| 1 | # Xmethods for libstdc++.
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| 2 |
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| 3 | # Copyright (C) 2014-2021 Free Software Foundation, Inc.
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| 4 |
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| 5 | # This program is free software; you can redistribute it and/or modify
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| 6 | # it under the terms of the GNU General Public License as published by
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| 7 | # the Free Software Foundation; either version 3 of the License, or
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| 8 | # (at your option) any later version.
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| 9 | #
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| 10 | # This program is distributed in the hope that it will be useful,
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| 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | # GNU General Public License for more details.
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| 14 | #
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| 15 | # You should have received a copy of the GNU General Public License
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| 16 | # along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 17 |
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| 18 | import gdb
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| 19 | import gdb.xmethod
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| 20 | import re
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| 21 |
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| 22 | matcher_name_prefix = 'libstdc++::'
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| 23 |
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| 24 | def get_bool_type():
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| 25 | return gdb.lookup_type('bool')
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| 26 |
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| 27 | def get_std_size_type():
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| 28 | return gdb.lookup_type('std::size_t')
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| 29 |
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| 30 | class LibStdCxxXMethod(gdb.xmethod.XMethod):
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| 31 | def __init__(self, name, worker_class):
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| 32 | gdb.xmethod.XMethod.__init__(self, name)
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| 33 | self.worker_class = worker_class
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| 34 |
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| 35 | # Xmethods for std::array
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| 36 |
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| 37 | class ArrayWorkerBase(gdb.xmethod.XMethodWorker):
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| 38 | def __init__(self, val_type, size):
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| 39 | self._val_type = val_type
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| 40 | self._size = size
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| 41 |
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| 42 | def null_value(self):
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| 43 | nullptr = gdb.parse_and_eval('(void *) 0')
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| 44 | return nullptr.cast(self._val_type.pointer()).dereference()
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| 45 |
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| 46 | class ArraySizeWorker(ArrayWorkerBase):
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| 47 | def __init__(self, val_type, size):
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| 48 | ArrayWorkerBase.__init__(self, val_type, size)
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| 49 |
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| 50 | def get_arg_types(self):
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| 51 | return None
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| 52 |
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| 53 | def get_result_type(self, obj):
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| 54 | return get_std_size_type()
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| 55 |
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| 56 | def __call__(self, obj):
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| 57 | return self._size
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| 58 |
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| 59 | class ArrayEmptyWorker(ArrayWorkerBase):
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| 60 | def __init__(self, val_type, size):
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| 61 | ArrayWorkerBase.__init__(self, val_type, size)
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| 62 |
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| 63 | def get_arg_types(self):
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| 64 | return None
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| 65 |
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| 66 | def get_result_type(self, obj):
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| 67 | return get_bool_type()
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| 68 |
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| 69 | def __call__(self, obj):
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| 70 | return (int(self._size) == 0)
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| 71 |
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| 72 | class ArrayFrontWorker(ArrayWorkerBase):
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| 73 | def __init__(self, val_type, size):
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| 74 | ArrayWorkerBase.__init__(self, val_type, size)
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| 75 |
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| 76 | def get_arg_types(self):
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| 77 | return None
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| 78 |
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| 79 | def get_result_type(self, obj):
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| 80 | return self._val_type
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| 81 |
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| 82 | def __call__(self, obj):
