Remove tests and shims for pre-7.2 bdw-gc.

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

diff --git a/libguile/gc.c b/libguile/gc.c
index c03c239..5a14fb7 100644 (file)
--- a/libguile/gc.c
+++ b/libguile/gc.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006,
+ *   2008, 2009, 2010, 2011, 2012, 2013 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 License
@@ -27,6 +28,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <string.h>
+#include <stdlib.h>
 #include <math.h>
 
 #ifdef __ia64__
@@ -46,7 +48,6 @@ extern unsigned long * __libc_ia64_register_backing_store_base;
 #include "libguile/root.h"
 #include "libguile/strings.h"
 #include "libguile/vectors.h"
-#include "libguile/weaks.h"
 #include "libguile/hashtab.h"
 #include "libguile/tags.h"
 
@@ -65,10 +66,6 @@ extern unsigned long * __libc_ia64_register_backing_store_base;
 #include "libguile/debug-malloc.h"
 #endif
 
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -83,14 +80,10 @@ int scm_expensive_debug_cell_accesses_p = 0;
  */
 int scm_debug_cells_gc_interval = 0;
 
-#if SCM_ENABLE_DEPRECATED == 1
 /* Hash table that keeps a reference to objects the user wants to protect from
-   garbage collection.  It could arguably be private but applications have come
-   to rely on it (e.g., Lilypond 2.13.9).  */
-SCM scm_protects;
-#else
+   garbage collection.  */
 static SCM scm_protects;
-#endif
+
 
 #if (SCM_DEBUG_CELL_ACCESSES == 1)
 
@@ -195,31 +188,6 @@ SCM_DEFINE (scm_set_debug_cell_accesses_x, "set-debug-cell-accesses!", 1, 0, 0,
 
 \f
 
-/* Compatibility.  */
-
-#ifndef HAVE_GC_GET_HEAP_USAGE_SAFE
-static void
-GC_get_heap_usage_safe (GC_word *pheap_size, GC_word *pfree_bytes,
-                        GC_word *punmapped_bytes, GC_word *pbytes_since_gc,
-                        GC_word *ptotal_bytes)
-{
-  *pheap_size = GC_get_heap_size ();
-  *pfree_bytes = GC_get_free_bytes ();
-  *punmapped_bytes = GC_get_unmapped_bytes ();
-  *pbytes_since_gc = GC_get_bytes_since_gc ();
-  *ptotal_bytes = GC_get_total_bytes ();
-}
-#endif
-
-#ifndef HAVE_GC_GET_FREE_SPACE_DIVISOR
-static GC_word
-GC_get_free_space_divisor (void)
-{
-  return GC_free_space_divisor;
-}
-#endif
-
-\f
 /* Hooks.  */
 scm_t_c_hook scm_before_gc_c_hook;
 scm_t_c_hook scm_before_mark_c_hook;
@@ -231,6 +199,10 @@ scm_t_c_hook scm_after_gc_c_hook;
 static void
 run_before_gc_c_hook (void)
 {
+  if (!SCM_I_CURRENT_THREAD)
+    /* GC while a thread is spinning up; punt.  */
+    return;
+
   scm_c_hook_run (&scm_before_gc_c_hook, NULL);
 }
 
@@ -310,7 +282,7 @@ SCM_DEFINE (scm_gc_stats, "gc-stats", 0, 0, 0,
 
   GC_get_heap_usage_safe (&heap_size, &free_bytes, &unmapped_bytes,
                           &bytes_since_gc, &total_bytes);
-  gc_times = GC_gc_no;
+  gc_times = GC_get_gc_no ();
 
   answer =
     scm_list_n (scm_cons (sym_gc_time_taken, scm_from_long (gc_time_taken)),
@@ -384,6 +356,9 @@ SCM_DEFINE (scm_gc, "gc", 0, 0, 0,
 #define FUNC_NAME s_scm_gc
 {
   scm_i_gc ("call");
+  /* If you're calling scm_gc(), you probably want synchronous
+     finalization.  */
+  GC_invoke_finalizers ();
   return SCM_UNSPECIFIED;
 }
 #undef FUNC_NAME
@@ -391,9 +366,6 @@ SCM_DEFINE (scm_gc, "gc", 0, 0, 0,
 void
 scm_i_gc (const char *what)
 {
-#ifndef HAVE_GC_SET_START_CALLBACK
-  run_before_gc_c_hook ();
-#endif
   GC_gcollect ();
 }
 
@@ -611,11 +583,13 @@ scm_getenv_int (const char *var, int def)
 void
 scm_storage_prehistory ()
 {
-  GC_all_interior_pointers = 0;
+  GC_set_all_interior_pointers (0);
+
   free_space_divisor = scm_getenv_int ("GC_FREE_SPACE_DIVISOR", 3);
   minimum_free_space_divisor = free_space_divisor;
   target_free_space_divisor = free_space_divisor;
   GC_set_free_space_divisor (free_space_divisor);
+  GC_set_finalize_on_demand (1);
 
   GC_INIT ();
 
@@ -948,16 +922,16 @@ scm_i_tag_name (scm_t_bits tag)
       return "foreign";
     case scm_tc7_hashtable:
       return "hashtable";
+    case scm_tc7_weak_set:
+      return "weak-set";
+    case scm_tc7_weak_table:
+      return "weak-table";
     case scm_tc7_fluid:
       return "fluid";
     case scm_tc7_dynamic_state:
       return "dynamic state";
     case scm_tc7_frame:
       return "frame";
-    case scm_tc7_objcode:
-      return "objcode";
-    case scm_tc7_vm:
-      return "vm";
     case scm_tc7_vm_cont:
       return "vm continuation";
     case scm_tc7_wvect:
@@ -1024,14 +998,15 @@ scm_init_gc ()
                                                     after_gc_async_thunk),
                                   SCM_BOOL_F);
 
-  scm_c_hook_add (&scm_before_gc_c_hook, adjust_gc_frequency, NULL, 0);
   scm_c_hook_add (&scm_before_gc_c_hook, queue_after_gc_hook, NULL, 0);
   scm_c_hook_add (&scm_before_gc_c_hook, start_gc_timer, NULL, 0);
   scm_c_hook_add (&scm_after_gc_c_hook, accumulate_gc_timer, NULL, 0);
 
-#ifdef HAVE_GC_SET_START_CALLBACK
+  /* GC_get_heap_usage does not take a lock, and so can run in the GC
+     start hook.  */
+  scm_c_hook_add (&scm_before_gc_c_hook, adjust_gc_frequency, NULL, 0);
+
   GC_set_start_callback (run_before_gc_c_hook);
-#endif
 
 #include "libguile/gc.x"
 }