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65 Commits

Author SHA1 Message Date
reed@google.com
6be31f42ca remove SK_SUPPORT_LEGACY_ONLOCKPIXELS completely 
BUG=skia:

Review URL: https://codereview.chromium.org/158893005

git-svn-id: http://skia.googlecode.com/svn/trunk@13382 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-02-10 15:43:29 +00:00
commit-bot@chromium.org
8b0e8ac5f5 Refactor read and write buffers. 
Eliminates SkFlattenable{Read,Write}Buffer, promoting SkOrdered{Read,Write}Buffer
a step each in the hierarchy.

What used to be this:

SkFlattenableWriteBuffer -> SkOrderedWriteBuffer
SkFlattenableReadBuffer  -> SkOrderedReadBuffer
SkFlattenableReadBuffer  -> SkValidatingReadBuffer

is now

SkWriteBuffer
SkReadBuffer -> SkValidatingReadBuffer

Benefits:
  - code is simpler, names are less wordy
  - the generic SkFlattenableFooBuffer code in SkPaint was incorrect; removed
  - write buffers are completely devirtualized, important for record speed

This refactoring was mostly mechanical.  You aren't going to find anything
interesting in files with less than 10 lines changed.

BUG=skia:
R=reed@google.com, scroggo@google.com, djsollen@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/134163010

git-svn-id: http://skia.googlecode.com/svn/trunk@13245 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-30 18:58:24 +00:00
reed@google.com
c1587f94a7 change setAlphaType to not modify the pixelref's genID 
BUG=skia:
R=bsalomon@google.com, halcanary@google.com

Review URL: https://codereview.chromium.org/137263009

git-svn-id: http://skia.googlecode.com/svn/trunk@13219 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-28 16:05:39 +00:00
commit-bot@chromium.org
0e8d0d6cdc add optional SkAlphaType parameter to notifyPixelsChanged 
R=scroggo@google.com, halcanary@google.com, robertphillips@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/147213002

git-svn-id: http://skia.googlecode.com/svn/trunk@13192 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-27 15:41:07 +00:00
reed@google.com
9ebcac5463 add installPixels 
BUG=skia:
R=halcanary@google.com

Review URL: https://codereview.chromium.org/143073008

git-svn-id: http://skia.googlecode.com/svn/trunk@13174 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-24 18:53:42 +00:00
reed@google.com
bf0001d047 remove remaining references to Sk64 (obsolete) 
BUG=

Review URL: https://codereview.chromium.org/136673002

git-svn-id: http://skia.googlecode.com/svn/trunk@13042 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-13 14:53:55 +00:00
reed@google.com
672588b684 change offset to xy for pixelref subsetting 
BUG=
R=scroggo@google.com

Review URL: https://codereview.chromium.org/105893012

git-svn-id: http://skia.googlecode.com/svn/trunk@12958 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-08 15:42:01 +00:00
reed@google.com
d0419b1fe7 Revert "Revert "Revert "Revert of https://codereview.chromium.org/110593003/""" 
This reverts commit aaa89649590323fe40f52439d9a9a3376bb3b8ae.

BUG=

Review URL: https://codereview.chromium.org/123223007

git-svn-id: http://skia.googlecode.com/svn/trunk@12910 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-06 17:08:27 +00:00
reed@google.com
7627c657b0 add rowBytes param to setPreLock, in prep for onNewLockPixels change 
need _win.cc change from https://codereview.chromium.org/124503002/ when this lands in chrome

R=robertphillips@google.com

Review URL: https://codereview.chromium.org/125063002

git-svn-id: http://skia.googlecode.com/svn/trunk@12907 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-06 15:01:48 +00:00
reed@google.com
ba82bd11e2 Revert "Revert "Revert of https://codereview.chromium.org/110593003/"" 
This reverts commit 0fef787f33aa38109a0c8427e0098d997efdd5ff.

