# Xmethods for libstdc++.
-# Copyright (C) 2014 Free Software Foundation, Inc.
+# Copyright (C) 2014-2024 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
matcher_name_prefix = 'libstdc++::'
+
+def get_bool_type():
+ return gdb.lookup_type('bool')
+
+def get_std_size_type():
+ return gdb.lookup_type('std::size_t')
+
+_versioned_namespace = '__8::'
+
+def is_specialization_of(x, template_name):
+ """
+ Test whether a type is a specialization of the named class template.
+ The type can be specified as a string or a gdb.Type object.
+ The template should be the name of a class template as a string,
+ without any 'std' qualification.
+ """
+ if isinstance(x, gdb.Type):
+ x = x.tag
+ template_name = '(%s)?%s' % (_versioned_namespace, template_name)
+ return re.match(r'^std::(__\d::)?%s<.*>$' % template_name, x) is not None
+
class LibStdCxxXMethod(gdb.xmethod.XMethod):
def __init__(self, name, worker_class):
gdb.xmethod.XMethod.__init__(self, name)
# Xmethods for std::array
+
class ArrayWorkerBase(gdb.xmethod.XMethodWorker):
- def __init__(self, valtype, size):
- self._valtype = valtype
+ def __init__(self, val_type, size):
+ self._val_type = val_type
self._size = size
def null_value(self):
nullptr = gdb.parse_and_eval('(void *) 0')
- return nullptr.cast(self._valtype.pointer()).dereference()
+ return nullptr.cast(self._val_type.pointer()).dereference()
+
class ArraySizeWorker(ArrayWorkerBase):
- def __init__(self, valtype, size):
- ArrayWorkerBase.__init__(self, valtype, size)
+ def __init__(self, val_type, size):
+ ArrayWorkerBase.__init__(self, val_type, size)
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return get_std_size_type()
+
def __call__(self, obj):
return self._size
+
class ArrayEmptyWorker(ArrayWorkerBase):
- def __init__(self, valtype, size):
- ArrayWorkerBase.__init__(self, valtype, size)
+ def __init__(self, val_type, size):
+ ArrayWorkerBase.__init__(self, val_type, size)
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return get_bool_type()
+
def __call__(self, obj):
return (int(self._size) == 0)
+
class ArrayFrontWorker(ArrayWorkerBase):
- def __init__(self, valtype, size):
- ArrayWorkerBase.__init__(self, valtype, size)
+ def __init__(self, val_type, size):
+ ArrayWorkerBase.__init__(self, val_type, size)
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
if int(self._size) > 0:
return obj['_M_elems'][0]
else:
return self.null_value()
+
class ArrayBackWorker(ArrayWorkerBase):
- def __init__(self, valtype, size):
- ArrayWorkerBase.__init__(self, valtype, size)
+ def __init__(self, val_type, size):
+ ArrayWorkerBase.__init__(self, val_type, size)
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
if int(self._size) > 0:
return obj['_M_elems'][self._size - 1]
else:
return self.null_value()
+
class ArrayAtWorker(ArrayWorkerBase):
- def __init__(self, valtype, size):
- ArrayWorkerBase.__init__(self, valtype, size)
+ def __init__(self, val_type, size):
+ ArrayWorkerBase.__init__(self, val_type, size)
def get_arg_types(self):
- return gdb.lookup_type('std::size_t')
+ return get_std_size_type()
+
+ def get_result_type(self, obj, index):
+ return self._val_type
def __call__(self, obj, index):
if int(index) >= int(self._size):
((int(index), self._size)))
return obj['_M_elems'][index]
+
class ArraySubscriptWorker(ArrayWorkerBase):
- def __init__(self, valtype, size):
- ArrayWorkerBase.__init__(self, valtype, size)
+ def __init__(self, val_type, size):
+ ArrayWorkerBase.__init__(self, val_type, size)
def get_arg_types(self):
- return gdb.lookup_type('std::size_t')
+ return get_std_size_type()
+
+ def get_result_type(self, obj, index):
+ return self._val_type
def __call__(self, obj, index):
if int(self._size) > 0:
else:
return self.null_value()
+
class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::array<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'array'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
return None
return method.worker_class(value_type, size)
+
