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-rw-r--r--libguile/deprecated.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/libguile/deprecated.c b/libguile/deprecated.c
index c19d58b85..a41f45461 100644
--- a/libguile/deprecated.c
+++ b/libguile/deprecated.c
@@ -2694,6 +2694,55 @@ scm_sym2var (SCM sym, SCM proc, SCM definep)
}
#undef FUNC_NAME
+SCM
+scm_lookup_closure_module (SCM proc)
+{
+ scm_c_issue_deprecation_warning
+ ("Eval closures are deprecated. See \"Accessing Modules From C\" in\n"
+ "the manual, for replacements.");
+
+ if (scm_is_false (proc))
+ return scm_the_root_module ();
+ else if (SCM_EVAL_CLOSURE_P (proc))
+ return SCM_PACK (SCM_SMOB_DATA (proc));
+ else
+ /* FIXME: The `module' property is no longer set on eval closures, as it
+ introduced a circular reference that precludes garbage collection of
+ modules with the current weak hash table semantics (see
+ http://lists.gnu.org/archive/html/guile-devel/2009-01/msg00102.html and
+ http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/2465
+ for details). Since it doesn't appear to be used (only in this
+ function, which has 1 caller), we no longer extend
+ `set-module-eval-closure!' to set the `module' property. */
+ abort ();
+}
+
+SCM
+scm_module_lookup_closure (SCM module)
+{
+ scm_c_issue_deprecation_warning
+ ("Eval closures are deprecated. See \"Accessing Modules From C\" in\n"
+ "the manual, for replacements.");
+
+ if (scm_is_false (module))
+ return SCM_BOOL_F;
+ else
+ return SCM_MODULE_EVAL_CLOSURE (module);
+}
+
+SCM
+scm_current_module_lookup_closure ()
+{
+ scm_c_issue_deprecation_warning
+ ("Eval closures are deprecated. See \"Accessing Modules From C\" in\n"
+ "the manual, for replacements.");
+
+ if (scm_module_system_booted_p)
+ return scm_module_lookup_closure (scm_current_module ());
+ else
+ return SCM_BOOL_F;
+}
+