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android_frameworks_base/core/jni
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Neil Fuller 32b88b48da Replacing FloatMath native implementation with calls to Math 
On modern versions of Android running in AOT mode
FloatMath is slower than Math. Calls to Math.sqrt(),
etc. are replaced by intrinsics which can be as small
as a single CPU opcode.

When running in interpreted mode the new
implementation is unfortunately slower, but I'm
judging this acceptable and likely to be improved
over time. This change saves a small amount of native
code.

Example timings:

Mako AOSP AOT:

Method: Original / New / Direct call to Math
ceil: 596ns / 146.ns / 111ns
sqrt: 694ns / 56ns / 25ns

Mako AOSP interpreted:

Method: Original / New / Direct call to Math
ceil: 1900ns / 2307ns / 1485ns
sqrt: 1998ns / 2603ns / 1788ns

Other calls Mako AOT:

Method: Original / New
cos: 635ns / 270ns
exp: 566ns / 324ns
floor: 604ns / 150ns
hypot: 631ns / 232ns
pow: 936ns / 643ns
sin: 641ns / 299ns

The advice to use Math directly, in preference to
FloatMath, is still good. FloatMath will be deprecated
separately.

Bug: https://code.google.com/p/android/issues/detail?id=36199
Change-Id: I8d1947d88b3c576643138b1df589fb9da7c1ab88
2014-10-15 11:47:58 +01:00
..
android
Merge "Use char16_t for char things."
2014-09-09 04:30:35 +00:00
android_animation_PropertyValuesHolder.cpp
AArch64: Use of long for pointers in PropertyValuesHolder
2014-01-29 10:47:27 +00:00
android_app_backup_FullBackup.cpp
AArch64: Use long for pointers in App/Backup
2014-01-08 11:54:01 +00:00
android_app_NativeActivity.cpp
Integrate NativeActivity with NativeBridge interfaces
2014-08-15 10:18:40 +01:00
android_backup_BackupDataInput.cpp
AArch64: Use long for pointers in App/Backup
2014-01-08 11:54:01 +00:00
android_backup_BackupDataOutput.cpp
AArch64: Use long for pointers in App/Backup
2014-01-08 11:54:01 +00:00
android_backup_BackupHelperDispatcher.cpp
AArch64: Use long for pointers in App/Backup
2014-01-08 11:54:01 +00:00
android_backup_FileBackupHelperBase.cpp
AArch64: Use long for pointers in App/Backup
2014-01-08 11:54:01 +00:00
android_content_res_Configuration.cpp
Don't register methods when there's nothing to register.
2014-03-19 14:13:27 +00:00
android_content_res_ObbScanner.cpp
…
android_database_CursorWindow.cpp
frameworks: 64 bit compile issues
2014-04-16 10:43:48 -07:00
android_database_SQLiteCommon.cpp
…
android_database_SQLiteCommon.h
…
android_database_SQLiteConnection.cpp
AArch64: Use long for pointers
2014-01-08 11:53:21 +00:00
android_database_SQLiteDebug.cpp
…
android_database_SQLiteGlobal.cpp
frameworks/base: fix errors inside ALOGV
2014-02-09 21:54:01 -08:00
android_ddm_DdmHandleNativeHeap.cpp
Add new header to support 32 bit/64 bit dumps.
2014-09-05 17:17:04 -07:00
android_emoji_EmojiFactory.cpp
Use long for pointers in EmojiFactory and PdfDocument
2014-01-31 12:03:28 +00:00
android_hardware_camera2_CameraMetadata.cpp
…
android_hardware_Camera.cpp
AArch64: Use long for pointers in hardware classes
2014-01-08 10:17:21 +00:00
android_hardware_SensorManager.cpp
AArch64: Use long for pointers in hardware classes
2014-01-08 10:17:21 +00:00
android_hardware_SerialPort.cpp
…
android_hardware_UsbDevice.cpp
…
android_hardware_UsbDeviceConnection.cpp
