The Tor Browser: gfx/2d/Factory.cpp@97036ab72558 (annotated)

gfx/2d/Factory.cpp@97036ab72558 (annotated)

gfx/2d/Factory.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
  * 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 "2D.h"
 #ifdef USE_CAIRO
 #include "DrawTargetCairo.h"
 #include "ScaledFontCairo.h"
 #endif
 #ifdef USE_SKIA
 #include "DrawTargetSkia.h"
 #include "ScaledFontBase.h"
 #ifdef MOZ_ENABLE_FREETYPE
 #define USE_SKIA_FREETYPE
 #include "ScaledFontCairo.h"
 #endif
 #endif
 #if defined(WIN32) && defined(USE_SKIA)
 #include "ScaledFontWin.h"
 #endif
 #ifdef XP_MACOSX
 #include "ScaledFontMac.h"
 #endif
 #ifdef XP_MACOSX
 #include "DrawTargetCG.h"
 #endif
 #ifdef WIN32
 #include "DrawTargetD2D.h"
 #ifdef USE_D2D1_1
 #include "DrawTargetD2D1.h"
 #endif
 #include "ScaledFontDWrite.h"
 #include <d3d10_1.h>
 #include "HelpersD2D.h"
 #endif
 #include "DrawTargetDual.h"
 #include "DrawTargetRecording.h"
 #include "SourceSurfaceRawData.h"
 #include "DrawEventRecorder.h"
 #include "Logging.h"
 #include "mozilla/CheckedInt.h"
 #if defined(DEBUG) || defined(PR_LOGGING)
 GFX2D_API PRLogModuleInfo *
 GetGFX2DLog()
 {
   static PRLogModuleInfo *sLog;
   if (!sLog)
     sLog = PR_NewLogModule("gfx2d");
   return sLog;
 }
 #endif
 // The following code was largely taken from xpcom/glue/SSE.cpp and
 // made a little simpler.
 enum CPUIDRegister { eax = 0, ebx = 1, ecx = 2, edx = 3 };
 #ifdef HAVE_CPUID_H
 #if !(defined(__SSE2__) || defined(_M_X64) || \
      (defined(_M_IX86_FP) && _M_IX86_FP >= 2))
 // cpuid.h is available on gcc 4.3 and higher on i386 and x86_64
 #include <cpuid.h>
 static inline bool
 HasCPUIDBit(unsigned int level, CPUIDRegister reg, unsigned int bit)
 {
   unsigned int regs[4];
   return __get_cpuid(level, &regs[0], &regs[1], &regs[2], &regs[3]) &&
          (regs[reg] & bit);
 }
 #endif
 #define HAVE_CPU_DETECTION
 #else
 #if defined(_MSC_VER) && _MSC_VER >= 1600 && (defined(_M_IX86) || defined(_M_AMD64))
 // MSVC 2005 or later supports __cpuid by intrin.h
 // But it does't work on MSVC 2005 with SDK 7.1 (Bug 753772)
 #include <intrin.h>
 #define HAVE_CPU_DETECTION
 #elif defined(__SUNPRO_CC) && (defined(__i386) || defined(__x86_64__))
 // Define a function identical to MSVC function.
 #ifdef __i386
 static void
 __cpuid(int CPUInfo[4], int InfoType)
 {
   asm (
     "xchg %esi, %ebx\n"
     "cpuid\n"
     "movl %eax, (%edi)\n"
     "movl %ebx, 4(%edi)\n"
     "movl %ecx, 8(%edi)\n"
     "movl %edx, 12(%edi)\n"
     "xchg %esi, %ebx\n"
     :
     : "a"(InfoType), // %eax
       "D"(CPUInfo) // %edi
     : "%ecx", "%edx", "%esi"
   );
 }
 #else
 static void
 __cpuid(int CPUInfo[4], int InfoType)
 {
   asm (
     "xchg %rsi, %rbx\n"
     "cpuid\n"
     "movl %eax, (%rdi)\n"
     "movl %ebx, 4(%rdi)\n"
     "movl %ecx, 8(%rdi)\n"
     "movl %edx, 12(%rdi)\n"
     "xchg %rsi, %rbx\n"
     :
     : "a"(InfoType), // %eax
       "D"(CPUInfo) // %rdi
     : "%ecx", "%edx", "%rsi"
   );
 }
 #define HAVE_CPU_DETECTION
 #endif
 #endif
 #ifdef HAVE_CPU_DETECTION
 static inline bool
 HasCPUIDBit(unsigned int level, CPUIDRegister reg, unsigned int bit)
 {
   // Check that the level in question is supported.
   volatile int regs[4];
   __cpuid((int *)regs, level & 0x80000000u);
   if (unsigned(regs[0]) < level)
     return false;
   __cpuid((int *)regs, level);
   return !!(unsigned(regs[reg]) & bit);
 }
 #endif
 #endif
 namespace mozilla {
 namespace gfx {
 // XXX - Need to define an API to set this.
