forked from mirrors/gecko-dev
330c88c93a
MozReview-Commit-ID: 6publ0XDq3G --HG-- extra : rebase_source : 2f03065fa6d130c1d361fb4e1e7a6ef0641d6084
66 lines
2.2 KiB
Python
66 lines
2.2 KiB
Python
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#!/usr/bin/python
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import json
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import re
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import subprocess
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import sys
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def count_ctors(filename):
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proc = subprocess.Popen(
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['readelf', '-W', '-S', filename], stdout=subprocess.PIPE)
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# Some versions of ld produce both .init_array and .ctors. So we have
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# to check for both.
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n_init_array_ctors = 0
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have_init_array = False
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n_ctors_ctors = 0
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have_ctors = False
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for line in proc.stdout:
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f = line.split()
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if len(f) != 11:
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continue
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# Don't try to int()-parse the header line for the section summaries.
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if not re.match("\\[\\d+\\]", f[0]):
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continue
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section_name, contents, size, align = f[1], f[2], int(f[5], 16), int(f[10])
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if section_name == ".ctors" and contents == "PROGBITS":
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have_ctors = True
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# Subtract 2 for the uintptr_t(-1) header and the null terminator.
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n_ctors_ctors = size / align - 2
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if section_name == ".init_array" and contents == "INIT_ARRAY":
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have_init_array = True
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n_init_array_ctors = size / align
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if have_init_array:
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# Even if we have .ctors, we shouldn't have any constructors in .ctors.
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# Complain if .ctors does not look how we expect it to.
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if have_ctors and n_ctors_ctors != 0:
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print >>sys.stderr, "Unexpected .ctors contents for", filename
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sys.exit(1)
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return n_init_array_ctors
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if have_ctors:
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return n_ctors_ctors
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# We didn't find anything; somebody switched initialization mechanisms on
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# us, or the binary is completely busted. Complain either way.
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print >>sys.stderr, "Couldn't find .init_array or .ctors in", filename
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sys.exit(1)
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if __name__ == '__main__':
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for f in sys.argv[1:]:
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perfherder_data = {
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"framework": {"name": "build_metrics"},
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"suites": [{
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"name": "compiler_metrics",
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"subtests": [{
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"name": "num_static_constructors",
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"value": count_ctors(f),
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"alertChangeType": "absolute",
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"alertThreshold": 3
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}]}
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]
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}
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print "PERFHERDER_DATA: %s" % json.dumps(perfherder_data)
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