* generic/tcl.decls: [TIP #357]: First round of changes

* generic/tclDecls.h:		to export Tcl_LoadFile, Tcl_FindSymbol,
* generic/tclIOUtil.c:		and Tcl_FSUnloadFile to the public API.
* generic/tclInt.h:
* generic/tclLoad.c:
* generic/tclLoadNone.c:
* generic/tclStubInit.c:
* tests/fileSystem.test:
* tests/load.test:
* tests/unload.test:
* unix/tclLoadDl.c:
* unix/tclLoadDyld.c:
* unix/tclLoadNext.c:
* unix/tclLoadOSF.c:
* unix/tclLoadShl.c:
* unix/tclUnixPipe.c:
* win/Makefile.in:
* win/tclWinLoad.c:

1 files changed, 27 insertions, 8 deletions

diff --git a/unix/tclLoadNext.c b/unix/tclLoadNext.c
index 0f82593..35aeba4 100644
--- a/unix/tclLoadNext.c
+++ b/unix/tclLoadNext.c
@@ -9,12 +9,19 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclLoadNext.c,v 1.16 2010/03/11 15:02:33 nijtmans Exp $
+ * RCS: @(#) $Id: tclLoadNext.c,v 1.17 2010/04/02 21:21:06 kennykb Exp $
  */
 
 #include "tclInt.h"
 #include <mach-o/rld.h>
 #include <streams/streams.h>
+
+/* Static procedures defined within this file */
+
+static void* FindSymbol(Tcl_Interp* interp, Tcl_LoadHandle loadHandle,
+			const char* symbol);
+static void UnloadFile(Tcl_LoadHandle loadHandle);
+
 
 /*
  *----------------------------------------------------------------------
@@ -47,6 +54,7 @@ TclpDlopen(
 				 * function which should be used for this
 				 * file. */
 {
+    Tcl_LoadHandle newHandle;
     struct mach_header *header;
     char *fileName;
     char *files[2];
@@ -95,8 +103,12 @@ TclpDlopen(
     }
     NXCloseMemory(errorStream, NX_FREEBUFFER);
 
-    *loadHandle = (Tcl_LoadHandle)1; /* A dummy non-NULL value */
-    *unloadProcPtr = &TclpUnloadFile;
+    newHandle = (Tcl_LoadHandle) ckalloc(sizeof(*newHandle));
+    newHandle->clientData = (ClientData) 1;
+    newHandle->findSymbolProcPtr = &FindSymbol;
+    newHandle->unloadFileProcPtr = &UnloadFile;
+    *loadHandle = newHandle;
+    *unloadProcPtr = &UnloadFile;
 
     return TCL_OK;
 }
@@ -104,7 +116,7 @@ TclpDlopen(
 /*
  *----------------------------------------------------------------------
  *
- * TclpFindSymbol --
+ * FindSymbol --
  *
  *	Looks up a symbol, by name, through a handle associated with a
  *	previously loaded piece of code (shared library).
@@ -117,8 +129,8 @@ TclpDlopen(
  *----------------------------------------------------------------------
  */
 
-Tcl_PackageInitProc *
-TclpFindSymbol(
+static void*
+FindSymbol(
     Tcl_Interp *interp,
     Tcl_LoadHandle loadHandle,
     const char *symbol)
@@ -132,13 +144,19 @@ TclpFindSymbol(
 	strcat(sym, symbol);
 	rld_lookup(NULL, sym, (unsigned long *)&proc);
     }
+    if (proc == NULL && interp != NULL) {
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "cannot find symbol \"", symbol,
+			 "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, NULL);
+    }
     return proc;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclpUnloadFile --
+ * UnloadFile --
  *
  *	Unloads a dynamically loaded binary code file from memory. Code
  *	pointers in the formerly loaded file are no longer valid after calling
@@ -154,11 +172,12 @@ TclpFindSymbol(
  */
 
 void
-TclpUnloadFile(
+UnloadFile(
     Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
 				 * TclpDlopen(). The loadHandle is a token
 				 * that represents the loaded file. */
 {
+    ckfree((char*) loadHandle);
 }
 
 /*