1# Copyright (c) 2012 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. 4 5# pylint: disable=R0201 6 7from __future__ import print_function 8 9import logging 10import sys 11 12from devil.android import device_errors 13from devil.android.valgrind_tools import base_tool 14 15 16def SetChromeTimeoutScale(device, scale): 17 """Sets the timeout scale in /data/local/tmp/chrome_timeout_scale to scale.""" 18 path = '/data/local/tmp/chrome_timeout_scale' 19 if not scale or scale == 1.0: 20 # Delete if scale is None/0.0/1.0 since the default timeout scale is 1.0 21 device.RemovePath(path, force=True, as_root=True) 22 else: 23 device.WriteFile(path, '%f' % scale, as_root=True) 24 25 26 27class AddressSanitizerTool(base_tool.BaseTool): 28 """AddressSanitizer tool.""" 29 30 WRAPPER_NAME = '/system/bin/asanwrapper' 31 # Disable memcmp overlap check.There are blobs (gl drivers) 32 # on some android devices that use memcmp on overlapping regions, 33 # nothing we can do about that. 34 EXTRA_OPTIONS = 'strict_memcmp=0,use_sigaltstack=1' 35 36 def __init__(self, device): 37 super(AddressSanitizerTool, self).__init__() 38 self._device = device 39 40 @classmethod 41 def CopyFiles(cls, device): 42 """Copies ASan tools to the device.""" 43 del device 44 45 def GetTestWrapper(self): 46 return AddressSanitizerTool.WRAPPER_NAME 47 48 def GetUtilWrapper(self): 49 """Returns the wrapper for utilities, such as forwarder. 50 51 AddressSanitizer wrapper must be added to all instrumented binaries, 52 including forwarder and the like. This can be removed if such binaries 53 were built without instrumentation. """ 54 return self.GetTestWrapper() 55 56 def SetupEnvironment(self): 57 try: 58 self._device.EnableRoot() 59 except device_errors.CommandFailedError as e: 60 # Try to set the timeout scale anyway. 61 # TODO(jbudorick) Handle this exception appropriately after interface 62 # conversions are finished. 63 logging.error(str(e)) 64 SetChromeTimeoutScale(self._device, self.GetTimeoutScale()) 65 66 def CleanUpEnvironment(self): 67 SetChromeTimeoutScale(self._device, None) 68 69 def GetTimeoutScale(self): 70 # Very slow startup. 71 return 20.0 72 73 74TOOL_REGISTRY = { 75 'asan': AddressSanitizerTool, 76} 77 78 79def CreateTool(tool_name, device): 80 """Creates a tool with the specified tool name. 81 82 Args: 83 tool_name: Name of the tool to create. 84 device: A DeviceUtils instance. 85 Returns: 86 A tool for the specified tool_name. 87 """ 88 if not tool_name: 89 return base_tool.BaseTool() 90 91 ctor = TOOL_REGISTRY.get(tool_name) 92 if ctor: 93 return ctor(device) 94 else: 95 print('Unknown tool %s, available tools: %s' % (tool_name, ', '.join( 96 sorted(TOOL_REGISTRY.keys())))) 97 sys.exit(1) 98 99def PushFilesForTool(tool_name, device): 100 """Pushes the files required for |tool_name| to |device|. 101 102 Args: 103 tool_name: Name of the tool to create. 104 device: A DeviceUtils instance. 105 """ 106 if not tool_name: 107 return 108 109 clazz = TOOL_REGISTRY.get(tool_name) 110 if clazz: 111 clazz.CopyFiles(device) 112 else: 113 print('Unknown tool %s, available tools: %s' % (tool_name, ', '.join( 114 sorted(TOOL_REGISTRY.keys())))) 115 sys.exit(1) 116