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v0.8.1
Revision 7889944b83cf04cefb45cd658644298218eac5db authored by R David Murray on 19 March 2013, 17:56:01 UTC, committed by R David Murray on 19 March 2013, 17:56:01 UTC 
Merge: #17443: Fix buffering in IMAP4_stream.
 
In Python2 Popen uses *FILE objects, which wind up buffering even though
subprocess defaults to no buffering.  In Python3, subprocess streams really
are unbuffered by default, but the imaplib code assumes read is buffered.  This
patch uses the default buffer size from the io module to get buffered streams
from Popen.

Much debugging work and patch by Diane Trout.

The imap protocol is too complicated to write a test for this simple
change with our current level of test infrastructure.
2 parent s e185341 + fcb6d6a
Raw File
clockres.py 
#!/usr/bin/env python

""" clockres - calculates the resolution in seconds of a given timer.

    Copyright (c) 2006, Marc-Andre Lemburg (mal@egenix.com). See the
    documentation for further information on copyrights, or contact
    the author. All Rights Reserved.

"""
import time

TEST_TIME = 1.0

def clockres(timer):
    d = {}
    wallclock = time.time
    start = wallclock()
    stop = wallclock() + TEST_TIME
    spin_loops = range(1000)
    while 1:
        now = wallclock()
        if now >= stop:
            break
        for i in spin_loops:
            d[timer()] = 1
    values = sorted(d.keys())
    min_diff = TEST_TIME
    for i in range(len(values) - 1):
        diff = values[i+1] - values[i]
        if diff < min_diff:
            min_diff = diff
    return min_diff

if __name__ == '__main__':
    print('Clock resolution of various timer implementations:')
    print('time.clock:           %10.3fus' % (clockres(time.clock) * 1e6))
    print('time.time:            %10.3fus' % (clockres(time.time) * 1e6))
    try:
        import systimes
        print('systimes.processtime: %10.3fus' % (clockres(systimes.processtime) * 1e6))
    except ImportError:
        pass
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