c07138f6a0
Old-style syntax: `except Exception, e:` New-style syntax: `except Exception as e:` These two statements are identical, except that the former has been deprecated for may versions, and was removed in Python 3. This converts everything to use the new syntax (which also works in Python 2). I had to convert unittest2 as well. What we really need to do is just delete unittest2, and use unittest instead since it is a standard module that ships with every Python distribution. But this is the path of least resistance for now, although at some point we will really need to do it. llvm-svn: 251968
111 lines
3.8 KiB
Python
111 lines
3.8 KiB
Python
import lldb
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_map_capping_size = 255
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class libcxx_hash_table_SynthProvider:
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def __init__(self, valobj, dict):
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self.valobj = valobj
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self.num_elements = None
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self.next_element = None
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self.bucket_count = None
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def update(self):
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logger = lldb.formatters.Logger.Logger()
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self.num_elements = None
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self.next_element = None
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self.bucket_count = None
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try:
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# unordered_map is made up of a hash_map, which has 4 pieces in it:
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# bucket list :
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# array of buckets
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# p1 (pair):
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# first - pointer to first loaded element
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# p2 (pair):
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# first - number of elements
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# second - hash function
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# p3 (pair):
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# first - max_load_factor
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# second - equality operator function
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#
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# For display, we actually don't need to go inside the buckets, since 'p1' has a way to iterate over all
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# the elements directly.
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#
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# We will calculate other values about the map because they will be useful for the summary.
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#
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table = self.valobj.GetChildMemberWithName('__table_')
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bl_ptr = table.GetChildMemberWithName('__bucket_list_').GetChildMemberWithName('__ptr_')
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self.bucket_array_ptr = bl_ptr.GetChildMemberWithName('__first_').GetValueAsUnsigned(0)
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self.bucket_count = bl_ptr.GetChildMemberWithName('__second_').GetChildMemberWithName('__data_').GetChildMemberWithName('__first_').GetValueAsUnsigned(0)
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logger >> "Bucket count = %r" % self.bucket_count
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self.begin_ptr = table.GetChildMemberWithName('__p1_').GetChildMemberWithName('__first_').GetChildMemberWithName('__next_')
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self.num_elements = table.GetChildMemberWithName('__p2_').GetChildMemberWithName('__first_').GetValueAsUnsigned(0)
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self.max_load_factor = table.GetChildMemberWithName('__p3_').GetChildMemberWithName('__first_').GetValueAsUnsigned(0)
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logger >> "Num elements = %r" % self.num_elements
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# save the pointers as we get them
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# -- don't access this first element if num_element==0!
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self.elements_cache = []
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if self.num_elements:
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self.next_element = self.begin_ptr
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else:
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self.next_element = None
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except Exception as e:
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logger >> "Caught exception: %r" % e
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pass
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def num_children(self):
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global _map_capping_size
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num_elements = self.num_elements
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if num_elements is not None:
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if num_elements > _map_capping_size:
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num_elements = _map_capping_size
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return num_elements
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def has_children(self):
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return True
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def get_child_index(self,name):
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logger = lldb.formatters.Logger.Logger()
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try:
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return int(name.lstrip('[').rstrip(']'))
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except:
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return -1
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def get_child_at_index(self,index):
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logger = lldb.formatters.Logger.Logger()
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logger >> "Retrieving child " + str(index)
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if index < 0:
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return None
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if index >= self.num_children():
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return None
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# extend
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logger >> " : cache size starts with %d elements" % len(self.elements_cache)
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while index >= len(self.elements_cache):
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# if we hit the end before we get the index, give up:
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if not self.next_element:
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logger >> " : hit end of list"
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return None
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node = self.next_element.Dereference()
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value = node.GetChildMemberWithName('__value_')
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hash_value = node.GetChildMemberWithName('__hash_').GetValueAsUnsigned()
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self.elements_cache.append((value, hash_value))
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self.next_element = node.GetChildMemberWithName('__next_')
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if not self.next_element.GetValueAsUnsigned(0):
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self.next_element = None
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# hit the index! so we have the value
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logger >> " : cache size ends with %d elements" % len(self.elements_cache)
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value, hash_value = self.elements_cache[index]
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return self.valobj.CreateValueFromData('[%d] <hash %d>'%(index,hash_value), value.GetData(), value.GetType())
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def __lldb_init_module(debugger,dict):
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debugger.HandleCommand('type synthetic add -l unordered_multi.libcxx_hash_table_SynthProvider -x "^(std::__1::)unordered_(multi)?(map|set)<.+> >$" -w libcxx')
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