* boehm-gc.c: GC implementation using either the installed or included Boehm GC.
*
* Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
- * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
+ * Copyright 2004-2011 Novell, Inc (http://www.novell.com)
+ * Copyright 2011-2012 Xamarin, Inc (http://www.xamarin.com)
*/
#include "config.h"
#include "private/pthread_support.h"
#endif
+#if defined(PLATFORM_MACOSX) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
+void *pthread_get_stackaddr_np(pthread_t);
+#endif
+
#define GC_NO_DESCRIPTOR ((gpointer)(0 | GC_DS_LENGTH))
/*Boehm max heap cannot be smaller than 16MB*/
#define MIN_BOEHM_MAX_HEAP_SIZE_IN_MB 16
* we used to do this only when running on valgrind,
* but it happens also in other setups.
*/
-#if defined(HAVE_PTHREAD_GETATTR_NP) && defined(HAVE_PTHREAD_ATTR_GETSTACK)
+#if defined(HAVE_PTHREAD_GETATTR_NP) && defined(HAVE_PTHREAD_ATTR_GETSTACK) && !defined(__native_client__)
{
size_t size;
void *sstart;
}
continue;
} else {
+ /* Could be a parameter for sgen */
+ /*
fprintf (stderr, "MONO_GC_PARAMS must be a comma-delimited list of one or more of the following:\n");
fprintf (stderr, " max-heap-size=N (where N is an integer, possibly with a k, m or a g suffix)\n");
exit (1);
+ */
}
}
g_strfreev (opts);
void
mono_gc_collect (int generation)
{
- MONO_PROBE_GC_BEGIN (generation);
-
+#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->gc_induced++;
- GC_gcollect ();
-
- MONO_PROBE_GC_END (generation);
-#if defined(ENABLE_DTRACE) && defined(__sun__)
- /* This works around a dtrace -G problem on Solaris.
- Limit its actual use to when the probe is enabled. */
- if (MONO_PROBE_GC_END_ENABLED ())
- sleep(0);
#endif
+ GC_gcollect ();
}
/**
return GC_get_heap_size ();
}
-void
-mono_gc_disable (void)
-{
-#ifdef HAVE_GC_ENABLE
- GC_disable ();
-#else
- g_assert_not_reached ();
-#endif
-}
-
-void
-mono_gc_enable (void)
-{
-#ifdef HAVE_GC_ENABLE
- GC_enable ();
-#else
- g_assert_not_reached ();
-#endif
-}
-
gboolean
mono_gc_is_gc_thread (void)
{
{
MonoGCEvent e = (MonoGCEvent)event;
- if (e == MONO_GC_EVENT_PRE_STOP_WORLD)
+ switch (e) {
+ case MONO_GC_EVENT_PRE_STOP_WORLD:
+ MONO_GC_WORLD_STOP_BEGIN ();
mono_thread_info_suspend_lock ();
- else if (e == MONO_GC_EVENT_POST_START_WORLD)
+ break;
+
+ case MONO_GC_EVENT_POST_STOP_WORLD:
+ MONO_GC_WORLD_STOP_END ();
+ break;
+
+ case MONO_GC_EVENT_PRE_START_WORLD:
+ MONO_GC_WORLD_RESTART_BEGIN (1);
+ break;
+
+ case MONO_GC_EVENT_POST_START_WORLD:
+ MONO_GC_WORLD_RESTART_END (1);
mono_thread_info_suspend_unlock ();
-
- if (e == MONO_GC_EVENT_START) {
+ break;
+
+ case MONO_GC_EVENT_START:
+ MONO_GC_BEGIN (1);
+#ifndef DISABLE_PERFCOUNTERS
if (mono_perfcounters)
mono_perfcounters->gc_collections0++;
- mono_stats.major_gc_count ++;
+#endif
+ gc_stats.major_gc_count ++;
gc_start_time = mono_100ns_ticks ();
- } else if (e == MONO_GC_EVENT_END) {
+ break;
+
+ case MONO_GC_EVENT_END:
+ MONO_GC_END (1);
+#if defined(ENABLE_DTRACE) && defined(__sun__)
+ /* This works around a dtrace -G problem on Solaris.
