timers.py (1850B)
1 # -*- coding: utf-8 -*- 2 # GDB debugging support 3 # 4 # Copyright 2017 Linaro Ltd 5 # 6 # Author: Alex Bennée <alex.bennee@linaro.org> 7 # 8 # This work is licensed under the terms of the GNU GPL, version 2 or later. 9 # See the COPYING file in the top-level directory. 10 # 11 # SPDX-License-Identifier: GPL-2.0-or-later 12 13 # 'qemu timers' -- display the current timerlists 14 15 import gdb 16 17 class TimersCommand(gdb.Command): 18 '''Display the current QEMU timers''' 19 20 def __init__(self): 21 'Register the class as a gdb command' 22 gdb.Command.__init__(self, 'qemu timers', gdb.COMMAND_DATA, 23 gdb.COMPLETE_NONE) 24 25 def dump_timers(self, timer): 26 "Follow a timer and recursively dump each one in the list." 27 # timer should be of type QemuTimer 28 gdb.write(" timer %s/%s (cb:%s,opq:%s)\n" % ( 29 timer['expire_time'], 30 timer['scale'], 31 timer['cb'], 32 timer['opaque'])) 33 34 if int(timer['next']) > 0: 35 self.dump_timers(timer['next']) 36 37 38 def process_timerlist(self, tlist, ttype): 39 gdb.write("Processing %s timers\n" % (ttype)) 40 gdb.write(" clock %s is enabled:%s, last:%s\n" % ( 41 tlist['clock']['type'], 42 tlist['clock']['enabled'], 43 tlist['clock']['last'])) 44 if int(tlist['active_timers']) > 0: 45 self.dump_timers(tlist['active_timers']) 46 47 48 def invoke(self, arg, from_tty): 49 'Run the command' 50 main_timers = gdb.parse_and_eval("main_loop_tlg") 51 52 # This will break if QEMUClockType in timer.h is redfined 53 self.process_timerlist(main_timers['tl'][0], "Realtime") 54 self.process_timerlist(main_timers['tl'][1], "Virtual") 55 self.process_timerlist(main_timers['tl'][2], "Host") 56 self.process_timerlist(main_timers['tl'][3], "Virtual RT")