mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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6ef77f05f6
This patch adds UseCounter.conf for defining use counters along with infrastructure to generate enums and telemetry identifiers from UseCounter.conf.
79 lines
3.2 KiB
Python
79 lines
3.2 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import buildconfig
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import collections
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import re
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import StringIO
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import sys
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from mozbuild.preprocessor import preprocess
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def read_conf(conf_filename):
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# Invoking the preprocessor ourselves is easier than writing build rules
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# to do it for us.
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processed = StringIO.StringIO()
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preprocess(includes=[conf_filename],
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defines=buildconfig.defines,
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output=processed)
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# Can't read/write from a single StringIO, so make a new one for reading.
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stream = StringIO.StringIO(processed.getvalue())
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def parse_counters(stream):
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for line_num, line in enumerate(stream):
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line = line.rstrip('\n')
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if not line or line.startswith('//'):
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# empty line or comment
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continue
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m = re.match(r'method ([A-Za-z0-9]+)\.([A-Za-z0-9]+)$', line)
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if m:
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interface_name, method_name = m.groups()
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yield { 'type': 'method',
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'interface_name': interface_name,
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'method_name': method_name }
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continue
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m = re.match(r'attribute ([A-Za-z0-9]+)\.([A-Za-z0-9]+)$', line)
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if m:
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interface_name, attribute_name = m.groups()
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yield { 'type': 'attribute',
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'interface_name': interface_name,
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'attribute_name': attribute_name }
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continue
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m = re.match(r'property ([a-z0-9-]+)$', line)
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if m:
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property_name = m.group(1)
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yield { 'type': 'property',
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'property_name': property_name }
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continue
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raise ValueError('error parsing %s at line %d' % (conf_filename, line_num))
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return parse_counters(stream)
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def generate_histograms(filename):
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# The mapping for use counters to telemetry histograms depends on the
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# ordering of items in the dictionary.
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items = collections.OrderedDict()
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for counter in read_conf(filename):
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def append_counter(name, desc):
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items[name] = { 'expires_in_version': 'never',
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'kind' : 'boolean',
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'description': desc }
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def append_counters(name, desc):
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append_counter('USE_COUNTER_%s_DOCUMENT' % name, 'Whether a document %s' % desc)
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append_counter('USE_COUNTER_%s_PAGE' % name, 'Whether a page %s' % desc)
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if counter['type'] == 'method':
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method = '%s.%s' % (counter['interface_name'], counter['method_name'])
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append_counters(method.replace('.', '_').upper(), 'called %s' % method)
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elif counter['type'] == 'attribute':
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attr = '%s.%s' % (counter['interface_name'], counter['attribute_name'])
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append_counters(attr.replace('.', '_').upper(), 'got or set %s' % attr)
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elif counter['type'] == 'property':
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prop = counter['property_name']
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append_counters('PROPERTY_%s' % prop.replace('-', '_').upper(), "used the '%s' property" % prop)
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return items
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