def Diff(before, after, sort=False):
"""Diffs two SizeInfo objects. Returns a DeltaSizeInfo."""
assert isinstance(before, models.SizeInfo)
assert isinstance(after, models.SizeInfo)
section_sizes = {
k: after.section_sizes.get(k, 0) - v
for k, v in before.section_sizes.items()
}
for k, v in after.section_sizes.items():
if k not in section_sizes:
section_sizes[k] = v
symbol_diff = _DiffSymbolGroups(before.raw_symbols, after.raw_symbols)
ret = models.DeltaSizeInfo(before, after, section_sizes, symbol_diff)
if sort:
syms = ret.symbols # Triggers clustering.
logging.debug('Grouping')
# Group path aliases so that functions defined in headers will be sorted
# by their actual size rather than shown as many small symbols.
# Grouping these is nice since adding or remove just one path alias changes
# the PSS of all symbols (a lot of noise).
syms = syms.GroupedByAliases(same_name_only=True)
logging.debug('Sorting')
ret.symbols = syms.Sorted()
logging.debug('Diff complete')
return ret
def Diff(before, after):
"""Diffs two SizeInfo objects. Returns a DeltaSizeInfo."""
assert isinstance(before, models.SizeInfo)
assert isinstance(after, models.SizeInfo)
section_sizes = {
k: after.section_sizes.get(k, 0) - v
for k, v in before.section_sizes.iteritems()
}
for k, v in after.section_sizes.iteritems():
if k not in section_sizes:
section_sizes[k] = v
symbol_diff = _DiffSymbolGroups(before.raw_symbols, after.raw_symbols)
return models.DeltaSizeInfo(before, after, section_sizes, symbol_diff)