mirror of
https://gitlab.gnome.org/GNOME/glib.git
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1c391cc698
2001-02-17 Havoc Pennington <hp@pobox.com>
* gthread.c: include string.h
Applied patch from Soeren Sandmann:
* testglib.c: const fixes
* gwin32.h: format cleanups
* gutils.c (g_atexit): constify a variable
(g_find_program_in_path): constification
(g_basename): G_CONST_RETURN
(g_path_skip_root): G_CONST_RETURN
(g_getenv): G_CONST_RETURN
(g_get_user_name): G_CONST_RETURN
(g_get_real_name): G_CONST_RETURN
(g_get_home_dir): G_CONST_RETURN
(g_get_tmp_dir): G_CONST_RETURN
(g_get_prgname): G_CONST_RETURN
(_glib_gettext): G_CONST_RETURN
* gunicode.h: formatting cleanups
* gstrfuncs.c (g_strerror): G_CONST_RETURN
(g_strsignal): G_CONST_RETURN
* gspawn.c (g_execute): const on variables
* gmessages.c (printf_string_upper_bound): fix const on a variable
* gmem.c (g_mem_chunk_new): make the "name" arg const
(struct _GRealMemChunk): make the "name" field const
* gfileutils.c (g_file_open_tmp): store const return in a const
gchar* variable
* gdataset.c (g_quark_to_string): G_CONST_RETURN
2001-02-17 Havoc Pennington <hp@pobox.com>
Applied patch from Soeren Sandmann:
* gvaluetypes.c (g_value_get_string): G_CONST_RETURN
* gtype.c (g_type_name): G_CONST_RETURN
* gsignal.c (g_signal_name): G_CONST_RETURN
* gobject-query.c (main): const fix
2001-02-17 Havoc Pennington <hp@pobox.com>
Applied patch from Soeren Sandmann:
* gmodule.c (g_module_error): G_CONST_RETURN
(g_module_name): G_CONST_RETURN
2508 lines
68 KiB
C
2508 lines
68 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 1998, 1999, 2000 Tim Janik and Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gtype.h"
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/*
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* MT safe
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*/
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#include "gtypeplugin.h"
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#include "gvaluecollector.h"
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#include <string.h>
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/* NOTE: some functions (some internal variants and exported ones)
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* invalidate data portions of the TypeNodes. if external functions/callbacks
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* are called, pointers to memory maintained by TypeNodes have to be looked up
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* again. this affects most of the struct TypeNode fields, e.g. ->children or
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* ->iface_entries (not ->supers[] as of recently), as all those memory portions can
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* get realloc()ed during callback invocation.
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*
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* TODO:
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* - g_type_from_name() should do an ordered array lookup after fetching the
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* the quark, instead of a second hashtable lookup.
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* - speedup checks for virtual types, steal a bit somewhere
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*
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* FIXME:
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* - force interface initialization for already existing classes
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*
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* LOCKING:
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* lock handling issues when calling static functions are indicated by
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* uppercase letter postfixes, all static functions have to have
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* one of the below postfixes:
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* - _I: [Indifferent about locking]
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* function doesn't care about locks at all
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* - _U: [Unlocked invocation]
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* no read or write lock has to be held across function invocation
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* (locks may be acquired and released during invocation though)
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* - _L: [Locked invocation]
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* a write lock or more than 0 read locks have to be held across
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* function invocation
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* - _W: [Write-locked invocation]
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* a write lock has to be held across function invokation
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* - _Wm: [Write-locked invocation, mutatable]
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* like _W, but the write lock might be released and reacquired
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* during invocation, watch your pointers
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*/
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static GStaticRWLock type_rw_lock = G_STATIC_RW_LOCK_INIT;
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#define G_READ_LOCK(rw_lock) g_static_rw_lock_reader_lock (rw_lock)
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#define G_READ_UNLOCK(rw_lock) g_static_rw_lock_reader_unlock (rw_lock)
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#define G_WRITE_LOCK(rw_lock) g_static_rw_lock_writer_lock (rw_lock)
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#define G_WRITE_UNLOCK(rw_lock) g_static_rw_lock_writer_unlock (rw_lock)
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#define INVALID_RECURSION(func, arg, type_name) G_STMT_START{ \
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static const gchar *_action = " invalidly modified type "; \
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gpointer _arg = (gpointer) (arg); const gchar *_tname = (type_name), *_fname = (func); \
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if (_arg) \
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g_error ("%s(%p)%s`%s'", _fname, _arg, _action, _tname); \
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else \
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g_error ("%s()%s`%s'", _fname, _action, _tname); \
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}G_STMT_END
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#ifdef G_ENABLE_DEBUG
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#define DEBUG_CODE(debug_type, code_block) G_STMT_START { \
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if (_g_type_debug_flags & G_TYPE_DEBUG_ ## debug_type) \
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{ code_block; } \
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} G_STMT_END
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#else /* !G_ENABLE_DEBUG */
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#define DEBUG_CODE(debug_type, code_block) /* code_block */
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#endif /* G_ENABLE_DEBUG */
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#define TYPE_FUNDAMENTAL_FLAG_MASK (G_TYPE_FLAG_CLASSED | \
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G_TYPE_FLAG_INSTANTIATABLE | \
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G_TYPE_FLAG_DERIVABLE | \
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G_TYPE_FLAG_DEEP_DERIVABLE)
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#define TYPE_FLAG_MASK (G_TYPE_FLAG_ABSTRACT)
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/* --- typedefs --- */
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typedef struct _TypeNode TypeNode;
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typedef struct _CommonData CommonData;
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typedef struct _IFaceData IFaceData;
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typedef struct _ClassData ClassData;
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typedef struct _InstanceData InstanceData;
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typedef union _TypeData TypeData;
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typedef struct _IFaceEntry IFaceEntry;
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typedef struct _IFaceHolder IFaceHolder;
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/* --- prototypes --- */
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static inline GTypeFundamentalInfo* type_node_fundamental_info_L (TypeNode *node);
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static void type_add_flags_W (TypeNode *node,
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GTypeFlags flags);
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static void type_data_make_W (TypeNode *node,
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const GTypeInfo *info,
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const GTypeValueTable *value_table);
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static inline void type_data_ref_Wm (TypeNode *node);
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static inline void type_data_unref_Wm (TypeNode *node,
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gboolean uncached);
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static void type_data_last_unref_Wm (GType type,
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gboolean uncached);
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/* --- structures --- */
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struct _GValue /* kludge, keep in sync with gvalue.h */
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{
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GType g_type;
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};
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struct _TypeNode
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{
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GTypePlugin *plugin;
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guint n_children : 12;
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guint n_supers : 8;
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guint n_ifaces : 9;
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guint is_classed : 1;
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guint is_instantiatable : 1;
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guint is_iface : 1;
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GType *children;
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TypeData *data;
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GQuark qname;
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GData *global_gdata;
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union {
