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gdb: refactor finding top-level pipeline

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No functional changes. Just refactoring to make it possible to reuse this
later.
This commit is contained in:
Michael Olbrich 2019-05-11 20:53:54 +02:00 committed by Tim-Philipp Müller
parent 36c2fc3bc3
commit 320a4cba4b
1 changed files with 32 additions and 24 deletions
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56
libs/gst/helpers/gst_gdb.py
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@ -251,6 +251,36 @@ def _g_value_get_value(val):
return val["data"].cast(t).dereference()
def gst_object_from_value(value):
if value.type.code != gdb.TYPE_CODE_PTR:
value = value.address
if not is_gst_type(value, "GstObject"):
raise Exception("'%s' is not a GstObject" % args[0])
return value.cast(gdb.lookup_type("GstObject").pointer())
def gst_object_pipeline(obj):
try:
while obj["parent"] != 0:
tmp = obj["parent"]
# sanity checks to handle memory corruption
if g_inherits_type(obj, "GstElement") and \
GdbGstElement(obj) not in GdbGstElement(tmp).children():
break
if g_inherits_type(obj, "GstPad") and \
GdbGstPad(obj) not in GdbGstElement(tmp).pads():
break
obj = tmp
except gdb.MemoryError:
pass
if not g_inherits_type(obj, "GstElement"):
raise Exception("Toplevel parent is not a GstElement")
return obj.cast(gdb.lookup_type("GstElement").pointer())
def element_state_to_name(state):
names = [
"VOID_PENDING",
@ -967,30 +997,8 @@ Usage: gst-dot <gst-object> <file-name>"""
if not value:
raise Exception("'%s' is not a valid object" % args[0])
if value.type.code != gdb.TYPE_CODE_PTR:
value = value.address
if not is_gst_type(value, "GstObject"):
raise Exception("'%s' is not a GstObject" % args[0])
value = value.cast(gdb.lookup_type("GstObject").pointer())
try:
while value["parent"] != 0:
tmp = value["parent"]
# sanity checks to handle memory corruption
if g_inherits_type(value, "GstElement") and \
GdbGstElement(value) not in GdbGstElement(tmp).children():
break
if g_inherits_type(value, "GstPad") and \
GdbGstPad(value) not in GdbGstElement(tmp).pads():
break
value = tmp
except gdb.MemoryError:
pass
if not g_inherits_type(value, "GstElement"):
raise Exception("Toplevel parent is not a GstElement")
value = value.cast(gdb.lookup_type("GstElement").pointer())
value = gst_object_from_value(value)
value = gst_object_pipeline(value)
dot = GdbGstElement(value).pipeline_dot()
file = open(args[1], "w")