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gecko-dev/gfx/2d/Logging.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 MOZILLA_GFX_LOGGING_H_
#define MOZILLA_GFX_LOGGING_H_
#include <string>
#include <sstream>
#include <stdio.h>
#include <vector>
#ifdef MOZ_LOGGING
# include "mozilla/Logging.h"
#endif
#include "mozilla/Tuple.h"
#if defined(MOZ_WIDGET_ANDROID)
# include "nsDebug.h"
#endif
#include "2D.h"
#include "Point.h"
#include "BaseRect.h"
#include "Matrix.h"
#include "LoggingConstants.h"
#if defined(MOZ_LOGGING)
extern GFX2D_API mozilla::LogModule* GetGFX2DLog();
#endif
namespace mozilla {
namespace gfx {
#if defined(MOZ_LOGGING)
inline mozilla::LogLevel PRLogLevelForLevel(int aLevel) {
switch (aLevel) {
case LOG_CRITICAL:
return LogLevel::Error;
case LOG_WARNING:
return LogLevel::Warning;
case LOG_DEBUG:
return LogLevel::Debug;
case LOG_DEBUG_PRLOG:
return LogLevel::Debug;
case LOG_EVERYTHING:
return LogLevel::Error;
}
return LogLevel::Debug;
}
#endif
class LoggingPrefs {
public:
// Used to choose the level of logging we get. The higher the number,
// the more logging we get. Value of zero will give you no logging,
// 1 just errors, 2 adds warnings and 3 or 4 add debug logging.
// In addition to setting the value to 4, you will need to set the
// environment variable MOZ_LOG to gfx:4. See mozilla/Logging.h for details.
static int32_t sGfxLogLevel;
};
/// Graphics logging is available in both debug and release builds and is
/// controlled with a gfx.logging.level preference. If not set, the default
/// for the preference is 5 in the debug builds, 1 in the release builds.
///
/// gfxDebug only works in the debug builds, and is used for information
/// level messages, helping with debugging. In addition to only working
/// in the debug builds, the value of the above preference of 3 or higher
/// is required.
///
/// gfxWarning messages are available in both debug and release builds,
/// on by default in the debug builds, and off by default in the release builds.
/// Setting the preference gfx.logging.level to a value of 2 or higher will
/// show the warnings.
///
/// gfxCriticalError is available in debug and release builds by default.
/// It is only unavailable if gfx.logging.level is set to 0 (or less.)
/// It outputs the message to stderr or equivalent, like gfxWarning.
/// In the event of a crash, the crash report is annotated with first and
/// the last few of these errors, under the key GraphicsCriticalError.
/// The total number of errors stored in the crash report is controlled
/// by preference gfx.logging.crash.length.
///
/// On platforms that support MOZ_LOGGING, the story is slightly more involved.
/// In that case, unless gfx.logging.level is set to 4 or higher, the output
/// is further controlled by the "gfx2d" logging module. However, in the case
/// where such module would disable the output, in all but gfxDebug cases,
/// we will still send a printf.
// The range is due to the values set in Histograms.json
enum class LogReason : int {
MustBeMoreThanThis = -1,
// Start. Do not insert, always add at end. If you remove items,
// make sure the other items retain their values.
D3D11InvalidCallDeviceRemoved = 0,
D3D11InvalidCall,
D3DLockTimeout,
D3D10FinalizeFrame,
D3D11FinalizeFrame,
D3D10SyncLock,
D3D11SyncLock,
D2D1NoWriteMap,
JobStatusError,
FilterInputError,
FilterInputData, // 10
FilterInputRect,
FilterInputSet,
FilterInputFormat,
FilterNodeD2D1Target,
FilterNodeD2D1Backend,
SourceSurfaceIncompatible,
GlyphAllocFailedCairo,
GlyphAllocFailedCG,
InvalidRect,
CannotDraw3D, // 20
IncompatibleBasicTexturedEffect,
InvalidFont,
PAllocTextureBackendMismatch,
GetFontFileDataFailed,
MessageChannelCloseFailure,
MessageChannelInvalidHandle,
TextureAliveAfterShutdown,
InvalidContext,
InvalidCommandList,
AsyncTransactionTimeout, // 30
TextureCreation,
InvalidCacheSurface,
AlphaWithBasicClient,
UnbalancedClipStack,
ProcessingError,
InvalidDrawTarget,
NativeFontResourceNotFound,
UnscaledFontNotFound,
ScaledFontNotFound,
InvalidLayerType,
// End
MustBeLessThanThis = 101,
};
struct BasicLogger {
// For efficiency, this method exists and copies the logic of the
// OutputMessage below. If making any changes here, also make it
// in the appropriate places in that method.
