2 # -*- coding: utf-8 -*-
4 # GDB debugging support, TCG status
6 # Copyright 2016 Linaro Ltd
9 # Alex Bennée <alex.bennee@linaro.org>
11 # This work is licensed under the terms of the GNU GPL, version 2 or
12 # later. See the COPYING file in the top-level directory.
14 # 'qemu tcg-lock-status' -- display the TCG lock status across threads
18 class TCGLockStatusCommand(gdb
.Command
):
19 '''Display TCG Execution Status'''
21 gdb
.Command
.__init
__(self
, 'qemu tcg-lock-status', gdb
.COMMAND_DATA
,
24 def invoke(self
, arg
, from_tty
):
25 gdb
.write("Thread, BQL (iothread_mutex), Replay, Blocked?\n")
26 for thread
in gdb
.inferiors()[0].threads():
29 iothread
= gdb
.parse_and_eval("iothread_locked")
30 replay
= gdb
.parse_and_eval("replay_locked")
32 frame
= gdb
.selected_frame()
33 if frame
.name() == "__lll_lock_wait":
34 frame
.older().select()
35 mutex
= gdb
.parse_and_eval("mutex")
36 owner
= gdb
.parse_and_eval("mutex->__data.__owner")
37 blocked
= ("__lll_lock_wait waiting on %s from %d" %
40 blocked
= "not blocked"
42 gdb
.write("%d/%d, %s, %s, %s\n" % (thread
.num
, thread
.ptid
[1],
43 iothread
, replay
, blocked
))