DStringFree(&ds);
+
+ *clientDataPtr = (ClientData) handle;
+
if (handle == NULL) {
- Tcl_AppendResult(interp, "couldn't load file \"", fileName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
+ DWORD lastError = GetLastError();
+#if 0
+ /*
+ * It would be ideal if the FormatMessage stuff worked better,
+ * but unfortunately it doesn't seem to want to...
+ */
+ LPTSTR lpMsgBuf;
+ char *buf;
+ int size;
+ size = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, lastError, 0,
+ (LPTSTR) &lpMsgBuf, 0, NULL);
+ buf = (char *) ckalloc((unsigned) TCL_INTEGER_SPACE + size + 1);
+ sprintf(buf, "%d %s", lastError, (char *)lpMsgBuf);
+#endif
+ Tcl_AppendResult(interp, "couldn't load library \"",
+ fileName, "\": ", (char *) NULL);
+ /*
+ * Check for possible DLL errors. This doesn't work quite right,
+ * because Windows seems to only return ERROR_MOD_NOT_FOUND for
+ * just about any problem, but it's better than nothing. It'd be
+ * even better if there was a way to get what DLLs
+ */
+ switch (lastError) {
+ case ERROR_MOD_NOT_FOUND:
+ case ERROR_DLL_NOT_FOUND:
+ Tcl_AppendResult(interp, "this library or a dependent library",
+ " could not be found in library path", (char *)
+ NULL);
+ break;
+ case ERROR_INVALID_DLL:
+ Tcl_AppendResult(interp, "this library or a dependent library",
+ " is damaged", (char *) NULL);
+ break;
+ case ERROR_DLL_INIT_FAILED:
+ Tcl_AppendResult(interp, "the library initialization",
+ " routine failed", (char *) NULL);
+ break;
+ default:
+ TclWinConvertError(lastError);
+ Tcl_AppendResult(interp, Tcl_PosixError(interp),
+ (char *) NULL);
+ }
return TCL_ERROR;
}
*proc1Ptr = (Tcl_PackageInitProc *) GetProcAddress(handle, sym1);
if (*proc1Ptr == NULL) {
- buffer = ckalloc(strlen(sym1)+2);
- buffer[0] = '_';
- strcpy(buffer+1, sym1);
- *proc1Ptr = (Tcl_PackageInitProc *) GetProcAddress(handle, buffer);
- ckfree(buffer);
+ Tcl_DStringAppend(&ds, "_", 1);
+ sym1 = Tcl_DStringAppend(&ds, sym1, -1);
+ *proc1Ptr = (Tcl_PackageInitProc *) GetProcAddress(handle, sym1);
+ Tcl_DStringFree(&ds);
}
*proc2Ptr = (Tcl_PackageInitProc *) GetProcAddress(handle, sym2);
if (*proc2Ptr == NULL) {
- buffer = ckalloc(strlen(sym2)+2);
- buffer[0] = '_';
- strcpy(buffer+1, sym2);
- *proc2Ptr = (Tcl_PackageInitProc *) GetProcAddress(handle, buffer);
- ckfree(buffer);
+ Tcl_DStringAppend(&ds, "_", 1);
+ sym2 = Tcl_DStringAppend(&ds, sym2, -1);
+ *proc2Ptr = (Tcl_PackageInitProc *) GetProcAddress(handle, sym2);
+ Tcl_DStringFree(&ds);
}
-
return TCL_OK;
}
\f
/*
*----------------------------------------------------------------------
*
+ * 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. */
+{
+ HINSTANCE handle;
+
+ handle = (HINSTANCE) clientData;
+ FreeLibrary(handle);
+}
+\f
+/*
+ *----------------------------------------------------------------------
+ *
* TclGuessPackageName --
*
* If the "load" command is invoked without providing a package
{
return 0;
}
+
+
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