gobject的调试。

os posted @ 2013年8月12日 16:33 in GObject , 1727 阅读

gobjec相关学习文章的list.

gobject中，基本的gtype, 以及继承，派生关系；

gobject 类初始化，对象初始化，接口初始化，方法调用，信号发射等；需要仔细的观察；

所以我们需要函数完成2个功能：

1. 函数调用层级关系显示（类初始化，对象初始化，接口初始化...)

2. gtype/gobject父子关系，显示

 

参考gobject-query.c, 修改一下：

gtype.h:

void g_type_get_node_tree(void);


void g_type_enter_func(const char *name);
void g_type_leave_func(const char *name);

#define G_ENTER_FUNC g_type_enter_func(__FUNCTION__)
#define G_LEAVE_FUNC g_type_leave_func(__FUNCTION__)

gtype.c:

static GType static_gtype_root = G_TYPE_OBJECT;

static void
_g_type_show_nodes (GType        type,
	    GType        sibling,
	    const gchar *indent)
{
	static gchar *indent_inc = NULL;
	static guint spacing = 1;
	static gboolean recursion = TRUE;

#define	O_SPACE	" "
#define	O_ESPACE ""
#define	O_BRANCH "+"
#define	O_VLINE "|"
#define	O_LLEAF	"`"
#define	O_KEY_FILL "_"

	GType   *children;
	guint i;

	if (!type)
		return;

	if (!indent_inc)
	{
		indent_inc = g_new (gchar, strlen (O_SPACE) + 1);
		*indent_inc = 0;
		strcpy (indent_inc, O_SPACE);
	}  
  
	children = g_type_children (type, NULL);

	if (type != static_gtype_root)
		for (i = 0; i < spacing; i++)
			g_printf("%s%s\n", indent, O_VLINE);
  
	g_printf("%s%s%s%s",
				indent,
				sibling ? O_BRANCH : (type != static_gtype_root ? O_LLEAF : O_SPACE),
				O_ESPACE,
				g_type_name (type));

	for (i = strlen (g_type_name (type)); i <= strlen (indent_inc); i++)
		g_printf("%s", O_KEY_FILL);
	g_printf("\n");

	if (children && recursion)
	{
		gchar *new_indent;
		GType   *child;

		if (sibling)
			new_indent = g_strconcat (indent, O_VLINE, indent_inc, NULL);
		else
			new_indent = g_strconcat (indent, O_SPACE, indent_inc, NULL);

		for (child = children; *child; child++)
			_g_type_show_nodes (child[0], child[1], new_indent);

		g_free (new_indent);
	}

	g_free (children);
}

void g_type_get_node_tree(void)
{
	gint i;
	
  	static_gtype_root = ~0;
	for (i = 0; i <= G_TYPE_FUNDAMENTAL_MAX; i += G_TYPE_MAKE_FUNDAMENTAL (1))
	{
		const gchar *name = g_type_name (i);
		if (name)
			_g_type_show_nodes (i, 0, "");
	}

}


static guint g_static_depth = 0;

void g_type_enter_func(const char *name)
{
	guint i;
	const char *s;
	if (g_static_depth == 1)	
		g_printf(" \n");
	for (i = 0; i < g_static_depth; i++)
		g_printf("+");
	g_printf("Entering %s\n", name);
	g_static_depth++;
}

void g_type_leave_func(const char *name)
{
	const char *s;
	guint i;
	if (g_static_depth != 0) 	
        	g_static_depth--;
	if (g_static_depth < 0)  
		g_static_depth = 0;

	for (i = 0; i < g_static_depth; i++) 
		g_printf("-");
	g_printf("Leaving  %s\n", name);
}

 

修改gobject/testgobject.c

可以看到的结果：

Entering main

+Entering test_object_get_type
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  test_object_get_type

+Entering iface_base_init
-Leaving  iface_base_init

+Entering iface_base_init
-Leaving  iface_base_init

+Entering test_object_class_init
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  test_object_class_init

+Entering test_object_test_iface_init
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  test_object_test_iface_init

+Entering derived_object_get_type
++Entering test_object_get_type
--Leaving  test_object_get_type
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  derived_object_get_type