AArch64: Use long for pointers in hardware classes
2014-01-08 10:17:21 +00:00
android_hardware_UsbRequest.cpp
AArch64: Use long for pointers in hardware classes
2014-01-08 10:17:21 +00:00
android_media_AudioRecord.cpp
fix AudioTrack and AudioRecord JNI
2014-07-04 09:37:28 +01:00
android_media_AudioSystem.cpp
Fixed VM memory leak in AudioSystem JNI interface
2014-05-30 16:51:07 +03:00
android_media_AudioTrack.cpp
fix AudioTrack and AudioRecord JNI
2014-07-04 09:37:28 +01:00
android_media_JetPlayer.cpp
AArch64: Use long for pointers in media classes
2014-01-15 13:09:27 +00:00
android_media_RemoteDisplay.cpp
AArch64: Use long for pointers in media classes
2014-01-15 13:09:27 +00:00
android_media_ToneGenerator.cpp
AArch64: Use long for pointers in media classes
2014-01-15 13:09:27 +00:00
android_net_LocalSocketImpl.cpp
Clean up ExceptionOccurred.
2014-08-20 16:24:47 -07:00
android_net_NetUtils.cpp
…
android_net_TrafficStats.cpp
frameworks: 64 bit compile issues
2014-04-16 10:43:48 -07:00
android_net_wifi_WifiNative.cpp
…
android_nfc.h
…
android_nio_utils.cpp
AArch64: Make frameworks/base code more portable
2014-03-27 12:30:42 +00:00
android_nio_utils.h
…
android_opengl_EGL14.cpp
EGL14.eglCreateWindowSurface should set producerControlledByApp
2014-03-06 14:18:44 -08:00
android_opengl_EGLExt.cpp
Use long for pointers in opengl/EGL classes
2014-02-24 15:50:22 +00:00
android_opengl_GLES10.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
android_opengl_GLES10Ext.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
android_opengl_GLES11.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
android_opengl_GLES11Ext.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
android_opengl_GLES20.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
android_opengl_GLES30.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
android_os_Debug.cpp
Fix reading memory usage for 64-bit processes
2014-06-17 15:25:45 -07:00
android_os_MemoryFile.cpp
Fix error checking in MemoryFile.
2014-01-16 13:18:28 +00:00
android_os_MessageQueue.cpp
Clean up ExceptionOccurred.
2014-08-20 16:24:47 -07:00
android_os_MessageQueue.h
…
android_os_Parcel.cpp
AArch64: Make Binder and Parcel 64-bit compatible
2014-01-23 16:25:19 +00:00
android_os_Parcel.h
…
android_os_SELinux.cpp
Clean up ExceptionOccurred.
2014-08-20 16:24:47 -07:00
android_os_SystemClock.cpp
Move time setting code from SystemClock to AlarmManagerService
2014-02-21 09:53:19 -08:00
android_os_SystemProperties.cpp
…
android_os_Trace.cpp
…
android_os_UEventObserver.cpp
…
android_server_NetworkManagementSocketTagger.cpp
Clean up ExceptionOccurred.
2014-08-20 16:24:47 -07:00
android_server_Watchdog.cpp
…
android_text_AndroidBidi.cpp
AArch64: Make frameworks/base code more portable
2014-03-27 12:30:42 +00:00
android_text_AndroidCharacter.cpp
AArch64: Make frameworks/base code more portable
2014-03-27 12:30:42 +00:00
android_util_AssetManager.cpp
Runtime resource overlay, iteration 2
2014-02-03 11:20:30 +01:00
android_util_Binder.cpp
Clean up ExceptionOccurred.
2014-08-20 16:24:47 -07:00
android_util_Binder.h
…
android_util_EventLog.cpp
jni: liblog reading error API incorrect
2014-04-08 16:17:51 -07:00
android_util_FileObserver.cpp
…
android_util_Log.cpp
AArch64: Make frameworks/base code more portable
2014-03-27 12:30:42 +00:00
android_util_Log.h
