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//
// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// debug.cpp: Debugging utilities.
#include "common/debug.h"
#include <stdarg.h>
#include <cstdio>
#include <fstream>
#include <iostream>
#include <vector>
#include "common/angleutils.h"
#include "common/platform.h"
#include "common/Optional.h"
namespace gl
{
namespace
{
class FormattedString final : angle::NonCopyable
{
public:
FormattedString(const char *format, va_list vararg) : mFormat(format)
{
va_copy(mVarArg, vararg);
}
const char *c_str() { return str().c_str(); }
const std::string &str()
{
if (!mMessage.valid())
{
mMessage = FormatString(mFormat, mVarArg);
}
return mMessage.value();
}
size_t length()
{
c_str();
return mMessage.value().length();
}
private:
const char *mFormat;
va_list mVarArg;
Optional<std::string> mMessage;
};
enum DebugTraceOutputType
{
DebugTraceOutputTypeNone,
DebugTraceOutputTypeSetMarker,
DebugTraceOutputTypeBeginEvent
};
DebugAnnotator *g_debugAnnotator = nullptr;
void output(bool traceInDebugOnly, MessageType messageType, DebugTraceOutputType outputType,
const char *format, va_list vararg)
{
if (DebugAnnotationsActive())
{
static std::vector<char> buffer(512);
size_t len = FormatStringIntoVector(format, vararg, buffer);
std::wstring formattedWideMessage(buffer.begin(), buffer.begin() + len);
ASSERT(g_debugAnnotator != nullptr);
switch (outputType)
{
case DebugTraceOutputTypeNone:
break;
case DebugTraceOutputTypeBeginEvent:
g_debugAnnotator->beginEvent(formattedWideMessage.c_str());
break;
case DebugTraceOutputTypeSetMarker:
g_debugAnnotator->setMarker(formattedWideMessage.c_str());
break;
}
}
FormattedString formattedMessage(format, vararg);
if (messageType == MESSAGE_ERR)
{
std::cerr << formattedMessage.c_str();
#if !defined(NDEBUG) && defined(_MSC_VER)
OutputDebugStringA(formattedMessage.c_str());
#endif // !defined(NDEBUG) && defined(_MSC_VER)
}
#if defined(ANGLE_ENABLE_DEBUG_TRACE)
#if defined(NDEBUG)
if (traceInDebugOnly)
{
return;
}
#endif // NDEBUG
static std::ofstream file(TRACE_OUTPUT_FILE, std::ofstream::app);
if (file)
{
file.write(formattedMessage.c_str(), formattedMessage.length());
file.flush();
}
#if defined(ANGLE_ENABLE_DEBUG_TRACE_TO_DEBUGGER)
OutputDebugStringA(formattedMessage.c_str());
#endif // ANGLE_ENABLE_DEBUG_TRACE_TO_DEBUGGER
#endif // ANGLE_ENABLE_DEBUG_TRACE
}
} // namespace
bool DebugAnnotationsActive()
{
#if defined(ANGLE_ENABLE_DEBUG_ANNOTATIONS)
return g_debugAnnotator != nullptr && g_debugAnnotator->getStatus();
#else
return false;
#endif
}
void InitializeDebugAnnotations(DebugAnnotator *debugAnnotator)
{
UninitializeDebugAnnotations();
g_debugAnnotator = debugAnnotator;
}
void UninitializeDebugAnnotations()
{
// Pointer is not managed.
g_debugAnnotator = nullptr;
}
void trace(bool traceInDebugOnly, MessageType messageType, const char *format, ...)
{
va_list vararg;
va_start(vararg, format);
output(traceInDebugOnly, messageType, DebugTraceOutputTypeSetMarker, format, vararg);
va_end(vararg);
}
ScopedPerfEventHelper::ScopedPerfEventHelper(const char* format, ...)
{
#if !defined(ANGLE_ENABLE_DEBUG_TRACE)
if (!DebugAnnotationsActive())
{
return;
}
#endif // !ANGLE_ENABLE_DEBUG_TRACE
va_list vararg;
va_start(vararg, format);
output(true, MESSAGE_EVENT, DebugTraceOutputTypeBeginEvent, format, vararg);
va_end(vararg);
}
ScopedPerfEventHelper::~ScopedPerfEventHelper()
{
if (DebugAnnotationsActive())
{
g_debugAnnotator->endEvent();
}
}
std::ostream &DummyStream()
{
return std::cout;
}
} // namespace gl
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