static bool ShouldOutputMessage(int aLevel) {
if (LoggingPrefs::sGfxLogLevel >= aLevel) {
#if defined(MOZ_WIDGET_ANDROID)
return true;
#else
# if defined(MOZ_LOGGING)
if (MOZ_LOG_TEST(GetGFX2DLog(), PRLogLevelForLevel(aLevel))) {
return true;
} else
# endif
if ((LoggingPrefs::sGfxLogLevel >= LOG_DEBUG_PRLOG) ||
(aLevel < LOG_DEBUG)) {
return true;
}
#endif
}
return false;
}
// Only for really critical errors.
static void CrashAction(LogReason aReason) {}
static void OutputMessage(const std::string& aString, int aLevel,
bool aNoNewline) {
// This behavior (the higher the preference, the more we log)
// is consistent with what prlog does in general. Note that if prlog
// is in the build, but disabled, we will printf if the preferences
// requires us to log something (see sGfxLogLevel for the special
// treatment of LOG_DEBUG and LOG_DEBUG_PRLOG)
//
// If making any logic changes to this method, you should probably
// make the corresponding change in the ShouldOutputMessage method
// above.
if (LoggingPrefs::sGfxLogLevel >= aLevel) {
#if defined(MOZ_WIDGET_ANDROID)
printf_stderr("%s%s", aString.c_str(), aNoNewline ? "" : "\n");
#else
# if defined(MOZ_LOGGING)
if (MOZ_LOG_TEST(GetGFX2DLog(), PRLogLevelForLevel(aLevel))) {
MOZ_LOG(GetGFX2DLog(), PRLogLevelForLevel(aLevel),
("%s%s", aString.c_str(), aNoNewline ? "" : "\n"));
} else
# endif
if ((LoggingPrefs::sGfxLogLevel >= LOG_DEBUG_PRLOG) ||
(aLevel < LOG_DEBUG)) {
printf("%s%s", aString.c_str(), aNoNewline ? "" : "\n");
}
#endif
}
}
};
struct CriticalLogger {
static void OutputMessage(const std::string& aString, int aLevel,
bool aNoNewline);
static void CrashAction(LogReason aReason);
};
// The int is the index of the Log call; if the number of logs exceeds some
// preset capacity we may not get all of them, so the indices help figure out
// which ones we did save. The double is expected to be the "TimeDuration",
// time in seconds since the process creation.
typedef mozilla::Tuple<int32_t, std::string, double> LoggingRecordEntry;
// Implement this interface and init the Factory with an instance to
// forward critical logs.
typedef std::vector<LoggingRecordEntry> LoggingRecord;
class LogForwarder {
public:
virtual ~LogForwarder() = default;
virtual void Log(const std::string& aString) = 0;
virtual void CrashAction(LogReason aReason) = 0;
virtual bool UpdateStringsVector(const std::string& aString) = 0;
// Provide a copy of the logs to the caller.
virtual LoggingRecord LoggingRecordCopy() = 0;
};
class NoLog {
public:
NoLog() {}
~NoLog() {}
// No-op
MOZ_IMPLICIT NoLog(const NoLog&) {}
template <typename T>
NoLog& operator<<(const T& aLogText) {
return *this;
}
};
enum class LogOptions : int {
NoNewline = 0x01,
AutoPrefix = 0x02,
AssertOnCall = 0x04,
CrashAction = 0x08,
};
template <typename T>
struct Hexa {
explicit Hexa(T aVal) : mVal(aVal) {}
T mVal;
};
template <typename T>
Hexa<T> hexa(T val) {
return Hexa<T>(val);
}
#ifdef WIN32
void LogWStr(const wchar_t* aStr, std::stringstream& aOut);
#endif
template <int L, typename Logger = BasicLogger>
class Log final {
public:
// The default is to have the prefix, have the new line, and for critical
// logs assert on each call.
