#!/usr/bin/env python

#

# Copyright (c) 2008 Google, Inc.

# Contributed by Arun Sharma <arun.sharma@google.com>

# 

# Permission is hereby granted, free of charge, to any person obtaining a

# copy of this software and associated documentation files (the "Software"),

# to deal in the Software without restriction, including without limitation

# the rights to use, copy, modify, merge, publish, distribute, sublicense,

# and/or sell copies of the Software, and to permit persons to whom the

# Software is furnished to do so, subject to the following conditions:

# 

# The above copyright notice and this permission notice shall be included

# in all copies or substantial portions of the Software.

# 

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR

# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

# OTHER DEALINGS IN THE SOFTWARE.

# 

import os

from perfmon import *

def public_members(self):

    s = "{ "

    for k, v in self.__dict__.iteritems():

      if not k[0] == '_':

        s += "%s : %s, " % (k, v)

    s += " }"

    return s

class System:

  def __init__(self):

    self.ncpus = os.sysconf('SC_NPROCESSORS_ONLN')

    self.pmu = PMU()

  def __repr__(self):

    return public_members(self)

class Event:

  def __init__(self):

    pass

  def __repr__(self):

    return '\n' + public_members(self)

class EventMask:

  def __init__(self):

    pass

  def __repr__(self):

    return '\n\t' + public_members(self)

class PMU:

  def __init__(self):

    pfm_initialize()

    self.type = pfm_py_get_pmu_type()

    self.name = pfm_get_pmu_name(PFMON_MAX_EVTNAME_LEN)[1]

    self.width = pfm_py_get_hw_counter_width()

    # What does the PMU support?

    self.__implemented_pmcs = pfmlib_regmask_t()

    self.__implemented_pmds = pfmlib_regmask_t()

    self.__implemented_counters = pfmlib_regmask_t()

    pfm_get_impl_pmcs(self.__implemented_pmcs)

    pfm_get_impl_pmds(self.__implemented_pmds)

    pfm_get_impl_counters(self.__implemented_counters)

    self.implemented_pmcs = self.__implemented_pmcs.weight()

    self.implemented_pmds = self.__implemented_pmds.weight()

    self.implemented_counters = self.__implemented_counters.weight()

    self.__events = None

  def __parse_events(self):

    nevents = pfm_py_get_num_events()

    self.__events = []

    for idx in range(0, nevents):

      e = Event()

      e.name = pfm_py_get_event_name(idx)

      e.code = pfm_py_get_event_code(idx)

      e.__counters = pfmlib_regmask_t()

      pfm_get_event_counters(idx, e.__counters)

      # Now the event masks

      e.masks = []

      nmasks = pfm_py_get_num_event_masks(idx)

      for mask_idx in range(0, nmasks):

        em = EventMask()

        em.name = pfm_py_get_event_mask_name(idx, mask_idx)

        em.code = pfm_py_get_event_mask_code(idx, mask_idx)

        em.desc = pfm_py_get_event_mask_description(idx, mask_idx)

        e.masks.append(em)

      self.__events.append(e)

  def events(self):

    if not self.__events:

      self.__parse_events()

    return self.__events

  def __repr__(self):

    return public_members(self)

if __name__ == '__main__':

  from perfmon import *

  s = System()

  print s

  print s.pmu.events()