/*
 * Copyright (c) 2019 Arm Limited
 * All rights reserved
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * 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: Andreas Sandberg
 */

#include "base/stats/group.hh"

#include <cassert>

#include "base/stats/info.hh"
#include "base/trace.hh"
#include "debug/Stats.hh"
#include "sim/sim_object.hh"

namespace Stats {

Group::Group(Group *parent, const char *name)
    : mergedParent(name ? nullptr : parent)
{
    if (parent && name) {
        parent->addStatGroup(name, this);
    } else if (parent && !name) {
        parent->mergeStatGroup(this);
    }
}

Group::~Group()
{
}

void
Group::regStats()
{
    for (auto &g : mergedStatGroups)
        g->regStats();

    for (auto &g : statGroups) {
        if (DTRACE(Stats)) {
            const SimObject *so = dynamic_cast<const SimObject *>(this);
            DPRINTF(Stats, "%s: regStats in group %s\n",
                    so ? so->name() : "?",
                    g.first);
        }
        g.second->regStats();
    }
}

void
Group::resetStats()
{
    for (auto &s : stats)
        s->reset();

    for (auto &g : mergedStatGroups)
        g->resetStats();

    for (auto &g : statGroups)
        g.second->resetStats();
}

void
Group::addStat(Stats::Info *info)
{
    stats.push_back(info);
    if (mergedParent)
        mergedParent->addStat(info);
}

void
Group::addStatGroup(const char *name, Group *block)
{
    assert(statGroups.find(name) == statGroups.end());

    statGroups[name] = block;
}

void
Group::mergeStatGroup(Group *block)
{
    mergedStatGroups.push_back(block);
}

const std::map<std::string, Group *> &
Group::getStatGroups() const
{
    return statGroups;
}

const std::vector<Info *> &
Group::getStats() const
{
    return stats;
}

} // namespace Stats