43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# GDB debugging support, TCG status
|
|
#
|
|
# Copyright 2016 Linaro Ltd
|
|
#
|
|
# Authors:
|
|
# Alex Bennée <alex.bennee@linaro.org>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2 or
|
|
# later. See the COPYING file in the top-level directory.
|
|
|
|
# 'qemu tcg-lock-status' -- display the TCG lock status across threads
|
|
|
|
import gdb
|
|
|
|
class TCGLockStatusCommand(gdb.Command):
|
|
'''Display TCG Execution Status'''
|
|
def __init__(self):
|
|
gdb.Command.__init__(self, 'qemu tcg-lock-status', gdb.COMMAND_DATA,
|
|
gdb.COMPLETE_NONE)
|
|
|
|
def invoke(self, arg, from_tty):
|
|
gdb.write("Thread, BQL (iothread_mutex), Replay, Blocked?\n")
|
|
for thread in gdb.inferiors()[0].threads():
|
|
thread.switch()
|
|
|
|
iothread = gdb.parse_and_eval("iothread_locked")
|
|
replay = gdb.parse_and_eval("replay_locked")
|
|
|
|
frame = gdb.selected_frame()
|
|
if frame.name() == "__lll_lock_wait":
|
|
frame.older().select()
|
|
mutex = gdb.parse_and_eval("mutex")
|
|
owner = gdb.parse_and_eval("mutex->__data.__owner")
|
|
blocked = ("__lll_lock_wait waiting on %s from %d" %
|
|
(mutex, owner))
|
|
else:
|
|
blocked = "not blocked"
|
|
|
|
gdb.write("%d/%d, %s, %s, %s\n" % (thread.num, thread.ptid[1],
|
|
iothread, replay, blocked))
|