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IFaceEntry *iface_entries;
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IFaceHolder *iface_conformants;
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} private;
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GType supers[1]; /* flexible array */
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};
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#define SIZEOF_BASE_TYPE_NODE() (G_STRUCT_OFFSET (TypeNode, supers))
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#define MAX_N_SUPERS (255)
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#define MAX_N_CHILDREN (4095)
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#define MAX_N_IFACES (511)
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#define NODE_TYPE(node) (node->supers[0])
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#define NODE_PARENT_TYPE(node) (node->supers[1])
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#define NODE_NAME(node) ((gchar*)g_quark_to_string (node->qname))
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struct _IFaceHolder
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{
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GType instance_type;
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GInterfaceInfo *info;
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GTypePlugin *plugin;
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IFaceHolder *next;
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};
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struct _IFaceEntry
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{
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GType iface_type;
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GTypeInterface *vtable;
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};
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struct _CommonData
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{
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guint ref_count;
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GTypeValueTable *value_table;
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};
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struct _IFaceData
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{
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CommonData common;
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guint16 vtable_size;
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GBaseInitFunc vtable_init_base;
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GBaseFinalizeFunc vtable_finalize_base;
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};
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struct _ClassData
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{
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CommonData common;
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guint16 class_size;
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GBaseInitFunc class_init_base;
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GBaseFinalizeFunc class_finalize_base;
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GClassInitFunc class_init;
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GClassFinalizeFunc class_finalize;
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gconstpointer class_data;
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gpointer class;
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};
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struct _InstanceData
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{
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CommonData common;
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guint16 class_size;
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GBaseInitFunc class_init_base;
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GBaseFinalizeFunc class_finalize_base;
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GClassInitFunc class_init;
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GClassFinalizeFunc class_finalize;
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gconstpointer class_data;
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gpointer class;
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guint16 instance_size;
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guint16 n_preallocs;
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GInstanceInitFunc instance_init;
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GMemChunk *mem_chunk;
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};
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union _TypeData
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{
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CommonData common;
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IFaceData iface;
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ClassData class;
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InstanceData instance;
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};
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typedef struct {
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gpointer cache_data;
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GTypeClassCacheFunc cache_func;
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} ClassCacheFunc;
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/* --- variables --- */
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static guint static_n_class_cache_funcs = 0;
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static ClassCacheFunc *static_class_cache_funcs = NULL;
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static GType static_last_fundamental_id = 0;
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static GQuark static_quark_type_flags = 0;
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GTypeDebugFlags _g_type_debug_flags = 0;
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/* --- externs --- */
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const char *g_log_domain_gruntime = "GRuntime";
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/* --- type nodes --- */
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static GHashTable *static_type_nodes_ht = NULL;
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static GType *static_branch_seqnos = NULL;
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static TypeNode ***static_type_nodes = NULL;
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static inline TypeNode*
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lookup_type_node_L (register GType utype)
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{
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register GType ftype = G_TYPE_FUNDAMENTAL (utype);
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register GType b_seqno = G_TYPE_BRANCH_SEQNO (utype);
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if (ftype < static_last_fundamental_id && b_seqno < static_branch_seqnos[ftype])
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return static_type_nodes[ftype][b_seqno];
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else
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return NULL;
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}
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static TypeNode*
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type_node_any_new_W (TypeNode *pnode,
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GType ftype,
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const gchar *name,
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GTypePlugin *plugin,
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GTypeFundamentalFlags type_flags)
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{
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guint branch_last, n_supers;
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GType type;
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TypeNode *node;
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guint i, node_size = 0;
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n_supers = pnode ? pnode->n_supers + 1 : 0;
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branch_last = static_branch_seqnos[ftype]++;
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type = G_TYPE_DERIVE_ID (ftype, branch_last);
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g_assert ((type & G_TYPE_FLAG_RESERVED_ID_BIT) == 0);
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if (!branch_last || g_bit_storage (branch_last - 1) < g_bit_storage (static_branch_seqnos[ftype] - 1))
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static_type_nodes[ftype] = g_renew (TypeNode*, static_type_nodes[ftype], 1 << g_bit_storage (static_branch_seqnos[ftype] - 1));
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if (!pnode)
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node_size += sizeof (GTypeFundamentalInfo); /* fundamental type info */
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node_size += SIZEOF_BASE_TYPE_NODE (); /* TypeNode structure */
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node_size += (sizeof (GType) * (1 + n_supers + 1)); /* self + ancestors + 0 for ->supers[] */
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node = g_malloc0 (node_size);
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if (!pnode) /* offset fundamental types */
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node = G_STRUCT_MEMBER_P (node, sizeof (GTypeFundamentalInfo));
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static_type_nodes[ftype][branch_last] = node;
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node->n_supers = n_supers;
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if (!pnode)
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{
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node->supers[0] = type;
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node->supers[1] = 0;
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node->is_classed = (type_flags & G_TYPE_FLAG_CLASSED) != 0;
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node->is_instantiatable = (type_flags & G_TYPE_FLAG_INSTANTIATABLE) != 0;
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node->is_iface = G_TYPE_IS_INTERFACE (type);
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node->n_ifaces = 0;
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if (node->is_iface)
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node->private.iface_conformants = NULL;
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else
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node->private.iface_entries = NULL;
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}
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else
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{
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node->supers[0] = type;
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memcpy (node->supers + 1, pnode->supers, sizeof (GType) * (1 + pnode->n_supers + 1));
