def lttng_stop():
ret = lttng.stop(session_name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
ret = lttng.destroy(session_name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
def lttng_stop():
ret = lttng.stop(session_name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
ret = lttng.destroy(session_name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
def __init__(self, sess_type, **kwargs):
self.name = 'untitled_'+sess_type if kwargs.get('name')==None else kwargs.get('name')
self.path = '/lttng-traces/'+self.name if kwargs.get('path')==None else kwargs.get('path')+'/'+self.name
# Making sure session does not already exist
lttng.destroy(self.name)
#Creating LTTng session domain
self.domain = lttng.Domain()
if sess_type=='kernel':
self.domain.type = lttng.DOMAIN_KERNEL
elif sess_type=='ust':
self.domain.type = lttng.DOMAIN_UST
else:
print("invalid tracing session type '%r', session not created" %(sess_type))
#Enabling channel
self.channel = lttng.Channel()
self.channel.name="channel_1"
self.channel.attr.overwrite = 0
self.channel.attr.subbuf_size = 4096
self.channel.attr.num_subbuf = 8
self.channel.attr.switch_timer_interval = 0
self.channel.attr.read_timer_interval = 200
self.channel.attr.output = lttng.EVENT_MMAP
#creating handle
self.handle = None
self.handle = lttng.Handle(self.name, self.domain)
if self.handle is None:
raise LTTngError("Handle not created")
#creating session
ret = lttng.create(self.name,self.path)
if ret < 0:
raise LTTngError(lttng.strerror(ret))
#enabling channel on handle
lttng.enable_channel(self.handle, self.channel)
# Enabling all events
self.event = lttng.Event()
self.event.type = lttng.EVENT_ALL
self.event.loglevel_type = lttng.EVENT_LOGLEVEL_ALL
print
ret = lttng.enable_event(self.handle, self.event, self.channel.name)
if ret < 0:
raise LTTngError(lttng.strerror(ret))
def lttng_start(events=["*"], domain_type=lttng.DOMAIN_UST):
if lttng.session_daemon_alive() == 0:
daemon_cmd = "lttng-sessiond --background"
daemon_cmd += " --pidfile " + sessiond_pidfile
subprocess.check_call(daemon_cmd,
shell=True,
stdout=sessiond_logfile,
stderr=sessiond_logfile)
lttng.destroy(session_name)
ret = lttng.create_snapshot(session_name, trace_path)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
domain = lttng.Domain()
domain.type = domain_type
channel = lttng.Channel()
channel.name = "channel0"
lttng.channel_set_default_attr(domain, channel.attr)
han = lttng.Handle(session_name, domain)
if han is None:
raise RuntimeError("LTTng: failed to create handle")
ret = lttng.enable_channel(han, channel)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
for name in events:
event = lttng.Event()
event.name = name
event.type = lttng.EVENT_TRACEPOINT
event.loglevel = lttng.EVENT_LOGLEVEL_ALL
ret = lttng.enable_event(han, event, channel.name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
ret = lttng.start(session_name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
def lttng_start(events = ["*"], domain_type = lttng.DOMAIN_UST):
if lttng.session_daemon_alive() == 0:
daemon_cmd = "lttng-sessiond --daemonize --quiet"
daemon_cmd += " --pidfile " + sessiond_pidfile
subprocess.check_call(daemon_cmd, shell=True)
lttng.destroy(session_name)
ret = lttng.create_snapshot(session_name, trace_path)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
domain = lttng.Domain()
domain.type = domain_type
channel = lttng.Channel()
channel.name = "channel0"
lttng.channel_set_default_attr(domain, channel.attr)
han = lttng.Handle(session_name, domain)
if han is None:
raise RuntimeError("LTTng: failed to create handle")
ret = lttng.enable_channel(han, channel)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
for name in events:
event = lttng.Event()
event.name = name
event.type = lttng.EVENT_TRACEPOINT
event.loglevel = lttng.EVENT_LOGLEVEL_ALL
ret = lttng.enable_event(han, event, channel.name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
ret = lttng.start(session_name)
if ret < 0:
raise RuntimeError("LTTng: " + lttng.strerror(ret))
pass
class BabeltraceError(Exception):
pass
# LTTNG-TOOLS
# Making sure session does not already exist
lttng.destroy(ses_name)
# Creating a new session and handle
ret = lttng.create(ses_name, trace_path)
if ret < 0:
raise LTTngError(lttng.strerror(ret))
domain = lttng.Domain()
domain.type = lttng.DOMAIN_KERNEL
han = None
han = lttng.Handle(ses_name, domain)
if han is None:
raise LTTngError("Handle not created")
# Enabling all events
event = lttng.Event()
event.type = lttng.EVENT_ALL
event.loglevel_type = lttng.EVENT_LOGLEVEL_ALL
ret = lttng.enable_event(han, event, None)
if ret < 0:
pass
class BabeltraceError(Exception):
pass
# LTTNG-TOOLS
# Making sure session does not already exist
lttng.destroy(ses_name)
# Creating a new session and handle
ret = lttng.create(ses_name, trace_path)
if ret < 0:
raise LTTngError(lttng.strerror(ret))
domain = lttng.Domain()
domain.type = lttng.DOMAIN_KERNEL
han = None
han = lttng.Handle(ses_name, domain)
if han is None:
raise LTTngError("Handle not created")
# Enabling all events
event = lttng.Event()
event.type = lttng.EVENT_ALL
event.loglevel_type = lttng.EVENT_LOGLEVEL_ALL
ret = lttng.enable_event(han, event, None)
def destroy(self): ret = lttng.destroy(self.name) if ret < 0: raise LTTngError(lttng.strerror(ret))
def stop(self): ret = lttng.stop(self.name) if ret < 0: raise LTTngError(lttng.strerror(ret))