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| 83 | if int(self._size) > 0:
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| 84 | return obj['_M_elems'][0]
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| 85 | else:
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| 86 | return self.null_value()
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| 87 |
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| 88 | class ArrayBackWorker(ArrayWorkerBase):
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| 89 | def __init__(self, val_type, size):
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| 90 | ArrayWorkerBase.__init__(self, val_type, size)
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| 91 |
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| 92 | def get_arg_types(self):
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| 93 | return None
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| 94 |
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| 95 | def get_result_type(self, obj):
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| 96 | return self._val_type
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| 97 |
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| 98 | def __call__(self, obj):
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| 99 | if int(self._size) > 0:
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| 100 | return obj['_M_elems'][self._size - 1]
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| 101 | else:
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| 102 | return self.null_value()
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| 103 |
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| 104 | class ArrayAtWorker(ArrayWorkerBase):
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| 105 | def __init__(self, val_type, size):
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| 106 | ArrayWorkerBase.__init__(self, val_type, size)
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| 107 |
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| 108 | def get_arg_types(self):
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| 109 | return get_std_size_type()
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| 110 |
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| 111 | def get_result_type(self, obj, index):
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| 112 | return self._val_type
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| 113 |
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| 114 | def __call__(self, obj, index):
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| 115 | if int(index) >= int(self._size):
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| 116 | raise IndexError('Array index "%d" should not be >= %d.' %
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| 117 | ((int(index), self._size)))
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| 118 | return obj['_M_elems'][index]
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| 119 |
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| 120 | class ArraySubscriptWorker(ArrayWorkerBase):
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| 121 | def __init__(self, val_type, size):
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| 122 | ArrayWorkerBase.__init__(self, val_type, size)
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| 123 |
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| 124 | def get_arg_types(self):
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| 125 | return get_std_size_type()
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| 126 |
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| 127 | def get_result_type(self, obj, index):
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| 128 | return self._val_type
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| 129 |
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| 130 | def __call__(self, obj, index):
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| 131 | if int(self._size) > 0:
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| 132 | return obj['_M_elems'][index]
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| 133 | else:
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| 134 | return self.null_value()
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| 135 |
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| 136 | class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
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| 137 | def __init__(self):
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| 138 | gdb.xmethod.XMethodMatcher.__init__(self,
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| 139 | matcher_name_prefix + 'array')
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| 140 | self._method_dict = {
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| 141 | 'size': LibStdCxxXMethod('size', ArraySizeWorker),
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| 142 | 'empty': LibStdCxxXMethod('empty', ArrayEmptyWorker),
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| 143 | 'front': LibStdCxxXMethod('front', ArrayFrontWorker),
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| 144 | 'back': LibStdCxxXMethod('back', ArrayBackWorker),
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| 145 | 'at': LibStdCxxXMethod('at', ArrayAtWorker),
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| 146 | 'operator[]': LibStdCxxXMethod('operator[]', ArraySubscriptWorker),
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| 147 | }
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| 148 | self.methods = [self._method_dict[m] for m in self._method_dict]
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| 149 |
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| 150 | def match(self, class_type, method_name):
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| 151 | if not re.match('^std::(__\d+::)?array<.*>$', class_type.tag):
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| 152 | return None
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| 153 | method = self._method_dict.get(method_name)
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| 154 | if method is None or not method.enabled:
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| 155 | return None
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| 156 | try:
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| 157 | value_type = class_type.template_argument(0)
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| 158 | size = class_type.template_argument(1)