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node->is_classed = pnode->is_classed;
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node->is_instantiatable = pnode->is_instantiatable;
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node->is_iface = pnode->is_iface;
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if (node->is_iface)
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{
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node->n_ifaces = 0;
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node->private.iface_conformants = NULL;
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}
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else
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{
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node->n_ifaces = pnode->n_ifaces;
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node->private.iface_entries = g_memdup (pnode->private.iface_entries,
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sizeof (pnode->private.iface_entries[0]) * node->n_ifaces);
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}
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i = pnode->n_children++;
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pnode->children = g_renew (GType, pnode->children, pnode->n_children);
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pnode->children[i] = type;
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}
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node->plugin = plugin;
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node->n_children = 0;
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node->children = NULL;
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node->data = NULL;
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node->qname = g_quark_from_string (name);
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node->global_gdata = NULL;
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g_hash_table_insert (static_type_nodes_ht,
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GUINT_TO_POINTER (node->qname),
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GUINT_TO_POINTER (type));
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return node;
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}
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static inline GTypeFundamentalInfo*
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type_node_fundamental_info_L (TypeNode *node)
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{
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GType ftype = G_TYPE_FUNDAMENTAL (NODE_TYPE (node));
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if (ftype != NODE_TYPE (node))
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node = lookup_type_node_L (ftype);
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return node ? G_STRUCT_MEMBER_P (node, - (gssize) sizeof (GTypeFundamentalInfo)) : NULL;
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}
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static TypeNode*
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type_node_fundamental_new_W (GType ftype,
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const gchar *name,
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GTypeFundamentalFlags type_flags)
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{
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GTypeFundamentalInfo *finfo;
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TypeNode *node;
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guint i, flast;
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flast = static_last_fundamental_id;
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g_assert (ftype == G_TYPE_FUNDAMENTAL (ftype));
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type_flags &= TYPE_FUNDAMENTAL_FLAG_MASK;
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static_last_fundamental_id = MAX (static_last_fundamental_id, ftype + 1);
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if (static_last_fundamental_id > flast)
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{
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static_type_nodes = g_renew (TypeNode**, static_type_nodes, static_last_fundamental_id);
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static_branch_seqnos = g_renew (GType, static_branch_seqnos, static_last_fundamental_id);
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for (i = flast; i < static_last_fundamental_id; i++)
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{
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static_type_nodes[i] = NULL;
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static_branch_seqnos[i] = 0;
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}
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}
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g_assert (static_branch_seqnos[ftype] == 0);
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node = type_node_any_new_W (NULL, ftype, name, NULL, type_flags);
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finfo = type_node_fundamental_info_L (node);
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finfo->type_flags = type_flags;
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return node;
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}
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static TypeNode*
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type_node_new_W (TypeNode *pnode,
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const gchar *name,
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GTypePlugin *plugin)
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{
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g_assert (pnode);
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g_assert (pnode->n_supers < MAX_N_SUPERS);
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g_assert (pnode->n_children < MAX_N_CHILDREN);
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return type_node_any_new_W (pnode, G_TYPE_FUNDAMENTAL (NODE_TYPE (pnode)), name, plugin, 0);
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}
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|
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static inline IFaceEntry*
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type_lookup_iface_entry_L (TypeNode *node,
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TypeNode *iface)
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{
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if (iface->is_iface && node->n_ifaces)
|
|
{
|
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IFaceEntry *ifaces = node->private.iface_entries - 1;
|
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guint n_ifaces = node->n_ifaces;
|
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GType iface_type = NODE_TYPE (iface);
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do
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{
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guint i;
|
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IFaceEntry *check;
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|
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i = (n_ifaces + 1) / 2;
|
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check = ifaces + i;
|
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if (iface_type == check->iface_type)
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return check;
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else if (iface_type > check->iface_type)
|
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{
|
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n_ifaces -= i;
|
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ifaces = check;
|
|
}
|
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else /* if (iface_type < check->iface_type) */
|
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n_ifaces = i - 1;
|
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}
|
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while (n_ifaces);
|
|
}
|
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|
|
return NULL;
|
|
}
|
|
|
|
static inline gchar*
|
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type_descriptive_name_L (GType type)
|
|
{
|
|
if (type)
|
|
{
|
|
TypeNode *node = lookup_type_node_L (type);
|
|
|
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return node ? NODE_NAME (node) : "<unknown>";
|
|
}
|
|
else
|
|
return "<invalid>";
|
|
}
|
|
|
|
static inline gchar*
|
|
type_descriptive_name_U (GType type)
|
|
{
|
|
const gchar *name;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
name = type_descriptive_name_L (type);
|
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G_READ_UNLOCK (&type_rw_lock);
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|
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return (gchar *)name;
|
|
}
|
|
|
|
|
|
/* --- type consistency checks --- */
|
|
static gboolean
|
|
check_plugin_U (GTypePlugin *plugin,
|
|
gboolean need_complete_type_info,
|
|
gboolean need_complete_interface_info,
|
|
const gchar *type_name)
|
|
{
|
|
/* G_IS_TYPE_PLUGIN() and G_TYPE_PLUGIN_GET_CLASS() are external calls: _U
|
|
*/
|
|
if (!plugin)
|
|
{
|
|
g_warning ("plugin handle for type `%s' is NULL",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if (!G_IS_TYPE_PLUGIN (plugin))
|
|
{
|
|
g_warning ("plugin pointer (%p) for type `%s' is invalid",
|
|
plugin, type_name);
|
|
return FALSE;
|
|
}
|
|
if (need_complete_type_info && !G_TYPE_PLUGIN_GET_CLASS (plugin)->complete_type_info)
|
|
{
|
|
g_warning ("plugin for type `%s' has no complete_type_info() implementation",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if (need_complete_interface_info && !G_TYPE_PLUGIN_GET_CLASS (plugin)->complete_interface_info)
|
|
{
|
|
g_warning ("plugin for type `%s' has no complete_interface_info() implementation",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
check_type_name_U (const gchar *type_name)
|
|
{
|
|
static const gchar *extra_chars = "-_+";
|
|
const gchar *p = type_name;
|
|
gboolean name_valid;
|
|
|
|
if (!type_name[0] || !type_name[1] || !type_name[2])
|
|
{
|
|
g_warning ("type name `%s' is too short", type_name);
|
|
return FALSE;
|
|
}
|
|
/* check the first letter */
|
|
name_valid = (p[0] >= 'A' && p[0] <= 'Z') || (p[0] >= 'a' && p[0] <= 'z') || p[0] == '_';
|
|
for (p = type_name + 1; *p; p++)
|
|
name_valid &= ((p[0] >= 'A' && p[0] <= 'Z') ||
|
|
(p[0] >= 'a' && p[0] <= 'z') ||
|
|
(p[0] >= '0' && p[0] <= '9') ||
|
|
strchr (extra_chars, p[0]));
|
|
if (!name_valid)
|
|
{
|
|
g_warning ("type name `%s' contains invalid characters", type_name);
|
|
return FALSE;
|
|
}
|
|
if (g_type_from_name (type_name))
|
|
{
|
|
g_warning ("cannot register existing type `%s'", type_name);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
check_derivation_U (GType parent_type,
|
|
const gchar *type_name)
|
|
{
|
|
TypeNode *pnode;
