def process(events, log, analyzer, read_header=True):
"""Invoke an analyzer on each event in a log."""
if isinstance(events, str):
events = read_events(open(events, 'r'), events)
if isinstance(log, str):
log = open(log, 'rb')
if read_header:
read_trace_header(log)
frameinfo = inspect.getframeinfo(inspect.currentframe())
dropped_event = Event.build("Dropped_Event(uint64_t num_events_dropped)",
frameinfo.lineno + 1, frameinfo.filename)
edict = {"dropped": dropped_event}
idtoname = {dropped_event_id: "dropped"}
for event in events:
edict[event.name] = event
# If there is no header assume event ID mapping matches events list
if not read_header:
for event_id, event in enumerate(events):
idtoname[event_id] = event.name
def build_fn(analyzer, event):
if isinstance(event, str):
return analyzer.catchall
fn = getattr(analyzer, event.name, None)
if fn is None:
return analyzer.catchall
event_argcount = len(event.args)
fn_argcount = len(inspect.getargspec(fn)[0]) - 1
if fn_argcount == event_argcount + 1:
# Include timestamp as first argument
return lambda _, rec: fn(*(rec[1:2] + rec[3:3 + event_argcount]))
elif fn_argcount == event_argcount + 2:
# Include timestamp and pid
return lambda _, rec: fn(*rec[1:3 + event_argcount])
else:
# Just arguments, no timestamp or pid
return lambda _, rec: fn(*rec[3:3 + event_argcount])
analyzer.begin()
fn_cache = {}
for rec in read_trace_records(edict, idtoname, log):
event_num = rec[0]
event = edict[event_num]
if event_num not in fn_cache:
fn_cache[event_num] = build_fn(analyzer, event)
fn_cache[event_num](event, rec)
analyzer.end()
def process(events, log, analyzer, read_header=True):
"""Invoke an analyzer on each event in a log."""
if isinstance(events, str):
events = read_events(open(events, 'r'))
if isinstance(log, str):
log = open(log, 'rb')
if read_header:
read_trace_header(log)
dropped_event = Event.build("Dropped_Event(uint64_t num_events_dropped)")
edict = {"dropped": dropped_event}
idtoname = {dropped_event_id: "dropped"}
for event in events:
edict[event.name] = event
# If there is no header assume event ID mapping matches events list
if not read_header:
for event_id, event in enumerate(events):
idtoname[event_id] = event.name
def build_fn(analyzer, event):
if isinstance(event, str):
return analyzer.catchall
fn = getattr(analyzer, event.name, None)
if fn is None:
return analyzer.catchall
event_argcount = len(event.args)
fn_argcount = len(inspect.getargspec(fn)[0]) - 1
if fn_argcount == event_argcount + 1:
# Include timestamp as first argument
return lambda _, rec: fn(*((rec[1:2],) + rec[3:3 + event_argcount]))
elif fn_argcount == event_argcount + 2:
# Include timestamp and pid
return lambda _, rec: fn(*rec[1:3 + event_argcount])
else:
# Just arguments, no timestamp or pid
return lambda _, rec: fn(*rec[3:3 + event_argcount])
analyzer.begin()
fn_cache = {}
for rec in read_trace_records(edict, idtoname, log):
event_num = rec[0]
event = edict[event_num]
if event_num not in fn_cache:
fn_cache[event_num] = build_fn(analyzer, event)
fn_cache[event_num](event, rec)
analyzer.end()
def process(events, log, analyzer, read_header=True):
"""Invoke an analyzer on each event in a log."""
if isinstance(events, str):
events = read_events(open(events, 'r'))
if isinstance(log, str):
log = open(log, 'rb')
if read_header:
read_trace_header(log)
dropped_event = Event.build("Dropped_Event(uint64_t num_events_dropped)")
edict = {"dropped": dropped_event}
for event in events:
edict[event.name] = event
def build_fn(analyzer, event):
if isinstance(event, str):
return analyzer.catchall
fn = getattr(analyzer, event.name, None)
if fn is None:
return analyzer.catchall
event_argcount = len(event.args)
fn_argcount = len(inspect.getargspec(fn)[0]) - 1
if fn_argcount == event_argcount + 1:
# Include timestamp as first argument
return lambda _, rec: fn(*(
(rec[1:2], ) + rec[3:3 + event_argcount]))
elif fn_argcount == event_argcount + 2:
# Include timestamp and pid
return lambda _, rec: fn(*rec[1:3 + event_argcount])
else:
# Just arguments, no timestamp or pid
return lambda _, rec: fn(*rec[3:3 + event_argcount])
analyzer.begin()
fn_cache = {}
for rec in read_trace_records(edict, log):
event_num = rec[0]
event = edict[event_num]
if event_num not in fn_cache:
fn_cache[event_num] = build_fn(analyzer, event)
fn_cache[event_num](event, rec)
analyzer.end()
def run(analyzer):
"""Execute an analyzer on a trace file given on the command-line.
This function is useful as a driver for simple analysis scripts. More
advanced scripts will want to call process() instead."""
import sys
read_header = True
if len(sys.argv) == 4 and sys.argv[1] == '--no-header':
read_header = False
del sys.argv[1]
elif len(sys.argv) != 3:
sys.stderr.write('usage: %s [--no-header] <trace-events> ' \
'<trace-file>\n' % sys.argv[0])
sys.exit(1)
events = read_events(open(sys.argv[1], 'r'))
process(events, sys.argv[2], analyzer, read_header=read_header)
def run(analyzer):
"""Execute an analyzer on a trace file given on the command-line.
This function is useful as a driver for simple analysis scripts. More
advanced scripts will want to call process() instead."""
import sys
read_header = True
if len(sys.argv) == 4 and sys.argv[1] == '--no-header':
read_header = False
del sys.argv[1]
elif len(sys.argv) != 3:
sys.stderr.write('usage: %s [--no-header] <trace-events> ' \
'<trace-file>\n' % sys.argv[0])
sys.exit(1)
events = read_events(open(sys.argv[1], 'r'))
process(events, sys.argv[2], analyzer, read_header=read_header)