# Xmethods for std::deque
+
class DequeWorkerBase(gdb.xmethod.XMethodWorker):
- def __init__(self, elemtype):
- self._bufsize = (512 / elemtype.sizeof) or 1
+ def __init__(self, val_type):
+ self._val_type = val_type
+ self._bufsize = 512 // val_type.sizeof or 1
def size(self, obj):
- first_node = obj['_M_impl']['_M_start']['_M_node']
- last_node = obj['_M_impl']['_M_finish']['_M_node']
- cur = obj['_M_impl']['_M_finish']['_M_cur']
- first = obj['_M_impl']['_M_finish']['_M_first']
- return (last_node - first_node) * self._bufsize + (cur - first)
+ start = obj['_M_impl']['_M_start']
+ finish = obj['_M_impl']['_M_finish']
+ if start['_M_cur'] == finish['_M_cur']:
+ return 0
+ return (self._bufsize
+ * (finish['_M_node'] - start['_M_node'] - 1)
+ + (finish['_M_cur'] - finish['_M_first'])
+ + (start['_M_last'] - start['_M_cur']))
+
+ def index(self, obj, idx):
+ start = obj['_M_impl']['_M_start']
+ first_node_size = start['_M_last'] - start['_M_cur']
+ if idx < first_node_size:
+ return start['_M_cur'][idx]
+ idx = idx - first_node_size
+ index_node = start['_M_node'][1 + int(idx) // self._bufsize]
+ return index_node[idx % self._bufsize]
- def index(self, obj, index):
- first_node = obj['_M_impl']['_M_start']['_M_node']
- index_node = first_node + index / self._bufsize
- return index_node[0][index % self._bufsize]
class DequeEmptyWorker(DequeWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return get_bool_type()
+
def __call__(self, obj):
return (obj['_M_impl']['_M_start']['_M_cur'] ==
obj['_M_impl']['_M_finish']['_M_cur'])
+
class DequeSizeWorker(DequeWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return get_std_size_type()
+
def __call__(self, obj):
return self.size(obj)
+
class DequeFrontWorker(DequeWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
return obj['_M_impl']['_M_start']['_M_cur'][0]
+
class DequeBackWorker(DequeWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
if (obj['_M_impl']['_M_finish']['_M_cur'] ==
- obj['_M_impl']['_M_finish']['_M_first']):
+ obj['_M_impl']['_M_finish']['_M_first']):
prev_node = obj['_M_impl']['_M_finish']['_M_node'] - 1
return prev_node[0][self._bufsize - 1]
else:
return obj['_M_impl']['_M_finish']['_M_cur'][-1]
+
class DequeSubscriptWorker(DequeWorkerBase):
def get_arg_types(self):
- return gdb.lookup_type('std::size_t')
+ return get_std_size_type()
+
+ def get_result_type(self, obj, subscript):
+ return self._val_type
def __call__(self, obj, subscript):
return self.index(obj, subscript)
+
class DequeAtWorker(DequeWorkerBase):
def get_arg_types(self):
- return gdb.lookup_type('std::size_t')
+ return get_std_size_type()
+
+ def get_result_type(self, obj, index):
+ return self._val_type
def __call__(self, obj, index):
deque_size = int(self.size(obj))
raise IndexError('Deque index "%d" should not be >= %d.' %
(int(index), deque_size))
else:
- return self.index(obj, index)
+ return self.index(obj, index)
+
class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::deque<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'deque'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
# Xmethods for std::forward_list
+
class ForwardListWorkerBase(gdb.xmethod.XMethodMatcher):
- def __init__(self, elem_type, node_type):
- self._elem_type = elem_type
+ def __init__(self, val_type, node_type):
+ self._val_type = val_type
self._node_type = node_type
def get_arg_types(self):
return None
+
class ForwardListEmptyWorker(ForwardListWorkerBase):
+ def get_result_type(self, obj):
+ return get_bool_type()
+
def __call__(self, obj):
return obj['_M_impl']['_M_head']['_M_next'] == 0
+
class ForwardListFrontWorker(ForwardListWorkerBase):
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
node = obj['_M_impl']['_M_head']['_M_next'].cast(self._node_type)
- elem_address = node['_M_storage']['_M_storage'].address
- return elem_address.cast(self._elem_type.pointer()).dereference()
+ val_address = node['_M_storage']['_M_storage'].address
+ return val_address.cast(self._val_type.pointer()).dereference()