…
android_util_Process.cpp
Allow AOSP to boot.
2014-09-25 11:48:11 -07:00
android_util_StringBlock.cpp
AArch64: Make AssetManager and related classes 64-bit compatible
2014-01-31 14:14:29 +00:00
android_util_XmlBlock.cpp
AArch64: Make AssetManager and related classes 64-bit compatible
2014-01-31 14:14:29 +00:00
android_view_DisplayEventReceiver.cpp
AArch64: Use long for pointers in DisplayEventReceiver
2014-01-07 12:48:43 +00:00
android_view_GLES20Canvas.cpp
Merge "Fix several bad function definitions."
2014-02-20 12:55:27 +00:00
android_view_GLES20DisplayList.cpp
AArch64: Make graphics classes 64-bit compatible
2014-01-28 17:40:38 +00:00
android_view_GraphicBuffer.cpp
AArch64: Make graphics classes 64-bit compatible
2014-01-28 17:40:38 +00:00
android_view_GraphicBuffer.h
…
android_view_HardwareRenderer.cpp
…
android_view_InputChannel.cpp
AArch64: Use long for pointers in view/input classes
2014-01-09 15:12:04 +00:00
android_view_InputChannel.h
…
android_view_InputDevice.cpp
…
android_view_InputDevice.h
…
android_view_InputEventReceiver.cpp
AArch64: Use long for pointers in view/input classes
2014-01-09 15:12:04 +00:00
android_view_InputEventSender.cpp
AArch64: Use long for pointers in view/input classes
2014-01-09 15:12:04 +00:00
android_view_InputQueue.cpp
AArch64: Use long for pointers in view/input classes
2014-01-09 15:12:04 +00:00
android_view_KeyCharacterMap.cpp
AArch64: Use long for pointers in KeyCharacterMap class
2014-01-08 18:19:21 +00:00
android_view_KeyCharacterMap.h
…
android_view_KeyEvent.cpp
…
android_view_KeyEvent.h
…
android_view_MotionEvent.cpp
AArch64: Use long for pointers in MotionEvent class
2014-01-08 18:31:59 +00:00
android_view_MotionEvent.h
…
android_view_PointerIcon.cpp
…
android_view_PointerIcon.h
…
android_view_Surface.cpp
resolved conflicts for merge of 8d3281f5 to klp-dev-plus-aosp
2014-03-06 20:10:19 -05:00
android_view_SurfaceControl.cpp
resolved conflicts for merge of 8d3281f5 to klp-dev-plus-aosp
2014-03-06 20:10:19 -05:00
android_view_SurfaceSession.cpp
AArch64: Use long for pointers in SurfaceSession class
2014-02-06 16:57:49 +00:00
android_view_TextureView.cpp
resolved conflicts for merge of 8d3281f5 to klp-dev-plus-aosp
2014-03-06 20:10:19 -05:00
android_view_VelocityTracker.cpp
AArch64: Use long for pointers in VelocityTracker class
2014-01-08 18:48:19 +00:00
Android.mk
Replacing FloatMath native implementation with calls to Math
2014-10-15 11:47:58 +01:00
AndroidRuntime.cpp
Replacing FloatMath native implementation with calls to Math
2014-10-15 11:47:58 +01:00
BindTest.cpp
…
com_android_internal_content_NativeLibraryHelper.cpp
update mLastSlash for gdbserver
2014-06-13 16:24:58 -07:00
com_android_internal_net_NetworkStatsFactory.cpp
Fix use of %llx for sscanf 64 bit values.
2014-09-03 19:59:08 -07:00
com_android_internal_os_Zygote.cpp
Frameworks/base: Early init native bridge
2014-09-22 16:04:37 -07:00
com_android_internal_os_ZygoteInit.cpp
Clean up ExceptionOccurred.
2014-08-20 16:24:47 -07:00
com_google_android_gles_jni_EGLImpl.cpp
Use long to store pointers in GLES_JNI/EGL classes
2014-01-31 16:27:30 +00:00
com_google_android_gles_jni_GLImpl.cpp
Use reinterpret_cast when an integer is cast to a pointer
2014-02-24 14:33:52 +00:00
GraphicsExternGlue.h
…
GraphicsRegisterGlue.h
…
MODULE_LICENSE_APACHE2
…
NOTICE
…