forked from OSchip/llvm-project
404 lines
16 KiB
Python
Executable File
404 lines
16 KiB
Python
Executable File
#!/usr/bin/env python
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#----------------------------------------------------------------------
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# Be sure to add the python path that points to the LLDB shared library.
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# On MacOSX csh, tcsh:
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# setenv PYTHONPATH /Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Resources/Python
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# On MacOSX sh, bash:
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# export PYTHONPATH=/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Resources/Python
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#----------------------------------------------------------------------
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from __future__ import print_function
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import optparse
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import os
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import platform
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import re
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import resource
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import sys
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import subprocess
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import time
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import types
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#----------------------------------------------------------------------
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# Code that auto imports LLDB
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#----------------------------------------------------------------------
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try:
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# Just try for LLDB in case PYTHONPATH is already correctly setup
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import lldb
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except ImportError:
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lldb_python_dirs = list()
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# lldb is not in the PYTHONPATH, try some defaults for the current platform
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platform_system = platform.system()
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if platform_system == 'Darwin':
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# On Darwin, try the currently selected Xcode directory
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xcode_dir = subprocess.check_output("xcode-select --print-path", shell=True)
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if xcode_dir:
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lldb_python_dirs.append(
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os.path.realpath(
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xcode_dir +
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'/../SharedFrameworks/LLDB.framework/Resources/Python'))
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lldb_python_dirs.append(
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xcode_dir + '/Library/PrivateFrameworks/LLDB.framework/Resources/Python')
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lldb_python_dirs.append(
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'/System/Library/PrivateFrameworks/LLDB.framework/Resources/Python')
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success = False
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for lldb_python_dir in lldb_python_dirs:
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if os.path.exists(lldb_python_dir):
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if not (sys.path.__contains__(lldb_python_dir)):
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sys.path.append(lldb_python_dir)
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try:
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import lldb
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except ImportError:
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pass
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else:
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print('imported lldb from: "%s"' % (lldb_python_dir))
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success = True
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break
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if not success:
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print("error: couldn't locate the 'lldb' module, please set PYTHONPATH correctly")
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sys.exit(1)
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class Timer:
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def __enter__(self):
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self.start = time.clock()
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return self
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def __exit__(self, *args):
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self.end = time.clock()
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self.interval = self.end - self.start
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class Action(object):
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"""Class that encapsulates actions to take when a thread stops for a reason."""
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def __init__(self, callback=None, callback_owner=None):
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self.callback = callback
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self.callback_owner = callback_owner
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def ThreadStopped(self, thread):
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assert False, "performance.Action.ThreadStopped(self, thread) must be overridden in a subclass"
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class PlanCompleteAction (Action):
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def __init__(self, callback=None, callback_owner=None):
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Action.__init__(self, callback, callback_owner)
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def ThreadStopped(self, thread):
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if thread.GetStopReason() == lldb.eStopReasonPlanComplete:
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if self.callback:
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if self.callback_owner:
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self.callback(self.callback_owner, thread)
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else:
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self.callback(thread)
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return True
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return False
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class BreakpointAction (Action):
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def __init__(
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self,
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callback=None,
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callback_owner=None,
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name=None,
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module=None,
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file=None,
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line=None,
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breakpoint=None):
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Action.__init__(self, callback, callback_owner)
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self.modules = lldb.SBFileSpecList()
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self.files = lldb.SBFileSpecList()
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self.breakpoints = list()
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# "module" can be a list or a string
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if breakpoint:
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self.breakpoints.append(breakpoint)
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else:
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if module:
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if isinstance(module, types.ListType):
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for module_path in module:
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self.modules.Append(
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lldb.SBFileSpec(module_path, False))
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elif isinstance(module, types.StringTypes):
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self.modules.Append(lldb.SBFileSpec(module, False))
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if name:
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# "file" can be a list or a string
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if file:
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if isinstance(file, types.ListType):
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self.files = lldb.SBFileSpecList()
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for f in file:
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self.files.Append(lldb.SBFileSpec(f, False))
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elif isinstance(file, types.StringTypes):
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self.files.Append(lldb.SBFileSpec(file, False))
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self.breakpoints.append(
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self.target.BreakpointCreateByName(
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name, self.modules, self.files))
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elif file and line:
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self.breakpoints.append(
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self.target.BreakpointCreateByLocation(
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file, line))
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def ThreadStopped(self, thread):
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if thread.GetStopReason() == lldb.eStopReasonBreakpoint:
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for bp in self.breakpoints:
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if bp.GetID() == thread.GetStopReasonDataAtIndex(0):
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if self.callback:
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if self.callback_owner:
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self.callback(self.callback_owner, thread)
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else:
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self.callback(thread)
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return True
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return False
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class TestCase:
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"""Class that aids in running performance tests."""
