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Commit 4a71a738 authored by Chia-I Wu's avatar Chia-I Wu
Browse files

graphics: use FIFO scheduler in IComposer 

Make IComposer default implementation use the same process scheduler
as SurfaceFlinger does.

Bug: 35210697
Test: manual
Change-Id: Ie2ebe1d3fd26505984d9f6c33d63b5db36b0b64a
parent 71b3bafa

graphics/composer/2.1/default/android.hardware.graphics.composer@2.1-service.rc

+1 −0
Original line number Diff line number Diff line
@@ -2,4 +2,5 @@ service hwcomposer-2-1 /system/bin/hw/android.hardware.graphics.composer@2.1-ser 
    class hal

    user system

    group graphics drmrpc readproc

    capabilities SYS_NICE

    onrestart restart surfaceflinger

graphics/composer/2.1/default/service.cpp

+10 −0
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 


#define LOG_TAG "android.hardware.graphics.composer@2.1-service"



#include <sched.h>



#include <android/hardware/graphics/composer/2.1/IComposer.h>



#include <binder/ProcessState.h>
@@ -29,5 +31,13 @@ int main() { 
    android::ProcessState::self()->setThreadPoolMaxThreadCount(4);

    android::ProcessState::self()->startThreadPool();



    // same as SF main thread

    struct sched_param param = {0};

    param.sched_priority = 2;

    if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK,

                &param) != 0) {

        ALOGE("Couldn't set SCHED_FIFO: %d", errno);

    }



    return defaultPassthroughServiceImplementation<IComposer>("hwcomposer");

}