1 # Copyright 2014 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
5 """This unittest covers both file_storage and serialization modules."""
12 from memory_inspector.core import memory_map
13 from memory_inspector.core import native_heap
14 from memory_inspector.core import stacktrace
15 from memory_inspector.core import symbol
16 from memory_inspector.data import file_storage
19 class FileStorageTest(unittest.TestCase):
21 self._storage_path = tempfile.mkdtemp()
22 self._storage = file_storage.Storage(self._storage_path)
25 os.removedirs(self._storage_path)
27 def testSettings(self):
28 settings_1 = { 'foo' : 1, 'bar' : 2 }
29 settings_2 = { 'foo' : 1, 'bar' : 2 }
30 self._storage.StoreSettings('one', settings_1)
31 self._storage.StoreSettings('two', settings_2)
32 self._DeepCompare(settings_1, self._storage.LoadSettings('one'))
33 self._DeepCompare(settings_2, self._storage.LoadSettings('two'))
34 self._storage.StoreSettings('one', {})
35 self._storage.StoreSettings('two', {})
37 def testArchives(self):
38 self._storage.OpenArchive('foo', create=True)
39 self._storage.OpenArchive('bar', create=True)
40 self._storage.OpenArchive('baz', create=True)
41 self._storage.DeleteArchive('bar')
42 self.assertTrue('foo' in self._storage.ListArchives())
43 self.assertFalse('bar' in self._storage.ListArchives())
44 self.assertTrue('baz' in self._storage.ListArchives())
45 self._storage.DeleteArchive('foo')
46 self._storage.DeleteArchive('baz')
48 def testSnapshots(self):
49 archive = self._storage.OpenArchive('snapshots', create=True)
50 t1 = archive.StartNewSnapshot()
51 archive.StoreMemMaps(memory_map.Map())
52 time.sleep(0.01) # Max snapshot resolution is in the order of usecs.
53 t2 = archive.StartNewSnapshot()
54 archive.StoreMemMaps(memory_map.Map())
55 archive.StoreNativeHeap(native_heap.NativeHeap())
56 self.assertIn(t1, archive.ListSnapshots())
57 self.assertIn(t2, archive.ListSnapshots())
58 self.assertTrue(archive.HasMemMaps(t1))
59 self.assertFalse(archive.HasNativeHeap(t1))
60 self.assertTrue(archive.HasMemMaps(t2))
61 self.assertTrue(archive.HasNativeHeap(t2))
62 self._storage.DeleteArchive('snapshots')
65 archive = self._storage.OpenArchive('mmap', create=True)
66 timestamp = archive.StartNewSnapshot()
67 mmap = memory_map.Map()
68 map_entry1 = memory_map.MapEntry(4096, 8191, 'rw--', '/foo', 0)
69 map_entry2 = memory_map.MapEntry(65536, 81919, 'rw--', '/bar', 4096)
70 map_entry2.resident_pages = [5]
73 archive.StoreMemMaps(mmap)
74 mmap_deser = archive.LoadMemMaps(timestamp)
75 self._DeepCompare(mmap, mmap_deser)
76 self._storage.DeleteArchive('mmap')
78 def testNativeHeap(self):
79 archive = self._storage.OpenArchive('nheap', create=True)
80 timestamp = archive.StartNewSnapshot()
81 nh = native_heap.NativeHeap()
82 for i in xrange(1, 4):
83 stack_trace = stacktrace.Stacktrace()
84 frame = nh.GetStackFrame(i * 10 + 1)
85 frame.SetExecFileInfo('foo.so', 1)
86 stack_trace.Add(frame)
87 frame = nh.GetStackFrame(i * 10 + 2)
88 frame.SetExecFileInfo('bar.so', 2)
89 stack_trace.Add(frame)
90 nh.Add(native_heap.Allocation(size=i * 10,
91 stack_trace=stack_trace,
94 archive.StoreNativeHeap(nh)
95 nh_deser = archive.LoadNativeHeap(timestamp)
96 self._DeepCompare(nh, nh_deser)
97 self._storage.DeleteArchive('nheap')
99 def testSymbols(self):
100 archive = self._storage.OpenArchive('symbols', create=True)
101 symbols = symbol.Symbols()
102 # Symbol db is global per archive, no need to StartNewSnapshot.
103 symbols.Add('foo.so', 1, symbol.Symbol('sym1', 'file1.c', 11))
104 symbols.Add('bar.so', 2, symbol.Symbol('sym2', 'file2.c', 12))
105 sym3 = symbol.Symbol('sym3', 'file2.c', 13)
106 sym3.AddSourceLineInfo('outer_file.c', 23)
107 symbols.Add('baz.so', 3, sym3)
108 archive.StoreSymbols(symbols)
109 symbols_deser = archive.LoadSymbols()
110 self._DeepCompare(symbols, symbols_deser)
111 self._storage.DeleteArchive('symbols')
113 def _DeepCompare(self, a, b, prefix=''):
114 """Recursively compares two objects (original and deserialized)."""
116 self.assertEqual(a is None, b is None)
120 _BASICTYPES = (long, int, basestring, float)
121 if isinstance(a, _BASICTYPES) and isinstance(b, _BASICTYPES):
122 return self.assertEqual(a, b, prefix)
124 self.assertEqual(type(a), type(b), prefix + ' type (%s vs %s' % (
127 if isinstance(a, list):
128 self.assertEqual(len(a), len(b), prefix + ' len (%d vs %d)' % (
130 for i in range(len(a)):
131 self._DeepCompare(a[i], b[i], prefix + '[%d]' % i)
134 if isinstance(a, dict):
135 self.assertEqual(a.keys(), b.keys(), prefix + ' keys (%s vs %s)' % (
136 str(a.keys()), str(b.keys())))
137 for k in a.iterkeys():
138 self._DeepCompare(a[k], b[k], prefix + '.' + str(k))
141 return self._DeepCompare(a.__dict__, b.__dict__, prefix)