|
|
GTypeFundamentalInfo* finfo;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
pnode = lookup_type_node_L (parent_type);
|
|
if (!pnode)
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
g_warning ("cannot derive type `%s' from invalid parent type `%s'",
|
|
type_name,
|
|
type_descriptive_name_U (parent_type));
|
|
return FALSE;
|
|
}
|
|
finfo = type_node_fundamental_info_L (pnode);
|
|
/* ensure flat derivability */
|
|
if (!(finfo->type_flags & G_TYPE_FLAG_DERIVABLE))
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
g_warning ("cannot derive `%s' from non-derivable parent type `%s'",
|
|
type_name,
|
|
NODE_NAME (pnode));
|
|
return FALSE;
|
|
}
|
|
/* ensure deep derivability */
|
|
if (parent_type != G_TYPE_FUNDAMENTAL (parent_type) &&
|
|
!(finfo->type_flags & G_TYPE_FLAG_DEEP_DERIVABLE))
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
g_warning ("cannot derive `%s' from non-fundamental parent type `%s'",
|
|
type_name,
|
|
NODE_NAME (pnode));
|
|
return FALSE;
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
check_collect_format_I (const gchar *collect_format)
|
|
{
|
|
const gchar *p = collect_format;
|
|
gchar valid_format[] = { G_VALUE_COLLECT_INT, G_VALUE_COLLECT_LONG,
|
|
G_VALUE_COLLECT_DOUBLE, G_VALUE_COLLECT_POINTER,
|
|
0 };
|
|
|
|
while (*p)
|
|
if (!strchr (valid_format, *p++))
|
|
return FALSE;
|
|
return p - collect_format <= G_VALUE_COLLECT_FORMAT_MAX_LENGTH;
|
|
}
|
|
|
|
static gboolean
|
|
check_value_table_I (const gchar *type_name,
|
|
const GTypeValueTable *value_table)
|
|
{
|
|
if (!value_table)
|
|
return FALSE;
|
|
else if (value_table->value_init == NULL)
|
|
{
|
|
if (value_table->value_free || value_table->value_copy ||
|
|
value_table->value_peek_pointer ||
|
|
value_table->collect_format || value_table->collect_value ||
|
|
value_table->lcopy_format || value_table->lcopy_value)
|
|
g_warning ("cannot handle uninitializable values of type `%s'",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
else /* value_table->value_init != NULL */
|
|
{
|
|
if (!value_table->value_free)
|
|
{
|
|
/* +++ optional +++
|
|
* g_warning ("missing `value_free()' for type `%s'", type_name);
|
|
* return FALSE;
|
|
*/
|
|
}
|
|
if (!value_table->value_copy)
|
|
{
|
|
g_warning ("missing `value_copy()' for type `%s'", type_name);
|
|
return FALSE;
|
|
}
|
|
if ((value_table->collect_format || value_table->collect_value) &&
|
|
(!value_table->collect_format || !value_table->collect_value))
|
|
{
|
|
g_warning ("one of `collect_format' and `collect_value()' is unspecified for type `%s'",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if (value_table->collect_format && !check_collect_format_I (value_table->collect_format))
|
|
{
|
|
g_warning ("the `%s' specification for type `%s' is too long or invalid",
|
|
"collect_format",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if ((value_table->lcopy_format || value_table->lcopy_value) &&
|
|
(!value_table->lcopy_format || !value_table->lcopy_value))
|
|
{
|
|
g_warning ("one of `lcopy_format' and `lcopy_value()' is unspecified for type `%s'",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if (value_table->lcopy_format && !check_collect_format_I (value_table->lcopy_format))
|
|
{
|
|
g_warning ("the `%s' specification for type `%s' is too long or invalid",
|
|
"lcopy_format",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
check_type_info_L (TypeNode *pnode,
|
|
GType ftype,
|
|
const gchar *type_name,
|
|
const GTypeInfo *info)
|
|
{
|
|
GTypeFundamentalInfo *finfo = type_node_fundamental_info_L (lookup_type_node_L (ftype));
|
|
gboolean is_interface = G_TYPE_IS_INTERFACE (ftype);
|
|
|
|
/* check instance members */
|
|
if (!(finfo->type_flags & G_TYPE_FLAG_INSTANTIATABLE) &&
|
|
(info->instance_size || info->n_preallocs || info->instance_init))
|
|
{
|
|
if (pnode)
|
|
g_warning ("cannot instantiate `%s', derived from non-instantiatable parent type `%s'",
|
|
type_name,
|
|
NODE_NAME (pnode));
|
|
else
|
|
g_warning ("cannot instantiate `%s' as non-instantiatable fundamental",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
/* check class & interface members */
|
|
if (!(finfo->type_flags & G_TYPE_FLAG_CLASSED) &&
|
|
(info->class_init || info->class_finalize || info->class_data ||
|
|
(!is_interface && (info->class_size || info->base_init || info->base_finalize))))
|
|
{
|
|
if (pnode)
|
|
g_warning ("cannot create class for `%s', derived from non-classed parent type `%s'",
|
|
type_name,
|
|
NODE_NAME (pnode));
|
|
else
|
|
g_warning ("cannot create class for `%s' as non-classed fundamental",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
/* check interface size */
|
|
if (is_interface && info->class_size < sizeof (GTypeInterface))
|
|
{
|
|
g_warning ("specified interface size for type `%s' is smaller than `GTypeInterface' size",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
/* check class size */
|
|
if (finfo->type_flags & G_TYPE_FLAG_CLASSED)
|
|
{
|
|
if (info->class_size < sizeof (GTypeClass))
|
|
{
|
|
g_warning ("specified class size for type `%s' is smaller than `GTypeClass' size",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if (pnode && info->class_size < pnode->data->class.class_size)
|
|
{
|
|
g_warning ("specified class size for type `%s' is smaller "
|
|
"than the parent type's `%s' class size",
|
|
type_name,
|
|
NODE_NAME (pnode));
|
|
return FALSE;
|
|
}
|
|
}
|
|
/* check instance size */
|
|
if (finfo->type_flags & G_TYPE_FLAG_INSTANTIATABLE)
|
|
{
|
|
if (info->instance_size < sizeof (GTypeInstance))
|
|
{
|
|
g_warning ("specified instance size for type `%s' is smaller than `GTypeInstance' size",
|
|
type_name);
|
|
return FALSE;
|
|
}
|
|
if (pnode && info->instance_size < pnode->data->instance.instance_size)
|
|
{
|
|
g_warning ("specified instance size for type `%s' is smaller "
|
|
"than the parent type's `%s' instance size",
|
|
type_name,
|
|
NODE_NAME (pnode));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static TypeNode*
|
|
find_conforming_type_L (TypeNode *pnode,
|
|
TypeNode *iface)
|
|
{
|
|
TypeNode *node = NULL;
|
|
guint i;
|
|
|
|
if (type_lookup_iface_entry_L (pnode, iface))
|
|
return pnode;
|
|
|
|
for (i = 0; i < pnode->n_children && !node; i++)
|
|
node = find_conforming_type_L (lookup_type_node_L (pnode->children[i]), iface);
|
|
|
|
return node;
|
|
}
|
|
|
|
static gboolean
|
|
check_add_interface_L (GType instance_type,
|
|
GType iface_type)
|
|
{
|
|
TypeNode *node = lookup_type_node_L (instance_type);
|
|
TypeNode *iface = lookup_type_node_L (iface_type);
|
|
TypeNode *tnode;
|
|
|
|
if (!node || !node->is_instantiatable)
|
|
{
|
|
g_warning ("cannot add interfaces to invalid (non-instantiatable) type `%s'",
|
|
type_descriptive_name_L (instance_type));
|
|
return FALSE;
|
|
}
|
|
if (!iface || !iface->is_iface)
|
|
{
|
|
g_warning ("cannot add invalid (non-interface) type `%s' to type `%s'",
|
|
type_descriptive_name_L (iface_type),
|
|
NODE_NAME (node));
|
|
return FALSE;
|
|
}
|
|
tnode = lookup_type_node_L (NODE_PARENT_TYPE (iface));
|
|
if (NODE_PARENT_TYPE (tnode) && !type_lookup_iface_entry_L (node, tnode))
|
|
{
|
|
g_warning ("cannot add sub-interface `%s' to type `%s' which does not conform to super-interface `%s'",
|
|
NODE_NAME (iface),
|
|
NODE_NAME (node),
|
|
NODE_NAME (tnode));
|
|
return FALSE;
|
|
}
|
|
tnode = find_conforming_type_L (node, iface);
|
|
if (tnode)
|
|
{
|
|
g_warning ("cannot add interface type `%s' to type `%s', since type `%s' already conforms to interface",
|
|
NODE_NAME (iface),
|
|
NODE_NAME (node),
|
|
NODE_NAME (tnode));
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
check_interface_info_L (TypeNode *iface,
|
|
GType instance_type,
|
|
const GInterfaceInfo *info)
|
|
{
|
|
if ((info->interface_finalize || info->interface_data) && !info->interface_init)
|
|
{
|
|
g_warning ("interface type `%s' for type `%s' comes without initializer",
|
|
NODE_NAME (iface),
|
|
type_descriptive_name_L (instance_type));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* --- type info (type node data) --- */
|
|
static void
|
|
type_data_make_W (TypeNode *node,
|
|
const GTypeInfo *info,
|
|
const GTypeValueTable *value_table)
|
|
{
|
|
TypeData *data;
|
|
GTypeValueTable *vtable = NULL;
|
|
guint vtable_size = 0;
|
|
|
|
g_assert (node->data == NULL && info != NULL);
|
|
|
|
if (!value_table)
|
|
{
|
|
TypeNode *pnode = lookup_type_node_L (NODE_PARENT_TYPE (node));
|
|
|
|
if (pnode)
|
|
vtable = pnode->data->common.value_table;
|
|
else
|
|
{
|
|
static const GTypeValueTable zero_vtable = { NULL, };
|
|
|
|
value_table = &zero_vtable;
|
|
}
|
|
}
|
|
if (value_table)
|
|
vtable_size = sizeof (GTypeValueTable);
|
|
|
|
if (node->is_instantiatable) /* carefull, is_instantiatable is also is_classed */
|
|
{
|
|
data = g_malloc0 (sizeof (InstanceData) + vtable_size);
|
|
if (vtable_size)
|
|
vtable = G_STRUCT_MEMBER_P (data, sizeof (InstanceData));
|
|
data->instance.class_size = info->class_size;
|
|
data->instance.class_init_base = info->base_init;
|
|
data->instance.class_finalize_base = info->base_finalize;
|
|
data->instance.class_init = info->class_init;
|
|
data->instance.class_finalize = info->class_finalize;
|
|
data->instance.class_data = info->class_data;
|
|
data->instance.class = NULL;
|
|
data->instance.instance_size = info->instance_size;
|
|
#ifdef DISABLE_MEM_POOLS
|
|
data->instance.n_preallocs = 0;
|
|
#else /* !DISABLE_MEM_POOLS */
|
|
data->instance.n_preallocs = MIN (info->n_preallocs, 1024);
|
|
#endif /* !DISABLE_MEM_POOLS */
|
|
data->instance.instance_init = info->instance_init;
|
|
data->instance.mem_chunk = NULL;
|
|
}
|
|
else if (node->is_classed) /* only classed */
|
|
{
|
|
data = g_malloc0 (sizeof (ClassData) + vtable_size);
|
|
if (vtable_size)
|
|
vtable = G_STRUCT_MEMBER_P (data, sizeof (ClassData));
|
|
data->class.class_size = info->class_size;
|
|
data->class.class_init_base = info->base_init;
|
|
data->class.class_finalize_base = info->base_finalize;
|
|
data->class.class_init = info->class_init;
|
|
data->class.class_finalize = info->class_finalize;
|
|
data->class.class_data = info->class_data;
|
|
data->class.class = NULL;
|
|
}
|
|
else if (node->is_iface)
|
|
{
|
|
data = g_malloc0 (sizeof (IFaceData) + vtable_size);
|
|
if (vtable_size)
|
|
vtable = G_STRUCT_MEMBER_P (data, sizeof (IFaceData));
|
|
data->iface.vtable_size = info->class_size;
|
|
data->iface.vtable_init_base = info->base_init;
|
|
data->iface.vtable_finalize_base = info->base_finalize;
|
|
}
|
|
else
|
|
{
|
|
data = g_malloc0 (sizeof (CommonData) + vtable_size);
|
|
if (vtable_size)
|
|
vtable = G_STRUCT_MEMBER_P (data, sizeof (CommonData));
|
|
}
|
|
|
|
node->data = data;
|
|
node->data->common.ref_count = 1;
|
|
|
|
if (vtable_size)
|
|
{
|
|
*vtable = *value_table;
|
|
vtable->collect_format = g_strdup (value_table->collect_format ? value_table->collect_format : "");
|
|
vtable->lcopy_format = g_strdup (value_table->lcopy_format ? value_table->lcopy_format : "");
|
|
}
|
|
node->data->common.value_table = vtable;
|
|
|
|
g_assert (node->data->common.value_table != NULL); /* paranoid */
|
|
}
|
|
|
|
static inline void