failed in chrome: https://codereview.chromium.org/124503002/

Review URL: https://codereview.chromium.org/105523008

git-svn-id: http://skia.googlecode.com/svn/trunk@12906 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-06 13:34:39 +00:00
skia.committer@gmail.com
98272d9142 Sanitizing source files in Housekeeper-Nightly 
git-svn-id: http://skia.googlecode.com/svn/trunk@12901 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-04 07:01:40 +00:00
reed@google.com
927138977f Revert "Revert of https://codereview.chromium.org/110593003/" 
This reverts commit c7abb25b25ba8b97948371d2bf0a2e3e78468f73.

and fixes the ashmem break

BUG=

Review URL: https://codereview.chromium.org/119753010

git-svn-id: http://skia.googlecode.com/svn/trunk@12887 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-03 17:58:57 +00:00
commit-bot@chromium.org
27f890219b Revert of https://codereview.chromium.org/110593003/ 
Reason for revert: SkImageRef_ashmem doesn't compile

R=halcanary@google.com, scroggo@google.com
TBR=halcanary@google.com, scroggo@google.com
NOTREECHECKS=true
NOTRY=true
BUG=

Author: reed@google.com

Review URL: https://codereview.chromium.org/119753009

git-svn-id: http://skia.googlecode.com/svn/trunk@12884 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-03 16:32:45 +00:00
reed@google.com
f1ce05288a Add onNewLockPixels, that returns rowbytes and relies on info in pixelref 
This reverts commit 890a6ec633c1f54891104a072a8964b4c2c81af9.

BUG=
R=scroggo@google.com

Review URL: https://codereview.chromium.org/110593003

git-svn-id: http://skia.googlecode.com/svn/trunk@12883 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-03 16:22:48 +00:00
reed@google.com
33cc989f23 remove SK_SUPPORT_LEGACY_PIXELREF_CONSTRUCTOR and make fInfo const 
BUG=
R=halcanary@google.com

Review URL: https://codereview.chromium.org/107373004

git-svn-id: http://skia.googlecode.com/svn/trunk@12863 2bbb7eff-a529-9590-31e7-b0007b416f81
 2014-01-02 18:07:46 +00:00
skia.committer@gmail.com
96f5fa02e9 Sanitizing source files in Housekeeper-Nightly 
git-svn-id: http://skia.googlecode.com/svn/trunk@12685 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-16 07:01:40 +00:00
reed@google.com
bf790232f6 Update all callsites to use info for pixelrefs 
#define SK_SUPPORT_LEGACY_PIXELREF_CONSTRUCTOR in chrome to keep old API signature (for now)

BUG=
R=scroggo@google.com

Review URL: https://codereview.chromium.org/100723005

git-svn-id: http://skia.googlecode.com/svn/trunk@12677 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-13 19:45:58 +00:00
robertphillips@google.com
0daa1adb03 Reverting r12665 & r12666 (Remove duplicate impl for SkImageInfo flattening) due to Chromium/Blink compilation errors 
https://codereview.chromium.org/112603003/



git-svn-id: http://skia.googlecode.com/svn/trunk@12667 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-13 15:24:37 +00:00
reed@google.com
93b40594b7 Remvoe duplicate impl for SkImageInfo flattening 
Add onNewLockPixels

This reverts commit bb8eff6a70c52b7644391cfd4f4d21bf7294a6bf.

BUG=

Review URL: https://codereview.chromium.org/111323005

git-svn-id: http://skia.googlecode.com/svn/trunk@12665 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-13 14:18:14 +00:00
reed@google.com
c83a91f472 Revert "Revert of https://codereview.chromium.org/112783004/" 
This reverts commit 3293fe57a7507541e9040eab880dcd82c43881f4.

