Fix PEP8 in lldb_batchmode.py
This commit is contained in:
Richo Healey
parent
958dea1745
commit
f697a06da4
1 changed files with 103 additions and 97 deletions
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@ -30,36 +30,35 @@ import sys
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import threading
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import thread
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import re
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import atexit
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import time
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# Set this to True for additional output
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DEBUG_OUTPUT = False
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def print_debug(s):
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"Print something if DEBUG_OUTPUT is True"
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global DEBUG_OUTPUT
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if DEBUG_OUTPUT:
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print("DEBUG: " + str(s))
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"Print something if DEBUG_OUTPUT is True"
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global DEBUG_OUTPUT
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if DEBUG_OUTPUT:
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print("DEBUG: " + str(s))
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def normalize_whitespace(s):
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"Replace newlines, tabs, multiple spaces, etc with exactly one space"
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return re.sub("\s+", " ", s)
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"Replace newlines, tabs, multiple spaces, etc with exactly one space"
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return re.sub("\s+", " ", s)
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# This callback is registered with every breakpoint and makes sure that the frame containing the
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# breakpoint location is selected
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def breakpoint_callback(frame, bp_loc, dict):
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"Called whenever a breakpoint is hit"
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print("Hit breakpoint " + str(bp_loc))
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"""This callback is registered with every breakpoint and makes sure that the
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frame containing the breakpoint location is selected"""
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print("Hit breakpoint " + str(bp_loc))
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# Select the frame and the thread containing it
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frame.thread.process.SetSelectedThread(frame.thread)
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frame.thread.SetSelectedFrame(frame.idx)
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# Select the frame and the thread containing it
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frame.thread.process.SetSelectedThread(frame.thread)
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frame.thread.SetSelectedFrame(frame.idx)
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# Returning True means that we actually want to stop at this breakpoint
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return True
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# Returning True means that we actually want to stop at this breakpoint
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return True
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# This is a list of breakpoints that are not registered with the breakpoint callback. The list is
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@ -70,91 +69,99 @@ new_breakpoints = []
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# used to avoid hooking callbacks into breakpoints more than once
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registered_breakpoints = set()
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def execute_command(command_interpreter, command):
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"Executes a single CLI command"
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global new_breakpoints
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global registered_breakpoints
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"Executes a single CLI command"
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global new_breakpoints
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global registered_breakpoints
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res = lldb.SBCommandReturnObject()
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print(command)
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command_interpreter.HandleCommand(command, res)
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res = lldb.SBCommandReturnObject()
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print(command)
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command_interpreter.HandleCommand(command, res)
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if res.Succeeded():
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if res.HasResult():
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print(normalize_whitespace(res.GetOutput()), end = '\n')
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if res.Succeeded():
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if res.HasResult():
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print(normalize_whitespace(res.GetOutput()), end='\n')
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# If the command introduced any breakpoints, make sure to register them with the breakpoint
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# callback
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while len(new_breakpoints) > 0:
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res.Clear()
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breakpoint_id = new_breakpoints.pop()
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# If the command introduced any breakpoints, make sure to register
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# them with the breakpoint
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# callback
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while len(new_breakpoints) > 0:
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res.Clear()
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breakpoint_id = new_breakpoints.pop()
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if breakpoint_id in registered_breakpoints:
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print_debug("breakpoint with id %s is already registered. Ignoring." % str(breakpoint_id))
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else:
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print_debug("registering breakpoint callback, id = " + str(breakpoint_id))
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callback_command = "breakpoint command add -F breakpoint_callback " + str(breakpoint_id)
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command_interpreter.HandleCommand(callback_command, res)
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if res.Succeeded():
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print_debug("successfully registered breakpoint callback, id = " + str(breakpoint_id))
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registered_breakpoints.add(breakpoint_id)
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else:
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print("Error while trying to register breakpoint callback, id = " + str(breakpoint_id))
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else:
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print(res.GetError())
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if breakpoint_id in registered_breakpoints:
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print_debug("breakpoint with id %s is already registered. Ignoring." %
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str(breakpoint_id))
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else:
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print_debug("registering breakpoint callback, id = " + str(breakpoint_id))
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callback_command = ("breakpoint command add -F breakpoint_callback " +
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str(breakpoint_id))
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command_interpreter.HandleCommand(callback_command, res)
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if res.Succeeded():
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print_debug("successfully registered breakpoint callback, id = " +
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str(breakpoint_id))
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registered_breakpoints.add(breakpoint_id)
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else:
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print("Error while trying to register breakpoint callback, id = " +
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str(breakpoint_id))
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else:
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print(res.GetError())
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def start_breakpoint_listener(target):
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"Listens for breakpoints being added and adds new ones to the callback registration list"
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listener = lldb.SBListener("breakpoint listener")
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"""Listens for breakpoints being added and adds new ones to the callback
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registration list"""
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listener = lldb.SBListener("breakpoint listener")
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def listen():
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event = lldb.SBEvent()
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try:
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while True:
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if listener.WaitForEvent(120, event):