|
|
type_data_ref_Wm (TypeNode *node)
|
|
{
|
|
if (!node->data)
|
|
{
|
|
TypeNode *pnode = lookup_type_node_L (NODE_PARENT_TYPE (node));
|
|
GTypeInfo tmp_info;
|
|
GTypeValueTable tmp_value_table;
|
|
|
|
g_assert (node->plugin != NULL);
|
|
|
|
if (pnode)
|
|
{
|
|
type_data_ref_Wm (pnode);
|
|
if (node->data)
|
|
INVALID_RECURSION ("g_type_plugin_*", node->plugin, NODE_NAME (node));
|
|
}
|
|
|
|
memset (&tmp_info, 0, sizeof (tmp_info));
|
|
memset (&tmp_value_table, 0, sizeof (tmp_value_table));
|
|
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_type_plugin_use (node->plugin);
|
|
g_type_plugin_complete_type_info (node->plugin, NODE_TYPE (node), &tmp_info, &tmp_value_table);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
if (node->data)
|
|
INVALID_RECURSION ("g_type_plugin_*", node->plugin, NODE_NAME (node));
|
|
|
|
check_type_info_L (pnode, G_TYPE_FUNDAMENTAL (NODE_TYPE (node)), NODE_NAME (node), &tmp_info);
|
|
type_data_make_W (node, &tmp_info,
|
|
check_value_table_I (NODE_NAME (node),
|
|
&tmp_value_table) ? &tmp_value_table : NULL);
|
|
}
|
|
else
|
|
{
|
|
g_assert (node->data->common.ref_count > 0);
|
|
|
|
node->data->common.ref_count += 1;
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
type_data_unref_Wm (TypeNode *node,
|
|
gboolean uncached)
|
|
{
|
|
g_assert (node->data && node->data->common.ref_count);
|
|
|
|
if (node->data->common.ref_count > 1)
|
|
node->data->common.ref_count -= 1;
|
|
else
|
|
{
|
|
if (!node->plugin)
|
|
{
|
|
g_warning ("static type `%s' unreferenced too often",
|
|
NODE_NAME (node));
|
|
return;
|
|
}
|
|
|
|
type_data_last_unref_Wm (NODE_TYPE (node), uncached);
|
|
}
|
|
}
|
|
|
|
static void
|
|
type_node_add_iface_entry_W (TypeNode *node,
|
|
GType iface_type)
|
|
{
|
|
IFaceEntry *entries;
|
|
guint i;
|
|
|
|
g_assert (node->is_instantiatable && node->n_ifaces < MAX_N_IFACES);
|
|
|
|
node->n_ifaces++;
|
|
node->private.iface_entries = g_renew (IFaceEntry, node->private.iface_entries, node->n_ifaces);
|
|
entries = node->private.iface_entries;
|
|
for (i = 0; i < node->n_ifaces - 1; i++)
|
|
if (entries[i].iface_type > iface_type)
|
|
break;
|
|
g_memmove (entries + i + 1, entries + i, sizeof (entries[0]) * (node->n_ifaces - i - 1));
|
|
entries[i].iface_type = iface_type;
|
|
entries[i].vtable = NULL;
|
|
|
|
for (i = 0; i < node->n_children; i++)
|
|
type_node_add_iface_entry_W (lookup_type_node_L (node->children[i]), iface_type);
|
|
}
|
|
|
|
static void
|
|
type_add_interface_W (TypeNode *node,
|
|
TypeNode *iface,
|
|
const GInterfaceInfo *info,
|
|
GTypePlugin *plugin)
|
|
{
|
|
IFaceHolder *iholder = g_new0 (IFaceHolder, 1);
|
|
|
|
/* we must not call any functions of GInterfaceInfo from within here, since
|
|
* we got most probably called from _within_ a type registration function
|
|
*/
|
|
g_assert (node->is_instantiatable && iface->is_iface && ((info && !plugin) || (!info && plugin)));
|
|
|
|
iholder->next = iface->private.iface_conformants;
|
|
iface->private.iface_conformants = iholder;
|
|
iholder->instance_type = NODE_TYPE (node);
|
|
iholder->info = info ? g_memdup (info, sizeof (*info)) : NULL;
|
|
iholder->plugin = plugin;
|
|
|
|
type_node_add_iface_entry_W (node, NODE_TYPE (iface));
|
|
}
|
|
|
|
static IFaceHolder*
|
|
type_iface_retrive_holder_info_Wm (TypeNode *iface,
|
|
GType instance_type)
|
|
{
|
|
IFaceHolder *iholder = iface->private.iface_conformants;
|
|
|
|
g_assert (iface->is_iface);
|
|
|
|
while (iholder->instance_type != instance_type)
|
|
iholder = iholder->next;
|
|
|
|
if (!iholder->info)
|
|
{
|
|
GInterfaceInfo tmp_info;
|
|
|
|
g_assert (iholder->plugin != NULL);
|
|
|
|
type_data_ref_Wm (iface);
|
|
if (iholder->info)
|
|
INVALID_RECURSION ("g_type_plugin_*", iface->plugin, NODE_NAME (iface));
|
|
|
|
memset (&tmp_info, 0, sizeof (tmp_info));
|
|
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_type_plugin_use (iholder->plugin);
|
|
g_type_plugin_complete_interface_info (iholder->plugin, NODE_TYPE (iface), instance_type, &tmp_info);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
if (iholder->info)
|
|
INVALID_RECURSION ("g_type_plugin_*", iholder->plugin, NODE_NAME (iface));
|
|
|
|
check_interface_info_L (iface, instance_type, &tmp_info);
|
|
iholder->info = g_memdup (&tmp_info, sizeof (tmp_info));
|
|
}
|
|
|
|
return iholder;
|
|
}
|
|
|
|
static void
|
|
type_iface_blow_holder_info_Wm (TypeNode *iface,
|
|
GType instance_type)
|
|
{
|
|
IFaceHolder *iholder = iface->private.iface_conformants;
|
|
|
|
g_assert (iface->is_iface);
|
|
|
|
while (iholder->instance_type != instance_type)
|
|
iholder = iholder->next;
|
|
|
|
if (iholder->info && iholder->plugin)
|
|
{
|
|
g_free (iholder->info);
|
|
iholder->info = NULL;
|
|
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_type_plugin_unuse (iholder->plugin);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
|
|
type_data_unref_Wm (iface, FALSE);
|
|
}
|
|
}
|
|
|
|
|
|
/* --- type structure creation/destruction --- */
|
|
GTypeInstance*
|
|
g_type_create_instance (GType type)
|
|
{
|
|
TypeNode *node;
|
|
GTypeInstance *instance;
|
|
GTypeClass *class;
|
|
guint i;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
if (!node || !node->is_instantiatable)
|
|
{
|
|
g_warning ("cannot create new instance of invalid (non-instantiatable) type `%s'",
|
|
type_descriptive_name_U (type));
|
|
return NULL;
|
|
}
|
|
/* G_TYPE_IS_ABSTRACT() is an external call: _U */
|
|
if (G_TYPE_IS_ABSTRACT (type))
|
|
{
|
|
g_warning ("cannot create instance of abstract (non-instantiatable) type `%s'",
|
|
type_descriptive_name_U (type));
|
|
return NULL;
|
|
}
|
|
|
|
class = g_type_class_ref (type);
|
|
|
|
if (node->data->instance.n_preallocs)
|
|
{
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
if (!node->data->instance.mem_chunk)
|
|
node->data->instance.mem_chunk = g_mem_chunk_new (NODE_NAME (node),
|
|
node->data->instance.instance_size,
|
|
(node->data->instance.instance_size *
|
|
node->data->instance.n_preallocs),
|
|
G_ALLOC_AND_FREE);
|
|
instance = g_chunk_new0 (GTypeInstance, node->data->instance.mem_chunk);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
else
|
|
instance = g_malloc0 (node->data->instance.instance_size); /* fine without read lock */
|
|
for (i = node->n_supers; i > 0; i--)
|
|
{
|
|
TypeNode *pnode;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
pnode = lookup_type_node_L (node->supers[i]);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
if (pnode->data->instance.instance_init)
|
|
{
|
|
instance->g_class = pnode->data->instance.class;
|
|
pnode->data->instance.instance_init (instance, class);
|
|
}
|
|
}
|
|
instance->g_class = class;
|
|
|
|
if (node->data->instance.instance_init)
|
|
node->data->instance.instance_init (instance, class);
|
|
|
|
return instance;
|
|
}
|
|
|
|
void
|
|
g_type_free_instance (GTypeInstance *instance)
|
|
{
|
|
TypeNode *node;
|
|
GTypeClass *class;
|
|
|
|
g_return_if_fail (instance != NULL && instance->g_class != NULL);
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
class = instance->g_class;
|
|
node = lookup_type_node_L (class->g_type);
|
|
if (!node || !node->is_instantiatable || !node->data || node->data->class.class != (gpointer) class)
|
|
{
|
|
g_warning ("cannot free instance of invalid (non-instantiatable) type `%s'",
|
|
type_descriptive_name_L (class->g_type));
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
return;
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
/* G_TYPE_IS_ABSTRACT() is an external call: _U */
|
|
if (G_TYPE_IS_ABSTRACT (NODE_TYPE (node)))
|
|
{
|
|
g_warning ("cannot free instance of abstract (non-instantiatable) type `%s'",
|
|
NODE_NAME (node));
|
|
return;
|
|
}
|
|
|
|
instance->g_class = NULL;
|
|
memset (instance, 0xaa, node->data->instance.instance_size); // FIXME: debugging hack
|
|
if (node->data->instance.n_preallocs)
|
|
{
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
g_chunk_free (instance, node->data->instance.mem_chunk);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
else
|
|
g_free (instance);
|
|
|
|
g_type_class_unref (class);
|
|
}
|
|
|
|
static void
|
|
type_propagate_iface_vtable_W (TypeNode *pnode,
|
|
TypeNode *iface,
|
|
GTypeInterface *vtable)
|
|
{
|
|
IFaceEntry *entry = type_lookup_iface_entry_L (pnode, iface);
|
|
guint i;
|
|
|
|
entry->vtable = vtable;
|
|
for (i = 0; i < pnode->n_children; i++)
|
|
{
|
|
TypeNode *node = lookup_type_node_L (pnode->children[i]);
|
|
|
|
type_propagate_iface_vtable_W (node, iface, vtable);
|
|
}
|
|
}
|
|
|
|
static void
|
|
type_iface_vtable_init_Wm (TypeNode *iface,
|
|
TypeNode *node)
|
|
{
|
|
IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
|
|
IFaceHolder *iholder = type_iface_retrive_holder_info_Wm (iface, NODE_TYPE (node));
|
|
GTypeInterface *vtable;
|
|
|
|
g_assert (iface->data && entry && entry->vtable == NULL && iholder && iholder->info);
|
|
|
|
vtable = g_malloc0 (iface->data->iface.vtable_size);
|
|
type_propagate_iface_vtable_W (node, iface, vtable);
|
|
vtable->g_type = NODE_TYPE (iface);
|
|
vtable->g_instance_type = NODE_TYPE (node);
|
|
|
|
if (iface->data->iface.vtable_init_base || iholder->info->interface_init)
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
if (iface->data->iface.vtable_init_base)
|
|
iface->data->iface.vtable_init_base (vtable);
|
|
if (iholder->info->interface_init)
|
|
iholder->info->interface_init (vtable, iholder->info->interface_data);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
}
|
|
}
|
|
|
|
static void
|
|
type_iface_vtable_finalize_Wm (TypeNode *iface,
|
|
TypeNode *node,
|
|
GTypeInterface *vtable)
|
|
{
|
|
IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
|
|
IFaceHolder *iholder = iface->private.iface_conformants;
|
|
|
|
g_assert (entry && entry->vtable == vtable);
|
|
|
|
while (iholder->instance_type != NODE_TYPE (node))
|
|
iholder = iholder->next;
|
|
g_assert (iholder && iholder->info);
|
|
|
|
type_propagate_iface_vtable_W (node, iface, NULL);
|
|
if (iholder->info->interface_finalize || iface->data->iface.vtable_finalize_base)
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
if (iholder->info->interface_finalize)
|
|
iholder->info->interface_finalize (vtable, iholder->info->interface_data);
|
|
if (iface->data->iface.vtable_finalize_base)
|
|
iface->data->iface.vtable_finalize_base (vtable);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
}
|
|
vtable->g_type = 0;
|
|
vtable->g_instance_type = 0;
|
|
g_free (vtable);
|
|
|
|
type_iface_blow_holder_info_Wm (iface, NODE_TYPE (node));
|
|
}
|
|
|
|
static void
|
|
type_class_init_Wm (TypeNode *node,
|
|
GTypeClass *pclass)
|
|
{
|
|
GSList *slist, *init_slist = NULL;
|
|
GTypeClass *class;
|
|
IFaceEntry *entry;
|
|
TypeNode *bnode;
|
|
guint i;
|
|
|
|
g_assert (node->is_classed && node->data &&
|
|
node->data->class.class_size &&
|
|
!node->data->class.class);
|
|
|
|
class = g_malloc0 (node->data->class.class_size);
|
|
node->data->class.class = class;
|
|
|
|
if (pclass)
|
|
{
|
|
TypeNode *pnode = lookup_type_node_L (pclass->g_type);
|
|
|
|
memcpy (class, pclass, pnode->data->class.class_size);
|
|
}
|
|