+
class ForwardListMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::forward_list<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'forward_list'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
return None
- elem_type = class_type.template_argument(0)
+ val_type = class_type.template_argument(0)
node_type = gdb.lookup_type(str(class_type) + '::_Node').pointer()
- return method.worker_class(elem_type, node_type)
+ return method.worker_class(val_type, node_type)
# Xmethods for std::list
+
class ListWorkerBase(gdb.xmethod.XMethodWorker):
- def __init__(self, node_type):
+ def __init__(self, val_type, node_type):
+ self._val_type = val_type
self._node_type = node_type
def get_arg_types(self):
return None
+ def get_value_from_node(self, node):
+ node = node.dereference()
+ if node.type.fields()[1].name == '_M_data':
+ # C++03 implementation, node contains the value as a member
+ return node['_M_data']
+ # C++11 implementation, node stores value in __aligned_membuf
+ addr = node['_M_storage'].address
+ return addr.cast(self._val_type.pointer()).dereference()
+
+
class ListEmptyWorker(ListWorkerBase):
+ def get_result_type(self, obj):
+ return get_bool_type()
+
def __call__(self, obj):
base_node = obj['_M_impl']['_M_node']
if base_node['_M_next'] == base_node.address:
else:
return False
+
class ListSizeWorker(ListWorkerBase):
+ def get_result_type(self, obj):
+ return get_std_size_type()
+
def __call__(self, obj):
begin_node = obj['_M_impl']['_M_node']['_M_next']
end_node = obj['_M_impl']['_M_node'].address
size += 1
return size
+
class ListFrontWorker(ListWorkerBase):
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
node = obj['_M_impl']['_M_node']['_M_next'].cast(self._node_type)
- return node['_M_data']
+ return self.get_value_from_node(node)
+
class ListBackWorker(ListWorkerBase):
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
prev_node = obj['_M_impl']['_M_node']['_M_prev'].cast(self._node_type)
- return prev_node['_M_data']
+ return self.get_value_from_node(prev_node)
+
class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::list<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, '(__cxx11::)?list'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
return None
+ val_type = class_type.template_argument(0)
node_type = gdb.lookup_type(str(class_type) + '::_Node').pointer()
- return method.worker_class(node_type)
+ return method.worker_class(val_type, node_type)
# Xmethods for std::vector
+
class VectorWorkerBase(gdb.xmethod.XMethodWorker):
- def __init__(self, elemtype):
- self._elemtype = elemtype
+ def __init__(self, val_type):
+ self._val_type = val_type
def size(self, obj):
- if self._elemtype.code == gdb.TYPE_CODE_BOOL:
+ if self._val_type.code == gdb.TYPE_CODE_BOOL:
start = obj['_M_impl']['_M_start']['_M_p']
finish = obj['_M_impl']['_M_finish']['_M_p']
finish_offset = obj['_M_impl']['_M_finish']['_M_offset']
return obj['_M_impl']['_M_finish'] - obj['_M_impl']['_M_start']
def get(self, obj, index):
- if self._elemtype.code == gdb.TYPE_CODE_BOOL:
+ if self._val_type.code == gdb.TYPE_CODE_BOOL:
start = obj['_M_impl']['_M_start']['_M_p']
bit_size = start.dereference().type.sizeof * 8
- valp = start + index / bit_size
+ valp = start + index // bit_size
offset = index % bit_size
return (valp.dereference() & (1 << offset)) > 0
else:
return obj['_M_impl']['_M_start'][index]
+
class VectorEmptyWorker(VectorWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return get_bool_type()
+
def __call__(self, obj):
return int(self.size(obj)) == 0
+
class VectorSizeWorker(VectorWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return get_std_size_type()
+
def __call__(self, obj):
return self.size(obj)
+
class VectorFrontWorker(VectorWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
return self.get(obj, 0)
+
class VectorBackWorker(VectorWorkerBase):
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._val_type
+
def __call__(self, obj):