+Entering iface_base_init
-Leaving  iface_base_init

+Entering derived_object_class_init
-Leaving  derived_object_class_init

+Entering derived_object_test_iface_init
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  derived_object_test_iface_init

+Entering test_object_init
++Entering test_object_get_type
--Leaving  test_object_get_type
-Leaving  test_object_init

+Entering derived_object_init
++Entering derived_object_get_type
--Leaving  derived_object_get_type
++Entering test_object_get_type
--Leaving  test_object_get_type
++Entering test_object_get_type
--Leaving  test_object_get_type
-Leaving  derived_object_init

+Entering test_object_check_private_init
++Entering test_object_get_type
--Leaving  test_object_get_type
private data during initialization: 54321 == 54321
-Leaving  test_object_check_private_init
|
`void
|
`GInterface
  |
  +GTypePlugin
  |
  `TestIface
|
`gchar
|
`guchar
|
`gboolean
|
`gint
|
`guint
|
`glong
|
`gulong
|
`gint64
|
`guint64
|
`GEnum
|
`GFlags
|
`gfloat
|
`gdouble
|
`gchararray
|
`gpointer
  |
  `GType
|
`GBoxed
  |
  `GValueArray
|
`GParam
  |
  +GParamChar
  |
  +GParamUChar
  |
  +GParamBoolean
  |
  +GParamInt
  |
  +GParamUInt
  |
  +GParamLong
  |
  +GParamULong
  |
  +GParamInt64
  |
  +GParamUInt64
  |
  +GParamUnichar
  |
  +GParamEnum
  |
  +GParamFlags
  |
  +GParamFloat
  |
  +GParamDouble
  |
  +GParamString
  |
  +GParamParam
  |
  +GParamBoxed
  |
  +GParamPointer
  |
  +GParamValueArray
  |
  +GParamObject
  |
  +GParamOverride
  |
  +GParamGType
  |
  `GParamVariant
|
`GObject
  |
  `TestObject
    |
    `DerivedObject
|
`GVariant
|
`FooShadow1
|
`FooShadow2

+Entering test_object_get_type
-Leaving  test_object_get_type

+Entering test_object_init
++Entering test_object_get_type
--Leaving  test_object_get_type
-Leaving  test_object_init
MAIN: emit test-signal:
TestObject-Message: ::test_signal default_handler called

+Entering test_object_test_signal
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  test_object_test_signal

+Entering test_signal_accumulator
-Leaving  test_signal_accumulator
TestObject-Message: ::test_signal default_handler called

+Entering test_object_test_signal
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  test_object_test_signal

+Entering test_signal_accumulator
-Leaving  test_signal_accumulator
TestObject-Message: ::test_signal default_handler called

+Entering test_object_test_signal
++Entering test_iface_get_type
--Leaving  test_iface_get_type
-Leaving  test_object_test_signal
TestObject-Message: signal return: "<default_handler><default_handler>"
MAIN: call iface print-string on test and derived object:

+Entering iface_print_string
++Entering test_iface_get_type
--Leaving  test_iface_get_type
++Entering test_iface_get_type
--Leaving  test_iface_get_type
++Entering print_foo
Iface-FOO: "iface-string-from-test-type" from 0x9370a00
--Leaving  print_foo
-Leaving  iface_print_string

+Entering iface_print_string
++Entering test_iface_get_type
--Leaving  test_iface_get_type
++Entering test_iface_get_type
--Leaving  test_iface_get_type
++Entering print_bar
+++Entering test_iface_get_type
---Leaving  test_iface_get_type
Iface-BAR: "iface-string-from-derived-type" from 0x936aaf0
chaining: +++Entering test_iface_get_type
---Leaving  test_iface_get_type
+++Entering print_foo
Iface-FOO: "iface-string-from-derived-type" from 0x936aaf0
---Leaving  print_foo
--Leaving  print_bar
-Leaving  iface_print_string

+Entering test_object_get_type
-Leaving  test_object_get_type
private data after initialization: 54321 == 54321

Leaving  main

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zhang007z 说:
2015年10月10日 13:02

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