class->g_type = NODE_TYPE (node);
|
|
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
/* stack all base class initialization functions, so we
|
|
* call them in ascending order.
|
|
*/
|
|
G_READ_LOCK (&type_rw_lock);
|
|
for (bnode = node; bnode; bnode = lookup_type_node_L (NODE_PARENT_TYPE (bnode)))
|
|
if (bnode->data->class.class_init_base)
|
|
init_slist = g_slist_prepend (init_slist, (gpointer) bnode->data->class.class_init_base);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
for (slist = init_slist; slist; slist = slist->next)
|
|
{
|
|
GBaseInitFunc class_init_base = (GBaseInitFunc) slist->data;
|
|
|
|
class_init_base (class);
|
|
}
|
|
g_slist_free (init_slist);
|
|
|
|
if (node->data->class.class_init)
|
|
node->data->class.class_init (class, (gpointer) node->data->class.class_data);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
|
|
/* ok, we got the class done, now initialize all interfaces */
|
|
for (entry = NULL, i = 0; i < node->n_ifaces; i++)
|
|
if (!node->private.iface_entries[i].vtable)
|
|
entry = node->private.iface_entries + i;
|
|
while (entry)
|
|
{
|
|
type_iface_vtable_init_Wm (lookup_type_node_L (entry->iface_type), node);
|
|
|
|
for (entry = NULL, i = 0; i < node->n_ifaces; i++)
|
|
if (!node->private.iface_entries[i].vtable)
|
|
entry = node->private.iface_entries + i;
|
|
}
|
|
}
|
|
|
|
static void
|
|
type_data_finalize_class_ifaces_Wm (TypeNode *node)
|
|
{
|
|
IFaceEntry *entry;
|
|
guint i;
|
|
|
|
g_assert (node->is_instantiatable && node->data && node->data->class.class && node->data->common.ref_count == 0);
|
|
|
|
g_message ("finalizing interfaces for %sClass `%s'",
|
|
type_descriptive_name_L (G_TYPE_FUNDAMENTAL (NODE_TYPE (node))),
|
|
type_descriptive_name_L (NODE_TYPE (node)));
|
|
|
|
for (entry = NULL, i = 0; i < node->n_ifaces; i++)
|
|
if (node->private.iface_entries[i].vtable &&
|
|
node->private.iface_entries[i].vtable->g_instance_type == NODE_TYPE (node))
|
|
entry = node->private.iface_entries + i;
|
|
while (entry)
|
|
{
|
|
type_iface_vtable_finalize_Wm (lookup_type_node_L (entry->iface_type), node, entry->vtable);
|
|
|
|
for (entry = NULL, i = 0; i < node->n_ifaces; i++)
|
|
if (node->private.iface_entries[i].vtable &&
|
|
node->private.iface_entries[i].vtable->g_instance_type == NODE_TYPE (node))
|
|
entry = node->private.iface_entries + i;
|
|
}
|
|
}
|
|
|
|
static void
|
|
type_data_finalize_class_U (TypeNode *node,
|
|
ClassData *cdata)
|
|
{
|
|
GTypeClass *class = cdata->class;
|
|
TypeNode *bnode;
|
|
|
|
g_assert (cdata->class && cdata->common.ref_count == 0);
|
|
|
|
g_message ("finalizing %sClass `%s'",
|
|
type_descriptive_name_U (G_TYPE_FUNDAMENTAL (NODE_TYPE (node))),
|
|
type_descriptive_name_U (NODE_TYPE (node)));
|
|
|
|
if (cdata->class_finalize)
|
|
cdata->class_finalize (class, (gpointer) cdata->class_data);
|
|
|
|
/* call all base class destruction functions in descending order
|
|
*/
|
|
if (cdata->class_finalize_base)
|
|
cdata->class_finalize_base (class);
|
|
G_READ_LOCK (&type_rw_lock);
|
|
for (bnode = lookup_type_node_L (NODE_PARENT_TYPE (node)); bnode; bnode = lookup_type_node_L (NODE_PARENT_TYPE (bnode)))
|
|
if (bnode->data->class.class_finalize_base)
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
bnode->data->class.class_finalize_base (class);
|
|
G_READ_LOCK (&type_rw_lock);
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
class->g_type = 0;
|
|
g_free (cdata->class);
|
|
}
|
|
|
|
static void
|
|
type_data_last_unref_Wm (GType type,
|
|
gboolean uncached)
|
|
{
|
|
TypeNode *node = lookup_type_node_L (type);
|
|
|
|
g_return_if_fail (node != NULL && node->plugin != NULL);
|
|
|
|
if (!node->data || node->data->common.ref_count == 0)
|
|
{
|
|
g_warning ("cannot drop last reference to unreferenced type `%s'",
|
|
type_descriptive_name_U (type));
|
|
return;
|
|
}
|
|
|
|
if (node->is_classed && node->data && node->data->class.class && static_n_class_cache_funcs)
|
|
{
|
|
guint i;
|
|
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
G_READ_LOCK (&type_rw_lock);
|
|
for (i = 0; i < static_n_class_cache_funcs; i++)
|
|
{
|
|
GTypeClassCacheFunc cache_func = static_class_cache_funcs[i].cache_func;
|
|
gpointer cache_data = static_class_cache_funcs[i].cache_data;
|
|
gboolean need_break;
|
|
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
need_break = cache_func (cache_data, node->data->class.class);
|
|
G_READ_LOCK (&type_rw_lock);
|
|
if (!node->data || node->data->common.ref_count == 0)
|
|
INVALID_RECURSION ("GType class cache function ", cache_func, NODE_NAME (node));
|
|
if (need_break)
|
|
break;
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
}
|
|
|
|
if (node->data->common.ref_count > 1) /* may have been re-referenced meanwhile */
|
|
node->data->common.ref_count -= 1;
|
|
else
|
|
{
|
|
GType ptype = NODE_PARENT_TYPE (node);
|
|
TypeData *tdata;
|
|
|
|
node->data->common.ref_count = 0;
|
|
|
|
if (node->is_instantiatable && node->data->instance.mem_chunk)
|
|
{
|
|
g_mem_chunk_destroy (node->data->instance.mem_chunk);
|
|
node->data->instance.mem_chunk = NULL;
|
|
}
|
|
|
|
tdata = node->data;
|
|
if (node->is_classed && tdata->class.class)
|
|
{
|
|
if (node->n_ifaces)
|
|
type_data_finalize_class_ifaces_Wm (node);
|
|
node->data = NULL;
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
type_data_finalize_class_U (node, &tdata->class);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
}
|
|
else
|
|
node->data = NULL;
|
|
|
|
if (tdata->common.value_table)
|
|
{
|
|
g_free (tdata->common.value_table->collect_format);
|
|
g_free (tdata->common.value_table->lcopy_format);
|
|
}
|
|
g_free (tdata);
|
|
|
|
if (ptype)
|
|
type_data_unref_Wm (lookup_type_node_L (ptype), FALSE);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_type_plugin_unuse (node->plugin);
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
}
|
|
}
|
|
|
|
void
|
|
g_type_add_class_cache_func (gpointer cache_data,
|
|
GTypeClassCacheFunc cache_func)
|
|
{
|
|
guint i;
|
|
|
|
g_return_if_fail (cache_func != NULL);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
i = static_n_class_cache_funcs++;
|
|
static_class_cache_funcs = g_renew (ClassCacheFunc, static_class_cache_funcs, static_n_class_cache_funcs);
|
|
static_class_cache_funcs[i].cache_data = cache_data;
|
|
static_class_cache_funcs[i].cache_func = cache_func;
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
|
|
void
|
|
g_type_remove_class_cache_func (gpointer cache_data,
|
|
GTypeClassCacheFunc cache_func)
|
|
{
|
|
gboolean found_it = FALSE;
|
|
guint i;
|
|
|
|
g_return_if_fail (cache_func != NULL);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
for (i = 0; i < static_n_class_cache_funcs; i++)
|
|
if (static_class_cache_funcs[i].cache_data == cache_data &&
|
|
static_class_cache_funcs[i].cache_func == cache_func)
|
|
{
|
|
static_n_class_cache_funcs--;
|
|
g_memmove (static_class_cache_funcs + i,
|
|
static_class_cache_funcs + i + 1,
|
|
sizeof (static_class_cache_funcs[0]) * (static_n_class_cache_funcs - i));
|
|
static_class_cache_funcs = g_renew (ClassCacheFunc, static_class_cache_funcs, static_n_class_cache_funcs);
|
|
found_it = TRUE;
|
|
break;
|
|
}
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
if (!found_it)
|
|
g_warning (G_STRLOC ": cannot remove unregistered class cache func %p with data %p",
|
|
cache_func, cache_data);
|
|
}
|
|
|
|
|
|
/* --- type registration --- */
|
|
GType
|
|
g_type_register_fundamental (GType type_id,
|
|
const gchar *type_name,
|
|
const GTypeInfo *info,
|
|
const GTypeFundamentalInfo *finfo,
|
|
GTypeFlags flags)
|
|
{
|
|
GTypeFundamentalInfo *node_finfo;
|
|
TypeNode *node;
|
|
|
|
g_return_val_if_fail (type_id > 0, 0);
|
|
g_return_val_if_fail (type_name != NULL, 0);
|
|
g_return_val_if_fail (info != NULL, 0);
|
|
g_return_val_if_fail (finfo != NULL, 0);
|
|
|
|
if (!check_type_name_U (type_name))
|
|
return 0;
|
|
if (G_TYPE_FUNDAMENTAL (type_id) != type_id)
|
|
{
|
|
g_warning ("cannot register fundamental type `%s' with non-fundamental id (%u)",
|
|
type_name,
|
|
type_id);
|
|
return 0;
|
|
}
|
|
if ((finfo->type_flags & G_TYPE_FLAG_INSTANTIATABLE) &&
|
|
!(finfo->type_flags & G_TYPE_FLAG_CLASSED))
|
|
{
|
|
g_warning ("cannot register instantiatable fundamental type `%s' as non-classed",
|
|
type_name);
|
|
return 0;
|
|
}
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
if (lookup_type_node_L (type_id))
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_warning ("cannot register existing fundamental type `%s' (as `%s')",
|
|
type_descriptive_name_U (type_id),
|
|
type_name);
|
|
return 0;
|
|
}
|
|
|
|
node = type_node_fundamental_new_W (type_id, type_name, finfo->type_flags);
|
|
node_finfo = type_node_fundamental_info_L (node);
|
|
type_add_flags_W (node, flags);
|
|
|
|
if (check_type_info_L (NULL, G_TYPE_FUNDAMENTAL (NODE_TYPE (node)), type_name, info))
|
|
type_data_make_W (node, info,
|
|
check_value_table_I (type_name, info->value_table) ? info->value_table : NULL);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
return NODE_TYPE (node);
|
|
}
|
|
|
|
GType
|
|
g_type_register_static (GType parent_type,
|
|
const gchar *type_name,
|
|
const GTypeInfo *info,
|
|
GTypeFlags flags)
|
|
{
|
|
TypeNode *pnode, *node;
|
|
GType type = 0;
|
|
|
|
g_return_val_if_fail (parent_type > 0, 0);
|
|
g_return_val_if_fail (type_name != NULL, 0);
|
|
g_return_val_if_fail (info != NULL, 0);
|
|
|
|
if (!check_type_name_U (type_name) ||
|
|
!check_derivation_U (parent_type, type_name))
|
|
return 0;
|
|
if (info->class_finalize)
|
|
{
|
|
g_warning ("class finalizer specified for static type `%s'",
|
|
type_name);
|
|
return 0;
|
|
}
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
pnode = lookup_type_node_L (parent_type);
|
|
type_data_ref_Wm (pnode);
|
|
if (check_type_info_L (pnode, G_TYPE_FUNDAMENTAL (parent_type), type_name, info))
|
|
{
|
|
node = type_node_new_W (pnode, type_name, NULL);
|
|
type_add_flags_W (node, flags);
|
|
type = NODE_TYPE (node);
|
|
type_data_make_W (node, info,
|
|
check_value_table_I (type_name, info->value_table) ? info->value_table : NULL);
|
|
}
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
return type;
|
|
}
|
|
|
|
GType
|
|
g_type_register_dynamic (GType parent_type,
|
|
const gchar *type_name,
|
|
GTypePlugin *plugin,
|
|
GTypeFlags flags)
|
|
{
|
|
TypeNode *pnode, *node;
|
|
GType type;
|
|
|
|
g_return_val_if_fail (parent_type > 0, 0);
|
|
g_return_val_if_fail (type_name != NULL, 0);
|
|
g_return_val_if_fail (plugin != NULL, 0);
|
|
|
|
if (!check_type_name_U (type_name) ||
|
|
!check_derivation_U (parent_type, type_name) ||
|
|
!check_plugin_U (plugin, TRUE, FALSE, type_name))
|
|
return 0;
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
pnode = lookup_type_node_L (parent_type);
|
|
node = type_node_new_W (pnode, type_name, plugin);
|
|
type_add_flags_W (node, flags);
|
|
type = NODE_TYPE (node);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
return type;
|
|
}
|
|
|
|
void
|
|
g_type_add_interface_static (GType instance_type,
|
|
GType interface_type,
|
|
const GInterfaceInfo *info)
|
|
{
|
|
/* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
|
|