 GFX2D_API int sGfxLogLevel = LOG_DEBUG;
 #ifdef WIN32
 ID3D10Device1 *Factory::mD3D10Device;
 #ifdef USE_D2D1_1
 ID3D11Device *Factory::mD3D11Device;
 ID2D1Device *Factory::mD2D1Device;
 #endif
 #endif
 DrawEventRecorder *Factory::mRecorder;
 bool
 Factory::HasSSE2()
 {
 #if defined(__SSE2__) || defined(_M_X64) || \
     (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
   // gcc with -msse2 (default on OSX and x86-64)
   // cl.exe with -arch:SSE2 (default on x64 compiler)
   return true;
 #elif defined(HAVE_CPU_DETECTION)
   return HasCPUIDBit(1u, edx, (1u<<26));
 #else
   return false;
 #endif
 }
 bool
 Factory::CheckSurfaceSize(const IntSize &sz, int32_t limit)
 {
   if (sz.width < 0 || sz.height < 0) {
     gfxDebug() << "Surface width or height < 0!";
     return false;
   }
   // reject images with sides bigger than limit
   if (limit && (sz.width > limit || sz.height > limit)) {
     gfxDebug() << "Surface size too large (exceeds caller's limit)!";
     return false;
   }
   // make sure the surface area doesn't overflow a int32_t
   CheckedInt<int32_t> tmp = sz.width;
   tmp *= sz.height;
   if (!tmp.isValid()) {
     gfxDebug() << "Surface size too large (would overflow)!";
     return false;
   }
   // assuming 4 bytes per pixel, make sure the allocation size
   // doesn't overflow a int32_t either
   CheckedInt<int32_t> stride = sz.width;
   stride *= 4;
   // When aligning the stride to 16 bytes, it can grow by up to 15 bytes.
   stride += 16 - 1;
   if (!stride.isValid()) {
     gfxDebug() << "Surface size too large (stride overflows int32_t)!";
     return false;
   }
   CheckedInt<int32_t> numBytes = GetAlignedStride<16>(sz.width * 4);
   numBytes *= sz.height;
   if (!numBytes.isValid()) {
     gfxDebug() << "Surface size too large (allocation size would overflow int32_t)!";
     return false;
   }
   return true;
 }
 TemporaryRef<DrawTarget>
 Factory::CreateDrawTarget(BackendType aBackend, const IntSize &aSize, SurfaceFormat aFormat)
 {
   if (!CheckSurfaceSize(aSize)) {
     return nullptr;
   }
   RefPtr<DrawTarget> retVal;
   switch (aBackend) {
 #ifdef WIN32
   case BackendType::DIRECT2D:
     {
       RefPtr<DrawTargetD2D> newTarget;
       newTarget = new DrawTargetD2D();
       if (newTarget->Init(aSize, aFormat)) {
         retVal = newTarget;
       }
       break;
     }
 #ifdef USE_D2D1_1
   case BackendType::DIRECT2D1_1:
     {
       RefPtr<DrawTargetD2D1> newTarget;
       newTarget = new DrawTargetD2D1();
       if (newTarget->Init(aSize, aFormat)) {
         retVal = newTarget;
       }
       break;
     }
 #endif
 #elif defined XP_MACOSX
   case BackendType::COREGRAPHICS:
   case BackendType::COREGRAPHICS_ACCELERATED:
     {
       RefPtr<DrawTargetCG> newTarget;
       newTarget = new DrawTargetCG();
       if (newTarget->Init(aBackend, aSize, aFormat)) {
         retVal = newTarget;
       }
       break;
     }
 #endif
 #ifdef USE_SKIA
   case BackendType::SKIA:
     {
       RefPtr<DrawTargetSkia> newTarget;
       newTarget = new DrawTargetSkia();
       if (newTarget->Init(aSize, aFormat)) {
         retVal = newTarget;
       }
       break;
     }
 #endif
 #ifdef USE_CAIRO
   case BackendType::CAIRO:
     {
       RefPtr<DrawTargetCairo> newTarget;
       newTarget = new DrawTargetCairo();
       if (newTarget->Init(aSize, aFormat)) {
         retVal = newTarget;
       }
       break;
     }
 #endif
   default:
     gfxDebug() << "Invalid draw target type specified.";
     return nullptr;
   }
   if (mRecorder && retVal) {
     RefPtr<DrawTarget> recordDT;
     recordDT = new DrawTargetRecording(mRecorder, retVal);
     return recordDT;
   }
   if (!retVal) {
     // Failed
