mirror of git://gcc.gnu.org/git/gcc.git
795 lines
27 KiB
Python
795 lines
27 KiB
Python
# Xmethods for libstdc++.
|
||
|
||
# Copyright (C) 2014-2017 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
|
||
# the Free Software Foundation; either version 3 of the License, or
|
||
# (at your option) any later version.
|
||
#
|
||
# This program is distributed in the hope that it will be useful,
|
||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
# GNU General Public License for more details.
|
||
#
|
||
# You should have received a copy of the GNU General Public License
|
||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
import gdb
|
||
import gdb.xmethod
|
||
import re
|
||
|
||
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')
|
||
|
||
class LibStdCxxXMethod(gdb.xmethod.XMethod):
|
||
def __init__(self, name, worker_class):
|
||
gdb.xmethod.XMethod.__init__(self, name)
|
||
self.worker_class = worker_class
|
||
|
||
# Xmethods for std::array
|
||
|
||
class ArrayWorkerBase(gdb.xmethod.XMethodWorker):
|
||
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._val_type.pointer()).dereference()
|
||
|
||
class ArraySizeWorker(ArrayWorkerBase):
|
||
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, 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, 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, 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, val_type, size):
|
||
ArrayWorkerBase.__init__(self, val_type, size)
|
||
|
||
def get_arg_types(self):
|
||
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):
|
||
raise IndexError('Array index "%d" should not be >= %d.' %
|
||
((int(index), self._size)))
|
||
return obj['_M_elems'][index]
|
||
|
||
class ArraySubscriptWorker(ArrayWorkerBase):
|
||
def __init__(self, val_type, size):
|
||
ArrayWorkerBase.__init__(self, val_type, size)
|
||
|
||
def get_arg_types(self):
|
||
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:
|
||
return obj['_M_elems'][index]
|
||
else:
|
||
return self.null_value()
|
||
|
||
class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
||
def __init__(self):
|
||
gdb.xmethod.XMethodMatcher.__init__(self,
|
||
matcher_name_prefix + 'array')
|
||
self._method_dict = {
|
||
'size': LibStdCxxXMethod('size', ArraySizeWorker),
|
||
'empty': LibStdCxxXMethod('empty', ArrayEmptyWorker),
|
||
'front': LibStdCxxXMethod('front', ArrayFrontWorker),
|
||
'back': LibStdCxxXMethod('back', ArrayBackWorker),
|
||
'at': LibStdCxxXMethod('at', ArrayAtWorker),
|
||
'operator[]': LibStdCxxXMethod('operator[]', ArraySubscriptWorker),
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?array<.*>$', class_type.tag):
|
||
return None
|
||
method = self._method_dict.get(method_name)
|
||
if method is None or not method.enabled:
|
||
return None
|
||
try:
|
||
value_type = class_type.template_argument(0)
|
||
size = class_type.template_argument(1)
|
||
except:
|
||
return None
|
||
return method.worker_class(value_type, size)
|
||
|
||
# Xmethods for std::deque
|
||
|
||
class DequeWorkerBase(gdb.xmethod.XMethodWorker):
|
||
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)
|
||
|
||
def index(self, obj, idx):
|
||
first_node = obj['_M_impl']['_M_start']['_M_node']
|
||
index_node = first_node + int(idx) // self._bufsize
|
||
return index_node[0][idx % 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']):
|
||
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 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 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))
|
||
if int(index) >= deque_size:
|
||
raise IndexError('Deque index "%d" should not be >= %d.' %
|
||
(int(index), deque_size))
|
||
else:
|
||
return self.index(obj, index)
|
||
|
||
class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
||
def __init__(self):
|
||
gdb.xmethod.XMethodMatcher.__init__(self,
|
||
matcher_name_prefix + 'deque')
|
||
self._method_dict = {
|
||
'empty': LibStdCxxXMethod('empty', DequeEmptyWorker),
|
||
'size': LibStdCxxXMethod('size', DequeSizeWorker),
|
||
'front': LibStdCxxXMethod('front', DequeFrontWorker),