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| 159 | except:
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| 160 | return None
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| 161 | return method.worker_class(value_type, size)
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| 162 |
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| 163 | # Xmethods for std::deque
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| 164 |
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| 165 | class DequeWorkerBase(gdb.xmethod.XMethodWorker):
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| 166 | def __init__(self, val_type):
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| 167 | self._val_type = val_type
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| 168 | self._bufsize = 512 // val_type.sizeof or 1
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| 169 |
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| 170 | def size(self, obj):
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| 171 | first_node = obj['_M_impl']['_M_start']['_M_node']
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| 172 | last_node = obj['_M_impl']['_M_finish']['_M_node']
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| 173 | cur = obj['_M_impl']['_M_finish']['_M_cur']
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| 174 | first = obj['_M_impl']['_M_finish']['_M_first']
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| 175 | return (last_node - first_node) * self._bufsize + (cur - first)
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| 176 |
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| 177 | def index(self, obj, idx):
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| 178 | first_node = obj['_M_impl']['_M_start']['_M_node']
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| 179 | index_node = first_node + int(idx) // self._bufsize
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| 180 | return index_node[0][idx % self._bufsize]
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| 181 |
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| 182 | class DequeEmptyWorker(DequeWorkerBase):
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| 183 | def get_arg_types(self):
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| 184 | return None
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| 185 |
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| 186 | def get_result_type(self, obj):
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| 187 | return get_bool_type()
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| 188 |
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| 189 | def __call__(self, obj):
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| 190 | return (obj['_M_impl']['_M_start']['_M_cur'] ==
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| 191 | obj['_M_impl']['_M_finish']['_M_cur'])
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| 192 |
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| 193 | class DequeSizeWorker(DequeWorkerBase):
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| 194 | def get_arg_types(self):
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| 195 | return None
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| 196 |
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| 197 | def get_result_type(self, obj):
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| 198 | return get_std_size_type()
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| 199 |
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| 200 | def __call__(self, obj):
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| 201 | return self.size(obj)
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| 202 |
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| 203 | class DequeFrontWorker(DequeWorkerBase):
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| 204 | def get_arg_types(self):
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| 205 | return None
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| 206 |
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| 207 | def get_result_type(self, obj):
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| 208 | return self._val_type
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| 209 |
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| 210 | def __call__(self, obj):
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| 211 | return obj['_M_impl']['_M_start']['_M_cur'][0]
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| 212 |
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| 213 | class DequeBackWorker(DequeWorkerBase):
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| 214 | def get_arg_types(self):
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| 215 | return None
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| 216 |
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| 217 | def get_result_type(self, obj):
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| 218 | return self._val_type
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| 219 |
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| 220 | def __call__(self, obj):
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| 221 | if (obj['_M_impl']['_M_finish']['_M_cur'] ==
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| 222 | obj['_M_impl']['_M_finish']['_M_first']):
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| 223 | prev_node = obj['_M_impl']['_M_finish']['_M_node'] - 1
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| 224 | return prev_node[0][self._bufsize - 1]
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| 225 | else:
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| 226 | return obj['_M_impl']['_M_finish']['_M_cur'][-1]
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| 227 |
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| 228 | class DequeSubscriptWorker(DequeWorkerBase):
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| 229 | def get_arg_types(self):
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| 230 | return get_std_size_type()
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| 231 |
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| 232 | def get_result_type(self, obj, subscript):
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| 233 | return self._val_type
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| 234 |
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| 235 | def __call__(self, obj, subscript):
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| 236 | return self.index(obj, subscript)
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| 237 |