Conflicts:
	src/core/SkScaledImageCache.cpp

BUG=

Review URL: https://codereview.chromium.org/108613005

git-svn-id: http://skia.googlecode.com/svn/trunk@12663 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-13 13:41:14 +00:00
commit-bot@chromium.org
281713e4d4 Revert of https://codereview.chromium.org/112783004/ 
Reason for revert: Failing assert on Android

R=scroggo@google.com, halcanary@google.com, reed@google.com, rmistry@google.com
TBR=halcanary@google.com, reed@google.com, scroggo@google.com
NOTREECHECKS=true
NOTRY=true

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/93673005

git-svn-id: http://skia.googlecode.com/svn/trunk@12646 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-12 18:08:08 +00:00
reed@google.com
772d8524ce ensure that we call onUnlock only when we onLock succeeded 
BUG=
R=halcanary@google.com, scroggo@google.com

Review URL: https://codereview.chromium.org/112783004

git-svn-id: http://skia.googlecode.com/svn/trunk@12642 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-12 16:27:12 +00:00
scroggo@google.com
728f2a6252 Initialize SkPixelRef::fInfo. 
Still will need to make subclasses call the version of the constructor
that initializes fInfo properly.

R=reed@google.com

Review URL: https://codereview.chromium.org/110843006

git-svn-id: http://skia.googlecode.com/svn/trunk@12639 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-12 15:19:30 +00:00
reed@google.com
398337b3a5 Revert "remvoe duplicate impl for SkImageInfo flattening" 
Reason: breaks chrome_mac_tests which still have non-imageinfo constructors

This reverts commit a06b8cf60b39bda93e9ef1a73579007b2b930d29.

BUG=

Review URL: https://codereview.chromium.org/103033005

git-svn-id: http://skia.googlecode.com/svn/trunk@12631 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-11 21:22:39 +00:00
reed@google.com
a0d183d891 Revert "Revert of https://codereview.chromium.org/108773003/" 
This reverts commit 947e6a3142af66b750f1247ef933b11ed8455dd4.

BUG=

Review URL: https://codereview.chromium.org/112963003

git-svn-id: http://skia.googlecode.com/svn/trunk@12630 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-11 21:15:58 +00:00
commit-bot@chromium.org
ff9c6c92e5 Revert of https://codereview.chromium.org/108773003/ 
Reason for revert: breaks chrome-mac-tests

TBR=
NOTREECHECKS=true
NOTRY=true

Author: reed@google.com

Review URL: https://codereview.chromium.org/113193003

git-svn-id: http://skia.googlecode.com/svn/trunk@12629 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-11 20:55:41 +00:00
reed@google.com
f3aead2829 remvoe duplicate impl for SkImageInfo flattening 
Revert "Revert "PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap.""""""

This reverts commit eabd6b2ed4e494b323c08f32358f45950a0368c3.

BUG=

Review URL: https://codereview.chromium.org/108773003

git-svn-id: http://skia.googlecode.com/svn/trunk@12624 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-11 18:38:46 +00:00
reed@google.com
6a32add491 Revert "PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap.""""" 
This reverts commit d08eca87a0bef10112a211de540f89656a80b86a.

BUG=

Review URL: https://codereview.chromium.org/108303003

git-svn-id: http://skia.googlecode.com/svn/trunk@12623 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-11 18:19:10 +00:00
reed@google.com
6965a0a2df PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap."""" 
BUG=

Review URL: https://codereview.chromium.org/110503003

git-svn-id: http://skia.googlecode.com/svn/trunk@12622 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-11 18:04:56 +00:00
reed@google.com
9230ea2971 make info real in SkPixelRef, and add bitmap::asImageInfo 
BUG=
R=scroggo@google.com

Review URL: https://codereview.chromium.org/108663004

git-svn-id: http://skia.googlecode.com/svn/trunk@12586 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-09 22:01:03 +00:00
reed@google.com
b0eb102ed6 remove explicit when we have 2 args 
git-svn-id: http://skia.googlecode.com/svn/trunk@12553 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-06 22:16:10 +00:00
reed@google.com
f1715706f7 add SK_SUPPORT_LEGACY_PIXELREF_CONSTRUCTOR, initially always on 
BUG=

Review URL: https://codereview.chromium.org/106183007

git-svn-id: http://skia.googlecode.com/svn/trunk@12552 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-06 22:07:17 +00:00
reed@google.com
2ebc10dd12 Revert "Revert "Revert "PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap.""" 
This reverts commit 5f035e90d6dea0139a4f204b634e7b7b3b4976d7.

