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import gdb
from teachos import TeachOSBasePrinter
class KstdUniquePtrPrinter(TeachOSBasePrinter):
def __init__(self, val):
super().__init__(val)
self.__type = val.type.template_argument(0)
def to_string(self):
pointer = self.value["pointer"]
if int(pointer) == 0:
return f"kstd::unique_ptr<{self.__type}> (empty)"
return f"kstd::unique_ptr<{self.__type}>"
def children(self):
pointer = self.value["pointer"]
if int(pointer) != 0:
yield ("get()", pointer.dereference())
yield from super().children()
class KstdSharedPtrPrinter(TeachOSBasePrinter):
def __init__(self, val):
super().__init__(val)
self.__type = val.type.template_argument(0)
def to_string(self):
pointer = self.value["pointer"]
control_block = self.value["control"]
if int(pointer) == 0 or int(control_block) == 0:
return f"shared_ptr<{self.__type}> (empty)"
strong_refs = int(control_block["shared_count"]["_M_i"])
weak_refs = int(control_block["weak_count"]["_M_i"])
return (
f"shared_ptr<{self.__type}> use count {strong_refs}, weak count {weak_refs}"
)
def children(self):
pointer = self.value["pointer"]
control_block = self.value["control"]
if int(pointer) != 0:
yield ("get()", pointer.dereference())
yield from super().children()
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