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| 238 | class DequeAtWorker(DequeWorkerBase):
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| 239 | def get_arg_types(self):
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| 240 | return get_std_size_type()
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| 241 |
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| 242 | def get_result_type(self, obj, index):
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| 243 | return self._val_type
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| 244 |
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| 245 | def __call__(self, obj, index):
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| 246 | deque_size = int(self.size(obj))
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| 247 | if int(index) >= deque_size:
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| 248 | raise IndexError('Deque index "%d" should not be >= %d.' %
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| 249 | (int(index), deque_size))
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| 250 | else:
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| 251 | return self.index(obj, index)
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| 252 |
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| 253 | class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
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| 254 | def __init__(self):
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| 255 | gdb.xmethod.XMethodMatcher.__init__(self,
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| 256 | matcher_name_prefix + 'deque')
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| 257 | self._method_dict = {
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| 258 | 'empty': LibStdCxxXMethod('empty', DequeEmptyWorker),
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| 259 | 'size': LibStdCxxXMethod('size', DequeSizeWorker),
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| 260 | 'front': LibStdCxxXMethod('front', DequeFrontWorker),
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| 261 | 'back': LibStdCxxXMethod('back', DequeBackWorker),
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| 262 | 'operator[]': LibStdCxxXMethod('operator[]', DequeSubscriptWorker),
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| 263 | 'at': LibStdCxxXMethod('at', DequeAtWorker)
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| 264 | }
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| 265 | self.methods = [self._method_dict[m] for m in self._method_dict]
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| 266 |
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| 267 | def match(self, class_type, method_name):
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| 268 | if not re.match('^std::(__\d+::)?deque<.*>$', class_type.tag):
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| 269 | return None
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| 270 | method = self._method_dict.get(method_name)
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| 271 | if method is None or not method.enabled:
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| 272 | return None
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| 273 | return method.worker_class(class_type.template_argument(0))
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| 274 |
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| 275 | # Xmethods for std::forward_list
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| 276 |
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| 277 | class ForwardListWorkerBase(gdb.xmethod.XMethodMatcher):
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| 278 | def __init__(self, val_type, node_type):
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| 279 | self._val_type = val_type
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| 280 | self._node_type = node_type
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| 281 |
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| 282 | def get_arg_types(self):
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| 283 | return None
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| 284 |
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| 285 | class ForwardListEmptyWorker(ForwardListWorkerBase):
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| 286 | def get_result_type(self, obj):
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| 287 | return get_bool_type()
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| 288 |
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| 289 | def __call__(self, obj):
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| 290 | return obj['_M_impl']['_M_head']['_M_next'] == 0
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| 291 |
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| 292 | class ForwardListFrontWorker(ForwardListWorkerBase):
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| 293 | def get_result_type(self, obj):
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| 294 | return self._val_type
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| 295 |
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| 296 | def __call__(self, obj):
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| 297 | node = obj['_M_impl']['_M_head']['_M_next'].cast(self._node_type)
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| 298 | val_address = node['_M_storage']['_M_storage'].address
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| 299 | return val_address.cast(self._val_type.pointer()).dereference()
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| 300 |
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| 301 | class ForwardListMethodsMatcher(gdb.xmethod.XMethodMatcher):
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| 302 | def __init__(self):
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| 303 | matcher_name = matcher_name_prefix + 'forward_list'
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| 304 | gdb.xmethod.XMethodMatcher.__init__(self, matcher_name)
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| 305 | self._method_dict = {
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| 306 | 'empty': LibStdCxxXMethod('empty', ForwardListEmptyWorker),
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| 307 | 'front': LibStdCxxXMethod('front', ForwardListFrontWorker)
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| 308 | }
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| 309 | self.methods = [self._method_dict[m] for m in self._method_dict]