     gfxDebug() << "Failed to create DrawTarget, Type: " << int(aBackend) << " Size: " << aSize;
   }
   return retVal;
 }
 TemporaryRef<DrawTarget>
 Factory::CreateRecordingDrawTarget(DrawEventRecorder *aRecorder, DrawTarget *aDT)
 {
   return new DrawTargetRecording(aRecorder, aDT);
 }
 TemporaryRef<DrawTarget>
 Factory::CreateDrawTargetForData(BackendType aBackend,
                                  unsigned char *aData,
                                  const IntSize &aSize,
                                  int32_t aStride,
                                  SurfaceFormat aFormat)
 {
   if (!CheckSurfaceSize(aSize)) {
     return nullptr;
   }
   RefPtr<DrawTarget> retVal;
   switch (aBackend) {
 #ifdef USE_SKIA
   case BackendType::SKIA:
     {
       RefPtr<DrawTargetSkia> newTarget;
       newTarget = new DrawTargetSkia();
       newTarget->Init(aData, aSize, aStride, aFormat);
       retVal = newTarget;
       break;
     }
 #endif
 #ifdef XP_MACOSX
   case BackendType::COREGRAPHICS:
     {
       RefPtr<DrawTargetCG> newTarget = new DrawTargetCG();
       if (newTarget->Init(aBackend, aData, aSize, aStride, aFormat))
         return newTarget;
       break;
     }
 #endif
 #ifdef USE_CAIRO
   case BackendType::CAIRO:
     {
       RefPtr<DrawTargetCairo> newTarget;
       newTarget = new DrawTargetCairo();
       if (newTarget->Init(aData, aSize, aStride, aFormat)) {
         retVal = newTarget;
       }
       break;
     }
 #endif
   default:
     gfxDebug() << "Invalid draw target type specified.";
     return nullptr;
   }
   if (mRecorder && retVal) {
     RefPtr<DrawTarget> recordDT = new DrawTargetRecording(mRecorder, retVal, true);
     return recordDT;
   }
   if (!retVal) {
     gfxDebug() << "Failed to create DrawTarget, Type: " << int(aBackend) << " Size: " << aSize;
   }
   return retVal;
 }
 TemporaryRef<ScaledFont>
 Factory::CreateScaledFontForNativeFont(const NativeFont &aNativeFont, Float aSize)
 {
   switch (aNativeFont.mType) {
 #ifdef WIN32
   case NativeFontType::DWRITE_FONT_FACE:
     {
       return new ScaledFontDWrite(static_cast<IDWriteFontFace*>(aNativeFont.mFont), aSize);
     }
 #if defined(USE_CAIRO) || defined(USE_SKIA)
   case NativeFontType::GDI_FONT_FACE:
     {
       return new ScaledFontWin(static_cast<LOGFONT*>(aNativeFont.mFont), aSize);
     }
 #endif
 #endif
 #ifdef XP_MACOSX
   case NativeFontType::MAC_FONT_FACE:
     {
       return new ScaledFontMac(static_cast<CGFontRef>(aNativeFont.mFont), aSize);
     }
 #endif
 #if defined(USE_CAIRO) || defined(USE_SKIA_FREETYPE)
   case NativeFontType::CAIRO_FONT_FACE:
     {
       return new ScaledFontCairo(static_cast<cairo_scaled_font_t*>(aNativeFont.mFont), aSize);
     }
 #endif
   default:
     gfxWarning() << "Invalid native font type specified.";
     return nullptr;
   }
 }
 TemporaryRef<ScaledFont>
 Factory::CreateScaledFontForTrueTypeData(uint8_t *aData, uint32_t aSize,
                                          uint32_t aFaceIndex, Float aGlyphSize,
                                          FontType aType)
 {
   switch (aType) {
 #ifdef WIN32
   case FontType::DWRITE:
     {
       return new ScaledFontDWrite(aData, aSize, aFaceIndex, aGlyphSize);
     }
 #endif
   default:
     gfxWarning() << "Unable to create requested font type from truetype data";
     return nullptr;
   }
 }
 TemporaryRef<ScaledFont>
 Factory::CreateScaledFontWithCairo(const NativeFont& aNativeFont, Float aSize, cairo_scaled_font_t* aScaledFont)
 {
 #ifdef USE_CAIRO
   // In theory, we could pull the NativeFont out of the cairo_scaled_font_t*,
   // but that would require a lot of code that would be otherwise repeated in
   // various backends.
