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How to use read_from_smaps method in avocado

Best Python code snippet using avocado_python

utils_memory.py

Source:utils_memory.py

...59    return read_from_meminfo('HugePages_Rsvd')60def get_num_anon_huge_pages(pid=0):61    if int(pid) > 1:62        # get AnonHugePages usage of specified process63        return read_from_smaps(pid, 'AnonHugePages')64    else:65        # invalid pid, so return AnonHugePages of the host66        return read_from_meminfo('AnonHugePages')67def get_transparent_hugepage():68    UPSTREAM_THP_PATH = "/sys/kernel/mm/transparent_hugepage"69    RH_THP_PATH = "/sys/kernel/mm/redhat_transparent_hugepage"70    if os.path.isdir(UPSTREAM_THP_PATH):71        thp_path = UPSTREAM_THP_PATH72    elif os.path.isdir(RH_THP_PATH):73        thp_path = RH_THP_PATH74    else:75        raise exceptions.TestFail("transparent hugepage Not supported")76    out = process.system_output('cat %s/enabled' % thp_path)77    if out[0] == "[always]":78        return 'always'79    elif out[1] == "[madvise]":80        return 'madvise'81    else:82        return 'never'83def set_num_huge_pages(num):84    process.system('/sbin/sysctl vm.nr_hugepages=%d' % num)85def set_transparent_hugepage(sflag):86    """87    sflag only can be set always, madvise or never.88    """89    flags = ['always', 'madvise', 'never']90    if sflag not in flags:91        raise exceptions.TestFail("specify wrong parameter")92    UPSTREAM_THP_PATH = "/sys/kernel/mm/transparent_hugepage"93    RH_THP_PATH = "/sys/kernel/mm/redhat_transparent_hugepage"94    if os.path.isdir(UPSTREAM_THP_PATH):95        thp_path = UPSTREAM_THP_PATH96    elif os.path.isdir(RH_THP_PATH):97        thp_path = RH_THP_PATH98    else:99        raise exceptions.TestFail("transparent hugepage Not supported")100    ret = os.system("echo %s > %s/enabled" % (sflag, thp_path))101    if ret != 0:102        raise exceptions.TestFail("setting transparent_hugepage failed")103def drop_caches():104    """Writes back all dirty pages to disk and clears all the caches."""105    process.run("sync", verbose=False)106    # We ignore failures here as this will fail on 2.6.11 kernels.107    process.run("echo 3 > /proc/sys/vm/drop_caches", ignore_status=True,108                verbose=False)109def read_from_vmstat(key):110    """111    Get specific item value from vmstat112    :param key: The item you want to check from vmstat113    :type key: String114    :return: The value of the item115    :rtype: int116    """117    vmstat = open("/proc/vmstat")118    vmstat_info = vmstat.read()119    vmstat.close()120    return int(re.findall("%s\s+(\d+)" % key, vmstat_info)[0])121def read_from_smaps(pid, key):122    """123    Get specific item value from the smaps of a process include all sections.124    :param pid: Process id125    :type pid: String126    :param key: The item you want to check from smaps127    :type key: String128    :return: The value of the item in kb129    :rtype: int130    """131    smaps = open("/proc/%s/smaps" % pid)132    smaps_info = smaps.read()133    smaps.close()134    memory_size = 0135    for each_number in re.findall("%s:\s+(\d+)" % key, smaps_info):...

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