static int DefaultOptions(bool aWithAssert = true) {
return (int(LogOptions::AutoPrefix) |
(aWithAssert ? int(LogOptions::AssertOnCall) : 0));
}
// Note that we're calling BasicLogger::ShouldOutputMessage, rather than
// Logger::ShouldOutputMessage. Since we currently don't have a different
// version of that method for different loggers, this is OK. Once we do,
// change BasicLogger::ShouldOutputMessage to Logger::ShouldOutputMessage.
explicit Log(int aOptions = Log::DefaultOptions(L == LOG_CRITICAL),
LogReason aReason = LogReason::MustBeMoreThanThis)
: mOptions(0), mLogIt(false) {
Init(aOptions, BasicLogger::ShouldOutputMessage(L), aReason);
}
~Log() { Flush(); }
void Flush() {
if (MOZ_LIKELY(!LogIt())) return;
std::string str = mMessage.str();
if (!str.empty()) {
WriteLog(str);
}
mMessage.str("");
}
Log& operator<<(char aChar) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aChar;
}
return *this;
}
Log& operator<<(const std::string& aLogText) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aLogText;
}
return *this;
}
Log& operator<<(const char aStr[]) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << static_cast<const char*>(aStr);
}
return *this;
}
#ifdef WIN32
Log& operator<<(const wchar_t aWStr[]) {
if (MOZ_UNLIKELY(LogIt())) {
LogWStr(aWStr, mMessage);
}
return *this;
}
#endif
Log& operator<<(bool aBool) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << (aBool ? "true" : "false");
}
return *this;
}
Log& operator<<(int aInt) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aInt;
}
return *this;
}
Log& operator<<(unsigned int aInt) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aInt;
}
return *this;
}
Log& operator<<(long aLong) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aLong;
}
return *this;
}
Log& operator<<(unsigned long aLong) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aLong;
}
return *this;
}
Log& operator<<(long long aLong) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aLong;
}
return *this;
}
Log& operator<<(unsigned long long aLong) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aLong;
}
return *this;
}
Log& operator<<(Float aFloat) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aFloat;
}
return *this;
}
Log& operator<<(double aDouble) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << aDouble;
}
return *this;
}
Log& operator<<(const Color& aColor) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Color(" << aColor.r << ", " << aColor.g << ", " << aColor.b
<< ", " << aColor.a << ")";
}
return *this;
}
template <typename T, typename Sub, typename Coord>
Log& operator<<(const BasePoint<T, Sub, Coord>& aPoint) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Point" << aPoint;
}
return *this;
}
template <typename T, typename Sub>
Log& operator<<(const BaseSize<T, Sub>& aSize) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Size(" << aSize.width << "," << aSize.height << ")";
}
return *this;
}
template <typename T, typename Sub, typename Point, typename SizeT,
typename Margin>
Log& operator<<(const BaseRect<T, Sub, Point, SizeT, Margin>& aRect) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Rect" << aRect;
}
return *this;
}
Log& operator<<(const Matrix& aMatrix) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Matrix(" << aMatrix._11 << " " << aMatrix._12 << " ; "
<< aMatrix._21 << " " << aMatrix._22 << " ; " << aMatrix._31
<< " " << aMatrix._32 << ")";
}
return *this;
}
template <typename T>
Log& operator<<(Hexa<T> aHex) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << std::showbase << std::hex << aHex.mVal << std::noshowbase
<< std::dec;
}
return *this;
}
