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Define priority for video threads

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Video threads have soft realtime requirements that
must be met in order to maintain reliable frame delivery
even when the system is under high load. This CL
defines a new priority that can be used by video
threads, enabling them to be scheduled appropriately
relative to other system threads.

Change-Id: Idd57207e30309dfdff24389db0acf107532f9e5a
related-to-bug:63898080
This commit is contained in:
Jeff Tinker 2017-09-07 16:14:07 -07:00
parent 8f63b6cfca
commit 17ffcc4280
1 changed files with 3 additions and 0 deletions
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3
libsystem/include/system/thread_defs.h
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@ -55,6 +55,9 @@ enum {
/* ui service treads might want to run at a urgent display (uncommon) */ /* ui service treads might want to run at a urgent display (uncommon) */
ANDROID_PRIORITY_URGENT_DISPLAY = HAL_PRIORITY_URGENT_DISPLAY, ANDROID_PRIORITY_URGENT_DISPLAY = HAL_PRIORITY_URGENT_DISPLAY,
/* all normal video threads */
ANDROID_PRIORITY_VIDEO = -10,
/* all normal audio threads */ /* all normal audio threads */
ANDROID_PRIORITY_AUDIO = -16, ANDROID_PRIORITY_AUDIO = -16,