def prefcnt(debugger, command, result, dict):
"""Displays the refcount of an object."""
# We handled regular nsISupports-like refcounted objects and cycle collected
# objects.
target = debugger.GetSelectedTarget()
process = target.GetProcess()
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
obj = frame.EvaluateExpression(command)
if obj.GetError().Fail():
print "could not evaluate expression"
return
obj = utils.dereference(obj)
field = obj.GetChildMemberWithName("mRefCnt")
if field.GetError().Fail():
field = obj.GetChildMemberWithName("refCnt")
if field.GetError().Fail():
print "not a refcounted object"
return
refcnt_type = field.GetType().GetCanonicalType().GetName()
if refcnt_type == "nsAutoRefCnt":
print field.GetChildMemberWithName("mValue").GetValueAsUnsigned(0)
elif refcnt_type == "nsCycleCollectingAutoRefCnt":
print field.GetChildMemberWithName(
"mRefCntAndFlags").GetValueAsUnsigned(0) >> 2
elif refcnt_type == "mozilla::ThreadSafeAutoRefCnt":
print field.GetChildMemberWithName("mValue").GetChildMemberWithName(
"mValue").GetValueAsUnsigned(0)
elif refcnt_type == "int": # non-atomic mozilla::RefCounted object
print field.GetValueAsUnsigned(0)
elif refcnt_type == "mozilla::Atomic<int>": # atomic mozilla::RefCounted object
print field.GetChildMemberWithName("mValue").GetValueAsUnsigned(0)
else:
print "unknown mRefCnt type " + refcnt_type
def prefcnt(debugger, command, result, dict):
"""Displays the refcount of an object."""
# We handled regular nsISupports-like refcounted objects and cycle collected
# objects.
target = debugger.GetSelectedTarget()
process = target.GetProcess()
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
obj = frame.EvaluateExpression(command)
if obj.GetError().Fail():
print "could not evaluate expression"
return
obj = utils.dereference(obj)
field = obj.GetChildMemberWithName("mRefCnt")
if field.GetError().Fail():
field = obj.GetChildMemberWithName("refCnt")
if field.GetError().Fail():
print "not a refcounted object"
return
refcnt_type = field.GetType().GetCanonicalType().GetName()
if refcnt_type == "nsAutoRefCnt":
print field.GetChildMemberWithName("mValue").GetValueAsUnsigned(0)
elif refcnt_type == "nsCycleCollectingAutoRefCnt":
print field.GetChildMemberWithName("mRefCntAndFlags").GetValueAsUnsigned(0) >> 2
elif refcnt_type == "mozilla::ThreadSafeAutoRefCnt":
print field.GetChildMemberWithName("mValue").GetChildMemberWithName("mValue").GetValueAsUnsigned(0)
elif refcnt_type == "int": # non-atomic mozilla::RefCounted object
print field.GetValueAsUnsigned(0)
elif refcnt_type == "mozilla::Atomic<int>": # atomic mozilla::RefCounted object
print field.GetChildMemberWithName("mValue").GetValueAsUnsigned(0)
else:
print "unknown mRefCnt type " + refcnt_type