Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(397)

Side by Side Diff: tools/drmemory/scripts/logging_utils.py

Issue 1452293002: Add Dr. Memory tool (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: remove more unused code Created 5 years, 1 month ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « tools/drmemory/scripts/drmemory_analyze.py ('k') | tools/drmemory/scripts/path_utils.py » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
(Empty)
1 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
4
5 ''' Utility functions and objects for logging.
6 '''
7
8 import logging
9 import sys
10
11 class StdoutStderrHandler(logging.Handler):
12 ''' Subclass of logging.Handler which outputs to either stdout or stderr
13 based on a threshold level.
14 '''
15
16 def __init__(self, threshold=logging.WARNING, err=sys.stderr, out=sys.stdout):
17 ''' Args:
18 threshold: below this logging level messages are sent to stdout,
19 otherwise they are sent to stderr
20 err: a stream object that error messages are sent to, defaults to
21 sys.stderr
22 out: a stream object that non-error messages are sent to, defaults to
23 sys.stdout
24 '''
25 logging.Handler.__init__(self)
26 self._err = logging.StreamHandler(err)
27 self._out = logging.StreamHandler(out)
28 self._threshold = threshold
29 self._last_was_err = False
30
31 def setLevel(self, lvl):
32 logging.Handler.setLevel(self, lvl)
33 self._err.setLevel(lvl)
34 self._out.setLevel(lvl)
35
36 def setFormatter(self, formatter):
37 logging.Handler.setFormatter(self, formatter)
38 self._err.setFormatter(formatter)
39 self._out.setFormatter(formatter)
40
41 def emit(self, record):
42 if record.levelno < self._threshold:
43 self._out.emit(record)
44 self._last_was_err = False
45 else:
46 self._err.emit(record)
47 self._last_was_err = False
48
49 def flush(self):
50 # preserve order on the flushing, the stalest stream gets flushed first
51 if self._last_was_err:
52 self._out.flush()
53 self._err.flush()
54 else:
55 self._err.flush()
56 self._out.flush()
57
58
59 FORMAT = "%(asctime)s %(filename)s [%(levelname)s] %(message)s"
60 DATEFMT = "%H:%M:%S"
61
62 def config_root(level=logging.INFO, threshold=logging.WARNING, format=FORMAT,
63 datefmt=DATEFMT):
64 ''' Configure the root logger to use a StdoutStderrHandler and some default
65 formatting.
66 Args:
67 level: messages below this level are ignored
68 threshold: below this logging level messages are sent to stdout,
69 otherwise they are sent to stderr
70 format: format for log messages, see logger.Format
71 datefmt: format for date in log messages
72
73 '''
74 # to set the handler of the root logging object, we need to do setup
75 # manually rather than using basicConfig
76 root = logging.getLogger()
77 root.setLevel(level)
78 formatter = logging.Formatter(format, datefmt)
79 handler = StdoutStderrHandler(threshold=threshold)
80 handler.setLevel(level)
81 handler.setFormatter(formatter)
82 root.addHandler(handler)
OLDNEW
« no previous file with comments | « tools/drmemory/scripts/drmemory_analyze.py ('k') | tools/drmemory/scripts/path_utils.py » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698