Log& operator<<(const SourceSurface* aSurface) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "SourceSurface(" << (void*)(aSurface) << ")";
}
return *this;
}
Log& operator<<(const Path* aPath) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Path(" << (void*)(aPath) << ")";
}
return *this;
}
Log& operator<<(const Pattern* aPattern) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "Pattern(" << (void*)(aPattern) << ")";
}
return *this;
}
Log& operator<<(const ScaledFont* aFont) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "ScaledFont(" << (void*)(aFont) << ")";
}
return *this;
}
Log& operator<<(const FilterNode* aFilter) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "FilterNode(" << (void*)(aFilter) << ")";
}
return *this;
}
Log& operator<<(const DrawOptions& aOptions) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "DrawOptions(" << aOptions.mAlpha << ", ";
(*this) << aOptions.mCompositionOp;
mMessage << ", ";
(*this) << aOptions.mAntialiasMode;
mMessage << ")";
}
return *this;
}
Log& operator<<(const DrawSurfaceOptions& aOptions) {
if (MOZ_UNLIKELY(LogIt())) {
mMessage << "DrawSurfaceOptions(";
(*this) << aOptions.mSamplingFilter;
mMessage << ", ";
(*this) << aOptions.mSamplingBounds;
mMessage << ")";
}
return *this;
}
Log& operator<<(SamplingBounds aBounds) {
if (MOZ_UNLIKELY(LogIt())) {
switch (aBounds) {
case SamplingBounds::UNBOUNDED:
mMessage << "SamplingBounds::UNBOUNDED";
break;
case SamplingBounds::BOUNDED:
mMessage << "SamplingBounds::BOUNDED";
break;
default:
mMessage << "Invalid SamplingBounds (" << (int)aBounds << ")";
break;
}
}
return *this;
}
Log& operator<<(SamplingFilter aFilter) {
if (MOZ_UNLIKELY(LogIt())) {
switch (aFilter) {
case SamplingFilter::GOOD:
mMessage << "SamplingFilter::GOOD";
break;
case SamplingFilter::LINEAR:
mMessage << "SamplingFilter::LINEAR";
break;
case SamplingFilter::POINT:
mMessage << "SamplingFilter::POINT";
break;
default:
mMessage << "Invalid SamplingFilter (" << (int)aFilter << ")";
break;
}
}
return *this;
}
Log& operator<<(AntialiasMode aMode) {
if (MOZ_UNLIKELY(LogIt())) {
switch (aMode) {
case AntialiasMode::NONE:
mMessage << "AntialiasMode::NONE";
break;
case AntialiasMode::GRAY:
mMessage << "AntialiasMode::GRAY";
break;
case AntialiasMode::SUBPIXEL:
mMessage << "AntialiasMode::SUBPIXEL";
break;
case AntialiasMode::DEFAULT:
mMessage << "AntialiasMode::DEFAULT";
break;
default:
mMessage << "Invalid AntialiasMode (" << (int)aMode << ")";
break;
}
}
return *this;
}
Log& operator<<(CompositionOp aOp) {
if (MOZ_UNLIKELY(LogIt())) {
switch (aOp) {
case CompositionOp::OP_OVER:
mMessage << "CompositionOp::OP_OVER";
break;
case CompositionOp::OP_ADD:
mMessage << "CompositionOp::OP_ADD";
break;
case CompositionOp::OP_ATOP:
mMessage << "CompositionOp::OP_ATOP";
break;
case CompositionOp::OP_OUT:
mMessage << "CompositionOp::OP_OUT";
break;
case CompositionOp::OP_IN:
mMessage << "CompositionOp::OP_IN";
break;
case CompositionOp::OP_SOURCE:
mMessage << "CompositionOp::OP_SOURCE";
break;
case CompositionOp::OP_DEST_IN:
mMessage << "CompositionOp::OP_DEST_IN";
break;
case CompositionOp::OP_DEST_OUT:
mMessage << "CompositionOp::OP_DEST_OUT";
break;
case CompositionOp::OP_DEST_OVER:
mMessage << "CompositionOp::OP_DEST_OVER";
break;
case CompositionOp::OP_DEST_ATOP:
mMessage << "CompositionOp::OP_DEST_ATOP";
break;
case CompositionOp::OP_XOR:
mMessage << "CompositionOp::OP_XOR";
break;
case CompositionOp::OP_MULTIPLY:
mMessage << "CompositionOp::OP_MULTIPLY";
break;
case CompositionOp::OP_SCREEN:
mMessage << "CompositionOp::OP_SCREEN";
break;
case CompositionOp::OP_OVERLAY:
mMessage << "CompositionOp::OP_OVERLAY";
