2 * Copyright 2001-2003 Ximian, Inc
3 * Copyright 2003-2010 Novell, Inc.
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6 * a copy of this software and associated documentation files (the
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10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice shall be
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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24 extern long long stat_copy_object_called_nursery;
25 extern long long stat_objects_copied_nursery;
27 extern long long stat_nursery_copy_object_failed_from_space;
28 extern long long stat_nursery_copy_object_failed_forwarded;
29 extern long long stat_nursery_copy_object_failed_pinned;
31 extern long long stat_slots_allocated_in_vain;
34 * This function can be used even if the vtable of obj is not valid
35 * anymore, which is the case in the parallel collector.
38 par_copy_object_no_checks (char *destination, MonoVTable *vt, void *obj, mword objsize, SgenGrayQueue *queue)
41 static const void *copy_labels [] = { &&LAB_0, &&LAB_1, &&LAB_2, &&LAB_3, &&LAB_4, &&LAB_5, &&LAB_6, &&LAB_7, &&LAB_8 };
44 SGEN_ASSERT (9, vt->klass->inited, "vtable %p for class %s:%s was not initialized", vt, vt->klass->name_space, vt->klass->name);
45 SGEN_LOG (9, " (to %p, %s size: %lu)", destination, ((MonoObject*)obj)->vtable->klass->name, (unsigned long)objsize);
46 binary_protocol_copy (obj, destination, vt, objsize);
48 if (G_UNLIKELY (MONO_GC_OBJ_MOVED_ENABLED ())) {
49 int dest_gen = sgen_ptr_in_nursery (destination) ? GENERATION_NURSERY : GENERATION_OLD;
50 int src_gen = sgen_ptr_in_nursery (obj) ? GENERATION_NURSERY : GENERATION_OLD;
51 MONO_GC_OBJ_MOVED ((mword)destination, (mword)obj, dest_gen, src_gen, objsize, vt->klass->name_space, vt->klass->name);
55 if (objsize <= sizeof (gpointer) * 8) {
56 mword *dest = (mword*)destination;
57 goto *copy_labels [objsize / sizeof (gpointer)];
59 (dest) [7] = ((mword*)obj) [7];
61 (dest) [6] = ((mword*)obj) [6];
63 (dest) [5] = ((mword*)obj) [5];
65 (dest) [4] = ((mword*)obj) [4];
67 (dest) [3] = ((mword*)obj) [3];
69 (dest) [2] = ((mword*)obj) [2];
71 (dest) [1] = ((mword*)obj) [1];
77 /*can't trust memcpy doing word copies */
78 mono_gc_memmove (destination + sizeof (mword), (char*)obj + sizeof (mword), objsize - sizeof (mword));
81 mono_gc_memmove (destination + sizeof (mword), (char*)obj + sizeof (mword), objsize - sizeof (mword));
83 /* adjust array->bounds */
84 SGEN_ASSERT (9, vt->gc_descr, "vtable %p for class %s:%s has no gc descriptor", vt, vt->klass->name_space, vt->klass->name);
86 if (G_UNLIKELY (vt->rank && ((MonoArray*)obj)->bounds)) {
87 MonoArray *array = (MonoArray*)destination;
88 array->bounds = (MonoArrayBounds*)((char*)destination + ((char*)((MonoArray*)obj)->bounds - (char*)obj));
89 SGEN_LOG (9, "Array instance %p: size: %lu, rank: %d, length: %lu", array, (unsigned long)objsize, vt->rank, (unsigned long)mono_array_length (array));
91 if (G_UNLIKELY (mono_profiler_events & MONO_PROFILE_GC_MOVES))
92 sgen_register_moved_object (obj, destination);
95 SGEN_LOG (9, "Enqueuing gray object %p (%s)", obj, sgen_safe_name (obj));
96 GRAY_OBJECT_ENQUEUE (queue, obj);
101 * This can return OBJ itself on OOM.
104 static __declspec(noinline) void*
106 static G_GNUC_UNUSED void* __attribute__((noinline))
108 copy_object_no_checks (void *obj, SgenGrayQueue *queue)
110 MonoVTable *vt = ((MonoObject*)obj)->vtable;
111 gboolean has_references = SGEN_VTABLE_HAS_REFERENCES (vt);
112 mword objsize = SGEN_ALIGN_UP (sgen_par_object_get_size (vt, (MonoObject*)obj));
113 char *destination = COLLECTOR_SERIAL_ALLOC_FOR_PROMOTION (obj, objsize, has_references);
115 if (G_UNLIKELY (!destination)) {
116 collector_pin_object (obj, queue);
117 sgen_set_pinned_from_failed_allocation (objsize);
121 *(MonoVTable**)destination = vt;
122 par_copy_object_no_checks (destination, vt, obj, objsize, has_references ? queue : NULL);
124 /* set the forwarding pointer */
125 SGEN_FORWARD_OBJECT (obj, destination);