+ Limit its actual use to when the probe is enabled. */
+ if (MONO_GC_END_ENABLED ())
+ sleep(0);
+#endif
+
+#ifndef DISABLE_PERFCOUNTERS
if (mono_perfcounters) {
guint64 heap_size = GC_get_heap_size ();
guint64 used_size = heap_size - GC_get_free_bytes ();
mono_perfcounters->gc_reserved_bytes = heap_size;
mono_perfcounters->gc_gen0size = heap_size;
}
- mono_stats.major_gc_time_usecs += (mono_100ns_ticks () - gc_start_time) / 10;
+#endif
+ gc_stats.major_gc_time_usecs += (mono_100ns_ticks () - gc_start_time) / 10;
mono_trace_message (MONO_TRACE_GC, "gc took %d usecs", (mono_100ns_ticks () - gc_start_time) / 10);
+ break;
}
+
mono_profiler_gc_event (e, 0);
}
on_gc_heap_resize (size_t new_size)
{
guint64 heap_size = GC_get_heap_size ();
+#ifndef DISABLE_PERFCOUNTERS
if (mono_perfcounters) {
mono_perfcounters->gc_committed_bytes = heap_size;
mono_perfcounters->gc_reserved_bytes = heap_size;
mono_perfcounters->gc_gen0size = heap_size;
}
+#endif
mono_profiler_gc_heap_resize (new_size);
}
{
/* libgc requires that we use HIDE_POINTER... */
*link_addr = (void*)HIDE_POINTER (obj);
- GC_GENERAL_REGISTER_DISAPPEARING_LINK (link_addr, obj);
+ if (track)
+ GC_REGISTER_LONG_LINK (link_addr, obj);
+ else
+ GC_GENERAL_REGISTER_DISAPPEARING_LINK (link_addr, obj);
}
void
-mono_gc_weak_link_remove (void **link_addr)
+mono_gc_weak_link_remove (void **link_addr, gboolean track)
{
- GC_unregister_disappearing_link (link_addr);
+ if (track)
+ GC_unregister_long_link (link_addr);
+ else
+ GC_unregister_disappearing_link (link_addr);
*link_addr = NULL;
}
return GC_should_invoke_finalizers ();
}
-/*
- * LOCKING: Assumes the domain_finalizers lock is held.
- */
-static void
-add_weak_track_handle_internal (MonoDomain *domain, MonoObject *obj, guint32 gchandle)
-{
- GSList *refs;
-
- if (!domain->track_resurrection_objects_hash)
- domain->track_resurrection_objects_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
-
- refs = g_hash_table_lookup (domain->track_resurrection_objects_hash, obj);
- refs = g_slist_prepend (refs, GUINT_TO_POINTER (gchandle));
- g_hash_table_insert (domain->track_resurrection_objects_hash, obj, refs);
-}
-
-void
-mono_gc_add_weak_track_handle (MonoObject *obj, guint32 handle)
-{
- MonoDomain *domain;
-
- if (!obj)
- return;
-
- domain = mono_object_get_domain (obj);
-
- mono_domain_finalizers_lock (domain);
-
- add_weak_track_handle_internal (domain, obj, handle);
-
- g_hash_table_insert (domain->track_resurrection_handles_hash, GUINT_TO_POINTER (handle), obj);
-
- mono_domain_finalizers_unlock (domain);
-}
-
-/*
- * LOCKING: Assumes the domain_finalizers lock is held.