return self.get(obj, int(self.size(obj)) - 1)
+
class VectorAtWorker(VectorWorkerBase):
def get_arg_types(self):
- return gdb.lookup_type('std::size_t')
+ return get_std_size_type()
+
+ def get_result_type(self, obj, index):
+ return self._val_type
def __call__(self, obj, index):
size = int(self.size(obj))
((int(index), size)))
return self.get(obj, int(index))
+
class VectorSubscriptWorker(VectorWorkerBase):
def get_arg_types(self):
- return gdb.lookup_type('std::size_t')
+ return get_std_size_type()
+
+ def get_result_type(self, obj, subscript):
+ return self._val_type
def __call__(self, obj, subscript):
return self.get(obj, int(subscript))
+
class VectorMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::vector<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'vector'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
return None
return method.worker_class(class_type.template_argument(0))
+# Xmethods for associative containers
+
+
+class AssociativeContainerWorkerBase(gdb.xmethod.XMethodWorker):
+ def __init__(self, unordered):
+ self._unordered = unordered
+
+ def node_count(self, obj):
+ if self._unordered:
+ return obj['_M_h']['_M_element_count']
+ else:
+ return obj['_M_t']['_M_impl']['_M_node_count']
+
+ def get_arg_types(self):
+ return None
+
+
+class AssociativeContainerEmptyWorker(AssociativeContainerWorkerBase):
+ def get_result_type(self, obj):
+ return get_bool_type()
+
+ def __call__(self, obj):
+ return int(self.node_count(obj)) == 0
+
+
+class AssociativeContainerSizeWorker(AssociativeContainerWorkerBase):
+ def get_result_type(self, obj):
+ return get_std_size_type()
+
+ def __call__(self, obj):
+ return self.node_count(obj)
+
+
+class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
+ def __init__(self, name):
+ gdb.xmethod.XMethodMatcher.__init__(self,
+ matcher_name_prefix + name)
+ self._name = name
+ self._method_dict = {
+ 'size': LibStdCxxXMethod('size', AssociativeContainerSizeWorker),
+ 'empty': LibStdCxxXMethod('empty',
+ AssociativeContainerEmptyWorker),
+ }
+ self.methods = [self._method_dict[m] for m in self._method_dict]
+
+ def match(self, class_type, method_name):
+ if not is_specialization_of(class_type, self._name):
+ return None
+ method = self._method_dict.get(method_name)
+ if method is None or not method.enabled:
+ return None
+ unordered = 'unordered' in self._name
+ return method.worker_class(unordered)
+
# Xmethods for std::unique_ptr
+
class UniquePtrGetWorker(gdb.xmethod.XMethodWorker):
- def __init__(self):
- self.name = 'get'
- self.enabled = True
+ """
+ Implement std::unique_ptr<T>::get() and std::unique_ptr<T>::operator->().
+ """
+
+ def __init__(self, elem_type):
+ self._is_array = elem_type.code == gdb.TYPE_CODE_ARRAY
+ if self._is_array:
+ self._elem_type = elem_type.target()
+ else:
+ self._elem_type = elem_type
def get_arg_types(self):
return None
+ def get_result_type(self, obj):
+ return self._elem_type.pointer()
+
+ def _supports(self, method_name):
+ # operator-> is not supported for unique_ptr<T[]>
+ return method_name == 'get' or not self._is_array
+
def __call__(self, obj):
- return obj['_M_t']['_M_head_impl']
+ impl_type = obj.dereference().type.fields()[0].type.tag
+ # Check for new implementations first:
+ if is_specialization_of(impl_type, '__uniq_ptr_(data|impl)'):
+ tuple_member = obj['_M_t']['_M_t']
+ elif is_specialization_of(impl_type, 'tuple'):
+ tuple_member = obj['_M_t']
+ else:
+ return None
+ tuple_impl_type = tuple_member.type.fields()[0].type # _Tuple_impl
+ tuple_head_type = tuple_impl_type.fields()[1].type # _Head_base
+ head_field = tuple_head_type.fields()[0]
+ if head_field.name == '_M_head_impl':
+ return tuple_member.cast(tuple_head_type)['_M_head_impl']
+ elif head_field.is_base_class:
+ return tuple_member.cast(head_field.type)
+ else:
+ return None
+
class UniquePtrDerefWorker(UniquePtrGetWorker):
- def __init__(self):
- UniquePtrGetWorker.__init__(self)
- self.name = 'operator*'
+ """Implement std::unique_ptr<T>::operator*()."""