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| 310 |
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| 311 | def match(self, class_type, method_name):
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| 312 | if not re.match('^std::(__\d+::)?forward_list<.*>$', class_type.tag):
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| 313 | return None
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| 314 | method = self._method_dict.get(method_name)
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| 315 | if method is None or not method.enabled:
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| 316 | return None
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| 317 | val_type = class_type.template_argument(0)
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| 318 | node_type = gdb.lookup_type(str(class_type) + '::_Node').pointer()
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| 319 | return method.worker_class(val_type, node_type)
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| 320 |
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| 321 | # Xmethods for std::list
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| 322 |
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| 323 | class ListWorkerBase(gdb.xmethod.XMethodWorker):
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| 324 | def __init__(self, val_type, node_type):
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| 325 | self._val_type = val_type
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| 326 | self._node_type = node_type
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| 327 |
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| 328 | def get_arg_types(self):
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| 329 | return None
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| 330 |
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| 331 | def get_value_from_node(self, node):
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| 332 | node = node.dereference()
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| 333 | if node.type.fields()[1].name == '_M_data':
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| 334 | # C++03 implementation, node contains the value as a member
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| 335 | return node['_M_data']
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| 336 | # C++11 implementation, node stores value in __aligned_membuf
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| 337 | addr = node['_M_storage'].address
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| 338 | return addr.cast(self._val_type.pointer()).dereference()
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| 339 |
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| 340 | class ListEmptyWorker(ListWorkerBase):
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| 341 | def get_result_type(self, obj):
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| 342 | return get_bool_type()
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| 343 |
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| 344 | def __call__(self, obj):
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| 345 | base_node = obj['_M_impl']['_M_node']
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| 346 | if base_node['_M_next'] == base_node.address:
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| 347 | return True
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| 348 | else:
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| 349 | return False
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| 350 |
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| 351 | class ListSizeWorker(ListWorkerBase):
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| 352 | def get_result_type(self, obj):
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| 353 | return get_std_size_type()
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| 354 |
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| 355 | def __call__(self, obj):
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| 356 | begin_node = obj['_M_impl']['_M_node']['_M_next']
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| 357 | end_node = obj['_M_impl']['_M_node'].address
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| 358 | size = 0
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| 359 | while begin_node != end_node:
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| 360 | begin_node = begin_node['_M_next']
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| 361 | size += 1
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| 362 | return size
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| 363 |
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| 364 | class ListFrontWorker(ListWorkerBase):
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| 365 | def get_result_type(self, obj):
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| 366 | return self._val_type
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| 367 |
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| 368 | def __call__(self, obj):
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| 369 | node = obj['_M_impl']['_M_node']['_M_next'].cast(self._node_type)
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| 370 | return self.get_value_from_node(node)
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| 371 |
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| 372 | class ListBackWorker(ListWorkerBase):
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| 373 | def get_result_type(self, obj):
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| 374 | return self._val_type
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| 375 |
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| 376 | def __call__(self, obj):
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| 377 | prev_node = obj['_M_impl']['_M_node']['_M_prev'].cast(self._node_type)
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| 378 | return self.get_value_from_node(prev_node)
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| 379 |
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| 380 | class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
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| 381 | def __init__(self):
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| 382 | gdb.xmethod.XMethodMatcher.__init__(self,
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| 383 | matcher_name_prefix + 'list')
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| 384 | self._method_dict = {