|
||
'back': LibStdCxxXMethod('back', DequeBackWorker),
|
||
'operator[]': LibStdCxxXMethod('operator[]', DequeSubscriptWorker),
|
||
'at': LibStdCxxXMethod('at', DequeAtWorker)
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?deque<.*>$', class_type.tag):
|
||
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 std::forward_list
|
||
|
||
class ForwardListWorkerBase(gdb.xmethod.XMethodMatcher):
|
||
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)
|
||
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):
|
||
matcher_name = matcher_name_prefix + 'forward_list'
|
||
gdb.xmethod.XMethodMatcher.__init__(self, matcher_name)
|
||
self._method_dict = {
|
||
'empty': LibStdCxxXMethod('empty', ForwardListEmptyWorker),
|
||
'front': LibStdCxxXMethod('front', ForwardListFrontWorker)
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?forward_list<.*>$', class_type.tag):
|
||
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(val_type, node_type)
|
||
|
||
# Xmethods for std::list
|
||
|
||
class ListWorkerBase(gdb.xmethod.XMethodWorker):
|
||
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:
|
||
return True
|
||
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 = 0
|
||
while begin_node != end_node:
|
||
begin_node = begin_node['_M_next']
|
||
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 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 self.get_value_from_node(prev_node)
|
||
|
||
class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
||
def __init__(self):
|
||
gdb.xmethod.XMethodMatcher.__init__(self,
|
||
matcher_name_prefix + 'list')
|
||
self._method_dict = {
|
||
'empty': LibStdCxxXMethod('empty', ListEmptyWorker),
|
||
'size': LibStdCxxXMethod('size', ListSizeWorker),
|
||
'front': LibStdCxxXMethod('front', ListFrontWorker),
|
||
'back': LibStdCxxXMethod('back', ListBackWorker)
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?(__cxx11::)?list<.*>$', class_type.tag):
|
||
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(val_type, node_type)
|
||
|
||
# Xmethods for std::vector
|
||
|
||
class VectorWorkerBase(gdb.xmethod.XMethodWorker):
|
||
def __init__(self, val_type):
|
||
self._val_type = val_type
|
||
|
||
def size(self, obj):
|
||
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']
|
||
bit_size = start.dereference().type.sizeof * 8
|
||
return (finish - start) * bit_size + finish_offset
|
||
else:
|
||
return obj['_M_impl']['_M_finish'] - obj['_M_impl']['_M_start']
|
||
|
||
def get(self, obj, index):
|
||
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
|
||
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 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))
|
||
if int(index) >= size:
|
||
raise IndexError('Vector index "%d" should not be >= %d.' %
|
||
((int(index), size)))
|
||
return self.get(obj, int(index))
|
||
|
||
class VectorSubscriptWorker(VectorWorkerBase):
|
||
def get_arg_types(self):
|
||
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,
|
||
matcher_name_prefix + 'vector')
|
||
self._method_dict = {
|
||
'size': LibStdCxxXMethod('size', VectorSizeWorker),
|
||
'empty': LibStdCxxXMethod('empty', VectorEmptyWorker),
|
||
'front': LibStdCxxXMethod('front', VectorFrontWorker),
|
||
'back': LibStdCxxXMethod('back', VectorBackWorker),
|
||
'at': LibStdCxxXMethod('at', VectorAtWorker),
|
||
'operator[]': LibStdCxxXMethod('operator[]',
|
||
VectorSubscriptWorker),
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?vector<.*>$', class_type.tag):
|
||
return None
|
||
method = self._method_dict.get(method_name)
|
||
if method is None or not method.enabled:
|
||
return None
|
||
return method.worker_class(class_type.template_argument(0))
|
||
|
||
# Xmethods for associative containers
|
||
|
||
class AssociativeContainerWorkerBase(gdb.xmethod.XMethodWorker):
|
||
def __init__(self, unordered):
|
||
self._unordered = unordered
|
||
|
||
def node_count(self, obj):
|
||
if self._unordered:
|
||
return obj['_M_h']['_M_element_count']
|
||
else:
|
||
return obj['_M_t']['_M_impl']['_M_node_count']
