Linux Perf
Core.py
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1 # Core.py - Python extension for perf script, core functions
2 #
3 # Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
4 #
5 # This software may be distributed under the terms of the GNU General
6 # Public License ("GPL") version 2 as published by the Free Software
7 # Foundation.
8 
9 from collections import defaultdict
10 
11 def autodict():
12  return defaultdict(autodict)
13 
14 flag_fields = autodict()
15 symbolic_fields = autodict()
16 
17 def define_flag_field(event_name, field_name, delim):
18  flag_fields[event_name][field_name]['delim'] = delim
19 
20 def define_flag_value(event_name, field_name, value, field_str):
21  flag_fields[event_name][field_name]['values'][value] = field_str
22 
23 def define_symbolic_field(event_name, field_name):
24  # nothing to do, really
25  pass
26 
27 def define_symbolic_value(event_name, field_name, value, field_str):
28  symbolic_fields[event_name][field_name]['values'][value] = field_str
29 
30 def flag_str(event_name, field_name, value):
31  string = ""
32 
33  if flag_fields[event_name][field_name]:
34  print_delim = 0
35  keys = flag_fields[event_name][field_name]['values'].keys()
36  keys.sort()
37  for idx in keys:
38  if not value and not idx:
39  string += flag_fields[event_name][field_name]['values'][idx]
40  break
41  if idx and (value & idx) == idx:
42  if print_delim and flag_fields[event_name][field_name]['delim']:
43  string += " " + flag_fields[event_name][field_name]['delim'] + " "
44  string += flag_fields[event_name][field_name]['values'][idx]
45  print_delim = 1
46  value &= ~idx
47 
48  return string
49 
50 def symbol_str(event_name, field_name, value):
51  string = ""
52 
53  if symbolic_fields[event_name][field_name]:
54  keys = symbolic_fields[event_name][field_name]['values'].keys()
55  keys.sort()
56  for idx in keys:
57  if not value and not idx:
58  string = symbolic_fields[event_name][field_name]['values'][idx]
59  break
60  if (value == idx):
61  string = symbolic_fields[event_name][field_name]['values'][idx]
62  break
63 
64  return string
65 
66 trace_flags = { 0x00: "NONE", \
67  0x01: "IRQS_OFF", \
68  0x02: "IRQS_NOSUPPORT", \
69  0x04: "NEED_RESCHED", \
70  0x08: "HARDIRQ", \
71  0x10: "SOFTIRQ" }
72 
73 def trace_flag_str(value):
74  string = ""
75  print_delim = 0
76 
77  keys = trace_flags.keys()
78 
79  for idx in keys:
80  if not value and not idx:
81  string += "NONE"
82  break
83 
84  if idx and (value & idx) == idx:
85  if print_delim:
86  string += " | ";
87  string += trace_flags[idx]
88  print_delim = 1
89  value &= ~idx
90 
91  return string
92 
93 
94 def taskState(state):
95  states = {
96  0 : "R",
97  1 : "S",
98  2 : "D",
99  64: "DEAD"
100  }
101 
102  if state not in states:
103  return "Unknown"
104 
105  return states[state]
106 
107 
109  def __init__(self, common_cpu, common_secs, common_nsecs,
110  common_pid, common_comm, common_callchain):
111  self.cpu = common_cpu
112  self.secs = common_secs
113  self.nsecs = common_nsecs
114  self.pid = common_pid
115  self.comm = common_comm
116  self.callchain = common_callchain
117 
118  def ts(self):
119  return (self.secs * (10 ** 9)) + self.nsecs
120 
121  def ts_format(self):
122  return "%d.%d" % (self.secs, int(self.nsecs / 1000))
struct lock_key keys[]
Definition: builtin-lock.c:252
def define_symbolic_field(event_name, field_name)
Definition: Core.py:23
def define_flag_value(event_name, field_name, value, field_str)
Definition: Core.py:20
def flag_str(event_name, field_name, value)
Definition: Core.py:30
def ts_format(self)
Definition: Core.py:121
def trace_flag_str(value)
Definition: Core.py:73
def __init__(self, common_cpu, common_secs, common_nsecs, common_pid, common_comm, common_callchain)
Definition: Core.py:110
def ts(self)
Definition: Core.py:118
def define_symbolic_value(event_name, field_name, value, field_str)
Definition: Core.py:27
def taskState(state)
Definition: Core.py:94
def symbol_str(event_name, field_name, value)
Definition: Core.py:50
def autodict()
Definition: Core.py:11
def define_flag_field(event_name, field_name, delim)
Definition: Core.py:17