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if lldb.SBBreakpoint.EventIsBreakpointEvent(event) and \
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lldb.SBBreakpoint.GetBreakpointEventTypeFromEvent(event) == \
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lldb.eBreakpointEventTypeAdded:
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global new_breakpoints
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breakpoint = lldb.SBBreakpoint.GetBreakpointFromEvent(event)
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print_debug("breakpoint added, id = " + str(breakpoint.id))
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new_breakpoints.append(breakpoint.id)
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except:
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print_debug("breakpoint listener shutting down")
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def listen():
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event = lldb.SBEvent()
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try:
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while True:
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if listener.WaitForEvent(120, event):
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if lldb.SBBreakpoint.EventIsBreakpointEvent(event) and \
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lldb.SBBreakpoint.GetBreakpointEventTypeFromEvent(event) == \
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lldb.eBreakpointEventTypeAdded:
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global new_breakpoints
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breakpoint = lldb.SBBreakpoint.GetBreakpointFromEvent(event)
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print_debug("breakpoint added, id = " + str(breakpoint.id))
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new_breakpoints.append(breakpoint.id)
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except:
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print_debug("breakpoint listener shutting down")
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# Start the listener and let it run as a daemon
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listener_thread = threading.Thread(target = listen)
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listener_thread.daemon = True
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listener_thread.start()
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# Start the listener and let it run as a daemon
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listener_thread = threading.Thread(target=listen)
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listener_thread.daemon = True
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listener_thread.start()
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# Register the listener with the target
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target.GetBroadcaster().AddListener(listener, lldb.SBTarget.eBroadcastBitBreakpointChanged)
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# Register the listener with the target
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target.GetBroadcaster().AddListener(listener, lldb.SBTarget.eBroadcastBitBreakpointChanged)
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def start_watchdog():
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"Starts a watchdog thread that will terminate the process after a certain period of time"
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watchdog_start_time = time.clock()
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watchdog_max_time = watchdog_start_time + 30
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"""Starts a watchdog thread that will terminate the process after a certain
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period of time"""
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watchdog_start_time = time.clock()
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watchdog_max_time = watchdog_start_time + 30
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def watchdog():
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while time.clock() < watchdog_max_time:
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time.sleep(1)
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print("TIMEOUT: lldb_batchmode.py has been running for too long. Aborting!")
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thread.interrupt_main()
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def watchdog():
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while time.clock() < watchdog_max_time:
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time.sleep(1)
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print("TIMEOUT: lldb_batchmode.py has been running for too long. Aborting!")
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thread.interrupt_main()
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# Start the listener and let it run as a daemon
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watchdog_thread = threading.Thread(target = watchdog)
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watchdog_thread.daemon = True
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watchdog_thread.start()
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# Start the listener and let it run as a daemon
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watchdog_thread = threading.Thread(target=watchdog)
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watchdog_thread.daemon = True
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watchdog_thread.start()
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####################################################################################################
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# ~main
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####################################################################################################
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if len(sys.argv) != 3:
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print("usage: python lldb_batchmode.py target-path script-path")
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sys.exit(1)
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print("usage: python lldb_batchmode.py target-path script-path")
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sys.exit(1)
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target_path = sys.argv[1]
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script_path = sys.argv[2]
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@ -181,9 +188,9 @@ target_error = lldb.SBError()
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target = debugger.CreateTarget(target_path, None, None, True, target_error)
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if not target:
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print("Could not create debugging target '" + target_path + "': " + str(target_error) +
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". Aborting.", file=sys.stderr)
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sys.exit(1)
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print("Could not create debugging target '" + target_path + "': " +
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str(target_error) + ". Aborting.", file=sys.stderr)
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sys.exit(1)
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# Register the breakpoint callback for every breakpoint
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@ -192,22 +199,21 @@ start_breakpoint_listener(target)
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command_interpreter = debugger.GetCommandInterpreter()
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try:
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script_file = open(script_path, 'r')
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script_file = open(script_path, 'r')
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for line in script_file:
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command = line.strip()
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if command == "run" or command == "r" or re.match("^process\s+launch.*", command):
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# Before starting to run the program, let the thread sleep a bit, so all
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# breakpoint added events can be processed
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time.sleep(0.5)
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if command != '':
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execute_command(command_interpreter, command)
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for line in script_file:
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command = line.strip()
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if command == "run" or command == "r" or re.match("^process\s+launch.*", command):
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# Before starting to run the program, let the thread sleep a bit, so all
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# breakpoint added events can be processed
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time.sleep(0.5)
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if command != '':
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execute_command(command_interpreter, command)
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except IOError as e:
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print("Could not read debugging script '%s'." % script_path, file = sys.stderr)
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print(e, file = sys.stderr)
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print("Aborting.", file = sys.stderr)
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sys.exit(1)
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print("Could not read debugging script '%s'." % script_path, file=sys.stderr)
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print(e, file=sys.stderr)
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print("Aborting.", file=sys.stderr)
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sys.exit(1)
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finally:
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script_file.close()
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script_file.close()
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