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-rw-r--r--libguile/gc.c37
1 files changed, 29 insertions, 8 deletions
diff --git a/libguile/gc.c b/libguile/gc.c
index ba43df315..e912beaa6 100644
--- a/libguile/gc.c
+++ b/libguile/gc.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -608,6 +608,25 @@ scm_igc (const char *what)
/*
TODO: this hook should probably be moved to just before the mark,
since that's where the sweep is finished in lazy sweeping.
+
+ MDJ 030219 <djurfeldt@nada.kth.se>: No, probably not. The
+ original meaning implied at least two things: that it would be
+ called when
+
+ 1. the freelist is re-initialized (no evaluation possible, though)
+
+ and
+
+ 2. the heap is "fresh"
+ (it is well-defined what data is used and what is not)
+
+ Neither of these conditions would hold just before the mark phase.
+
+ Of course, the lazy sweeping has muddled the distinction between
+ scm_before_sweep_c_hook and scm_after_sweep_c_hook, but even if
+ there were no difference, it would still be useful to have two
+ distinct classes of hook functions since this can prevent some
+ bad interference when several modules adds gc hooks.
*/
scm_c_hook_run (&scm_after_sweep_c_hook, 0);
gc_end_stats ();
@@ -873,6 +892,15 @@ scm_getenv_int (const char *var, int def)
return res;
}
+void
+scm_storage_prehistory ()
+{
+ scm_c_hook_init (&scm_before_gc_c_hook, 0, SCM_C_HOOK_NORMAL);
+ scm_c_hook_init (&scm_before_mark_c_hook, 0, SCM_C_HOOK_NORMAL);
+ scm_c_hook_init (&scm_before_sweep_c_hook, 0, SCM_C_HOOK_NORMAL);
+ scm_c_hook_init (&scm_after_sweep_c_hook, 0, SCM_C_HOOK_NORMAL);
+ scm_c_hook_init (&scm_after_gc_c_hook, 0, SCM_C_HOOK_NORMAL);
+}
int
scm_init_storage ()
@@ -893,13 +921,6 @@ scm_init_storage ()
j = SCM_HEAP_SEG_SIZE;
-
- scm_c_hook_init (&scm_before_gc_c_hook, 0, SCM_C_HOOK_NORMAL);
- scm_c_hook_init (&scm_before_mark_c_hook, 0, SCM_C_HOOK_NORMAL);
- scm_c_hook_init (&scm_before_sweep_c_hook, 0, SCM_C_HOOK_NORMAL);
- scm_c_hook_init (&scm_after_sweep_c_hook, 0, SCM_C_HOOK_NORMAL);
- scm_c_hook_init (&scm_after_gc_c_hook, 0, SCM_C_HOOK_NORMAL);
-
/* Initialise the list of ports. */
scm_i_port_table = (scm_t_port **)
malloc (sizeof (scm_t_port *) * scm_i_port_table_room);