| f1a1e8d5528d123890c9e86f672084b86c69dcfe |
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14-May-2012 |
Derek Sollenberger <djsollen@google.com> |
Cleanup pixel ref mutexes in Skia
Mutexes in pixelrefs were done very sloppily initially. The code (a) assumes all
pixelref subclasses want a mutex to guard their lock/unlock virtuals, and (b)
most subclasses use the same mutex for *all* of their instances, even when there
is no explicit need to guard modifying one instances with another.
When we try drawing bitmaps from multiple threads, we are seeing a lot of slow-
down from these mutexes. This CL has two changes to try to speed things up.
1. Add setPreLocked(), for pixelrefs who never need the onLockPixels
virtual to be called. This speeds up those subclasses in multithreaded environs
as it avoids the mutex lock all together (e.g. SkMallocPixelRef).
2. Add setMutex() to allow a subclass to change the mutex choice. ashmem wants
this, since its unflattening constructor cannot pass down the null, it needs
to cleanup afterwards.
see https://codereview.appspot.com/6199075/
bug: 6469917
Change-Id: I81a7cfa0b2ead5a42059697eafa58de1e7a87da2
/external/skia/include/core/SkThread_platform.h
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| 4f1dae40e24d57d647db01443b8bf2410514b8b5 |
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06-Mar-2012 |
Derek Sollenberger <djsollen@google.com> |
Skia Merge (revision 3312)
This CL also includes changes made to Android's copy of
Skia in their J release branch.
Change-Id: Ib2baecf48004951a3ad4a1574cdc38790c814cbc
/external/skia/include/core/SkThread_platform.h
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| 1cab2921ab279367f8206cdadc9259d12e603548 |
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18-Jan-2012 |
Derek Sollenberger <djsollen@google.com> |
Skia merge (revision 3022)
This CL has companion changes to account for API updates in...
(1) frameworks/base
(2) external/webkit
Change-Id: Ibb989e76e8bd24313849f9631dbef42cdef9eb7d
/external/skia/include/core/SkThread_platform.h
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| 35e2e62b55598210f6999fc2ea26ff8f41446ffe |
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16-May-2011 |
Derek Sollenberger <djsollen@google.com> |
Skia Merge (revision 1327)
Change-Id: I46f41274d07a3d7bac4728f8841c7f5e89dc9181
/external/skia/include/core/SkThread_platform.h
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| 40528743dbb9ce7f39f093e0cdc47849ac8887cf |
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07-Jan-2011 |
Derek Sollenberger <djsollen@google.com> |
Skia Merge (revision 808)
This merge has companion changes in the following projects in order
to be compatible with changes to skia interfaces and practices:
1. /frameworks/base
2. /external/webkit
Change-Id: I54092971305579e81a8fdb27bbe04ec340792e3b
/external/skia/include/core/SkThread_platform.h
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| 0910916c0f7b951ee55c4b7c6358295b9bca0565 |
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04-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //depot/cupcake/@135843
/external/skia/include/core/SkThread_platform.h
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| 6eb364108744656fcd23a96a478aa772cd4e85bc |
|
04-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //depot/cupcake/@135843
/external/skia/include/core/SkThread_platform.h
|
| 03202c9c3dfbf8c4feb0a1ee9b3680817e633f58 |
|
10-Jan-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //branches/cupcake/...@125939
/external/skia/include/core/SkThread_platform.h
|