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| 385 | 'empty': LibStdCxxXMethod('empty', ListEmptyWorker),
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| 386 | 'size': LibStdCxxXMethod('size', ListSizeWorker),
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| 387 | 'front': LibStdCxxXMethod('front', ListFrontWorker),
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| 388 | 'back': LibStdCxxXMethod('back', ListBackWorker)
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| 389 | }
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| 390 | self.methods = [self._method_dict[m] for m in self._method_dict]
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| 391 |
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| 392 | def match(self, class_type, method_name):
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| 393 | if not re.match('^std::(__\d+::)?(__cxx11::)?list<.*>$', class_type.tag):
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| 394 | return None
|
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| 395 | method = self._method_dict.get(method_name)
|
|---|
| 396 | if method is None or not method.enabled:
|
|---|
| 397 | return None
|
|---|
| 398 | val_type = class_type.template_argument(0)
|
|---|
| 399 | node_type = gdb.lookup_type(str(class_type) + '::_Node').pointer()
|
|---|
| 400 | return method.worker_class(val_type, node_type)
|
|---|
| 401 |
|
|---|
| 402 | # Xmethods for std::vector
|
|---|
| 403 |
|
|---|
| 404 | class VectorWorkerBase(gdb.xmethod.XMethodWorker):
|
|---|
| 405 | def __init__(self, val_type):
|
|---|
| 406 | self._val_type = val_type
|
|---|
| 407 |
|
|---|
| 408 | def size(self, obj):
|
|---|
| 409 | if self._val_type.code == gdb.TYPE_CODE_BOOL:
|
|---|
| 410 | start = obj['_M_impl']['_M_start']['_M_p']
|
|---|
| 411 | finish = obj['_M_impl']['_M_finish']['_M_p']
|
|---|
| 412 | finish_offset = obj['_M_impl']['_M_finish']['_M_offset']
|
|---|
| 413 | bit_size = start.dereference().type.sizeof * 8
|
|---|
| 414 | return (finish - start) * bit_size + finish_offset
|
|---|
| 415 | else:
|
|---|
| 416 | return obj['_M_impl']['_M_finish'] - obj['_M_impl']['_M_start']
|
|---|
| 417 |
|
|---|
| 418 | def get(self, obj, index):
|
|---|
| 419 | if self._val_type.code == gdb.TYPE_CODE_BOOL:
|
|---|
| 420 | start = obj['_M_impl']['_M_start']['_M_p']
|
|---|
| 421 | bit_size = start.dereference().type.sizeof * 8
|
|---|
| 422 | valp = start + index // bit_size
|
|---|
| 423 | offset = index % bit_size
|
|---|
| 424 | return (valp.dereference() & (1 << offset)) > 0
|
|---|
| 425 | else:
|
|---|
| 426 | return obj['_M_impl']['_M_start'][index]
|
|---|
| 427 |
|
|---|
| 428 | class VectorEmptyWorker(VectorWorkerBase):
|
|---|
| 429 | def get_arg_types(self):
|
|---|
| 430 | return None
|
|---|
| 431 |
|
|---|
| 432 | def get_result_type(self, obj):
|
|---|
| 433 | return get_bool_type()
|
|---|
| 434 |
|
|---|
| 435 | def __call__(self, obj):
|
|---|
| 436 | return int(self.size(obj)) == 0
|
|---|
| 437 |
|
|---|
| 438 | class VectorSizeWorker(VectorWorkerBase):
|
|---|
| 439 | def get_arg_types(self):
|
|---|
| 440 | return None
|
|---|
| 441 |
|
|---|
| 442 | def get_result_type(self, obj):
|
|---|
| 443 | return get_std_size_type()
|
|---|
| 444 |
|
|---|
| 445 | def __call__(self, obj):
|
|---|
| 446 | return self.size(obj)
|
|---|
| 447 |
|
|---|
| 448 | class VectorFrontWorker(VectorWorkerBase):
|
|---|
| 449 | def get_arg_types(self):
|
|---|
| 450 | return None
|
|---|
| 451 |
|
|---|
| 452 | def get_result_type(self, obj):
|
|---|
| 453 | return self._val_type
|
|---|
| 454 |
|
|---|
| 455 | def __call__(self, obj):
|
|---|
| 456 | return self.get(obj, 0)
|
|---|
| 457 |
|
|---|
| 458 | class VectorBackWorker(VectorWorkerBase):
|
|---|
| 459 | def get_arg_types(self):
|
|---|
| 460 | return None
|
|---|
| 461 |
|
|---|
| 462 | def get_result_type(self, obj):
|
|---|
| 463 | return self._val_type
|
|---|
| 464 |
|
|---|
| 465 | def __call__(self, obj):
|
|---|
| 466 | return self.get(obj, int(self.size(obj)) - 1)
|
|---|
| 467 |
|
|---|
| 468 | class VectorAtWorker(VectorWorkerBase):
|
|---|
| 469 | def get_arg_types(self):
|
|---|
| 470 | return get_std_size_type()
|
|---|
| 471 |
|
|---|
| 472 | def get_result_type(self, obj, index):
|
|---|
| 473 | return self._val_type
|
|---|
| 474 |
|
|---|
| 475 | def __call__(self, obj, index):
|
|---|
| 476 | size = int(self.size(obj))
|
|---|
| 477 | if int(index) >= size:
|
|---|
| 478 | raise IndexError('Vector index "%d" should not be >= %d.' %
|
|---|
| 479 | ((int(index), size)))
|
|---|
| 480 | return self.get(obj, int(index))
|
|---|
| 481 |
|
|---|
| 482 | class VectorSubscriptWorker(VectorWorkerBase):
|
|---|
| 483 | def get_arg_types(self):
|
|---|
| 484 | return get_std_size_type()
|
|---|
| 485 |
|
|---|
| 486 | def get_result_type(self, obj, subscript):
|
|---|
| 487 | return self._val_type
|
|---|
| 488 |
|
|---|
| 489 | def __call__(self, obj, subscript):
|
|---|
| 490 | return self.get(obj, int(subscript))
|
|---|
| 491 |
|
|---|
| 492 | class VectorMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
|---|
| 493 | def __init__(self):
|
|---|
| 494 | gdb.xmethod.XMethodMatcher.__init__(self,
|
|---|
| 495 | matcher_name_prefix + 'vector')
|
|---|
| 496 | self._method_dict = {
|
|---|
| 497 | 'size': LibStdCxxXMethod('size', VectorSizeWorker),
|
|---|
| 498 | 'empty': LibStdCxxXMethod('empty', VectorEmptyWorker),
|
|---|
| 499 | 'front': LibStdCxxXMethod('front', VectorFrontWorker),
|
|---|
| 500 | 'back': LibStdCxxXMethod('back', VectorBackWorker),
|
|---|
| 501 | 'at': LibStdCxxXMethod('at', VectorAtWorker),
|
|---|
| 502 | 'operator[]': LibStdCxxXMethod('operator[]',
|
|---|
| 503 | VectorSubscriptWorker),
|
|---|
| 504 | }
|
|---|
| 505 | self.methods = [self._method_dict[m] for m in self._method_dict]
|
|---|
| 506 |
|
|---|
| 507 | def match(self, class_type, method_name):
|
|---|
| 508 | if not re.match('^std::(__\d+::)?vector<.*>$', class_type.tag):
|
|---|
| 509 | return None
|
|---|
| 510 | method = self._method_dict.get(method_name)
|
|---|
| 511 | if method is None or not method.enabled:
|
|---|
| 512 | return None
|
|---|
| 513 | return method.worker_class(class_type.template_argument(0))
|
|---|
| 514 |
|
|---|
| 515 | # Xmethods for associative containers
|
|---|
| 516 |
|
|---|
| 517 | class AssociativeContainerWorkerBase(gdb.xmethod.XMethodWorker):
|
|---|
| 518 | def __init__(self, unordered):
|
|---|
| 519 | self._unordered = unordered
|
|---|
| 520 |
|
|---|
| 521 | def node_count(self, obj):
|
|---|
| 522 | if self._unordered:
|
|---|
| 523 | return obj['_M_h']['_M_element_count']
|
|---|
| 524 | else:
|
|---|
| 525 | return obj['_M_t']['_M_impl']['_M_node_count']