break;
case CompositionOp::OP_DARKEN:
mMessage << "CompositionOp::OP_DARKEN";
break;
case CompositionOp::OP_LIGHTEN:
mMessage << "CompositionOp::OP_LIGHTEN";
break;
case CompositionOp::OP_COLOR_DODGE:
mMessage << "CompositionOp::OP_COLOR_DODGE";
break;
case CompositionOp::OP_COLOR_BURN:
mMessage << "CompositionOp::OP_COLOR_BURN";
break;
case CompositionOp::OP_HARD_LIGHT:
mMessage << "CompositionOp::OP_HARD_LIGHT";
break;
case CompositionOp::OP_SOFT_LIGHT:
mMessage << "CompositionOp::OP_SOFT_LIGHT";
break;
case CompositionOp::OP_DIFFERENCE:
mMessage << "CompositionOp::OP_DIFFERENCE";
break;
case CompositionOp::OP_EXCLUSION:
mMessage << "CompositionOp::OP_EXCLUSION";
break;
case CompositionOp::OP_HUE:
mMessage << "CompositionOp::OP_HUE";
break;
case CompositionOp::OP_SATURATION:
mMessage << "CompositionOp::OP_SATURATION";
break;
case CompositionOp::OP_COLOR:
mMessage << "CompositionOp::OP_COLOR";
break;
case CompositionOp::OP_LUMINOSITY:
mMessage << "CompositionOp::OP_LUMINOSITY";
break;
case CompositionOp::OP_COUNT:
mMessage << "CompositionOp::OP_COUNT";
break;
default:
mMessage << "Invalid CompositionOp (" << (int)aOp << ")";
break;
}
}
return *this;
}
Log& operator<<(SurfaceFormat aFormat) {
if (MOZ_UNLIKELY(LogIt())) {
switch (aFormat) {
case SurfaceFormat::B8G8R8A8:
mMessage << "SurfaceFormat::B8G8R8A8";
break;
case SurfaceFormat::B8G8R8X8:
mMessage << "SurfaceFormat::B8G8R8X8";
break;
case SurfaceFormat::R8G8B8A8:
mMessage << "SurfaceFormat::R8G8B8A8";
break;
case SurfaceFormat::R8G8B8X8:
mMessage << "SurfaceFormat::R8G8B8X8";
break;
case SurfaceFormat::R5G6B5_UINT16:
mMessage << "SurfaceFormat::R5G6B5_UINT16";
break;
case SurfaceFormat::A8:
mMessage << "SurfaceFormat::A8";
break;
case SurfaceFormat::YUV:
mMessage << "SurfaceFormat::YUV";
break;
case SurfaceFormat::UNKNOWN:
mMessage << "SurfaceFormat::UNKNOWN";
break;
default:
mMessage << "Invalid SurfaceFormat (" << (int)aFormat << ")";
break;
}
}
return *this;
}
Log& operator<<(SurfaceType aType) {
if (MOZ_UNLIKELY(LogIt())) {
switch (aType) {
case SurfaceType::DATA:
mMessage << "SurfaceType::DATA";
break;
case SurfaceType::D2D1_BITMAP:
mMessage << "SurfaceType::D2D1_BITMAP";
break;
case SurfaceType::D2D1_DRAWTARGET:
mMessage << "SurfaceType::D2D1_DRAWTARGET";
break;
case SurfaceType::CAIRO:
mMessage << "SurfaceType::CAIRO";
break;
case SurfaceType::CAIRO_IMAGE:
mMessage << "SurfaceType::CAIRO_IMAGE";
break;
case SurfaceType::COREGRAPHICS_IMAGE:
mMessage << "SurfaceType::COREGRAPHICS_IMAGE";
break;
case SurfaceType::COREGRAPHICS_CGCONTEXT:
mMessage << "SurfaceType::COREGRAPHICS_CGCONTEXT";
break;
case SurfaceType::SKIA:
mMessage << "SurfaceType::SKIA";
break;
case SurfaceType::DUAL_DT:
mMessage << "SurfaceType::DUAL_DT";
break;
case SurfaceType::D2D1_1_IMAGE:
mMessage << "SurfaceType::D2D1_1_IMAGE";
break;
case SurfaceType::RECORDING:
mMessage << "SurfaceType::RECORDING";
break;
case SurfaceType::TILED:
mMessage << "SurfaceType::TILED";
break;
case SurfaceType::DATA_SHARED:
mMessage << "SurfaceType::DATA_SHARED";
break;
default:
mMessage << "Invalid SurfaceType (" << (int)aType << ")";
break;
}
}
return *this;
}
inline bool LogIt() const { return mLogIt; }
inline bool NoNewline() const {
return mOptions & int(LogOptions::NoNewline);
}
inline bool AutoPrefix() const {
return mOptions & int(LogOptions::AutoPrefix);
}
inline bool ValidReason() const {
return (int)mReason > (int)LogReason::MustBeMoreThanThis &&
(int)mReason < (int)LogReason::MustBeLessThanThis;
}
// We do not want this version to do any work, and stringstream can't be
// copied anyway. It does come in handy for the "Once" macro defined below.
