Update.

2000-08-30  Ulrich Drepper  <drepper@redhat.com>

	* iconvdata/Makefile (tests): Add tst-loading.
	* iconvdata/tst-loading.c: New file.

ChangeLog

@@ -1,3 +1,8 @@
+2000-08-30  Ulrich Drepper  <drepper@redhat.com>
+
+	* iconvdata/Makefile (tests): Add tst-loading.
+	* iconvdata/tst-loading.c: New file.
+
 2000-08-29  Bruno Haible  <haible@clisp.cons.org>
 
 	* stdio-common/vfscanf.c (_IO_vfscanf): Back out last ungetc change.

iconvdata/Makefile

@@ -49,7 +49,7 @@ modules	:= ISO8859-1 ISO8859-2 ISO8859-3 ISO8859-4 ISO8859-5		 \
 
 modules.so := $(addsuffix .so, $(modules))
 
-tests = bug-iconv1 bug-iconv2
+tests = bug-iconv1 bug-iconv2 tst-loading
 
 include ../Makeconfig
 

iconvdata/tst-loading.c

@@ -0,0 +1,184 @@
+/* Tests for loading and unloading of iconv modules.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <iconv.h>
+#include <mcheck.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+/* How many load/unload operations do we do.  */
+#define TEST_ROUNDS	5000
+
+
+enum state { unloaded, loaded };
+
+struct
+{
+  const char *name;
+  enum state state;
+  iconv_t cd;
+} modules[] =
+{
+#define MODULE(Name) { .name = #Name, .state = unloaded }
+  MODULE (ISO-8859-1),
+  MODULE (ISO-8859-2),
+  MODULE (ISO-8859-3),
+  MODULE (ISO-8859-4),
+  MODULE (ISO-8859-5),
+  MODULE (ISO-8859-6),
+  MODULE (ISO-8859-15),
+  MODULE (EUC-JP),
+  MODULE (EUC-KR),
+  MODULE (EUC-CN),
+  MODULE (EUC-TW),
+  MODULE (SJIS),
+  MODULE (UHC),
+  MODULE (KOI8-R),
+  MODULE (BIG5),
+  MODULE (BIG5HKSCS)
+};
+#define nmodules (sizeof (modules) / sizeof (modules[0]))
+
+
+/* The test data.  */
+static const char inbuf[] = "\
+The first step is the function to create a handle.
+
+ - Function: iconv_t iconv_open (const char *TOCODE, const char
+          *FROMCODE)
+     The `iconv_open' function has to be used before starting a
+     conversion.  The two parameters this function takes determine the
+     source and destination character set for the conversion and if the
+     implementation has the possibility to perform such a conversion the
+     function returns a handle.
+
+     If the wanted conversion is not available the function returns
+     `(iconv_t) -1'.  In this case the global variable `errno' can have
+     the following values:
+
+    `EMFILE'
+          The process already has `OPEN_MAX' file descriptors open.
+
+    `ENFILE'
+          The system limit of open file is reached.
+
+    `ENOMEM'
+          Not enough memory to carry out the operation.
+
+    `EINVAL'
+          The conversion from FROMCODE to TOCODE is not supported.
+
+     It is not possible to use the same descriptor in different threads
+     to perform independent conversions.  Within the data structures
+     associated with the descriptor there is information about the
+     conversion state.  This must not be messed up by using it in
+     different conversions.
+
+     An `iconv' descriptor is like a file descriptor as for every use a
+     new descriptor must be created.  The descriptor does not stand for
+     all of the conversions from FROMSET to TOSET.
+
+     The GNU C library implementation of `iconv_open' has one
+     significant extension to other implementations.  To ease the
+     extension of the set of available conversions the implementation
+     allows storing the necessary files with data and code in
+     arbitrarily many directories.  How this extension has to be
+     written will be explained below (*note glibc iconv
+     Implementation::).  Here it is only important to say that all
+     directories mentioned in the `GCONV_PATH' environment variable are
+     considered if they contain a file `gconv-modules'.  These
+     directories need not necessarily be created by the system
+     administrator.  In fact, this extension is introduced to help users
+     writing and using their own, new conversions.  Of course this does
+     not work for security reasons in SUID binaries; in this case only
+     the system directory is considered and this normally is
+     `PREFIX/lib/gconv'.  The `GCONV_PATH' environment variable is
+     examined exactly once at the first call of the `iconv_open'
+     function.  Later modifications of the variable have no effect.
+";
+
+
+int
+main (void)
+{
+  int count = TEST_ROUNDS;
+  int result = 0;
+
+  mtrace ();
+
+  /* Just a seed.  */
+  srandom (TEST_ROUNDS);
+
+  while (count--)
+    {
+      int idx = random () % nmodules;
+
+      if (modules[idx].state == unloaded)
+	{
+	  char outbuf[10000];
+	  char *inptr = (char *) inbuf;
+	  size_t insize = sizeof (inbuf) - 1;
+	  char *outptr = outbuf;
+	  size_t outsize = sizeof (outbuf);
+
+	  /* Load the module and do the conversion.  */
+	  modules[idx].cd = iconv_open ("UTF-8", modules[idx].name);
+
+	  if (modules[idx].cd == (iconv_t) -1)
+	    {
+	      printf ("opening of %s failed: %m\n", modules[idx].name);
+	      result = 1;
+	      break;
+	    }
+
+	  modules[idx].state = loaded;
+
+	  /* Now a simple test.  */
+	  if (iconv (modules[idx].cd, &inptr, &insize, &outptr, &outsize) != 0
+	      || *inptr != '\0')
+	    {
+	      printf ("conversion with %s failed\n", modules[idx].name);
+	      result = 1;
+	    }
+	}
+      else
+	{
+	  /* Unload the module.  */
+	  if (iconv_close (modules[idx].cd) != 0)
+	    {
+	      printf ("closing of %s failed: %m\n", modules[idx].name);
+	      result = 1;
+	      break;
+	    }
+
+	  modules[idx].state = unloaded;
+	}
+    }
+
+  for (count = 0; count < nmodules; ++count)
+    if (modules[count].state == loaded && iconv_close (modules[count].cd) != 0)
+      {
+	printf ("closing of %s failed: %m\n", modules[count].name);
+	result = 1;
+      }
+
+  return result;
+}