Merge branch 'master' into boehm-demers-weiser-gc

[bpt/guile.git] / libguile / gc.c

diff --git a/libguile/gc.c b/libguile/gc.c
index d8b27d2..bb39efd 100644 (file)
--- a/libguile/gc.c
+++ b/libguile/gc.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -15,11 +15,9 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define _GNU_SOURCE
-
 /* #define DEBUGINFO */
 
-#if HAVE_CONFIG_H
+#ifdef HAVE_CONFIG_H
 #  include <config.h>
 #endif
 
@@ -154,7 +152,7 @@ scm_assert_cell_valid (SCM cell)
       */
       if (scm_expensive_debug_cell_accesses_p)
        scm_i_expensive_validation_check (cell);
-      
+#if (SCM_DEBUG_MARKING_API == 0)
       if (!SCM_GC_MARK_P (cell))
        {
          fprintf (stderr,
@@ -164,7 +162,8 @@ scm_assert_cell_valid (SCM cell)
                    (unsigned long) SCM_UNPACK (cell));
          abort ();
        }
-
+#endif /* SCM_DEBUG_MARKING_API */
+      
       scm_i_cell_validation_already_running = 0;  /* re-enable */
     }
 }
@@ -222,21 +221,9 @@ unsigned long scm_mtrigger;
 
 /* GC Statistics Keeping
  */
-unsigned long scm_cells_allocated = 0;
 unsigned long scm_mallocated = 0;
-unsigned long scm_gc_cells_collected;
-unsigned long scm_gc_cells_collected_1 = 0; /* previous GC yield */
-unsigned long scm_gc_malloc_collected;
-unsigned long scm_gc_ports_collected;
-unsigned long scm_gc_time_taken = 0;
-static unsigned long t_before_gc;
-unsigned long scm_gc_mark_time_taken = 0;
-unsigned long scm_gc_times = 0;
-unsigned long scm_gc_cells_swept = 0;
-double scm_gc_cells_marked_acc = 0.;
-double scm_gc_cells_swept_acc = 0.;
-int scm_gc_cell_yield_percentage =0;
-int scm_gc_malloc_yield_percentage = 0;
+unsigned long scm_gc_ports_collected = 0;
+
 
 static unsigned long protected_obj_count = 0;
 
@@ -252,12 +239,12 @@ SCM_SYMBOL (sym_gc_time_taken, "gc-time-taken");
 SCM_SYMBOL (sym_gc_mark_time_taken, "gc-mark-time-taken");
 SCM_SYMBOL (sym_times, "gc-times");
 SCM_SYMBOL (sym_cells_marked, "cells-marked");
+SCM_SYMBOL (sym_cells_marked_conservatively, "cells-marked-conservatively");
 SCM_SYMBOL (sym_cells_swept, "cells-swept");
 SCM_SYMBOL (sym_malloc_yield, "malloc-yield");
 SCM_SYMBOL (sym_cell_yield, "cell-yield");
 SCM_SYMBOL (sym_protected_objects, "protected-objects");
-
-
+SCM_SYMBOL (sym_total_cells_allocated, "total-cells-allocated");
 
 
 /* Number of calls to SCM_NEWCELL since startup.  */
@@ -340,7 +327,7 @@ SCM_DEFINE (scm_gc_stats, "gc-stats", 0, 0, 0,
                scm_cons (sym_cells_swept,
                          scm_from_double (local_scm_gc_cells_swept)),
                scm_cons (sym_malloc_yield,
-                         scm_from_long(local_scm_gc_malloc_yield_percentage)),
+                         scm_from_long (local_scm_gc_malloc_yield_percentage)),
                scm_cons (sym_cell_yield,
                          scm_from_long (local_scm_gc_cell_yield_percentage)),
                scm_cons (sym_heap_segments, heap_segs),
@@ -359,6 +346,17 @@ SCM_DEFINE (scm_gc_stats, "gc-stats", 0, 0, 0,
 #undef FUNC_NAME
 
 
+SCM_DEFINE (scm_gc_dump, "gc-dump", 0, 0, 0,
+           (void),
+           "Dump information about the garbage collector's internal data "
+           "structures and memory usage to the standard output.")
+#define FUNC_NAME s_scm_gc_dump
+{
+  GC_dump ();
+
+  return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
 
 
 SCM_DEFINE (scm_object_address, "object-address", 1, 0, 0,
@@ -402,7 +400,6 @@ SCM_DEFINE (scm_gc, "gc", 0, 0, 0,
 #define FUNC_NAME s_scm_gc
 {
   scm_i_scm_pthread_mutex_lock (&scm_i_sweep_mutex);
-  scm_gc_running_p = 1;
   scm_i_gc ("call");
   /* njrev: It looks as though other places, e.g. scm_realloc,
      can call scm_i_gc without acquiring the sweep mutex.  Does this
@@ -411,7 +408,6 @@ SCM_DEFINE (scm_gc, "gc", 0, 0, 0,
      (e.g. scm_permobjs above in scm_gc_stats) by a critical section,
      not by the sweep mutex.  Shouldn't all the GC-relevant objects be
      protected in the same way? */
-  scm_gc_running_p = 0;
   scm_i_pthread_mutex_unlock (&scm_i_sweep_mutex);
   scm_c_hook_run (&scm_after_gc_c_hook, 0);
   return SCM_UNSPECIFIED;
@@ -518,7 +514,7 @@ scm_permanent_object (SCM obj)
 */
 
 /* Implementation note:  For every object X, there is a counter which
-   scm_gc_protect_object(X) increments and scm_gc_unprotect_object(X) decrements.
+   scm_gc_protect_object (X) increments and scm_gc_unprotect_object (X) decrements.
 */
 
 
@@ -641,10 +637,12 @@ void
 scm_storage_prehistory ()
 {
   GC_all_interior_pointers = 0;
+  GC_set_free_space_divisor (scm_getenv_int ("GC_FREE_SPACE_DIVISOR", 3));
 
   GC_INIT ();
 
-#ifdef SCM_I_GSC_USE_PTHREAD_THREADS
+#if (! ((defined GC_VERSION_MAJOR) && (GC_VERSION_MAJOR >= 7))) \
+    && (defined SCM_I_GSC_USE_PTHREAD_THREADS)
   /* When using GC 6.8, this call is required to initialize thread-local
      freelists (shouldn't be necessary with GC 7.0).  */
   GC_init ();
@@ -728,7 +726,7 @@ gc_async_thunk (void)
  */
 static void *
 mark_gc_async (void * hook_data SCM_UNUSED,
-              void *func_data SCM_UNUSED,
+              void *fn_data SCM_UNUSED,
               void *data SCM_UNUSED)
 {
   /* If cell access debugging is enabled, the user may choose to perform