MOZ_IMPLICIT Log(const Log& log) { Init(log.mOptions, false, log.mReason); }
private:
// Initialization common to two constructors
void Init(int aOptions, bool aLogIt, LogReason aReason) {
mOptions = aOptions;
mReason = aReason;
mLogIt = aLogIt;
if (mLogIt) {
if (AutoPrefix()) {
if (mOptions & int(LogOptions::AssertOnCall)) {
mMessage << "[GFX" << L;
} else {
mMessage << "[GFX" << L << "-";
}
}
if ((mOptions & int(LogOptions::CrashAction)) && ValidReason()) {
mMessage << " " << (int)mReason;
}
if (AutoPrefix()) {
mMessage << "]: ";
}
}
}
void WriteLog(const std::string& aString) {
if (MOZ_UNLIKELY(LogIt())) {
Logger::OutputMessage(aString, L, NoNewline());
// Assert if required. We don't have a three parameter MOZ_ASSERT
// so use the underlying functions instead (see bug 1281702):
#ifdef DEBUG
if (mOptions & int(LogOptions::AssertOnCall)) {
MOZ_ReportAssertionFailure(aString.c_str(), __FILE__, __LINE__);
MOZ_CRASH("GFX: An assert from the graphics logger");
}
#endif
if ((mOptions & int(LogOptions::CrashAction)) && ValidReason()) {
Logger::CrashAction(mReason);
}
}
}
std::stringstream mMessage;
int mOptions;
LogReason mReason;
bool mLogIt;
};
typedef Log<LOG_DEBUG> DebugLog;
typedef Log<LOG_WARNING> WarningLog;
typedef Log<LOG_CRITICAL, CriticalLogger> CriticalLog;
// Macro to glue names to get us less chance of name clashing.
#if defined GFX_LOGGING_GLUE1 || defined GFX_LOGGING_GLUE
# error "Clash of the macro GFX_LOGGING_GLUE1 or GFX_LOGGING_GLUE"
#endif
#define GFX_LOGGING_GLUE1(x, y) x##y
#define GFX_LOGGING_GLUE(x, y) GFX_LOGGING_GLUE1(x, y)
// This log goes into crash reports, use with care.
#define gfxCriticalError mozilla::gfx::CriticalLog
#define gfxCriticalErrorOnce \
static gfxCriticalError GFX_LOGGING_GLUE(sOnceAtLine, __LINE__) = \
gfxCriticalError
// This is a shortcut for errors we want logged in crash reports/about support
// but we do not want asserting. These are available in all builds, so it is
// not worth trying to do magic to avoid matching the syntax of
// gfxCriticalError.
// So, this one is used as
// gfxCriticalNote << "Something to report and not assert";
// while the critical error is
// gfxCriticalError() << "Something to report and assert";
#define gfxCriticalNote \
gfxCriticalError(gfxCriticalError::DefaultOptions(false))
#define gfxCriticalNoteOnce \
static gfxCriticalError GFX_LOGGING_GLUE(sOnceAtLine, __LINE__) = \
gfxCriticalNote
// The "once" versions will only trigger the first time through. You can do
// this: gfxCriticalErrorOnce() << "This message only shows up once; instead of
// the usual: static bool firstTime = true; if (firstTime) {
// firstTime = false;
// gfxCriticalError() << "This message only shows up once;
// }
#if defined(DEBUG)
# define gfxDebug mozilla::gfx::DebugLog
# define gfxDebugOnce \
static gfxDebug GFX_LOGGING_GLUE(sOnceAtLine, __LINE__) = gfxDebug
#else
# define gfxDebug \
if (1) \
; \
else \
mozilla::gfx::NoLog
# define gfxDebugOnce \
if (1) \
; \
else \
mozilla::gfx::NoLog
#endif
// Have gfxWarning available (behind a runtime preference)
#define gfxWarning mozilla::gfx::WarningLog
#define gfxWarningOnce \
static gfxWarning GFX_LOGGING_GLUE(sOnceAtLine, __LINE__) = gfxWarning
// In the debug build, this is equivalent to the default gfxCriticalError.