   // Therefore, we just reuse CreateScaledFontForNativeFont's implementation.
   RefPtr<ScaledFont> font = CreateScaledFontForNativeFont(aNativeFont, aSize);
   static_cast<ScaledFontBase*>(font.get())->SetCairoScaledFont(aScaledFont);
   return font;
 #else
   return nullptr;
 #endif
 }
 TemporaryRef<DrawTarget>
 Factory::CreateDualDrawTarget(DrawTarget *targetA, DrawTarget *targetB)
 {
   RefPtr<DrawTarget> newTarget =
     new DrawTargetDual(targetA, targetB);
   RefPtr<DrawTarget> retVal = newTarget;
   if (mRecorder) {
     retVal = new DrawTargetRecording(mRecorder, retVal);
   }
   return retVal;
 }
 #ifdef WIN32
 TemporaryRef<DrawTarget>
 Factory::CreateDrawTargetForD3D10Texture(ID3D10Texture2D *aTexture, SurfaceFormat aFormat)
 {
   RefPtr<DrawTargetD2D> newTarget;
   newTarget = new DrawTargetD2D();
   if (newTarget->Init(aTexture, aFormat)) {
     RefPtr<DrawTarget> retVal = newTarget;
     if (mRecorder) {
       retVal = new DrawTargetRecording(mRecorder, retVal, true);
     }
     return retVal;
   }
   gfxWarning() << "Failed to create draw target for D3D10 texture.";
   // Failed
   return nullptr;
 }
 TemporaryRef<DrawTarget>
 Factory::CreateDualDrawTargetForD3D10Textures(ID3D10Texture2D *aTextureA,
                                               ID3D10Texture2D *aTextureB,
                                               SurfaceFormat aFormat)
 {
   RefPtr<DrawTargetD2D> newTargetA;
   RefPtr<DrawTargetD2D> newTargetB;
   newTargetA = new DrawTargetD2D();
   if (!newTargetA->Init(aTextureA, aFormat)) {
     gfxWarning() << "Failed to create draw target for D3D10 texture.";
     return nullptr;
   }
   newTargetB = new DrawTargetD2D();
   if (!newTargetB->Init(aTextureB, aFormat)) {
     gfxWarning() << "Failed to create draw target for D3D10 texture.";
     return nullptr;
   }
   RefPtr<DrawTarget> newTarget =
     new DrawTargetDual(newTargetA, newTargetB);
   RefPtr<DrawTarget> retVal = newTarget;
   if (mRecorder) {
     retVal = new DrawTargetRecording(mRecorder, retVal);
   }
   return retVal;
 }
 void
 Factory::SetDirect3D10Device(ID3D10Device1 *aDevice)
 {
   // do not throw on failure; return error codes and disconnect the device
   // On Windows 8 error codes are the default, but on Windows 7 the
   // default is to throw (or perhaps only with some drivers?)
   aDevice->SetExceptionMode(0);
   mD3D10Device = aDevice;
 }
 ID3D10Device1*
 Factory::GetDirect3D10Device()
 {
 #ifdef DEBUG
   UINT mode = mD3D10Device->GetExceptionMode();
   MOZ_ASSERT(0 == mode);
 #endif
   return mD3D10Device;
 }
 #ifdef USE_D2D1_1
 void
 Factory::SetDirect3D11Device(ID3D11Device *aDevice)
 {
   mD3D11Device = aDevice;
   RefPtr<ID2D1Factory1> factory = D2DFactory1();
   RefPtr<IDXGIDevice> device;
   aDevice->QueryInterface((IDXGIDevice**)byRef(device));
   factory->CreateDevice(device, &mD2D1Device);
 }
 ID3D11Device*
 Factory::GetDirect3D11Device()
 {
   return mD3D11Device;
 }
 ID2D1Device*
 Factory::GetD2D1Device()
 {
   return mD2D1Device;
 }
 #endif
 TemporaryRef<GlyphRenderingOptions>
 Factory::CreateDWriteGlyphRenderingOptions(IDWriteRenderingParams *aParams)
 {
   RefPtr<GlyphRenderingOptions> options =
     new GlyphRenderingOptionsDWrite(aParams);
   return options;
 }
 uint64_t
 Factory::GetD2DVRAMUsageDrawTarget()
 {
   return DrawTargetD2D::mVRAMUsageDT;
 }
 uint64_t
 Factory::GetD2DVRAMUsageSourceSurface()
 {
   return DrawTargetD2D::mVRAMUsageSS;
 }
 void
 Factory::D2DCleanup()
 {
   DrawTargetD2D::CleanupD2D();
 }
 #endif // XP_WIN
