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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* 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/.
*/
#ifndef INCLUDED_COMPHELPER_TRACEEVENT_HXX
#define INCLUDED_COMPHELPER_TRACEEVENT_HXX
#include <sal/config.h>
#include <atomic>
#include <map>
#include <memory>
#include <utility>
#include <vector>
#include <osl/process.h>
#include <osl/thread.h>
#include <osl/time.h>
#include <com/sun/star/uno/Sequence.h>
#include <comphelper/comphelperdllapi.h>
#include <rtl/ustrbuf.hxx>
#include <rtl/ustring.hxx>
// implementation of XToolkitExperimental profiling API
namespace comphelper
{
class COMPHELPER_DLLPUBLIC TraceEvent
{
private:
static int getPid()
{
oslProcessInfo aProcessInfo;
aProcessInfo.Size = sizeof(oslProcessInfo);
if (osl_getProcessInfo(nullptr, osl_Process_IDENTIFIER, &aProcessInfo)
== osl_Process_E_None)
return aProcessInfo.Ident;
return -1;
}
static std::size_t s_nBufferSize;
static void (*s_pBufferFullCallback)();
protected:
static std::atomic<bool> s_bRecording; // true during recording
static void addRecording(const OUString& sObject);
static long long getNow()
{
TimeValue systemTime;
osl_getSystemTime(&systemTime);
return static_cast<long long>(systemTime.Seconds) * 1000000 + systemTime.Nanosec / 1000;
}
static OUString createArgsString(const std::map<OUString, OUString>& args)
{
if (args.size() == 0)
return "";
OUStringBuffer sResult;
sResult.append(",\"args\":{");
bool first = true;
for (auto& i : args)
{
if (!first)
sResult.append(',');
sResult.append('"');
sResult.append(i.first);
sResult.append("\":\"");
sResult.append(i.second);
sResult.append('"');
first = false;
}
sResult.append('}');
return sResult.makeStringAndClear();
}
const int m_nPid;
const OUString m_sArgs;
TraceEvent(OUString sArgs)
: m_nPid(s_bRecording ? getPid() : 1)
, m_sArgs(std::move(sArgs))
{
}
TraceEvent(const std::map<OUString, OUString>& aArgs)
: TraceEvent(createArgsString(aArgs))
{
}
public:
static void addInstantEvent(const char* sName, const std::map<OUString, OUString>& args
= std::map<OUString, OUString>());
static void startRecording();
static void stopRecording();
static void setBufferSizeAndCallback(std::size_t bufferSize, void (*bufferFullCallback)());
static std::vector<OUString> getEventVectorAndClear();
static css::uno::Sequence<OUString> getRecordingAndClear();
};
class COMPHELPER_DLLPUBLIC NamedEvent : public TraceEvent
{
protected:
const char* m_sName;
NamedEvent(const char* sName, const OUString& sArgs)
: TraceEvent(sArgs)
, m_sName(sName ? sName : "(null)")
{
}
NamedEvent(const char* sName, const std::map<OUString, OUString>& aArgs)
: TraceEvent(aArgs)
, m_sName(sName ? sName : "(null)")
{
}
};
// An AsyncEvent generates an 'S' (start) event when constructed and a 'F' (finish) event when it
// is destructed.
// The Trace Event specification claims that these event types are deprecated and replaces by
// nestable 'b' (begin) and 'e' (end) events, but Chrome does not seem to support those.
// To generate a pair of 'S' and 'F' events, create an AsyncEvent object using the AsyncEvent(const
// char* sName) constructor when you want the 'S' event to be generated, and destroy it when you
// want the corresponding 'F' event to be generated.
class COMPHELPER_DLLPUBLIC AsyncEvent : public NamedEvent,
public std::enable_shared_from_this<AsyncEvent>
{
static int s_nIdCounter;
int m_nId;
bool m_bBeginRecorded;
AsyncEvent(const char* sName, int nId, const std::map<OUString, OUString>& args)
: NamedEvent(sName, args)
, m_nId(nId)
, m_bBeginRecorded(false)
{
if (!s_bRecording)
return;
long long nNow = getNow();
// Generate a "Start" (type S) event
TraceEvent::addRecording("{"
"\"name\":\""
+ OUString(m_sName, strlen(m_sName), RTL_TEXTENCODING_UTF8)
+ "\","
"\"ph\":\"S\""
","
"\"id\":"
+ OUString::number(m_nId) + m_sArgs
+ ","
"\"ts\":"
+ OUString::number(nNow)
+ ","
"\"pid\":"
+ OUString::number(m_nPid)
+ ","
"\"tid\":"
+ OUString::number(osl_getThreadIdentifier(nullptr)) + "},");
m_bBeginRecorded = true;
}
void generateEnd()
{
if (!m_bBeginRecorded)
return;
m_bBeginRecorded = false;
long long nNow = getNow();
// Generate a "Finish" (type F) event
TraceEvent::addRecording("{"
"\"name\":\""
+ OUString(m_sName, strlen(m_sName), RTL_TEXTENCODING_UTF8)
+ "\","
"\"ph\":\"F\""
","
"\"id\":"
+ OUString::number(m_nId) + m_sArgs
+ ","
"\"ts\":"
+ OUString::number(nNow)
+ ","
"\"pid\":"
+ OUString::number(m_nPid)
+ ","
"\"tid\":"
+ OUString::number(osl_getThreadIdentifier(nullptr)) + "},");
}
public:
AsyncEvent(const char* sName,
const std::map<OUString, OUString>& args = std::map<OUString, OUString>())
: AsyncEvent(sName, s_nIdCounter++, args)
{
}
~AsyncEvent() { generateEnd(); }
void finish() { generateEnd(); }
};
} // namespace comphelper
#endif // INCLUDED_COMPHELPER_TRACEEVENT_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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