+
+ def __init__(self, elem_type):
+ UniquePtrGetWorker.__init__(self, elem_type)
+
+ def get_result_type(self, obj):
+ return self._elem_type
+
+ def _supports(self, method_name):
+ # operator* is not supported for unique_ptr<T[]>
+ return not self._is_array
def __call__(self, obj):
return UniquePtrGetWorker.__call__(self, obj).dereference()
+
+class UniquePtrSubscriptWorker(UniquePtrGetWorker):
+ """Implement std::unique_ptr<T>::operator[](size_t)."""
+
+ def __init__(self, elem_type):
+ UniquePtrGetWorker.__init__(self, elem_type)
+
+ def get_arg_types(self):
+ return get_std_size_type()
+
+ def get_result_type(self, obj, index):
+ return self._elem_type
+
+ def _supports(self, method_name):
+ # operator[] is only supported for unique_ptr<T[]>
+ return self._is_array
+
+ def __call__(self, obj, index):
+ return UniquePtrGetWorker.__call__(self, obj)[index]
+
+
class UniquePtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
matcher_name_prefix + 'unique_ptr')
- self._get_worker = UniquePtrGetWorker()
- self._deref_worker = UniquePtrDerefWorker()
- self.methods = [self._get_worker, self._deref_worker]
+ self._method_dict = {
+ 'get': LibStdCxxXMethod('get', UniquePtrGetWorker),
+ 'operator->': LibStdCxxXMethod('operator->', UniquePtrGetWorker),
+ 'operator*': LibStdCxxXMethod('operator*', UniquePtrDerefWorker),
+ 'operator[]': LibStdCxxXMethod('operator[]', UniquePtrSubscriptWorker),
+ }
+ self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::unique_ptr<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'unique_ptr'):
+ return None
+ method = self._method_dict.get(method_name)
+ if method is None or not method.enabled:
return None
- if method_name == 'operator*' and self._deref_worker.enabled:
- return self._deref_worker
- elif method_name == 'get' and self._get_worker.enabled:
- return self._get_worker
+ worker = method.worker_class(class_type.template_argument(0))
+ if worker._supports(method_name):
+ return worker
+ return None
+
+# Xmethods for std::shared_ptr
+
+
+class SharedPtrGetWorker(gdb.xmethod.XMethodWorker):
+ """
+ Implements std::shared_ptr<T>::get() and std::shared_ptr<T>::operator->().
+ """
+
+ def __init__(self, elem_type):
+ self._is_array = elem_type.code == gdb.TYPE_CODE_ARRAY
+ if self._is_array:
+ self._elem_type = elem_type.target()
+ else:
+ self._elem_type = elem_type
+
+ def get_arg_types(self):
+ return None
+
+ def get_result_type(self, obj):
+ return self._elem_type.pointer()
+
+ def _supports(self, method_name):
+ # operator-> is not supported for shared_ptr<T[]>
+ return method_name == 'get' or not self._is_array
+
+ def __call__(self, obj):
+ return obj['_M_ptr']
+
+
+class SharedPtrDerefWorker(SharedPtrGetWorker):
+ """Implement std::shared_ptr<T>::operator*()."""
+
+ def __init__(self, elem_type):
+ SharedPtrGetWorker.__init__(self, elem_type)
+
+ def get_result_type(self, obj):
+ return self._elem_type
+
+ def _supports(self, method_name):
+ # operator* is not supported for shared_ptr<T[]>
+ return not self._is_array
+
+ def __call__(self, obj):
+ return SharedPtrGetWorker.__call__(self, obj).dereference()
+
+
+class SharedPtrSubscriptWorker(SharedPtrGetWorker):
+ """Implement std::shared_ptr<T>::operator[](size_t)."""