 #ifdef USE_SKIA_GPU
 TemporaryRef<DrawTarget>
 Factory::CreateDrawTargetSkiaWithGrContext(GrContext* aGrContext,
                                            const IntSize &aSize,
                                            SurfaceFormat aFormat)
 {
   RefPtr<DrawTarget> newTarget = new DrawTargetSkia();
   if (!newTarget->InitWithGrContext(aGrContext, aSize, aFormat)) {
     return nullptr;
   }
   return newTarget;
 }
 #endif // USE_SKIA_GPU
 void
 Factory::PurgeAllCaches()
 {
 }
 #ifdef USE_SKIA_FREETYPE
 TemporaryRef<GlyphRenderingOptions>
 Factory::CreateCairoGlyphRenderingOptions(FontHinting aHinting, bool aAutoHinting)
 {
   RefPtr<GlyphRenderingOptionsCairo> options =
     new GlyphRenderingOptionsCairo();
   options->SetHinting(aHinting);
   options->SetAutoHinting(aAutoHinting);
   return options;
 }
 #endif
 TemporaryRef<DrawTarget>
 Factory::CreateDrawTargetForCairoSurface(cairo_surface_t* aSurface, const IntSize& aSize, SurfaceFormat* aFormat)
 {
   RefPtr<DrawTarget> retVal;
 #ifdef USE_CAIRO
   RefPtr<DrawTargetCairo> newTarget = new DrawTargetCairo();
   if (newTarget->Init(aSurface, aSize, aFormat)) {
     retVal = newTarget;
   }
   if (mRecorder && retVal) {
     RefPtr<DrawTarget> recordDT = new DrawTargetRecording(mRecorder, retVal, true);
     return recordDT;
   }
 #endif
   return retVal;
 }
 #ifdef XP_MACOSX
 TemporaryRef<DrawTarget>
 Factory::CreateDrawTargetForCairoCGContext(CGContextRef cg, const IntSize& aSize)
 {
   RefPtr<DrawTarget> retVal;
   RefPtr<DrawTargetCG> newTarget = new DrawTargetCG();
   if (newTarget->Init(cg, aSize)) {
     retVal = newTarget;
   }
   if (mRecorder && retVal) {
     RefPtr<DrawTarget> recordDT = new DrawTargetRecording(mRecorder, retVal);
     return recordDT;
   }
   return retVal;
 }
 #endif
 TemporaryRef<DataSourceSurface>
 Factory::CreateWrappingDataSourceSurface(uint8_t *aData, int32_t aStride,
                                          const IntSize &aSize,
                                          SurfaceFormat aFormat)
 {
   if (aSize.width <= 0 || aSize.height <= 0) {
     return nullptr;
   }
   RefPtr<SourceSurfaceRawData> newSurf = new SourceSurfaceRawData();
   if (newSurf->InitWrappingData(aData, aSize, aStride, aFormat, false)) {
     return newSurf;
   }
   return nullptr;
 }
 TemporaryRef<DataSourceSurface>
 Factory::CreateDataSourceSurface(const IntSize &aSize,
                                  SurfaceFormat aFormat)
 {
   if (!CheckSurfaceSize(aSize)) {
     return nullptr;
   }
   RefPtr<SourceSurfaceAlignedRawData> newSurf = new SourceSurfaceAlignedRawData();
   if (newSurf->Init(aSize, aFormat)) {
     return newSurf;
   }
   return nullptr;
 }
 TemporaryRef<DataSourceSurface>
 Factory::CreateDataSourceSurfaceWithStride(const IntSize &aSize,
                                            SurfaceFormat aFormat,
                                            int32_t aStride)
 {
   if (aStride < aSize.width * BytesPerPixel(aFormat)) {
     return nullptr;
   }
   RefPtr<SourceSurfaceAlignedRawData> newSurf = new SourceSurfaceAlignedRawData();
   if (newSurf->InitWithStride(aSize, aFormat, aStride)) {
     return newSurf;
   }
   return nullptr;
 }
 TemporaryRef<DrawEventRecorder>
 Factory::CreateEventRecorderForFile(const char *aFilename)
 {
   return new DrawEventRecorderFile(aFilename);
 }
 void
 Factory::SetGlobalEventRecorder(DrawEventRecorder *aRecorder)
 {
   mRecorder = aRecorder;
 }
 }
 }

The Tor Browser / annotate

gfx/2d/Factory.cpp@97036ab72558 (annotated)

gfx/2d/Factory.cpp