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Commit 40a80c8b authored by Rick Yiu's avatar Rick Yiu Committed by Automerger Merge Worker
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Merge changes from topic "revert_androidSetThreadPriority_api" am: 2b1c37a3... 

Merge changes from topic "revert_androidSetThreadPriority_api" am: 2b1c37a3 am: 75595e00 am: 9bb11eb7 am: ae8504a4

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1440132

Change-Id: I32637a7e8547bce00a68ed0bde706d767b9c21bf
parents 6ec7e3a5 ae8504a4

libutils/Threads.cpp

+12 −23
Original line number Diff line number Diff line
@@ -302,8 +302,8 @@ void androidSetCreateThreadFunc(android_create_thread_fn func) 
}



#if defined(__ANDROID__)

namespace {

int androidSetThreadPriorityInternal(pid_t tid, int pri, bool change_policy) {

int androidSetThreadPriority(pid_t tid, int pri)

{

    int rc = 0;

    int lasterr = 0;

    int curr_pri = getpriority(PRIO_PROCESS, tid);
@@ -312,7 +312,6 @@ int androidSetThreadPriorityInternal(pid_t tid, int pri, bool change_policy) { 
        return rc;

    }



    if (change_policy) {

    if (pri >= ANDROID_PRIORITY_BACKGROUND) {

        rc = SetTaskProfiles(tid, {"SCHED_SP_BACKGROUND"}, true) ? 0 : -1;

    } else if (curr_pri >= ANDROID_PRIORITY_BACKGROUND) {
@@ -325,7 +324,6 @@ int androidSetThreadPriorityInternal(pid_t tid, int pri, bool change_policy) { 
    if (rc) {

        lasterr = errno;

    }

    }



    if (setpriority(PRIO_PROCESS, tid, pri) < 0) {

        rc = INVALID_OPERATION;
@@ -335,15 +333,6 @@ int androidSetThreadPriorityInternal(pid_t tid, int pri, bool change_policy) { 


    return rc;

}

}  // namespace



int androidSetThreadPriority(pid_t tid, int pri) {

    return androidSetThreadPriorityInternal(tid, pri, true);

}



int androidSetThreadPriorityAndPolicy(pid_t tid, int pri, bool change_policy) {

    return androidSetThreadPriorityInternal(tid, pri, change_policy);

}



int androidGetThreadPriority(pid_t tid) {

    return getpriority(PRIO_PROCESS, tid);

libutils/include/utils/AndroidThreads.h

+0 −5
Original line number Diff line number Diff line
@@ -78,13 +78,8 @@ extern void androidSetCreateThreadFunc(android_create_thread_fn func); 
// should be one of the ANDROID_PRIORITY constants.  Returns INVALID_OPERATION

// if the priority set failed, else another value if just the group set failed;

// in either case errno is set.  Thread ID zero means current thread.

// This is equivalent to androidSetThreadPriorityAndPolicy(tid, prio, true);

extern int androidSetThreadPriority(pid_t tid, int prio);



// Parameter "change_policy" indicates if sched policy should be changed. It needs

// not be checked again if the change is done elsewhere like activity manager.

extern int androidSetThreadPriorityAndPolicy(pid_t tid, int prio, bool change_policy);



// Get the current priority of a particular thread. Returns one of the

// ANDROID_PRIORITY constants or a negative result in case of error.

extern int androidGetThreadPriority(pid_t tid);