libreoffice/comphelper/source/misc/traceevent.cxx

/* -*- 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 <iostream>
#include <string_view>

#include <comphelper/profilezone.hxx>
#include <comphelper/sequence.hxx>
#include <comphelper/traceevent.hxx>

#include <osl/time.h>
#include <osl/thread.h>

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
int ProfileZone::s_nNesting = 0;

namespace
{
std::vector<OUString> g_aRecording; // recorded data
::osl::Mutex g_aMutex;
}

void TraceEvent::addRecording(const OUString& sObject)
{
    ::osl::MutexGuard aGuard(g_aMutex);

    g_aRecording.emplace_back(sObject);
}

void TraceEvent::addInstantEvent(const char* sName)
{
    TimeValue aSystemTime;
    osl_getSystemTime(&aSystemTime);
    long long nNow
        = static_cast<long long>(aSystemTime.Seconds) * 1000000 + aSystemTime.Nanosec / 1000;

    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\","
                   "\"ts\":"
                 + OUString::number(nNow)
                 + ","
                   "\"pid\":"
                 + OUString::number(nPid)
                 + ","
                   "\"tid\":"
                 + OUString::number(osl_getThreadIdentifier(nullptr)) + "},");
}

void TraceEvent::startRecording()
{
    ::osl::MutexGuard aGuard(g_aMutex);
    s_bRecording = true;
}

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

css::uno::Sequence<OUString> TraceEvent::getRecordingAndClear()
{
    bool bRecording;
    std::vector<OUString> aRecording;
    {
        ::osl::MutexGuard aGuard(g_aMutex);
        bRecording = s_bRecording;
        stopRecording();
        aRecording.swap(g_aRecording);
    }
    // reset start time and nesting level
    if (bRecording)
        startRecording();
    return ::comphelper::containerToSequence(aRecording);
}

void ProfileZone::addRecording()
{
    assert(s_bRecording);

    TimeValue aSystemTime;
    osl_getSystemTime(&aSystemTime);
    long long nNow
        = static_cast<long long>(aSystemTime.Seconds) * 1000000 + aSystemTime.Nanosec / 1000;

    // 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)
                             + ","
                               "\"pid\":"
                             + OUString::number(m_nPid)
                             + ","
                               "\"tid\":"
                             + OUString::number(osl_getThreadIdentifier(nullptr)) + "},");
}

void ProfileZone::stopConsole()
{
    sal_uInt32 nEndTime = osl_getGlobalTimer();
    std::cerr << "comphelper::ProfileZone: " << m_sName << " finished in "
              << nEndTime - m_nCreateTime << " ms" << std::endl;
}

} // namespace comphelper

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