- */
-static void
-remove_weak_track_handle_internal (MonoDomain *domain, MonoObject *obj, guint32 gchandle)
-{
- GSList *refs;
-
- if (!domain->track_resurrection_objects_hash)
- return;
-
- refs = g_hash_table_lookup (domain->track_resurrection_objects_hash, obj);
- refs = g_slist_remove (refs, GUINT_TO_POINTER (gchandle));
- g_hash_table_insert (domain->track_resurrection_objects_hash, obj, refs);
-}
-
-void
-mono_gc_change_weak_track_handle (MonoObject *old_obj, MonoObject *obj, guint32 gchandle)
-{
- MonoDomain *domain = mono_domain_get ();
-
- mono_domain_finalizers_lock (domain);
-
- if (old_obj)
- remove_weak_track_handle_internal (domain, old_obj, gchandle);
- if (obj)
- add_weak_track_handle_internal (domain, obj, gchandle);
-
- mono_domain_finalizers_unlock (domain);
-}
-
-void
-mono_gc_remove_weak_track_handle (guint32 gchandle)
-{
- MonoDomain *domain = mono_domain_get ();
- MonoObject *obj;
-
- /* Clean our entries in the two hashes in MonoDomain */
-
- mono_domain_finalizers_lock (domain);
-
- /* Get the original object this handle pointed to */
- obj = g_hash_table_lookup (domain->track_resurrection_handles_hash, GUINT_TO_POINTER (gchandle));
- if (obj) {
- g_hash_table_remove (domain->track_resurrection_handles_hash, GUINT_TO_POINTER (gchandle));
-
- remove_weak_track_handle_internal (domain, obj, gchandle);
- }
-
- mono_domain_finalizers_unlock (domain);
-}
-
-GSList*
-mono_gc_remove_weak_track_object (MonoDomain *domain, MonoObject *obj)
-{
- GSList *refs = NULL;
-
- if (domain->track_resurrection_objects_hash) {
- refs = g_hash_table_lookup (domain->track_resurrection_objects_hash, obj);
-
- if (refs)
- /*
- * Since we don't run finalizers again for resurrected objects,
- * no need to keep these around.
- */
- g_hash_table_remove (domain->track_resurrection_objects_hash, obj);
- }
-
- return refs;
-}
-
void
mono_gc_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
{
return NULL;
if (!SMALL_ENOUGH (klass->instance_size))
return NULL;
- if (mono_class_has_finalizer (klass) || klass->marshalbyref || (mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS))
+ if (mono_class_has_finalizer (klass) || mono_class_is_marshalbyref (klass) || (mono_profiler_get_events () & MONO_PROFILE_ALLOCATIONS))
return NULL;
if (klass->rank)
return NULL;
}
MonoMethod*
-mono_gc_get_managed_array_allocator (MonoVTable *vtable, int rank)
+mono_gc_get_managed_array_allocator (MonoClass *klass)
{
return NULL;
}
}
MonoMethod*
-mono_gc_get_managed_array_allocator (MonoVTable *vtable, int rank)
+mono_gc_get_managed_array_allocator (MonoClass *klass)
{
return NULL;
}
return NULL;
}
+gboolean
+mono_gc_card_table_nursery_check (void)
+{
+ g_assert_not_reached ();
+ return TRUE;
+}
+
void*
mono_gc_get_nursery (int *shift_bits, size_t *size)
{
return NULL;
}
+void
+mono_gc_set_current_thread_appdomain (MonoDomain *domain)
+{
+}
+
gboolean
mono_gc_precise_stack_mark_enabled (void)
{
{
}
+void
+mono_gc_set_stack_end (void *stack_end)
+{
+}
+
+void mono_gc_set_skip_thread (gboolean value)
+{
+}
+
/*
* These will call the redefined versions in libgc.
*/
return pthread_detach (thread);
}
+void
+mono_gc_pthread_exit (void *retval)
+{
+ pthread_exit (retval);
+}
+
#endif
#ifdef HOST_WIN32
}
#endif
+guint
+mono_gc_get_vtable_bits (MonoClass *class)
+{
+ return 0;
+}
+
+/*
+ * mono_gc_register_altstack:
+ *
+ * Register the dimensions of the normal stack and altstack with the collector.
+ * Currently, STACK/STACK_SIZE is only used when the thread is suspended while it is on an altstack.
+ */
+void
+mono_gc_register_altstack (gpointer stack, gint32 stack_size, gpointer altstack, gint32 altstack_size)
+{
+#ifdef USE_INCLUDED_LIBGC
+ GC_register_altstack (stack, stack_size, altstack, altstack_size);
+#endif
+}
+
+int
+mono_gc_get_los_limit (void)
+{
+ return G_MAXINT;
+}
+
+gboolean
+mono_gc_user_markers_supported (void)
+{
+ return FALSE;
+}
+
+void *
+mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+gboolean
+mono_gc_set_allow_synchronous_major (gboolean flag)
+{
+ return flag;
+}
+
#endif /* no Boehm GC */
projects / mono.git / blobdiff