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Commit 2c5d6343 authored by Derek Sollenberger's avatar Derek Sollenberger
Browse files

Create a version_script to explicitly define exported symbols for libhwui 

The linker script defines both the C and C++ headers exported by libhwui
and libskia (included via whole_static_libs).  Reducing the surface
area makes it clear what libhwui's external dependencies are as well
as reducing the binary size by about ~12% (1.04 MB on 64-bit and 789KB
on 32-bit builds for the Pixel 3a in userdebug).

Test: compiles and links
Bug: 150782769
Change-Id: Ia202a12c1605c851c52d953f0db0f4814ade8dfd
parent 19a92e7e

libs/hwui/Android.bp

+5 −0
Original line number Diff line number Diff line
@@ -603,6 +603,11 @@ cc_library { 
        "android_graphics_jni",

    ],

    export_header_lib_headers: ["android_graphics_apex_headers"],

    target: {

        android: {

            version_script: "libhwui.map.txt",

        }

    },

}



cc_library_static {

libs/hwui/libhwui.map.txt

0 → 100644
+70 −0
Original line number Diff line number Diff line 
LIBHWUI {

  global:

    /* listing of all C APIs to be exposed by libhwui to consumers outside of the module */

    ABitmap_getInfoFromJava;

    ABitmap_acquireBitmapFromJava;

    ABitmap_copy;

    ABitmap_acquireRef;

    ABitmap_releaseRef;

    ABitmap_getInfo;

    ABitmap_getDataSpace;

    ABitmap_getPixels;

    ABitmap_notifyPixelsChanged;

    ABitmapConfig_getFormatFromConfig;

    ABitmapConfig_getConfigFromFormat;

    ABitmap_compress;

    ABitmap_getHardwareBuffer;

    ACanvas_isSupportedPixelFormat;

    ACanvas_getNativeHandleFromJava;

    ACanvas_createCanvas;

    ACanvas_destroyCanvas;

    ACanvas_setBuffer;

    ACanvas_clipRect;

    ACanvas_clipOutRect;

    ACanvas_drawRect;

    ACanvas_drawBitmap;

    init_android_graphics;

    register_android_graphics_classes;

    register_android_graphics_GraphicsStatsService;

    zygote_preload_graphics;

    AMatrix_getContents;

    APaint_createPaint;

    APaint_destroyPaint;

    APaint_setBlendMode;

    ARegionIterator_acquireIterator;

    ARegionIterator_releaseIterator;

    ARegionIterator_isComplex;

    ARegionIterator_isDone;

    ARegionIterator_next;

    ARegionIterator_getRect;

    ARegionIterator_getTotalBounds;

    ARenderThread_dumpGraphicsMemory;

  local:

    *;

};



LIBHWUI_PLATFORM {

  global:

    extern "C++" {

      /* required by libwebviewchromium_plat_support */

      android::uirenderer::ColorSpaceToADataSpace*;

      android::uirenderer::WebViewFunctor_*;

      GraphicsJNI::getNativeCanvas*;

      SkCanvasStateUtils::ReleaseCanvasState*;

      SkColorSpace::toXYZD50*;

      SkColorSpace::transferFn*;

      /* required by libjnigraphics */

      android::ImageDecoder::*;

      android::uirenderer::DataSpaceToColorSpace*;

      android::uirenderer::ColorSpaceToADataSpace*;

      getMimeType*;

      SkAndroidCodec::*;

      SkCodec::MakeFromStream*;

      SkColorInfo::*;

      SkFILEStream::SkFILEStream*;

      SkImageInfo::*;

      SkMemoryStream::SkMemoryStream*;

    };

  local:

    *;

};