Reverting because it breaks chrome/blink due to new SkPixelRef constructor arg.

BUG=

Review URL: https://codereview.chromium.org/108993002

git-svn-id: http://skia.googlecode.com/svn/trunk@12551 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-06 21:43:05 +00:00
reed@google.com
473f0aa2bb Revert "Revert "PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap."" 
This reverts commit 4174afb18a9746bbad2a06c0ec2d4ad35f72d790.

BUG=

Review URL: https://codereview.chromium.org/108723003

git-svn-id: http://skia.googlecode.com/svn/trunk@12547 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-06 20:31:45 +00:00
reed@google.com
5b132b28da Revert "PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap." 
This reverts commit 154e08b2f5904ef533da694e3510befcb9a3f3e2.

revert due to warnings

Review URL: https://codereview.chromium.org/108513003

git-svn-id: http://skia.googlecode.com/svn/trunk@12538 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-06 18:51:08 +00:00
reed@google.com
3e89524e74 PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap. 
R=mtklein@google.com, scroggo@google.com

Review URL: https://codereview.chromium.org/68973005

git-svn-id: http://skia.googlecode.com/svn/trunk@12537 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-06 18:41:33 +00:00
commit-bot@chromium.org
cd3b15ca63 Fixed bad bitmap size crashes 
There were 2 issues :
1 ) If the size of an SkBitmap's underlying SkPixelRef's alocated memory is too small to fit the bitmap, then the deserialization will now check this and set an error appropriately.
2 ) If a device fails to allocate its pixels, the device will be deleted and NULL will be returned to avoid attempting to draw on a bad device.

BUG=
R=senorblanco@chromium.org, reed@google.com, sugoi@google.com, halcanary@google.com, mtklein@google.com

Author: sugoi@chromium.org

Review URL: https://codereview.chromium.org/92793002

git-svn-id: http://skia.googlecode.com/svn/trunk@12484 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-12-04 17:06:49 +00:00
commit-bot@chromium.org
50a3043194 We want to give SkPixelRef a way to signal over to GrResourceCache that it's become pointless to keep around textures based on that SkPixelRef when its pixels change, so that it can be a good citizen and free those textures. 
This adds an invalidation listener mechanism to SkPixelRef to let it send this message while still staying ignorant of who's listening.

These messages are tricky to deliver.  The SkPixelRefs they originates from and the GrResourceCaches they ultimately end up at may be on different threads; neither class is threadsafe; their object lifetimes are totally independent; it's a many-senders-to-many-receivers relation; and neither codebase should really know about the other.

So I've added a per-message-type global message bus to broadcast messages to threadsafe inboxes.  Anyone can post() a message, which will show up in all the inboxes of that type, read whenever the inbox's owner calls poll().  The implementation is _dumb_; it can be improved in several dimensions (inbox size limits, lock-free message delivery) if we find the need.

I took some care to make sure not to send the invalidation message for any SkPixelRef that's sharing a generation ID with another SkPixelRef.

BUG=
R=bsalomon@google.com, scroggo@google.com, reed@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/26734003

git-svn-id: http://skia.googlecode.com/svn/trunk@11949 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-10-24 17:44:27 +00:00
commit-bot@chromium.org
c0b7e10c6a Initial error handling code 
I made it as simple as possible. The impact seems minimal and it should do what's necessary to make this code secure.

