from xnu import *
from scheduler import GetRecentTimestamp
import xnudefines
def GetProcWorkqueue(proc):
wq = proc.p_wqptr;
if unsigned(wq):
return Cast(wq, "struct workqueue *");
return None
@header("{:<20s} {:<20s} {:<20s} {:<10s} {:<10s} {:<10s} {:<10s} {:<10s} {:<10s} {:<30s}".format(
'task', 'proc', 'wq', 'sched', 'pending', 'idle', 'dying', 'creations', 'fulfilled', 'wq_flags'))
def GetWorkqueueSummary(proc, wq):
wq_flags = []
if wq.wq_flags & GetEnumValue("workq_state_flags_t::WQ_EXITING"):
wq_flags.append("EXITING")
if wq.wq_flags & GetEnumValue("workq_state_flags_t::WQ_PROC_SUSPENDED"):
wq_flags.append("PROC_SUSPENDED")
if wq.wq_flags & GetEnumValue("workq_state_flags_t::WQ_DEATH_CALL_SCHEDULED"):
wq_flags.append("DEATH_CALL")
scheduled = GetEnumValue("workq_state_flags_t::WQ_DELAYED_CALL_SCHEDULED")
pended = GetEnumValue("workq_state_flags_t::WQ_DELAYED_CALL_PENDED")
if wq.wq_flags & (scheduled | pended):
s = "DELAYED_CALL["
if wq.wq_flags & scheduled: s += 'S'
if wq.wq_flags & pended: s += 'P'
s += ']'
wq_flags.append(s)
scheduled = GetEnumValue("workq_state_flags_t::WQ_IMMEDIATE_CALL_SCHEDULED")
pended = GetEnumValue("workq_state_flags_t::WQ_IMMEDIATE_CALL_PENDED")
if wq.wq_flags & (scheduled | pended):
s = "IMMEDIATE_CALL["
if wq.wq_flags & scheduled: s += 'S'
if wq.wq_flags & pended: s += 'P'
s += ']'
wq_flags.append(s)
return "{p.task: <#020x} {p: <#020x} {wq: <#020x} {wq.wq_threads_scheduled: <10d} {wq.wq_reqcount: <10d} {wq.wq_thidlecount: <10d} {wq.wq_thdying_count: <10d} {wq.wq_creations: <10d} {wq.wq_fulfilled: <10d} {wq_flags: <30s}".format(p=proc, wq=wq, wq_flags=" ".join(wq_flags));
@header("{:<20s} {:<20s} {:>10s} {:9s} {:<20s} {:<10s} {:<30s}".format(
'thread', 'uthread', 'thport', 'kind', 'kqueue', 'idle (ms)', 'uu_workq_flags'))
def GetWQThreadSummary(th, uth):
p = Cast(th.task.bsd_info, 'proc *')
wq = p.p_wqptr
uu_workq_flags = []
if uth.uu_workq_flags & 0x01: uu_workq_flags.append("NEW")
if uth.uu_workq_flags & 0x02:
uu_workq_flags.append("RUNNING")
if wq.wq_creator == uth:
kind = "creator"
else:
kind = "workq"
idle = ""
else:
ts = kern.GetNanotimeFromAbstime(GetRecentTimestamp() - uth.uu_save.uus_workq_park_data.idle_stamp) / 1e9
kind = "idle"
idle = "%#.03f" % (ts)
if uth.uu_workq_flags & 0x04: uu_workq_flags.append("DYING")
if uth.uu_workq_flags & 0x08: uu_workq_flags.append("OVERCOMMIT")
if uth.uu_workq_flags & 0x10: uu_workq_flags.append("OUTSIDE_QOS")
if uth.uu_workq_flags & 0x20: uu_workq_flags.append("IDLE_CLEANUP")
if uth.uu_workq_flags & 0x40: uu_workq_flags.append("EARLY_BOUND")
if uth.uu_workq_flags & 0x80: uu_workq_flags.append("CPU%")
kqr = uth.uu_kqr_bound
if not kqr:
kq = 0
elif kqr.tr_flags & 0x1: kq = p.p_fd.fd_wqkqueue
kind = "kqwq[%s]" % (xnudefines.thread_qos_short_strings[int(kqr.tr_kq_qos_index)])
elif kqr.tr_flags & 0x2: kq = ContainerOf(kqr, 'struct kqworkloop', 'kqwl_request')
kind = "workloop"
else:
kq = 0
kind = "???"
