+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
+1999-07-01 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
+
+ * configure.in, acconfig.h, gutils.c: Added a g_memmove
+ replacement for platforms without memmove, where bcopy can't
+ handle overlapping copies and the corresponding checks, which is
+ taken form the PERL Configure routine.
+
+ * glib.h: Updated the commentary about g_memmove to be right and
+ more GLib-like.
+
+ * configure.in: Removed test for rand_r, as it isn't used anymore.
+
1999-06-30 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, grand.c: Finally removed the g_random_normal and
#undef HAVE_VALUES_H
#undef HAVE_WCHAR_H
#undef HAVE_WCTYPE_H
+#undef HAVE_WORKING_BCOPY
#undef NO_FD_SET
#undef NO_SYS_ERRLIST
# Check for some functions
AC_CHECK_FUNCS(lstat strerror strsignal memmove vsnprintf strcasecmp strncasecmp poll)
+# Check if bcopy can be used for overlapping copies, if memmove isn't found.
+# The check is borrowed from the PERL Configure script.
+if test "$ac_cv_func_memmove" != "yes"; then
+ AC_CACHE_CHECK(whether bcopy can handle overlapping copies,
+ glib_cv_working_bcopy,[AC_TRY_RUN([
+ int main() {
+ char buf[128], abc[128], *b;
+ int len, off, align;
+ bcopy("abcdefghijklmnopqrstuvwxyz0123456789", abc, 36);
+ for (align = 7; align >= 0; align--) {
+ for (len = 36; len; len--) {
+ b = buf+align; bcopy(abc, b, len);
+ for (off = 1; off <= len; off++) {
+ bcopy(b, b+off, len); bcopy(b+off, b, len);
+ if (bcmp(b, abc, len)) return(1);
+ }
+ }
+ }
+ return(0);
+ }],glib_cv_working_bcopy=yes,glib_cv_working_bcopy=no)])
+ if test "$glib_cv_working_bcopy" == "yes"; then
+ AC_DEFINE(HAVE_WORKING_BCOPY)
+ fi
+fi
+
# Check for sys_errlist
AC_MSG_CHECKING(for sys_errlist)
AC_TRY_LINK(, [
# to always be linked with the thread libs on some platforms.
# LIBS="$LIBS $G_THREAD_LIBS"
CFLAGS="$CFLAGS $G_THREAD_CFLAGS"
- AC_CHECK_FUNCS(localtime_r rand_r)
+ AC_CHECK_FUNCS(localtime_r)
if test "$ac_cv_header_pwd_h" = "yes"; then
AC_MSG_CHECKING([for getpwuid_r])
AC_CACHE_VAL(ac_cv_func_getpwuid_r,
glib_memmove='
#define g_memmove(d,s,n) G_STMT_START { memmove ((d), (s), (n)); } G_STMT_END'
;;
-*)
+x$glib_cv_working_bcopy)
glib_memmove="
-/* We make the assumption that if memmove isn't available, then
- * bcopy will do the job. This isn't safe everywhere. (bcopy can't
- * necessarily handle overlapping copies) */
+/* memmove isn't available, but bcopy can copy overlapping memory regions */
#define g_memmove(d,s,n) G_STMT_START { bcopy ((s), (d), (n)); } G_STMT_END"
;;
+*)
+ glib_memmove="
+/* memmove isn't found and bcopy can't copy overlapping memory regions,
+ * so we have to roll our own copy routine. */
+void g_memmove (void* dest, const void * src, unsigned long len);"
+ ;;
esac
glib_defines="
* To register hooks which are executed on exit().
* Usually a wrapper for STDC atexit.
*
- * void *g_memmove(void *dest, const void *src, guint count);
+ * void g_memmove(gpointer dest, gconstpointer void *src, gulong count);
* A wrapper for STDC memmove, or an implementation, if memmove doesn't
* exist. The prototype looks like the above, give or take a const,
* or size_t.
* To register hooks which are executed on exit().
* Usually a wrapper for STDC atexit.
*
- * void *g_memmove(void *dest, const void *src, guint count);
+ * void g_memmove(gpointer dest, gconstpointer void *src, gulong count);
* A wrapper for STDC memmove, or an implementation, if memmove doesn't
* exist. The prototype looks like the above, give or take a const,
* or size_t.
const guint glib_interface_age = GLIB_INTERFACE_AGE;
const guint glib_binary_age = GLIB_BINARY_AGE;
+#if !defined (HAVE_MEMMOVE) && !defined (HAVE_WORKING_BCOPY)
+void
+g_memmove (gpointer dest, gconstpointer src, gulong len)
+{
+ gchar* destptr = dest;
+ const gchar* srcptr = src;
+ if (src + len < dest || dest + len < src)
+ {
+ bcopy (src, dest, len);
+ return;
+ }
+ else if (dest <= src)
+ {
+ while (len--)
+ *(destptr++) = *(srcptr++);
+ }
+ else
+ {
+ destptr += len;
+ srcptr += len;
+ while (len--)
+ *(--destptr) = *(--srcptr);
+ }
+}
+#endif /* !HAVE_MEMMOVE && !HAVE_WORKING_BCOPY */
+
void
g_atexit (GVoidFunc func)
{
const guint glib_interface_age = GLIB_INTERFACE_AGE;
const guint glib_binary_age = GLIB_BINARY_AGE;
+#if !defined (HAVE_MEMMOVE) && !defined (HAVE_WORKING_BCOPY)
+void
+g_memmove (gpointer dest, gconstpointer src, gulong len)
+{
+ gchar* destptr = dest;
+ const gchar* srcptr = src;
+ if (src + len < dest || dest + len < src)
+ {
+ bcopy (src, dest, len);
+ return;
+ }
+ else if (dest <= src)
+ {
+ while (len--)
+ *(destptr++) = *(srcptr++);
+ }
+ else
+ {
+ destptr += len;
+ srcptr += len;
+ while (len--)
+ *(--destptr) = *(--srcptr);
+ }
+}
+#endif /* !HAVE_MEMMOVE && !HAVE_WORKING_BCOPY */
+
void
g_atexit (GVoidFunc func)
{
projects / platform / upstream / glib.git / commitdiff