2 * sgen-client.h: SGen client interface.
4 * Copyright (C) 2014 Xamarin Inc
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License 2.0 as published by the Free Software Foundation;
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License 2.0 along with this library; if not, write to the Free
17 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <metadata/sgen-pointer-queue.h>
22 void sgen_client_init (void);
25 * Returns the vtable used for dummy objects to fill the nursery for ease and speed of
26 * walking. Must be a valid vtable that is not used by any actual objects. Must be
29 GCVTable* sgen_client_get_array_fill_vtable (void);
32 * Fill the given range with a dummy object. Its vtable must be the one returned by
33 * `sgen_client_get_array_fill_vtable()`. If the range is too short to be filled with an
34 * object, null it. Return `TRUE` if the range was filled with an object, `FALSE` if it was
37 gboolean sgen_client_array_fill_range (char *start, size_t size);
40 * This is called if the nursery clearing policy at `clear-at-gc`, which is usually only
41 * used for debugging. If `size` is large enough for the memory to have been filled with a
42 * dummy, object, zero its header. Note that there might not actually be a header there.
44 void sgen_client_zero_array_fill_header (void *p, size_t size);
46 gboolean sgen_client_object_is_array_fill (GCObject *o);
48 gboolean sgen_client_object_has_critical_finalizer (GCObject *obj);
51 * Called after an object is enqueued for finalization. This is a very low-level callback.
52 * It should almost certainly be a NOP.
54 * FIXME: Can we merge this with `sgen_client_object_has_critical_finalizer()`?
56 void sgen_client_object_queued_for_finalization (GCObject *obj);
58 gboolean sgen_client_mark_ephemerons (ScanCopyContext ctx);
61 * Clear ephemeron pairs with unreachable keys.
62 * We pass the copy func so we can figure out if an array was promoted or not.
64 void sgen_client_clear_unreachable_ephemerons (ScanCopyContext ctx);
67 * This is called for objects that are larger than one card. If it's possible to scan only
68 * parts of the object based on which cards are marked, do so and return TRUE. Otherwise,
71 gboolean sgen_client_cardtable_scan_object (char *obj, mword block_obj_size, guint8 *cards, gboolean mod_union, ScanCopyContext ctx);
73 void sgen_client_nursery_objects_pinned (void **definitely_pinned, int count);
75 void sgen_client_collecting_minor (SgenPointerQueue *fin_ready_queue, SgenPointerQueue *critical_fin_queue);
76 void sgen_client_collecting_major_1 (void);
77 void sgen_client_pinned_los_object (char *obj);
78 void sgen_client_collecting_major_2 (void);
79 void sgen_client_collecting_major_3 (SgenPointerQueue *fin_ready_queue, SgenPointerQueue *critical_fin_queue);
82 * If the client has registered any internal memory types, this must return a string
83 * describing the given type. Only used for debugging.
85 const char* sgen_client_description_for_internal_mem_type (int type);
87 /* FIXME: Use `sgen_client_vtable_get_name()` instead of this. */
88 const char* sgen_client_object_safe_name (GCObject *obj);
90 const char* sgen_client_vtable_get_namespace (GCVTable *vtable);
91 const char* sgen_client_vtable_get_name (GCVTable *vtable);
93 void sgen_client_pre_collection_checks (void);
95 gboolean sgen_client_handle_gc_debug (const char *opt);
96 void sgen_client_print_gc_debug_usage (void);
99 #define TYPE_LONGLONG long long
100 #define TYPE_SIZE size_t
101 #define TYPE_POINTER gpointer
102 #define TYPE_BOOL gboolean
104 #define BEGIN_PROTOCOL_ENTRY0(method) \
105 void sgen_client_ ## method (void);
106 #define BEGIN_PROTOCOL_ENTRY_HEAVY0(method) \
107 void sgen_client_ ## method (void);
108 #define BEGIN_PROTOCOL_ENTRY1(method,t1,f1) \
109 void sgen_client_ ## method (t1 f1);
110 #define BEGIN_PROTOCOL_ENTRY_HEAVY1(method,t1,f1) \
111 void sgen_client_ ## method (t1 f1);
112 #define BEGIN_PROTOCOL_ENTRY2(method,t1,f1,t2,f2) \
113 void sgen_client_ ## method (t1 f1, t2 f2);
114 #define BEGIN_PROTOCOL_ENTRY_HEAVY2(method,t1,f1,t2,f2) \
115 void sgen_client_ ## method (t1 f1, t2 f2);
116 #define BEGIN_PROTOCOL_ENTRY3(method,t1,f1,t2,f2,t3,f3) \
117 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3);
118 #define BEGIN_PROTOCOL_ENTRY_HEAVY3(method,t1,f1,t2,f2,t3,f3) \
119 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3);
120 #define BEGIN_PROTOCOL_ENTRY4(method,t1,f1,t2,f2,t3,f3,t4,f4) \
121 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3, t4 f4);
122 #define BEGIN_PROTOCOL_ENTRY_HEAVY4(method,t1,f1,t2,f2,t3,f3,t4,f4) \
123 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3, t4 f4);
124 #define BEGIN_PROTOCOL_ENTRY5(method,t1,f1,t2,f2,t3,f3,t4,f4,t5,f5) \
125 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3, t4 f4, t5 f5);
126 #define BEGIN_PROTOCOL_ENTRY_HEAVY5(method,t1,f1,t2,f2,t3,f3,t4,f4,t5,f5) \
127 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3, t4 f4, t5 f5);
128 #define BEGIN_PROTOCOL_ENTRY6(method,t1,f1,t2,f2,t3,f3,t4,f4,t5,f5,t6,f6) \
129 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3, t4 f4, t5 f5, t6 f6);
130 #define BEGIN_PROTOCOL_ENTRY_HEAVY6(method,t1,f1,t2,f2,t3,f3,t4,f4,t5,f5,t6,f6) \
131 void sgen_client_ ## method (t1 f1, t2 f2, t3 f3, t4 f4, t5 f5, t6 f6);
135 #define DEFAULT_PRINT()
136 #define CUSTOM_PRINT(_)
138 #define IS_ALWAYS_MATCH(_)
139 #define MATCH_INDEX(_)
140 #define IS_VTABLE_MATCH(_)
142 #define END_PROTOCOL_ENTRY
143 #define END_PROTOCOL_ENTRY_HEAVY
145 #include "sgen-protocol-def.h"