g_return_if_fail (G_TYPE_IS_INSTANTIATABLE (instance_type));
|
|
g_return_if_fail (g_type_parent (interface_type) == G_TYPE_INTERFACE);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
if (check_add_interface_L (instance_type, interface_type))
|
|
{
|
|
TypeNode *node = lookup_type_node_L (instance_type);
|
|
TypeNode *iface = lookup_type_node_L (interface_type);
|
|
|
|
if (check_interface_info_L (iface, NODE_TYPE (node), info))
|
|
type_add_interface_W (node, iface, info, NULL);
|
|
}
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
|
|
void
|
|
g_type_add_interface_dynamic (GType instance_type,
|
|
GType interface_type,
|
|
GTypePlugin *plugin)
|
|
{
|
|
TypeNode *node;
|
|
|
|
/* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
|
|
g_return_if_fail (G_TYPE_IS_INSTANTIATABLE (instance_type));
|
|
g_return_if_fail (g_type_parent (interface_type) == G_TYPE_INTERFACE);
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (instance_type);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
if (!check_plugin_U (plugin, FALSE, TRUE, NODE_NAME (node)))
|
|
return;
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
if (check_add_interface_L (instance_type, interface_type))
|
|
{
|
|
TypeNode *iface = lookup_type_node_L (interface_type);
|
|
|
|
type_add_interface_W (node, iface, NULL, plugin);
|
|
}
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
|
|
|
|
/* --- public API functions --- */
|
|
gpointer
|
|
g_type_class_ref (GType type)
|
|
{
|
|
TypeNode *node;
|
|
|
|
/* optimize for common code path
|
|
*/
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node && node->is_classed && node->data &&
|
|
node->data->class.class && node->data->common.ref_count > 0)
|
|
{
|
|
type_data_ref_Wm (node);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
return node->data->class.class;
|
|
}
|
|
|
|
if (!node || !node->is_classed ||
|
|
(node->data && node->data->common.ref_count < 1))
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_warning ("cannot retrive class for invalid (unclassed) type `%s'",
|
|
type_descriptive_name_U (type));
|
|
return NULL;
|
|
}
|
|
|
|
type_data_ref_Wm (node);
|
|
|
|
if (!node->data->class.class)
|
|
{
|
|
GType ptype = NODE_PARENT_TYPE (node);
|
|
GTypeClass *pclass = NULL;
|
|
|
|
if (ptype)
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
pclass = g_type_class_ref (ptype);
|
|
if (node->data->class.class)
|
|
INVALID_RECURSION ("g_type_plugin_*", node->plugin, NODE_NAME (node));
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
}
|
|
|
|
type_class_init_Wm (node, pclass);
|
|
}
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
return node->data->class.class;
|
|
}
|
|
|
|
void
|
|
g_type_class_unref (gpointer g_class)
|
|
{
|
|
TypeNode *node;
|
|
GTypeClass *class = g_class;
|
|
|
|
g_return_if_fail (g_class != NULL);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (class->g_type);
|
|
if (node && node->is_classed && node->data &&
|
|
node->data->class.class == class && node->data->common.ref_count > 0)
|
|
type_data_unref_Wm (node, FALSE);
|
|
else
|
|
g_warning ("cannot unreference class of invalid (unclassed) type `%s'",
|
|
type_descriptive_name_L (class->g_type));
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
|
|
void
|
|
g_type_class_unref_uncached (gpointer g_class)
|
|
{
|
|
TypeNode *node;
|
|
GTypeClass *class = g_class;
|
|
|
|
g_return_if_fail (g_class != NULL);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (class->g_type);
|
|
if (node && node->is_classed && node->data &&
|
|
node->data->class.class == class && node->data->common.ref_count > 0)
|
|
type_data_unref_Wm (node, TRUE);
|
|
else
|
|
g_warning ("cannot unreference class of invalid (unclassed) type `%s'",
|
|
type_descriptive_name_L (class->g_type));
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
|
|
gpointer
|
|
g_type_class_peek (GType type)
|
|
{
|
|
TypeNode *node;
|
|
gpointer class;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node && node->is_classed && node->data && node->data->class.class) /* common.ref_count _may_ be 0 */
|
|
class = node->data->class.class;
|
|
else
|
|
class = NULL;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return class;
|
|
}
|
|
|
|
gpointer
|
|
g_type_class_peek_parent (gpointer g_class)
|
|
{
|
|
TypeNode *node;
|
|
gpointer class;
|
|
|
|
g_return_val_if_fail (g_class != NULL, NULL);
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (G_TYPE_FROM_CLASS (g_class));
|
|
if (node && node->is_classed && node->data && NODE_PARENT_TYPE (node))
|
|
{
|
|
node = lookup_type_node_L (NODE_PARENT_TYPE (node));
|
|
class = node->data->class.class;
|
|
}
|
|
else
|
|
class = NULL;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return class;
|
|
}
|
|
|
|
gpointer
|
|
g_type_interface_peek (gpointer instance_class,
|
|
GType iface_type)
|
|
{
|
|
TypeNode *node;
|
|
TypeNode *iface;
|
|
gpointer vtable = NULL;
|
|
GTypeClass *class = instance_class;
|
|
|
|
g_return_val_if_fail (instance_class != NULL, NULL);
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (class->g_type);
|
|
iface = lookup_type_node_L (iface_type);
|
|
if (node && node->is_instantiatable && iface)
|
|
{
|
|
IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
|
|
|
|
if (entry && entry->vtable)
|
|
vtable = entry->vtable;
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return vtable;
|
|
}
|
|
|
|
GTypeValueTable*
|
|
g_type_value_table_peek (GType type)
|
|
{
|
|
TypeNode *node;
|
|
GTypeValueTable *vtable = NULL;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node && node->data && node->data->common.ref_count > 0 &&
|
|
node->data->common.value_table->value_init)
|
|
vtable = node->data->common.value_table;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return vtable;
|
|
}
|
|
|
|
G_CONST_RETURN gchar*
|
|
g_type_name (GType type)
|
|
{
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return node ? NODE_NAME (node) : NULL;
|
|
}
|
|
|
|
GQuark
|
|
g_type_qname (GType type)
|
|
{
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return node ? node->qname : 0;
|
|
}
|
|
|
|
GType
|
|
g_type_from_name (const gchar *name)
|
|
{
|
|
GType type = 0;
|
|
GQuark quark;
|
|
|
|
g_return_val_if_fail (name != NULL, 0);
|
|
|
|
quark = g_quark_try_string (name);
|
|
if (quark)
|
|
{
|
|
G_READ_LOCK (&type_rw_lock);
|
|
type = GPOINTER_TO_UINT (g_hash_table_lookup (static_type_nodes_ht, GUINT_TO_POINTER (quark)));
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
}
|
|
|
|
return type;
|
|
}
|
|
|
|
GType
|
|
g_type_parent (GType type)
|
|
{
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return node ? NODE_PARENT_TYPE (node) : 0;
|
|
}
|
|
|
|
GType
|
|
g_type_next_base (GType type,
|
|
GType base_type)
|
|
{
|
|
GType atype = 0;
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node)
|
|
{
|
|
TypeNode *base_node = lookup_type_node_L (base_type);
|
|
|
|
if (base_node && base_node->n_supers < node->n_supers)
|
|
{
|
|
guint n = node->n_supers - base_node->n_supers;
|
|
|
|
if (node->supers[n] == base_type)
|
|
atype = node->supers[n - 1];
|
|
}
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return atype;
|
|
}
|
|
|
|
gboolean
|
|
g_type_is_a (GType type,
|
|
GType iface_type)
|
|
{
|
|
gboolean is_a = FALSE;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
if (type != iface_type)
|
|
{
|
|
TypeNode *node = lookup_type_node_L (type);
|
|
|
|
if (node)
|
|
{
|
|
TypeNode *iface_node = lookup_type_node_L (iface_type);
|
|
|
|
if (iface_node)
|
|
{
|
|
if (iface_node->is_iface && node->is_instantiatable)
|
|
is_a = type_lookup_iface_entry_L (node, iface_node) != NULL;
|
|
else if (iface_node->n_supers <= node->n_supers)
|
|
is_a = node->supers[node->n_supers - iface_node->n_supers] == iface_type;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
is_a = lookup_type_node_L (type) != NULL;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return is_a;
|
|
}
|
|
|
|
guint
|
|
g_type_fundamental_branch_last (GType type)
|
|
{
|
|
GType ftype = G_TYPE_FUNDAMENTAL (type);
|
|
guint last_type;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
last_type = ftype < static_last_fundamental_id ? static_branch_seqnos[ftype] : 0;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return last_type;
|
|
}
|
|
|
|
GType* /* free result */
|
|
g_type_children (GType type,
|
|
guint *n_children)
|
|
{
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node)
|
|
{
|
|
GType *children = g_new (GType, node->n_children + 1);
|
|
|
|
memcpy (children, node->children, sizeof (GType) * node->n_children);
|
|
children[node->n_children] = 0;
|
|
|
|
if (n_children)
|
|
*n_children = node->n_children;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return children;
|
|
}
|
|
else
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
if (n_children)
|
|
*n_children = 0;
|
|
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
GType* /* free result */
|
|
g_type_interfaces (GType type,
|
|
guint *n_interfaces)
|
|
{
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node && node->is_instantiatable)
|
|
{
|
|
GType *ifaces = g_new (GType, node->n_ifaces + 1);
|
|
guint i;
|
|
|
|
for (i = 0; i < node->n_ifaces; i++)
|
|
ifaces[i] = node->private.iface_entries[i].iface_type;
|
|
ifaces[i] = 0;
|
|
|
|
if (n_interfaces)
|
|
*n_interfaces = node->n_ifaces;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return ifaces;
|
|
}
|
|
else
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
if (n_interfaces)
|
|
*n_interfaces = 0;
|
|
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
typedef struct _QData QData;
|
|
struct _GData
|
|
{
|
|
guint n_qdatas;
|
|
QData *qdatas;
|
|
};
|
|
struct _QData
|
|
{
|
|
GQuark quark;
|
|
gpointer data;
|
|
};
|
|
|
|
static inline gpointer
|
|
type_get_qdata_L (TypeNode *node,
|
|
GQuark quark)
|
|
{
|
|
GData *gdata = node->global_gdata;
|
|
|
|
if (quark && gdata && gdata->n_qdatas)
|
|
{
|
|
QData *qdatas = gdata->qdatas - 1;
|
|
guint n_qdatas = gdata->n_qdatas;
|
|
|
|
do
|
|
{
|
|
guint i;
|
|
QData *check;
|
|
|
|
i = (n_qdatas + 1) / 2;
|
|
check = qdatas + i;
|
|
if (quark == check->quark)
|
|
return check->data;
|
|
else if (quark > check->quark)
|
|
{
|
|
n_qdatas -= i;
|
|
qdatas = check;
|
|
}
|
|
else /* if (quark < check->quark) */
|
|
n_qdatas = i - 1;
|
|
}
|
|
while (n_qdatas);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
gpointer
|
|
g_type_get_qdata (GType type,
|
|
GQuark quark)
|
|
{
|
|
TypeNode *node;
|
|
gpointer data;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node)
|
|
{
|
|
data = type_get_qdata_L (node, quark);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
}
|
|
else
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
g_return_val_if_fail (node != NULL, NULL);
|
|
data = NULL;
|
|
}
|
|
return data;
|
|
}
|
|
|
|
static inline void
|
|
type_set_qdata_W (TypeNode *node,
|
|
GQuark quark,
|
|
gpointer data)
|
|
{
|
|
GData *gdata;
|
|
QData *qdata;
|
|
guint i;
|
|
|
|
/* setup qdata list if necessary */
|
|
if (!node->global_gdata)
|
|
node->global_gdata = g_new0 (GData, 1);
|
|
gdata = node->global_gdata;
|
|
|
|
/* try resetting old data */
|
|
qdata = gdata->qdatas;