return "{th: <#020x} {uth: <#020x} {thport: >#010x} {kind: <9s} {kq: <#020x} {idle: <10s} {uu_workq_flags: <30s}".format(th=th, uth=uth, thport=uth.uu_workq_thport, kind=kind, kq=kq, idle=idle, uu_workq_flags=" ".join(uu_workq_flags))
@header("{:<20s} {:<20s} {:<20s} {:<10s} {:<4s} {:<6s} {:<6s} {:<6s} {:<30s}".format(
'request', 'kqueue', 'thread', 'state', '#', 'qos', 'kq_qos', 'kq_ovr', 'tr_flags'))
def GetWorkqueueThreadRequestSummary(proc, req):
kq = 0
tr_flags = []
if req.tr_flags & 0x01:
tr_flags.append("KEVENT")
kq = proc.p_fd.fd_wqkqueue
if req.tr_flags & 0x02:
tr_flags.append("WORKLOOP")
kq = ContainerOf(req, 'struct kqworkloop', 'kqwl_request')
if req.tr_flags & 0x04: tr_flags.append("OVERCOMMIT")
if req.tr_flags & 0x08: tr_flags.append("PARAMS")
if req.tr_flags & 0x10: tr_flags.append("OUTSIDE_QOS")
state = {0: "IDLE", 1: "NEW", 2: "QUEUED", 3: "CANCELED", 4: "BINDING", 5: "BOUND" }[int(req.tr_state)]
if req.tr_kq_wakeup: state += "*"
thread = 0
if int(req.tr_state) in [3, 4]:
thread = req.tr_thread
qos = int(req.tr_qos)
if qos == 8:
qos = "MG"
elif qos == 7:
qos = "SP"
else:
qos = xnudefines.thread_qos_short_strings[qos]
kq_qos = xnudefines.thread_qos_short_strings[int(req.tr_kq_qos_index)]
kq_ovr = xnudefines.thread_qos_short_strings[int(req.tr_kq_override_index)]
req_addr = unsigned(addressof(req))
return "{req_addr: <#020x} {kq: <#020x} {thread: <#020x} {state: <10s} {req.tr_count: <4d} {qos: <6s} {kq_qos: <6s} {kq_ovr: <6s} {tr_flags: <30s}".format(
req_addr=req_addr, req=req, kq=kq, thread=thread, state=state, qos=qos, kq_qos=kq_qos, kq_ovr=kq_ovr, tr_flags=" ".join(tr_flags))
@lldb_command('showwqthread', fancy=True)
def ShowWQThread(cmd_args=None, cmd_options={}, O=None):
""" Shows info about a workqueue thread
usage: showworkqthread <thread_t>
"""
if not cmd_args:
return O.error('missing struct proc * argument')
th = kern.GetValueFromAddress(cmd_args[0], "struct thread *")
if not (th.thread_tag & 0x20):
raise ArgumentError('not a workqueue thread')
with O.table(GetWQThreadSummary.header):
print GetWQThreadSummary(th, Cast(th.uthread, 'struct uthread *'))
@lldb_command('showprocworkqueue', fancy=True)
def ShowProcWorkqueue(cmd_args=None, cmd_options={}, O=None):
""" Shows the process workqueue
usage: showprocworkqueue <proc_t>
"""
if not cmd_args:
return O.error('missing struct proc * argument')
proc = kern.GetValueFromAddress(cmd_args[0], "proc_t")
wq = Cast(proc.p_wqptr, "struct workqueue *");
if not wq:
return O.error("{:#x} doesn't have a workqueue", proc)
with O.table(GetWorkqueueSummary.header):
print GetWorkqueueSummary(proc, wq)
with O.table(GetWorkqueueThreadRequestSummary.header, indent=True):
if wq.wq_reqcount:
print ""
if wq.wq_event_manager_threadreq:
print GetWorkqueueThreadRequestSummary(proc, wq.wq_event_manager_threadreq)
for req in IteratePriorityQueue(wq.wq_overcommit_queue, 'struct workq_threadreq_s', 'tr_entry'):
print GetWorkqueueThreadRequestSummary(proc, req)
for req in IteratePriorityQueue(wq.wq_constrained_queue, 'struct workq_threadreq_s', 'tr_entry'):
print GetWorkqueueThreadRequestSummary(proc, req)
for req in IteratePriorityQueue(wq.wq_special_queue, 'struct workq_threadreq_s', 'tr_entry'):
print GetWorkqueueThreadRequestSummary(proc, req)
with O.table(GetWQThreadSummary.header, indent=True):
print ""
for uth in IterateTAILQ_HEAD(wq.wq_thrunlist, "uu_workq_entry"):
print GetWQThreadSummary(Cast(uth.uu_thread, 'struct thread *'), uth)
for uth in IterateTAILQ_HEAD(wq.wq_thidlelist, "uu_workq_entry"):
print GetWQThreadSummary(Cast(uth.uu_thread, 'struct thread *'), uth)
for uth in IterateTAILQ_HEAD(wq.wq_thnewlist, "uu_workq_entry"):
print GetWQThreadSummary(Cast(uth.uu_thread, 'struct thread *'), uth)
@lldb_command('showallworkqueues', fancy=True)
def ShowAllWorkqueues(cmd_args=None, cmd_options={}, O=None):
""" Display a summary of all the workqueues in the system
usage: showallworkqueues
"""
with O.table(GetWorkqueueSummary.header):
for t in kern.tasks:
proc = Cast(t.bsd_info, 'proc *')
wq = Cast(proc.p_wqptr, "struct workqueue *");
if wq:
print GetWorkqueueSummary(proc, wq)