Cross Reference: /external/skia/dm/

DM is like GM, but multithreaded.  It doesn't do everything GM does.

DM's design is based around Tasks and a TaskRunner.

A Task represents an independent unit of work that might fail.  We make a task
for each GM/configuration pair we want to run.  Tasks can kick off new tasks
themselves.  For example, a CpuTask can kick off a ReplayTask to make sure
recording and playing back an SkPicture gives the same result as direct
rendering.

The TaskRunner runs all tasks on one of two threadpools, whose sizes are
configurable by --cpuThreads and --gpuThreads.  Ideally we'd run these on a
single threadpool but it can swamp the GPU if we shove too much work into it at
once.  --cpuThreads defaults to the number of cores on the machine.
--gpuThreads defaults to 1, but you may find 2 or 4 runs a little faster.

So the main flow of DM is:

    for each GM:
        for each configuration:
            kick off a new task
    < tasks run, maybe fail, and maybe kick off new tasks >
    wait for all tasks to finish
    report failures
Name	Date	Size
..	12-Mar-2015	4 KiB
Android.mk	12-Mar-2015	15.2 KiB
DM.cpp	12-Mar-2015	10.4 KiB
DMBenchTask.cpp	12-Mar-2015	2.7 KiB
DMBenchTask.h	12-Mar-2015	1.7 KiB
DMCpuGMTask.cpp	12-Mar-2015	2.1 KiB
DMCpuGMTask.h	12-Mar-2015	1 KiB
DMExpectations.h	12-Mar-2015	1.2 KiB
DMExpectationsTask.cpp	12-Mar-2015	547
DMExpectationsTask.h	12-Mar-2015	772
DMGpuGMTask.cpp	12-Mar-2015	1.7 KiB
DMGpuGMTask.h	12-Mar-2015	1 KiB
DMGpuSupport.h	12-Mar-2015	1.5 KiB
DMPDFRasterizeTask.cpp	12-Mar-2015	897
DMPDFRasterizeTask.h	12-Mar-2015	942
DMPDFTask.cpp	12-Mar-2015	2.9 KiB
DMPDFTask.h	12-Mar-2015	1.1 KiB
DMPipeTask.cpp	12-Mar-2015	2.3 KiB
DMPipeTask.h	12-Mar-2015	1 KiB
DMQuiltTask.cpp	12-Mar-2015	2 KiB
DMQuiltTask.h	12-Mar-2015	901
DMRecordTask.cpp	12-Mar-2015	1.6 KiB
DMRecordTask.h	12-Mar-2015	937
DMReplayTask.cpp	12-Mar-2015	1.4 KiB
DMReplayTask.h	12-Mar-2015	1,006
DMReporter.cpp	12-Mar-2015	1.2 KiB
DMReporter.h	12-Mar-2015	839
DMSerializeTask.cpp	12-Mar-2015	1.2 KiB
DMSerializeTask.h	12-Mar-2015	753
DMSKPTask.cpp	12-Mar-2015	791
DMSKPTask.h	12-Mar-2015	686
DMTask.cpp	12-Mar-2015	2.3 KiB
DMTask.h	12-Mar-2015	1.7 KiB
DMTaskRunner.cpp	12-Mar-2015	734
DMTaskRunner.h	12-Mar-2015	719
DMTestTask.cpp	12-Mar-2015	1.9 KiB
DMTestTask.h	12-Mar-2015	1.5 KiB
DMUtil.cpp	12-Mar-2015	3.2 KiB
DMUtil.h	12-Mar-2015	1.2 KiB
DMWriteTask.cpp	12-Mar-2015	6.5 KiB
DMWriteTask.h	12-Mar-2015	1.3 KiB
README	12-Mar-2015	1 KiB