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Commit b2cac4ff authored by Glenn Kasten's avatar Glenn Kasten
Browse files

Continue removing property debug.sys.noschedgroups 

Also 0 means gettid() for get_sched_policy() and set_sched_policy().

Change-Id: Ic12edc3df6c9b3e99eae5cffaf9f6fe56cf14043
parent 7e4eb72a

libs/utils/Threads.cpp

+8 −37
Original line number Diff line number Diff line
@@ -68,20 +68,6 @@ using namespace android; 


typedef void* (*android_pthread_entry)(void*);



static pthread_once_t gDoSchedulingGroupOnce = PTHREAD_ONCE_INIT;

static bool gDoSchedulingGroup = true;



static void checkDoSchedulingGroup(void) {

    char buf[PROPERTY_VALUE_MAX];

    int len = property_get("debug.sys.noschedgroups", buf, "");

    if (len > 0) {

        int temp;

        if (sscanf(buf, "%d", &temp) == 1) {

            gDoSchedulingGroup = temp == 0;

        }

    }

}



struct thread_data_t {

    thread_func_t   entryFunction;

    void*           userData;
@@ -97,15 +83,10 @@ struct thread_data_t { 
        char * name = t->threadName;

        delete t;

        setpriority(PRIO_PROCESS, 0, prio);

        pthread_once(&gDoSchedulingGroupOnce, checkDoSchedulingGroup);

        if (gDoSchedulingGroup) {

        if (prio >= ANDROID_PRIORITY_BACKGROUND) {

                set_sched_policy(androidGetTid(), SP_BACKGROUND);

            } else if (prio > ANDROID_PRIORITY_AUDIO) {

                set_sched_policy(androidGetTid(), SP_FOREGROUND);

            set_sched_policy(0, SP_BACKGROUND);

        } else {

                // defaults to that of parent, or as set by requestPriority()

            }

            set_sched_policy(0, SP_FOREGROUND);

        }

        

        if (name) {
@@ -333,20 +314,10 @@ int androidSetThreadPriority(pid_t tid, int pri) 
#if defined(HAVE_PTHREADS)

    int lasterr = 0;



    pthread_once(&gDoSchedulingGroupOnce, checkDoSchedulingGroup);

    if (gDoSchedulingGroup) {

        // set_sched_policy does not support tid == 0

        int policy_tid;

        if (tid == 0) {

            policy_tid = androidGetTid();

        } else {

            policy_tid = tid;

        }

    if (pri >= ANDROID_PRIORITY_BACKGROUND) {

            rc = set_sched_policy(policy_tid, SP_BACKGROUND);

        rc = set_sched_policy(tid, SP_BACKGROUND);

    } else if (getpriority(PRIO_PROCESS, tid) >= ANDROID_PRIORITY_BACKGROUND) {

            rc = set_sched_policy(policy_tid, SP_FOREGROUND);

        }

        rc = set_sched_policy(tid, SP_FOREGROUND);

    }



    if (rc) {