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authoroehhar <harald.oehlmann@elmicron.de>2015-05-31 16:20:06 (GMT)
committeroehhar <harald.oehlmann@elmicron.de>2015-05-31 16:20:06 (GMT)
commitf50357637950d7ee913d02d98cfa78ca49bd0e09 (patch)
treed53d085f4f5d210127092023f92633ef57a090f6 /unix/dltest/pkgooa.c
parentf9c9b71cd327714fabe221f91e2f9af29fdd9b85 (diff)
parent32461a99d3dc5741caf2f1c282ca57fe06220b79 (diff)
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+/*
+ * pkgooa.c --
+ *
+ * This file contains a simple Tcl package "pkgooa" that is intended for
+ * testing the Tcl dynamic loading facilities.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#undef STATIC_BUILD
+#include "tclOO.h"
+#include <string.h>
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgooa_StubsOKObjCmd --
+ *
+ * This procedure is invoked to process the "pkgooa_stubsok" Tcl command.
+ * It gives 1 if stubs are used correctly, 0 if stubs are not OK.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+Pkgooa_StubsOKObjCmd(
+ ClientData dummy, /* Not used. */
+ Tcl_Interp *interp, /* Current interpreter. */
+ int objc, /* Number of arguments. */
+ Tcl_Obj *const objv[]) /* Argument objects. */
+{
+ if (objc != 1) {
+ Tcl_WrongNumArgs(interp, 1, objv, "");
+ return TCL_ERROR;
+ }
+ Tcl_SetObjResult(interp, Tcl_NewIntObj(
+ Tcl_CopyObjectInstance == tclOOStubsPtr->tcl_CopyObjectInstance));
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pkgooa_Init --
+ *
+ * This is a package initialization procedure, which is called by Tcl
+ * when this package is to be added to an interpreter.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void *tclOOIntStubsPtr;
+
+static TclOOStubs stubsCopy = {
+ TCL_STUB_MAGIC,
+ NULL,
+ /* It doesn't really matter what implementation of
+ * Tcl_CopyObjectInstance is put in the "pseudo"
+ * stub table, since the test-case never actually
+ * calls this function. All that matters is that it's
+ * a function with a different memory address than
+ * the real Tcl_CopyObjectInstance function in Tcl. */
+ (Tcl_Object (*) (Tcl_Interp *, Tcl_Object, const char *,
+ const char *t)) Pkgooa_StubsOKObjCmd
+ /* More entries could be here, but those are not used
+ * for this test-case. So, being NULL is OK. */
+};
+
+extern DLLEXPORT int
+Pkgooa_Init(
+ Tcl_Interp *interp) /* Interpreter in which the package is to be
+ * made available. */
+{
+ int code;
+
+ /* Any TclOO extension which uses stubs, calls
+ * both Tcl_InitStubs and Tcl_OOInitStubs() and
+ * does not use any Tcl 8.6 features should be
+ * loadable in Tcl 8.5 as well, provided the
+ * TclOO extension (for Tcl 8.5) is installed.
+ * This worked in Tcl 8.6.0, and is expected
+ * to keep working in all future Tcl 8.x releases.
+ */
+ if (Tcl_InitStubs(interp, "8.5", 0) == NULL) {
+ return TCL_ERROR;
+ }
+ if (tclStubsPtr == NULL) {
+ Tcl_AppendResult(interp, "Tcl stubs are not inialized, "
+ "did you compile using -DUSE_TCL_STUBS? ");
+ return TCL_ERROR;
+ }
+ if (Tcl_OOInitStubs(interp) == NULL) {
+ return TCL_ERROR;
+ }
+ if (tclOOStubsPtr == NULL) {
+ Tcl_AppendResult(interp, "TclOO stubs are not inialized");
+ return TCL_ERROR;
+ }
+ if (tclOOIntStubsPtr == NULL) {
+ Tcl_AppendResult(interp, "TclOO internal stubs are not inialized");
+ return TCL_ERROR;
+ }
+
+ /* Test case for Bug [f51efe99a7].
+ *
+ * Let tclOOStubsPtr point to an alternate stub table
+ * (with only a single function, that's enough for
+ * this test). This way, the function "pkgooa_stubsok"
+ * can check whether the TclOO function calls really
+ * use the stub table, or only pretend to.
+ *
+ * On platforms without backlinking (Windows, Cygwin,
+ * AIX), this code doesn't even compile without using
+ * stubs, but on UNIX ELF systems, the problem is
+ * less visible.
+ */
+
+ tclOOStubsPtr = &stubsCopy;
+
+ code = Tcl_PkgProvide(interp, "Pkgooa", "1.0");
+ if (code != TCL_OK) {
+ return code;
+ }
+ Tcl_CreateObjCommand(interp, "pkgooa_stubsok", Pkgooa_StubsOKObjCmd, NULL, NULL);
+ return TCL_OK;
+}