|
|
for (i = 0; i < gdata->n_qdatas; i++)
|
|
if (qdata[i].quark == quark)
|
|
{
|
|
qdata[i].data = data;
|
|
return;
|
|
}
|
|
|
|
/* add new entry */
|
|
gdata->n_qdatas++;
|
|
gdata->qdatas = g_renew (QData, gdata->qdatas, gdata->n_qdatas);
|
|
qdata = gdata->qdatas;
|
|
for (i = 0; i < gdata->n_qdatas - 1; i++)
|
|
if (qdata[i].quark > quark)
|
|
break;
|
|
g_memmove (qdata + i + 1, qdata + i, sizeof (qdata[0]) * (gdata->n_qdatas - i - 1));
|
|
qdata[i].quark = quark;
|
|
qdata[i].data = data;
|
|
}
|
|
|
|
void
|
|
g_type_set_qdata (GType type,
|
|
GQuark quark,
|
|
gpointer data)
|
|
{
|
|
TypeNode *node;
|
|
|
|
g_return_if_fail (quark != 0);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node)
|
|
{
|
|
type_set_qdata_W (node, quark, data);
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
}
|
|
else
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
g_return_if_fail (node != NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
type_add_flags_W (TypeNode *node,
|
|
GTypeFlags flags)
|
|
{
|
|
guint dflags;
|
|
|
|
g_return_if_fail ((flags & ~TYPE_FLAG_MASK) == 0);
|
|
g_return_if_fail (node != NULL);
|
|
|
|
if ((flags & G_TYPE_FLAG_ABSTRACT) && node->is_classed && node->data && node->data->class.class)
|
|
g_warning ("tagging type `%s' as abstract after class initialization", NODE_NAME (node));
|
|
dflags = GPOINTER_TO_UINT (type_get_qdata_L (node, static_quark_type_flags));
|
|
dflags |= flags;
|
|
type_set_qdata_W (node, static_quark_type_flags, GUINT_TO_POINTER (dflags));
|
|
}
|
|
|
|
|
|
/* --- implementation details --- */
|
|
gboolean
|
|
g_type_check_flags (GType type,
|
|
guint flags)
|
|
{
|
|
TypeNode *node;
|
|
gboolean result = FALSE;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
if (node)
|
|
{
|
|
guint fflags = flags & TYPE_FUNDAMENTAL_FLAG_MASK;
|
|
guint tflags = flags & TYPE_FLAG_MASK;
|
|
|
|
if (fflags)
|
|
{
|
|
GTypeFundamentalInfo *finfo = type_node_fundamental_info_L (node);
|
|
|
|
fflags = (finfo->type_flags & fflags) == fflags;
|
|
}
|
|
else
|
|
fflags = TRUE;
|
|
|
|
if (tflags)
|
|
tflags = (tflags & GPOINTER_TO_UINT (type_get_qdata_L (node, static_quark_type_flags))) == tflags;
|
|
else
|
|
tflags = TRUE;
|
|
|
|
result = tflags && fflags;
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return result;
|
|
}
|
|
|
|
GTypePlugin*
|
|
g_type_get_plugin (GType type)
|
|
{
|
|
TypeNode *node;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (type);
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return node ? node->plugin : NULL;
|
|
}
|
|
|
|
GTypePlugin*
|
|
g_type_interface_get_plugin (GType instance_type,
|
|
GType interface_type)
|
|
{
|
|
TypeNode *node;
|
|
TypeNode *iface;
|
|
|
|
g_return_val_if_fail (G_TYPE_IS_INTERFACE (interface_type), NULL);
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (instance_type);
|
|
iface = lookup_type_node_L (interface_type);
|
|
if (node && iface)
|
|
{
|
|
IFaceHolder *iholder = iface->private.iface_conformants;
|
|
|
|
while (iholder && iholder->instance_type != instance_type)
|
|
iholder = iholder->next;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
if (iholder)
|
|
return iholder->plugin;
|
|
}
|
|
else
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
g_return_val_if_fail (node == NULL, NULL);
|
|
g_return_val_if_fail (iface == NULL, NULL);
|
|
|
|
g_warning (G_STRLOC ": attempt to look up plugin for invalid instance/interface type pair.");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
GType
|
|
g_type_fundamental_last (void)
|
|
{
|
|
GType type;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
type = static_last_fundamental_id;
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return type;
|
|
}
|
|
|
|
gboolean
|
|
g_type_instance_is_a (GTypeInstance *type_instance,
|
|
GType iface_type)
|
|
{
|
|
/* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
|
|
return (type_instance && type_instance->g_class &&
|
|
G_TYPE_IS_INSTANTIATABLE (type_instance->g_class->g_type) &&
|
|
g_type_is_a (type_instance->g_class->g_type, iface_type));
|
|
}
|
|
|
|
gboolean
|
|
g_type_class_is_a (GTypeClass *type_class,
|
|
GType is_a_type)
|
|
{
|
|
/* G_TYPE_IS_CLASSED() is an external call: _U */
|
|
return (type_class && G_TYPE_IS_CLASSED (type_class->g_type) &&
|
|
g_type_is_a (type_class->g_type, is_a_type));
|
|
}
|
|
|
|
gboolean
|
|
g_type_value_is_a (GValue *value,
|
|
GType type)
|
|
{
|
|
TypeNode *node;
|
|
|
|
if (!value)
|
|
return FALSE;
|
|
|
|
G_READ_LOCK (&type_rw_lock);
|
|
node = lookup_type_node_L (value->g_type);
|
|
#if 0
|
|
if (!G_TYPE_IS_FUNDAMENTAL (value->g_type) && !node || !node->data)
|
|
node = lookup_type_node_L (G_TYPE_FUNDAMENTAL (value->g_type));
|
|
#endif
|
|
if (!node || !node->data || node->data->common.ref_count < 1 ||
|
|
!node->data->common.value_table->value_init)
|
|
{
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return FALSE;
|
|
}
|
|
G_READ_UNLOCK (&type_rw_lock);
|
|
|
|
return g_type_is_a (value->g_type, type);
|
|
}
|
|
|
|
gboolean
|
|
g_type_check_value (GValue *value)
|
|
{
|
|
return value && g_type_value_is_a (value, value->g_type);
|
|
}
|
|
|
|
GTypeInstance*
|
|
g_type_check_instance_cast (GTypeInstance *type_instance,
|
|
GType iface_type)
|
|
{
|
|
if (!type_instance)
|
|
{
|
|
g_warning ("invalid cast from (NULL) pointer to `%s'",
|
|
type_descriptive_name_U (iface_type));
|
|
return type_instance;
|
|
}
|
|
if (!type_instance->g_class)
|
|
{
|
|
g_warning ("invalid unclassed pointer in cast to `%s'",
|
|
type_descriptive_name_U (iface_type));
|
|
return type_instance;
|
|
}
|
|
/* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
|
|
if (!G_TYPE_IS_INSTANTIATABLE (type_instance->g_class->g_type))
|
|
{
|
|
g_warning ("invalid uninstantiatable type `%s' in cast to `%s'",
|
|
type_descriptive_name_U (type_instance->g_class->g_type),
|
|
type_descriptive_name_U (iface_type));
|
|
return type_instance;
|
|
}
|
|
if (!g_type_is_a (type_instance->g_class->g_type, iface_type))
|
|
{
|
|
g_warning ("invalid cast from `%s' to `%s'",
|
|
type_descriptive_name_U (type_instance->g_class->g_type),
|
|
type_descriptive_name_U (iface_type));
|
|
return type_instance;
|
|
}
|
|
|
|
return type_instance;
|
|
}
|
|
|
|
GTypeClass*
|
|
g_type_check_class_cast (GTypeClass *type_class,
|
|
GType is_a_type)
|
|
{
|
|
if (!type_class)
|
|
{
|
|
g_warning ("invalid class cast from (NULL) pointer to `%s'",
|
|
type_descriptive_name_U (is_a_type));
|
|
return type_class;
|
|
}
|
|
/* G_TYPE_IS_CLASSED() is an external call: _U */
|
|
if (!G_TYPE_IS_CLASSED (type_class->g_type))
|
|
{
|
|
g_warning ("invalid unclassed type `%s' in class cast to `%s'",
|
|
type_descriptive_name_U (type_class->g_type),
|
|
type_descriptive_name_U (is_a_type));
|
|
return type_class;
|
|
}
|
|
if (!g_type_is_a (type_class->g_type, is_a_type))
|
|
{
|
|
g_warning ("invalid class cast from `%s' to `%s'",
|
|
type_descriptive_name_U (type_class->g_type),
|
|
type_descriptive_name_U (is_a_type));
|
|
return type_class;
|
|
}
|
|
|
|
return type_class;
|
|
}
|
|
|
|
gboolean
|
|
g_type_check_instance (GTypeInstance *type_instance)
|
|
{
|
|
/* this function is just here to make the signal system
|
|
* conveniently elaborated on instance checks
|
|
*/
|
|
if (!type_instance)
|
|
{
|
|
g_warning ("instance is invalid (NULL) pointer");
|
|
return FALSE;
|
|
}
|
|
if (!type_instance->g_class)
|
|
{
|
|
g_warning ("instance with invalid (NULL) class pointer");
|
|
return FALSE;
|
|
}
|
|
/* G_TYPE_IS_CLASSED() is an external call: _U */
|
|
if (!G_TYPE_IS_CLASSED (type_instance->g_class->g_type))
|
|
{
|
|
g_warning ("instance of invalid unclassed type `%s'",
|
|
type_descriptive_name_U (type_instance->g_class->g_type));
|
|
return FALSE;
|
|
}
|
|
/* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
|
|
if (!G_TYPE_IS_INSTANTIATABLE (type_instance->g_class->g_type))
|
|
{
|
|
g_warning ("instance of invalid non-instantiatable type `%s'",
|
|
type_descriptive_name_U (type_instance->g_class->g_type));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* --- foreign prototypes --- */
|
|
extern void g_value_types_init (void); /* sync with gvaluetypes.c */
|
|
extern void g_enum_types_init (void); /* sync with genums.c */
|
|
extern void g_param_type_init (void); /* sync with gparam.c */
|
|
extern void g_boxed_type_init (void); /* sync with gboxed.c */
|
|
extern void g_object_type_init (void); /* sync with gobject.c */
|
|
extern void g_param_spec_types_init (void); /* sync with gparamspecs.c */
|
|
extern void g_signal_init (void); /* sync with gsignal.c */
|
|
|
|
|
|
/* --- initialization --- */
|
|
void
|
|
g_type_init (GTypeDebugFlags debug_flags)
|
|
{
|
|
G_LOCK_DEFINE_STATIC (type_init_lock);
|
|
static TypeNode *type0_node = NULL;
|
|
const gchar *env_string;
|
|
GTypeInfo info;
|
|
TypeNode *node;
|
|
GType type;
|
|
|
|
G_LOCK (type_init_lock);
|
|
|
|
G_WRITE_LOCK (&type_rw_lock);
|
|
|
|
if (static_last_fundamental_id)
|
|
{
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
G_UNLOCK (type_init_lock);
|
|
return;
|
|
}
|
|
|
|
/* setup GRuntime wide debugging flags */
|
|
_g_type_debug_flags = debug_flags & G_TYPE_DEBUG_MASK;
|
|
env_string = g_getenv ("GRUNTIME_DEBUG");
|
|
if (env_string != NULL)
|
|
{
|
|
static GDebugKey debug_keys[] = {
|
|
{ "objects", G_TYPE_DEBUG_OBJECTS },
|
|
{ "signals", G_TYPE_DEBUG_SIGNALS },
|
|
};
|
|
|
|
_g_type_debug_flags |= g_parse_debug_string (env_string,
|
|
debug_keys,
|
|
sizeof (debug_keys) / sizeof (debug_keys[0]));
|
|
env_string = NULL;
|
|
}
|
|
|
|
/* quarks */
|
|
static_quark_type_flags = g_quark_from_static_string ("GTypeFlags");
|
|
|
|
/* type qname hash table */
|
|
static_type_nodes_ht = g_hash_table_new (g_direct_hash, g_direct_equal);
|
|
|
|
/* invalid type G_TYPE_INVALID (0)
|
|
*/
|
|
static_last_fundamental_id = 1;
|
|
static_type_nodes = g_renew (TypeNode**, static_type_nodes, static_last_fundamental_id);
|
|
static_type_nodes[0] = &type0_node;
|
|
static_branch_seqnos = g_renew (GType, static_branch_seqnos, static_last_fundamental_id);
|
|
static_branch_seqnos[0] = 1;
|
|
|
|
/* void type G_TYPE_NONE
|
|
*/
|
|
node = type_node_fundamental_new_W (G_TYPE_NONE, "void", 0);
|
|
type = NODE_TYPE (node);
|
|
g_assert (type == G_TYPE_NONE);
|
|
|
|
/* interface fundamental type G_TYPE_INTERFACE (!classed)
|
|
*/
|
|
memset (&info, 0, sizeof (info));
|
|
node = type_node_fundamental_new_W (G_TYPE_INTERFACE, "GInterface", G_TYPE_FLAG_DERIVABLE);
|
|
type = NODE_TYPE (node);
|
|
type_data_make_W (node, &info, NULL);
|
|
g_assert (type == G_TYPE_INTERFACE);
|
|
|
|
G_WRITE_UNLOCK (&type_rw_lock);
|
|
|
|
/* G_TYPE_TYPE_PLUGIN
|
|
*/
|
|
g_type_plugin_get_type ();
|
|
|
|
/* G_TYPE_* value types
|
|
*/
|
|
g_value_types_init ();
|
|
|
|
/* G_TYPE_ENUM & G_TYPE_FLAGS
|
|
*/
|
|
g_enum_types_init ();
|
|
|
|
/* G_TYPE_PARAM
|
|
*/
|
|
g_param_type_init ();
|
|
|
|
/* G_TYPE_PARAM
|
|
*/
|
|
g_boxed_type_init ();
|
|
|
|
/* G_TYPE_OBJECT
|
|
*/
|
|
g_object_type_init ();
|
|
|
|
/* G_TYPE_PARAM_* pspec types
|
|
*/
|
|
g_param_spec_types_init ();
|
|
|
|
/* Signal system
|
|
*/
|
|
g_signal_init ();
|
|
|
|
G_UNLOCK (type_init_lock);
|
|
}
|