|
||
|
||
def get_arg_types(self):
|
||
return None
|
||
|
||
class AssociativeContainerEmptyWorker(AssociativeContainerWorkerBase):
|
||
def get_result_type(self, obj):
|
||
return get_bool_type()
|
||
|
||
def __call__(self, obj):
|
||
return int(self.node_count(obj)) == 0
|
||
|
||
class AssociativeContainerSizeWorker(AssociativeContainerWorkerBase):
|
||
def get_result_type(self, obj):
|
||
return get_std_size_type()
|
||
|
||
def __call__(self, obj):
|
||
return self.node_count(obj)
|
||
|
||
class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
||
def __init__(self, name):
|
||
gdb.xmethod.XMethodMatcher.__init__(self,
|
||
matcher_name_prefix + name)
|
||
self._name = name
|
||
self._method_dict = {
|
||
'size': LibStdCxxXMethod('size', AssociativeContainerSizeWorker),
|
||
'empty': LibStdCxxXMethod('empty',
|
||
AssociativeContainerEmptyWorker),
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?%s<.*>$' % self._name, class_type.tag):
|
||
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):
|
||
"Implements 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):
|
||
impl_type = obj.dereference().type.fields()[0].type.tag
|
||
if re.match('^std::(__\d+::)?__uniq_ptr_impl<.*>$', impl_type): # New implementation
|
||
return obj['_M_t']['_M_t']['_M_head_impl']
|
||
elif re.match('^std::(__\d+::)?tuple<.*>$', impl_type):
|
||
return obj['_M_t']['_M_head_impl']
|
||
return None
|
||
|
||
class UniquePtrDerefWorker(UniquePtrGetWorker):
|
||
"Implements 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):
|
||
"Implements 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._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::(__\d+::)?unique_ptr<.*>$', class_type.tag):
|
||
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
|
||
|
||
# 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):
|
||
"Implements 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):
|
||
"Implements 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('.*\[(\d+)]$', str(self._elem_type))
|
||
if m and index >= int(m.group(1)):
|
||
raise IndexError('shared_ptr<%s> index "%d" should not be >= %d.' %
|
||
(self._elem_type, int(index), int(m.group(1))))
|
||
return SharedPtrGetWorker.__call__(self, obj)[index]
|
||
|
||
class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
|
||
"Implements std::shared_ptr<T>::use_count()"
|
||
|
||
def __init__(self, elem_type):
|
||
SharedPtrUseCountWorker.__init__(self, elem_type)
|
||
|
||
def get_arg_types(self):
|
||
return None
|
||
|
||
def get_result_type(self, obj):
|
||
return gdb.lookup_type('long')
|
||
|
||
def __call__(self, obj):
|
||
refcounts = ['_M_refcount']['_M_pi']
|
||
return refcounts['_M_use_count'] if refcounts else 0
|
||
|
||
class SharedPtrUniqueWorker(SharedPtrUseCountWorker):
|
||
"Implements std::shared_ptr<T>::unique()"
|
||
|
||
def __init__(self, elem_type):
|
||
SharedPtrUseCountWorker.__init__(self, elem_type)
|
||
|
||
def get_result_type(self, obj):
|
||
return gdb.lookup_type('bool')
|
||
|
||
def __call__(self, obj):
|
||
return SharedPtrUseCountWorker.__call__(self, obj) == 1
|
||
|
||
class SharedPtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
||
def __init__(self):
|
||
gdb.xmethod.XMethodMatcher.__init__(self,
|
||
matcher_name_prefix + 'shared_ptr')
|
||
self._method_dict = {
|
||
'get': LibStdCxxXMethod('get', SharedPtrGetWorker),
|
||
'operator->': LibStdCxxXMethod('operator->', SharedPtrGetWorker),
|
||
'operator*': LibStdCxxXMethod('operator*', SharedPtrDerefWorker),
|
||
'operator[]': LibStdCxxXMethod('operator[]', SharedPtrSubscriptWorker),
|
||
'use_count': LibStdCxxXMethod('use_count', SharedPtrUseCountWorker),
|
||
'unique': LibStdCxxXMethod('unique', SharedPtrUniqueWorker),
|
||
}
|
||
self.methods = [self._method_dict[m] for m in self._method_dict]
|
||
|
||
def match(self, class_type, method_name):
|
||
if not re.match('^std::(__\d+::)?shared_ptr<.*>$', class_type.tag):
|
||
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
|
||
|
||
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())
|