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def __init__(self):
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self.verbose = False
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self.debugger = lldb.SBDebugger.Create()
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self.target = None
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self.process = None
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self.thread = None
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self.launch_info = None
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self.done = False
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self.listener = self.debugger.GetListener()
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self.user_actions = list()
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self.builtin_actions = list()
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self.bp_id_to_dict = dict()
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def Setup(self, args):
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self.launch_info = lldb.SBLaunchInfo(args)
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def Run(self, args):
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assert False, "performance.TestCase.Run(self, args) must be subclassed"
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def Launch(self):
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if self.target:
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error = lldb.SBError()
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self.process = self.target.Launch(self.launch_info, error)
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if not error.Success():
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print("error: %s" % error.GetCString())
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if self.process:
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self.process.GetBroadcaster().AddListener(self.listener,
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lldb.SBProcess.eBroadcastBitStateChanged | lldb.SBProcess.eBroadcastBitInterrupt)
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return True
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return False
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def WaitForNextProcessEvent(self):
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event = None
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if self.process:
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while event is None:
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process_event = lldb.SBEvent()
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if self.listener.WaitForEvent(lldb.UINT32_MAX, process_event):
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state = lldb.SBProcess.GetStateFromEvent(process_event)
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if self.verbose:
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print("event = %s" % (lldb.SBDebugger.StateAsCString(state)))
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if lldb.SBProcess.GetRestartedFromEvent(process_event):
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continue
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if state == lldb.eStateInvalid or state == lldb.eStateDetached or state == lldb.eStateCrashed or state == lldb.eStateUnloaded or state == lldb.eStateExited:
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event = process_event
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self.done = True
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elif state == lldb.eStateConnected or state == lldb.eStateAttaching or state == lldb.eStateLaunching or state == lldb.eStateRunning or state == lldb.eStateStepping or state == lldb.eStateSuspended:
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continue
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elif state == lldb.eStateStopped:
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event = process_event
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call_test_step = True
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fatal = False
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selected_thread = False
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for thread in self.process:
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frame = thread.GetFrameAtIndex(0)
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select_thread = False
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stop_reason = thread.GetStopReason()
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if self.verbose:
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print("tid = %#x pc = %#x " % (thread.GetThreadID(), frame.GetPC()), end=' ')
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if stop_reason == lldb.eStopReasonNone:
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if self.verbose:
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print("none")
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elif stop_reason == lldb.eStopReasonTrace:
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select_thread = True
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if self.verbose:
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print("trace")
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elif stop_reason == lldb.eStopReasonPlanComplete:
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select_thread = True
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if self.verbose:
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print("plan complete")
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elif stop_reason == lldb.eStopReasonThreadExiting:
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if self.verbose:
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print("thread exiting")
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elif stop_reason == lldb.eStopReasonExec:
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if self.verbose:
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print("exec")
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elif stop_reason == lldb.eStopReasonInvalid:
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if self.verbose:
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print("invalid")
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elif stop_reason == lldb.eStopReasonException:
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select_thread = True
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if self.verbose:
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print("exception")
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fatal = True
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elif stop_reason == lldb.eStopReasonBreakpoint:
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select_thread = True
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bp_id = thread.GetStopReasonDataAtIndex(0)
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bp_loc_id = thread.GetStopReasonDataAtIndex(1)
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if self.verbose:
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print("breakpoint id = %d.%d" % (bp_id, bp_loc_id))
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elif stop_reason == lldb.eStopReasonWatchpoint:
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select_thread = True
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if self.verbose:
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print("watchpoint id = %d" % (thread.GetStopReasonDataAtIndex(0)))
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elif stop_reason == lldb.eStopReasonSignal:
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select_thread = True
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if self.verbose:
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print("signal %d" % (thread.GetStopReasonDataAtIndex(0)))
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elif stop_reason == lldb.eStopReasonFork:
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if self.verbose:
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print("fork pid = %d" % (thread.GetStopReasonDataAtIndex(0)))
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elif stop_reason == lldb.eStopReasonVFork:
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if self.verbose:
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print("vfork pid = %d" % (thread.GetStopReasonDataAtIndex(0)))
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elif stop_reason == lldb.eStopReasonVForkDone:
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if self.verbose:
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print("vfork done")
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if select_thread and not selected_thread:
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self.thread = thread
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selected_thread = self.process.SetSelectedThread(
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thread)
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for action in self.user_actions:
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action.ThreadStopped(thread)
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if fatal:
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# if self.verbose:
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# Xcode.RunCommand(self.debugger,"bt all",true)
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sys.exit(1)
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return event
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class Measurement:
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'''A class that encapsulates a measurement'''
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def __init__(self):
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object.__init__(self)
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def Measure(self):
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assert False, "performance.Measurement.Measure() must be subclassed"
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class MemoryMeasurement(Measurement):
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'''A class that can measure memory statistics for a process.'''