+
+ def __init__(self, elem_type):
+ SharedPtrGetWorker.__init__(self, elem_type)
+
+ def get_arg_types(self):
+ return get_std_size_type()
+
+ def get_result_type(self, obj, index):
+ return self._elem_type
+
+ def _supports(self, method_name):
+ # operator[] is only supported for shared_ptr<T[]>
+ return self._is_array
+
+ def __call__(self, obj, index):
+ # Check bounds if _elem_type is an array of known bound
+ m = re.match(r'.*\[(\d+)]$', str(self._elem_type))
+ if m and index >= int(m.group(1)):
+ raise IndexError('shared_ptr<%s> index "%d" should not be >= %d.' %
+ (self._elem_type, int(index), int(m.group(1))))
+ return SharedPtrGetWorker.__call__(self, obj)[index]
+
+
+class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
+ """Implement std::shared_ptr<T>::use_count()."""
+
+ def __init__(self, elem_type):
+ pass
+
+ def get_arg_types(self):
+ return None
+
+ def get_result_type(self, obj):
+ return gdb.lookup_type('long')
+
+ def _supports(self, method_name):
+ return True
+
+ def __call__(self, obj):
+ refcounts = obj['_M_refcount']['_M_pi']
+ return refcounts['_M_use_count'] if refcounts else 0
+
+
+class SharedPtrUniqueWorker(SharedPtrUseCountWorker):
+ """Implement std::shared_ptr<T>::unique()."""
+
+ def __init__(self, elem_type):
+ SharedPtrUseCountWorker.__init__(self, elem_type)
+
+ def get_result_type(self, obj):
+ return gdb.lookup_type('bool')
+
+ def __call__(self, obj):
+ return SharedPtrUseCountWorker.__call__(self, obj) == 1
+
+
+class SharedPtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
+ def __init__(self):
+ gdb.xmethod.XMethodMatcher.__init__(self,
+ matcher_name_prefix + 'shared_ptr')
+ self._method_dict = {
+ 'get': LibStdCxxXMethod('get', SharedPtrGetWorker),
+ 'operator->': LibStdCxxXMethod('operator->', SharedPtrGetWorker),
+ 'operator*': LibStdCxxXMethod('operator*', SharedPtrDerefWorker),
+ 'operator[]': LibStdCxxXMethod('operator[]', SharedPtrSubscriptWorker),
+ 'use_count': LibStdCxxXMethod('use_count', SharedPtrUseCountWorker),
+ 'unique': LibStdCxxXMethod('unique', SharedPtrUniqueWorker),
+ }
+ self.methods = [self._method_dict[m] for m in self._method_dict]
+
+ def match(self, class_type, method_name):
+ if not is_specialization_of(class_type, 'shared_ptr'):
+ return None
+ method = self._method_dict.get(method_name)
+ if method is None or not method.enabled:
+ return None
+ worker = method.worker_class(class_type.template_argument(0))
+ if worker._supports(method_name):
+ return worker
+ return None
\f
+
def register_libstdcxx_xmethods(locus):
gdb.xmethod.register_xmethod_matcher(locus, ArrayMethodsMatcher())
gdb.xmethod.register_xmethod_matcher(locus, ForwardListMethodsMatcher())
gdb.xmethod.register_xmethod_matcher(locus, DequeMethodsMatcher())
gdb.xmethod.register_xmethod_matcher(locus, ListMethodsMatcher())
gdb.xmethod.register_xmethod_matcher(locus, VectorMethodsMatcher())
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('set'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('map'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('multiset'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('multimap'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('unordered_set'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('unordered_map'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('unordered_multiset'))
+ gdb.xmethod.register_xmethod_matcher(
+ locus, AssociativeContainerMethodsMatcher('unordered_multimap'))
gdb.xmethod.register_xmethod_matcher(locus, UniquePtrMethodsMatcher())
+ gdb.xmethod.register_xmethod_matcher(locus, SharedPtrMethodsMatcher())
projects / thirdparty / gcc.git / blobdiff