gstreamer/libs/gst/helpers/glib_gobject_helper.py

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##
## imported from glib: glib/glib_gdb.py
##
import gdb
import sys
if sys.version_info[0] >= 3:
long = int
# This is not quite right, as local vars may override symname
def read_global_var (symname):
return gdb.selected_frame().read_var(symname)
def g_quark_to_string (quark):
if quark is None:
return None
quark = long(quark)
if quark == 0:
return None
try:
val = read_global_var ("quarks")
max_q = long(read_global_var ("quark_seq_id"))
except:
try:
val = read_global_var ("g_quarks")
max_q = long(read_global_var ("g_quark_seq_id"))
except:
return None;
if quark < max_q:
return val[quark].string()
return None
##
## imported from glib: gobject/gobject_gdb.py
##
def g_type_to_typenode (gtype):
def lookup_fundamental_type (typenode):
if typenode == 0:
return None
val = read_global_var ("static_fundamental_type_nodes")
if val is None:
return None
return val[typenode >> 2].address
gtype = long(gtype)
typenode = gtype - gtype % 4
if typenode > (255 << 2):
typenode = gdb.Value(typenode).cast (gdb.lookup_type("TypeNode").pointer())
else:
typenode = lookup_fundamental_type (typenode)
return typenode
def g_type_to_name (gtype):
typenode = g_type_to_typenode(gtype)
if typenode != None:
return g_quark_to_string (typenode["qname"])
return None
def g_type_name_from_instance (instance):
if long(instance) != 0:
try:
inst = instance.cast (gdb.lookup_type("GTypeInstance").pointer())
klass = inst["g_class"]
gtype = klass["g_type"]
name = g_type_to_name (gtype)
return name
except RuntimeError:
pass
return None