view tests/sitecustomize.py @ 24821:57f1dbc99631 stable

afterlock: add the callback to the top level lock (issue4608)

If 'wlock' is taken, we should add 'afterlock' callback to the 'wlock' instead.
Otherwise, running post transaction hook after 'lock' is release but 'wlock' is
still taken lead to a deadlock (eg: 'hg update' during a hook).

This situation is much more common since: 5dc5cd7abbf5

  push: acquire local 'wlock' if "pushback" is expected (BC) (issue4596)

import os

if os.environ.get('COVERAGE_PROCESS_START'):
    try:
        import coverage
        import random

        # uuid is better, but not available in Python 2.4.
        covpath = os.path.join(os.environ['COVERAGE_DIR'],
                               'cov.%s' % random.randrange(0, 1000000000000))
        cov = coverage.coverage(data_file=covpath, auto_data=True)
        cov._warn_no_data = False
        cov._warn_unimported_source = False
        cov.start()
    except ImportError:
        pass