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def __init__(self, pid):
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Measurement.__init__(self)
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self.pid = pid
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self.stats = [
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"rprvt",
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"rshrd",
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"rsize",
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"vsize",
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"vprvt",
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"kprvt",
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"kshrd",
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"faults",
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"cow",
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"pageins"]
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self.command = "top -l 1 -pid %u -stats %s" % (
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self.pid, ",".join(self.stats))
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self.value = dict()
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def Measure(self):
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output = subprocess.getoutput(self.command).split("\n")[-1]
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values = re.split('[-+\s]+', output)
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for (idx, stat) in enumerate(values):
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multiplier = 1
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if stat:
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if stat[-1] == 'K':
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multiplier = 1024
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stat = stat[:-1]
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elif stat[-1] == 'M':
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multiplier = 1024 * 1024
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stat = stat[:-1]
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elif stat[-1] == 'G':
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multiplier = 1024 * 1024 * 1024
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elif stat[-1] == 'T':
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multiplier = 1024 * 1024 * 1024 * 1024
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stat = stat[:-1]
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self.value[self.stats[idx]] = int(stat) * multiplier
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def __str__(self):
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'''Dump the MemoryMeasurement current value'''
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s = ''
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for key in self.value.keys():
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if s:
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s += "\n"
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s += "%8s = %s" % (key, self.value[key])
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return s
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class TesterTestCase(TestCase):
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def __init__(self):
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TestCase.__init__(self)
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self.verbose = True
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self.num_steps = 5
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def BreakpointHit(self, thread):
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bp_id = thread.GetStopReasonDataAtIndex(0)
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loc_id = thread.GetStopReasonDataAtIndex(1)
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print("Breakpoint %i.%i hit: %s" % (bp_id, loc_id, thread.process.target.FindBreakpointByID(bp_id)))
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thread.StepOver()
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def PlanComplete(self, thread):
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if self.num_steps > 0:
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thread.StepOver()
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self.num_steps = self.num_steps - 1
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else:
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thread.process.Kill()
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def Run(self, args):
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self.Setup(args)
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with Timer() as total_time:
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self.target = self.debugger.CreateTarget(args[0])
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if self.target:
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with Timer() as breakpoint_timer:
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bp = self.target.BreakpointCreateByName("main")
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print(
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'Breakpoint time = %.03f sec.' %
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breakpoint_timer.interval)
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self.user_actions.append(
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BreakpointAction(
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breakpoint=bp,
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callback=TesterTestCase.BreakpointHit,
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callback_owner=self))
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self.user_actions.append(
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PlanCompleteAction(
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callback=TesterTestCase.PlanComplete,
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callback_owner=self))
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if self.Launch():
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while not self.done:
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self.WaitForNextProcessEvent()
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else:
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print("error: failed to launch process")
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else:
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print("error: failed to create target with '%s'" % (args[0]))
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print('Total time = %.03f sec.' % total_time.interval)
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if __name__ == '__main__':
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lldb.SBDebugger.Initialize()
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test = TesterTestCase()
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test.Run(sys.argv[1:])
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mem = MemoryMeasurement(os.getpid())
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mem.Measure()
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print(str(mem))
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lldb.SBDebugger.Terminate()
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# print "sleeeping for 100 seconds"
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# time.sleep(100)
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