# Copyright (c) 2007 The Regents of The University of Michigan
# Copyright (c) 2010 The Hewlett-Packard Development Company
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Nathan Binkert

from m5 import internal
from m5.internal.stats import schedStatEvent as schedEvent
from m5.objects import Root
from m5.util import attrdict

def initText(filename, desc=True):
    internal.stats.initText(filename, desc)

def initMySQL(host, database, user='', passwd='', project='test', name='test',
              sample='0'):
    if not user:
        import getpass
        user = getpass.getuser()

    internal.stats.initMySQL(host, database, user, passwd, project, name,
                             sample)

def initSimStats():
    internal.stats.initSimStats()

names = []
stats_dict = {}
stats_list = []
raw_stats_list = []
def enable():
    '''Enable the statistics package.  Before the statistics package is
    enabled, all statistics must be created and initialized and once
    the package is enabled, no more statistics can be created.'''
    __dynamic_cast = []
    for k, v in internal.stats.__dict__.iteritems():
        if k.startswith('dynamic_'):
            __dynamic_cast.append(v)

    for stat in internal.stats.statsList():
        for cast in __dynamic_cast:
            val = cast(stat)
            if val is not None:
                stats_list.append(val)
                raw_stats_list.append(val)
                break
        else:
            fatal("unknown stat type %s", stat)

    def less(stat1, stat2):
        v1 = stat1.name.split('.')
        v2 = stat2.name.split('.')
        return v1 < v2

    stats_list.sort(less)
    for stat in stats_list:
        stats_dict[stat.name] = stat

    internal.stats.enable()

def dump():
    # Currently prepare happens in the dump, but we should maybe move
    # that out.

    #internal.stats.prepare()
    internal.stats.dump()

def reset():
    # call reset stats on all SimObjects
    root = Root.getInstance()
    if root:
        for obj in root.descendants(): obj.resetStats()

    # call any other registered stats reset callbacks
    internal.stats.reset()

flags = attrdict({
    'none'    : 0x0000,
    'init'    : 0x0001,
    'display' : 0x0002,
    'total'   : 0x0010,
    'pdf'     : 0x0020,
    'cdf'     : 0x0040,
    'dist'    : 0x0080,
    'nozero'  : 0x0100,
    'nonan'   : 0x0200,
})