BUG=

Committed: http://code.google.com/p/skia/source/detail?r=11247

R=reed@google.com, scroggo@google.com, djsollen@google.com, sugoi@google.com, bsalomon@google.com, mtklein@google.com, senorblanco@google.com, senorblanco@chromium.org

Author: sugoi@chromium.org

Review URL: https://codereview.chromium.org/23021015

git-svn-id: http://skia.googlecode.com/svn/trunk@11922 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-10-23 17:06:21 +00:00
reed@google.com
cee9dcb837 start to remove lockPixels from bitmapshader 
BUG=
R=scroggo@google.com

Review URL: https://codereview.chromium.org/23591030

git-svn-id: http://skia.googlecode.com/svn/trunk@11258 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-09-13 16:04:49 +00:00
commit-bot@chromium.org
b8d00db075 Change undefined SkGpuRenderTarget and SkGpuTexture forward declares to GrRenderTarget and GrTexture. 
R=robertphillips@google.com, reed@google.com

Author: bsalomon@google.com

Review URL: https://chromiumcodereview.appspot.com/17269003

git-svn-id: http://skia.googlecode.com/svn/trunk@9775 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-06-26 19:18:23 +00:00
djsollen@google.com
528a556514 Fix android errors when unflattening an SkImageRef_ashmem object. 
Review URL: https://codereview.appspot.com/7228071

git-svn-id: http://skia.googlecode.com/svn/trunk@7514 2bbb7eff-a529-9590-31e7-b0007b416f81
 2013-02-01 15:57:13 +00:00
reed@google.com
ea033606a0 add per-draw checks for lockcounts 
Review URL: https://codereview.appspot.com/6943056

git-svn-id: http://skia.googlecode.com/svn/trunk@6815 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-12-14 13:13:55 +00:00
reed@google.com
2a3f08b0a7 add debugging flag SK_IGNORE_PIXELREF_SETPRELOCKED for pixelref locks (disabled) 
git-svn-id: http://skia.googlecode.com/svn/trunk@6800 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-12-13 21:41:00 +00:00
scroggo@google.com
a2a3192847 Fix some extract subset bugs. 
In SkBitmap::extractSubset, perform a deepCopy, if the pixelRef supports it.

Fixes a bug in the 'extractbitmap' gm, which attempts to draw a subset of a texture backed bitmap (if the canvas is really an SkGpuCanvas).

Also fix some bugs that happen when there is a pixel offset. These fixes get bypassed by the deepCopy, but a user can still set a pixel offset manually.

When copying GPU backed bitmap with a pixel offset, copy the offset.

If the new config is the same as the old, copy fRowBytes as well.

Add a function to SkBitmap.cpp (getUpperLeftFromOffset) to find the x,y coordinate to use when copying to a new config.

Fix a bug where readPixels copied to the correct desired config and we were setting the generation ID to match even though the desired config was not the same as the original config (caught by my new tests!).

Add some tests to verify the correct behavior.

Review URL: https://codereview.appspot.com/6839043

git-svn-id: http://skia.googlecode.com/svn/trunk@6710 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-12-07 19:14:45 +00:00
reed@google.com
eb776128f5 add query to pixelref for its encoded data (if it has any) 
Review URL: https://codereview.appspot.com/6891047

git-svn-id: http://skia.googlecode.com/svn/trunk@6689 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-12-06 14:26:02 +00:00
rmistry@google.com
fbfcd56021 Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 
This CL is part I of IV (I broke down the 1280 files into 4 CLs).
Review URL: https://codereview.appspot.com/6485054

git-svn-id: http://skia.googlecode.com/svn/trunk@5262 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-08-23 18:09:54 +00:00
scroggo@google.com
d5764e8ab7 When copying a bitmap, copy the generation ID. 
Review URL: https://codereview.appspot.com/6462084

git-svn-id: http://skia.googlecode.com/svn/trunk@5227 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-08-22 15:00:05 +00:00
robertphillips@google.com
0456e0b7b8 Added Inst counting to SkFlattenable-derived classes 
http://codereview.appspot.com/6355043/



git-svn-id: http://skia.googlecode.com/svn/trunk@4359 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-06-27 14:03:26 +00:00
reed@google.com
ff0da4ff48 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.
Review URL: https://codereview.appspot.com/6199075

git-svn-id: http://skia.googlecode.com/svn/trunk@3985 2bbb7eff-a529-9590-31e7-b0007b416f81
 2012-05-17 13:14:52 +00:00