// In the non-debug build, on nightly and dev edition, it will MOZ_CRASH.
// On beta and release versions, it will telemetry count, but proceed.
//
// You should create a (new) enum in the LogReason and use it for the reason
// parameter to ensure uniqueness.
#define gfxDevCrash(reason) \
gfxCriticalError(int(gfx::LogOptions::AutoPrefix) | \
int(gfx::LogOptions::AssertOnCall) | \
int(gfx::LogOptions::CrashAction), \
(reason))
// See nsDebug.h and the NS_WARN_IF macro
#ifdef __cplusplus
// For now, have MOZ2D_ERROR_IF available in debug and non-debug builds
inline bool MOZ2D_error_if_impl(bool aCondition, const char* aExpr,
const char* aFile, int32_t aLine) {
if (MOZ_UNLIKELY(aCondition)) {
gfxCriticalError() << aExpr << " at " << aFile << ":" << aLine;
}
return aCondition;
}
# define MOZ2D_ERROR_IF(condition) \
MOZ2D_error_if_impl(condition, #condition, __FILE__, __LINE__)
# ifdef DEBUG
inline bool MOZ2D_warn_if_impl(bool aCondition, const char* aExpr,
const char* aFile, int32_t aLine) {
if (MOZ_UNLIKELY(aCondition)) {
gfxWarning() << aExpr << " at " << aFile << ":" << aLine;
}
return aCondition;
}
# define MOZ2D_WARN_IF(condition) \
MOZ2D_warn_if_impl(condition, #condition, __FILE__, __LINE__)
# else
# define MOZ2D_WARN_IF(condition) (bool)(condition)
# endif
#endif
const int INDENT_PER_LEVEL = 2;
template <int Level = LOG_DEBUG>
class TreeLog {
public:
explicit TreeLog(const std::string& aPrefix = "")
: mLog(int(LogOptions::NoNewline)),
mPrefix(aPrefix),
mDepth(0),
mStartOfLine(true),
mConditionedOnPref(false),
mPrefFunction(nullptr) {}
template <typename T>
TreeLog& operator<<(const T& aObject) {
if (mConditionedOnPref && !mPrefFunction()) {
return *this;
}
if (mStartOfLine) {
if (!mPrefix.empty()) {
mLog << '[' << mPrefix << "] ";
}
mLog << std::string(mDepth * INDENT_PER_LEVEL, ' ');
mStartOfLine = false;
}
mLog << aObject;
if (EndsInNewline(aObject)) {
// Don't indent right here as the user may change the indent
// between now and the first output to the next line.
mLog.Flush();
mStartOfLine = true;
}
return *this;
}
void IncreaseIndent() { ++mDepth; }
void DecreaseIndent() {
MOZ_ASSERT(mDepth > 0);
--mDepth;
}
void ConditionOnPrefFunction(bool (*aPrefFunction)()) {
mConditionedOnPref = true;
mPrefFunction = aPrefFunction;
}
private:
Log<Level> mLog;
std::string mPrefix;
uint32_t mDepth;
bool mStartOfLine;
bool mConditionedOnPref;
bool (*mPrefFunction)();
template <typename T>
static bool EndsInNewline(const T& aObject) {
return false;
}
static bool EndsInNewline(const std::string& aString) {
return !aString.empty() && aString[aString.length() - 1] == '\n';
}
static bool EndsInNewline(char aChar) { return aChar == '\n'; }
static bool EndsInNewline(const char* aString) {
return EndsInNewline(std::string(aString));
}
};
template <int Level = LOG_DEBUG>
class TreeAutoIndent final {
public:
explicit TreeAutoIndent(TreeLog<Level>& aTreeLog) : mTreeLog(aTreeLog) {
mTreeLog.IncreaseIndent();
}
TreeAutoIndent(const TreeAutoIndent& aTreeAutoIndent)
: mTreeLog(aTreeAutoIndent.mTreeLog) {
mTreeLog.IncreaseIndent();
}
TreeAutoIndent& operator=(const TreeAutoIndent& aTreeAutoIndent) = delete;
~TreeAutoIndent() { mTreeLog.DecreaseIndent(); }
private:
TreeLog<Level>& mTreeLog;
};
} // namespace gfx
} // namespace mozilla
#endif /* MOZILLA_GFX_LOGGING_H_ */
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