|
|---|
| 526 |
|
|---|
| 527 | def get_arg_types(self):
|
|---|
| 528 | return None
|
|---|
| 529 |
|
|---|
| 530 | class AssociativeContainerEmptyWorker(AssociativeContainerWorkerBase):
|
|---|
| 531 | def get_result_type(self, obj):
|
|---|
| 532 | return get_bool_type()
|
|---|
| 533 |
|
|---|
| 534 | def __call__(self, obj):
|
|---|
| 535 | return int(self.node_count(obj)) == 0
|
|---|
| 536 |
|
|---|
| 537 | class AssociativeContainerSizeWorker(AssociativeContainerWorkerBase):
|
|---|
| 538 | def get_result_type(self, obj):
|
|---|
| 539 | return get_std_size_type()
|
|---|
| 540 |
|
|---|
| 541 | def __call__(self, obj):
|
|---|
| 542 | return self.node_count(obj)
|
|---|
| 543 |
|
|---|
| 544 | class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
|---|
| 545 | def __init__(self, name):
|
|---|
| 546 | gdb.xmethod.XMethodMatcher.__init__(self,
|
|---|
| 547 | matcher_name_prefix + name)
|
|---|
| 548 | self._name = name
|
|---|
| 549 | self._method_dict = {
|
|---|
| 550 | 'size': LibStdCxxXMethod('size', AssociativeContainerSizeWorker),
|
|---|
| 551 | 'empty': LibStdCxxXMethod('empty',
|
|---|
| 552 | AssociativeContainerEmptyWorker),
|
|---|
| 553 | }
|
|---|
| 554 | self.methods = [self._method_dict[m] for m in self._method_dict]
|
|---|
| 555 |
|
|---|
| 556 | def match(self, class_type, method_name):
|
|---|
| 557 | if not re.match('^std::(__\d+::)?%s<.*>$' % self._name, class_type.tag):
|
|---|
| 558 | return None
|
|---|
| 559 | method = self._method_dict.get(method_name)
|
|---|
| 560 | if method is None or not method.enabled:
|
|---|
| 561 | return None
|
|---|
| 562 | unordered = 'unordered' in self._name
|
|---|
| 563 | return method.worker_class(unordered)
|
|---|
| 564 |
|
|---|
| 565 | # Xmethods for std::unique_ptr
|
|---|
| 566 |
|
|---|
| 567 | class UniquePtrGetWorker(gdb.xmethod.XMethodWorker):
|
|---|
| 568 | "Implements std::unique_ptr<T>::get() and std::unique_ptr<T>::operator->()"
|
|---|
| 569 |
|
|---|
| 570 | def __init__(self, elem_type):
|
|---|
| 571 | self._is_array = elem_type.code == gdb.TYPE_CODE_ARRAY
|
|---|
| 572 | if self._is_array:
|
|---|
| 573 | self._elem_type = elem_type.target()
|
|---|
| 574 | else:
|
|---|
| 575 | self._elem_type = elem_type
|
|---|
| 576 |
|
|---|
| 577 | def get_arg_types(self):
|
|---|
| 578 | return None
|
|---|
| 579 |
|
|---|
| 580 | def get_result_type(self, obj):
|
|---|
| 581 | return self._elem_type.pointer()
|
|---|
| 582 |
|
|---|
| 583 | def _supports(self, method_name):
|
|---|
| 584 | "operator-> is not supported for unique_ptr<T[]>"
|
|---|
| 585 | return method_name == 'get' or not self._is_array
|
|---|
| 586 |
|
|---|
| 587 | def __call__(self, obj):
|
|---|
| 588 | impl_type = obj.dereference().type.fields()[0].type.tag
|
|---|
| 589 | # Check for new implementations first:
|
|---|
| 590 | if re.match('^std::(__\d+::)?__uniq_ptr_(data|impl)<.*>$', impl_type):
|
|---|
| 591 | tuple_member = obj['_M_t']['_M_t']
|
|---|
| 592 | elif re.match('^std::(__\d+::)?tuple<.*>$', impl_type):
|
|---|
| 593 | tuple_member = obj['_M_t']
|
|---|
| 594 | else:
|
|---|
| 595 | return None
|
|---|
| 596 | tuple_impl_type = tuple_member.type.fields()[0].type # _Tuple_impl
|
|---|
| 597 | tuple_head_type = tuple_impl_type.fields()[1].type # _Head_base
|
|---|
| 598 | head_field = tuple_head_type.fields()[0]
|
|---|
| 599 | if head_field.name == '_M_head_impl':
|
|---|
| 600 | return tuple_member['_M_head_impl']
|
|---|
| 601 | elif head_field.is_base_class:
|
|---|
| 602 | return tuple_member.cast(head_field.type)
|
|---|
| 603 | else:
|
|---|
| 604 | return None
|
|---|
| 605 |
|
|---|
| 606 | class UniquePtrDerefWorker(UniquePtrGetWorker):
|
|---|
| 607 | "Implements std::unique_ptr<T>::operator*()"
|
|---|
| 608 |
|
|---|
| 609 | def __init__(self, elem_type):
|
|---|
| 610 | UniquePtrGetWorker.__init__(self, elem_type)
|
|---|
| 611 |
|
|---|
| 612 | def get_result_type(self, obj):
|
|---|
| 613 | return self._elem_type
|
|---|
| 614 |
|
|---|
| 615 | def _supports(self, method_name):
|
|---|
| 616 | "operator* is not supported for unique_ptr<T[]>"
|
|---|
| 617 | return not self._is_array
|
|---|
| 618 |
|
|---|
| 619 | def __call__(self, obj):
|
|---|
| 620 | return UniquePtrGetWorker.__call__(self, obj).dereference()
|
|---|
| 621 |
|
|---|
| 622 | class UniquePtrSubscriptWorker(UniquePtrGetWorker):
|
|---|
| 623 | "Implements std::unique_ptr<T>::operator[](size_t)"
|
|---|
| 624 |
|
|---|
| 625 | def __init__(self, elem_type):
|
|---|
| 626 | UniquePtrGetWorker.__init__(self, elem_type)
|
|---|
| 627 |
|
|---|
| 628 | def get_arg_types(self):
|
|---|
| 629 | return get_std_size_type()
|
|---|
| 630 |
|
|---|
| 631 | def get_result_type(self, obj, index):
|
|---|
| 632 | return self._elem_type
|
|---|
| 633 |
|
|---|
| 634 | def _supports(self, method_name):
|
|---|
| 635 | "operator[] is only supported for unique_ptr<T[]>"
|
|---|
| 636 | return self._is_array
|
|---|
| 637 |
|
|---|
| 638 | def __call__(self, obj, index):
|
|---|
| 639 | return UniquePtrGetWorker.__call__(self, obj)[index]
|
|---|
| 640 |
|
|---|
| 641 | class UniquePtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
|---|
| 642 | def __init__(self):
|
|---|
| 643 | gdb.xmethod.XMethodMatcher.__init__(self,
|
|---|
| 644 | matcher_name_prefix + 'unique_ptr')
|
|---|
| 645 | self._method_dict = {
|
|---|
| 646 | 'get': LibStdCxxXMethod('get', UniquePtrGetWorker),
|
|---|
| 647 | 'operator->': LibStdCxxXMethod('operator->', UniquePtrGetWorker),
|
|---|
| 648 | 'operator*': LibStdCxxXMethod('operator*', UniquePtrDerefWorker),
|
|---|
| 649 | 'operator[]': LibStdCxxXMethod('operator[]', UniquePtrSubscriptWorker),
|
|---|
| 650 | }
|
|---|
| 651 | self.methods = [self._method_dict[m] for m in self._method_dict]
|
|---|
| 652 |
|
|---|
| 653 | def match(self, class_type, method_name):
|
|---|
| 654 | if not re.match('^std::(__\d+::)?unique_ptr<.*>$', class_type.tag):
|
|---|
| 655 | return None
|
|---|
| 656 | method = self._method_dict.get(method_name)
|
|---|
| 657 | if method is None or not method.enabled:
|
|---|
| 658 | return None
|
|---|
| 659 | worker = method.worker_class(class_type.template_argument(0))
|
|---|
| 660 | if worker._supports(method_name):
|
|---|
| 661 | return worker
|
|---|
| 662 | return None
|
|---|
| 663 |
|
|---|
| 664 | # Xmethods for std::shared_ptr
|
|---|
| 665 |
|
|---|
| 666 | class SharedPtrGetWorker(gdb.xmethod.XMethodWorker):
|
|---|
| 667 | "Implements std::shared_ptr<T>::get() and std::shared_ptr<T>::operator->()"
|
|---|
| 668 |
|
|---|
| 669 | def __init__(self, elem_type):
|
|---|
| 670 | self._is_array = elem_type.code == gdb.TYPE_CODE_ARRAY
|
|---|
| 671 | if self._is_array:
|
|---|
| 672 | self._elem_type = elem_type.target()
|
|---|
| 673 | else:
|
|---|
| 674 | self._elem_type = elem_type
|
|---|
| 675 |
|
|---|
| 676 | def get_arg_types(self):
|
|---|
| 677 | return None
|
|---|
| 678 |
|
|---|
| 679 | def get_result_type(self, obj):
|
|---|
| 680 | return self._elem_type.pointer()
|
|---|
| 681 |
|
|---|
| 682 | def _supports(self, method_name):
|
|---|
| 683 | "operator-> is not supported for shared_ptr<T[]>"
|
|---|
| 684 | return method_name == 'get' or not self._is_array
|
|---|
| 685 |
|
|---|
| 686 | def __call__(self, obj):
|
|---|
| 687 | return obj['_M_ptr']
|
|---|
| 688 |
|
|---|
| 689 | class SharedPtrDerefWorker(SharedPtrGetWorker):
|
|---|
| 690 | "Implements std::shared_ptr<T>::operator*()"
|
|---|
| 691 |
|
|---|
| 692 | def __init__(self, elem_type):
|
|---|
| 693 | SharedPtrGetWorker.__init__(self, elem_type)
|
|---|
| 694 |
|
|---|
| 695 | def get_result_type(self, obj):
|
|---|
| 696 | return self._elem_type
|
|---|
| 697 |
|
|---|
| 698 | def _supports(self, method_name):
|
|---|
| 699 | "operator* is not supported for shared_ptr<T[]>"
|
|---|
| 700 | return not self._is_array
|
|---|
| 701 |
|
|---|
| 702 | def __call__(self, obj):
|
|---|
| 703 | return SharedPtrGetWorker.__call__(self, obj).dereference()
|
|---|
| 704 |
|
|---|
| 705 | class SharedPtrSubscriptWorker(SharedPtrGetWorker):
|
|---|
| 706 | "Implements std::shared_ptr<T>::operator[](size_t)"
|
|---|
| 707 |
|
|---|
| 708 | def __init__(self, elem_type):
|
|---|
| 709 | SharedPtrGetWorker.__init__(self, elem_type)
|
|---|
| 710 |
|
|---|
| 711 | def get_arg_types(self):
|
|---|
| 712 | return get_std_size_type()
|
|---|
| 713 |
|
|---|
| 714 | def get_result_type(self, obj, index):
|
|---|
| 715 | return self._elem_type
|
|---|
| 716 |
|
|---|
| 717 | def _supports(self, method_name):
|
|---|
| 718 | "operator[] is only supported for shared_ptr<T[]>"
|
|---|
| 719 | return self._is_array
|
|---|
| 720 |
|
|---|
| 721 | def __call__(self, obj, index):
|
|---|
| 722 | # Check bounds if _elem_type is an array of known bound
|
|---|
| 723 | m = re.match('.*\[(\d+)]$', str(self._elem_type))
|
|---|
| 724 | if m and index >= int(m.group(1)):
|
|---|
| 725 | raise IndexError('shared_ptr<%s> index "%d" should not be >= %d.' %
|
|---|
| 726 | (self._elem_type, int(index), int(m.group(1))))
|
|---|
| 727 | return SharedPtrGetWorker.__call__(self, obj)[index]
|
|---|
| 728 |
|
|---|
| 729 | class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
|
|---|
| 730 | "Implements std::shared_ptr<T>::use_count()"
|
|---|
| 731 |
|
|---|
| 732 | def __init__(self, elem_type):
|
|---|
| 733 | SharedPtrUseCountWorker.__init__(self, elem_type)
|
|---|
| 734 |
|
|---|
| 735 | def get_arg_types(self):
|
|---|
| 736 | return None
|
|---|
| 737 |
|
|---|
| 738 | def get_result_type(self, obj):
|
|---|
| 739 | return gdb.lookup_type('long')
|
|---|
| 740 |
|
|---|
| 741 | def __call__(self, obj):
|
|---|
| 742 | refcounts = obj['_M_refcount']['_M_pi']
|
|---|
| 743 | return refcounts['_M_use_count'] if refcounts else 0
|
|---|
| 744 |
|
|---|
| 745 | class SharedPtrUniqueWorker(SharedPtrUseCountWorker):
|
|---|
| 746 | "Implements std::shared_ptr<T>::unique()"
|
|---|
| 747 |
|
|---|
| 748 | def __init__(self, elem_type):
|
|---|
| 749 | SharedPtrUseCountWorker.__init__(self, elem_type)
|
|---|
| 750 |
|
|---|
| 751 | def get_result_type(self, obj):
|
|---|
| 752 | return gdb.lookup_type('bool')
|
|---|
| 753 |
|
|---|
| 754 | def __call__(self, obj):
|
|---|
| 755 | return SharedPtrUseCountWorker.__call__(self, obj) == 1
|
|---|
| 756 |
|
|---|
| 757 | class SharedPtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
|
|---|
| 758 | def __init__(self):
|
|---|
| 759 | gdb.xmethod.XMethodMatcher.__init__(self,
|
|---|
| 760 | matcher_name_prefix + 'shared_ptr')
|
|---|
| 761 | self._method_dict = {
|
|---|
| 762 | 'get': LibStdCxxXMethod('get', SharedPtrGetWorker),
|
|---|
| 763 | 'operator->': LibStdCxxXMethod('operator->', SharedPtrGetWorker),
|
|---|
| 764 | 'operator*': LibStdCxxXMethod('operator*', SharedPtrDerefWorker),
|
|---|
| 765 | 'operator[]': LibStdCxxXMethod('operator[]', SharedPtrSubscriptWorker),
|
|---|
| 766 | 'use_count': LibStdCxxXMethod('use_count', SharedPtrUseCountWorker),
|
|---|
| 767 | 'unique': LibStdCxxXMethod('unique', SharedPtrUniqueWorker),
|
|---|
| 768 | }
|
|---|
| 769 | self.methods = [self._method_dict[m] for m in self._method_dict]
|
|---|
| 770 |
|
|---|
| 771 | def match(self, class_type, method_name):
|
|---|
| 772 | if not re.match('^std::(__\d+::)?shared_ptr<.*>$', class_type.tag):
|
|---|
| 773 | return None
|
|---|
| 774 | method = self._method_dict.get(method_name)
|
|---|
| 775 | if method is None or not method.enabled:
|
|---|
| 776 | return None
|
|---|
| 777 | worker = method.worker_class(class_type.template_argument(0))
|
|---|
| 778 | if worker._supports(method_name):
|
|---|
| 779 | return worker
|
|---|
| 780 | return None
|
|---|
| 781 | |
|---|
| 782 |
|
|---|
| 783 | def register_libstdcxx_xmethods(locus):
|
|---|
| 784 | gdb.xmethod.register_xmethod_matcher(locus, ArrayMethodsMatcher())
|
|---|
| 785 | gdb.xmethod.register_xmethod_matcher(locus, ForwardListMethodsMatcher())
|
|---|
| 786 | gdb.xmethod.register_xmethod_matcher(locus, DequeMethodsMatcher())
|
|---|
| 787 | gdb.xmethod.register_xmethod_matcher(locus, ListMethodsMatcher())
|
|---|
| 788 | gdb.xmethod.register_xmethod_matcher(locus, VectorMethodsMatcher())
|
|---|
| 789 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 790 | locus, AssociativeContainerMethodsMatcher('set'))
|
|---|
| 791 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 792 | locus, AssociativeContainerMethodsMatcher('map'))
|
|---|
| 793 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 794 | locus, AssociativeContainerMethodsMatcher('multiset'))
|
|---|
| 795 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 796 | locus, AssociativeContainerMethodsMatcher('multimap'))
|
|---|
| 797 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 798 | locus, AssociativeContainerMethodsMatcher('unordered_set'))
|
|---|
| 799 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 800 | locus, AssociativeContainerMethodsMatcher('unordered_map'))
|
|---|
| 801 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 802 | locus, AssociativeContainerMethodsMatcher('unordered_multiset'))
|
|---|
| 803 | gdb.xmethod.register_xmethod_matcher(
|
|---|
| 804 | locus, AssociativeContainerMethodsMatcher('unordered_multimap'))
|
|---|
| 805 | gdb.xmethod.register_xmethod_matcher(locus, UniquePtrMethodsMatcher())
|
|---|
| 806 | gdb.xmethod.register_xmethod_matcher(locus, SharedPtrMethodsMatcher())
|
|---|
