/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 */

#include <sal/config.h>

#include <atomic>

#include <mutex>

#include <comphelper/profilezone.hxx>

#include <comphelper/sequence.hxx>

#include <comphelper/traceevent.hxx>

namespace comphelper

{

#ifdef DBG_UTIL

std::atomic<bool> TraceEvent::s_bRecording = (getenv("TRACE_EVENT_RECORDING") != nullptr);

#else

std::atomic<bool> TraceEvent::s_bRecording = false;

#endif

std::size_t TraceEvent::s_nBufferSize = 0;

void (*TraceEvent::s_pBufferFullCallback)() = nullptr;

int AsyncEvent::s_nIdCounter = 0;

static thread_local int nProfileZoneNesting = 0; // Level of Nested Profile Zones

namespace

{

std::vector<OUString> g_aRecording; // recorded data

std::mutex g_aMutex;

}

void TraceEvent::addRecording(const OUString& sObject)

{

    bool bEmitCallback;

    {

        std::lock_guard aGuard(g_aMutex);

        g_aRecording.emplace_back(sObject);

        bEmitCallback = s_nBufferSize > 0 && g_aRecording.size() >= s_nBufferSize;

    }

    if (bEmitCallback && s_pBufferFullCallback != nullptr)

        (*s_pBufferFullCallback)();

}

void TraceEvent::addInstantEvent(const char* sName, const std::map<OUString, OUString>& args)

{

    long long nNow = getNow();

    int nPid = 0;

    oslProcessInfo aProcessInfo;

    aProcessInfo.Size = sizeof(oslProcessInfo);

    if (osl_getProcessInfo(nullptr, osl_Process_IDENTIFIER, &aProcessInfo) == osl_Process_E_None)

        nPid = aProcessInfo.Ident;

    addRecording("{"

                 "\"name:\""

                 + OUString(sName, strlen(sName), RTL_TEXTENCODING_UTF8)

                 + "\","

                   "\"ph\":\"i\""

                 + createArgsString(args) + ",\"ts\":" + OUString::number(nNow)

                 + ","

                   "\"pid\":"

                 + OUString::number(nPid)

                 + ","

                   "\"tid\":"

                 + OUString::number(osl_getThreadIdentifier(nullptr)) + "},");

}

void TraceEvent::startRecording()

{

    std::lock_guard aGuard(g_aMutex);

    s_bRecording = true;

}

void TraceEvent::stopRecording() { s_bRecording = false; }

std::vector<OUString> TraceEvent::getEventVectorAndClear()

{

    bool bRecording;

    std::vector<OUString> aRecording;

    {

        std::lock_guard aGuard(g_aMutex);

        bRecording = s_bRecording;

        stopRecording();

        aRecording.swap(g_aRecording);

    }

    // reset start time and nesting level

    if (bRecording)

        startRecording();

    return aRecording;

}

css::uno::Sequence<OUString> TraceEvent::getRecordingAndClear()

{

    return comphelper::containerToSequence(getEventVectorAndClear());

}

void ProfileZone::addRecording()

{

    assert(s_bRecording);

    long long nNow = getNow();

    // Generate a single "Complete Event" (type X)

    TraceEvent::addRecording("{"

                             "\"name\":\""

                             + OUString(m_sName, strlen(m_sName), RTL_TEXTENCODING_UTF8)

                             + "\","

                               "\"ph\":\"X\","

                               "\"ts\":"

                             + OUString::number(m_nCreateTime)

                             + ","

                               "\"dur\":"

                             + OUString::number(nNow - m_nCreateTime) + m_sArgs

                             + ","

                               "\"pid\":"

                             + OUString::number(m_nPid)

                             + ","

                               "\"tid\":"

                             + OUString::number(osl_getThreadIdentifier(nullptr)) + "},");

}

int ProfileZone::getNestingLevel() { return nProfileZoneNesting; }

void ProfileZone::setNestingLevel(int nNestingLevel) { nProfileZoneNesting = nNestingLevel; }

} // namespace comphelper

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