Android/frameworks_base
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Increase UI and RenderThread priority when not using FIFO.

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bug 30441279

Change-Id: I5714179236af59ce79dbe118c7870d5f1771168a
This commit is contained in:
Tim Murray
2016-07-27 15:07:00 -07:00
parent 9f3930d3f7
commit a636b0b4b6
1 changed files with 19 additions and 3 deletions
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22
services/core/java/com/android/server/am/ActivityManagerService.java
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@@ -12585,7 +12585,7 @@ public final class ActivityManagerService extends ActivityManagerNative
synchronized (mPidsSelfLocked) {
int pid = Binder.getCallingPid();
proc = mPidsSelfLocked.get(pid);
if (mUseFifoUiScheduling && proc != null && proc.renderThreadTid == 0 && tid > 0) {
if (proc != null && proc.renderThreadTid == 0 && tid > 0) {
// ensure the tid belongs to the process
if (!Process.isThreadInProcess(pid, tid)) {
throw new IllegalArgumentException(
@@ -12598,8 +12598,12 @@ public final class ActivityManagerService extends ActivityManagerNative
// promote to FIFO now
if (proc.curSchedGroup == ProcessList.SCHED_GROUP_TOP_APP) {
if (DEBUG_OOM_ADJ) Slog.d("UI_FIFO", "Promoting " + tid + "out of band");
Process.setThreadScheduler(proc.renderThreadTid,
Process.SCHED_FIFO | Process.SCHED_RESET_ON_FORK, 1);
if (mUseFifoUiScheduling) {
Process.setThreadScheduler(proc.renderThreadTid,
Process.SCHED_FIFO | Process.SCHED_RESET_ON_FORK, 1);
} else {
Process.setThreadPriority(proc.renderThreadTid, -10);
}
}
} else {
if (DEBUG_OOM_ADJ) {
@@ -20294,6 +20298,12 @@ public final class ActivityManagerService extends ActivityManagerNative
Slog.d("UI_FIFO", "Not setting RenderThread TID");
}
}
} else {
// Boost priority for top app UI and render threads
Process.setThreadPriority(app.pid, -10);
if (app.renderThreadTid != 0) {
Process.setThreadPriority(app.renderThreadTid, -10);
}
}
}
} else if (oldSchedGroup == ProcessList.SCHED_GROUP_TOP_APP &&
@@ -20312,6 +20322,12 @@ public final class ActivityManagerService extends ActivityManagerNative
Process.SCHED_OTHER, 0);
Process.setThreadPriority(app.renderThreadTid, -4);
}
} else {
// Reset priority for top app UI and render threads
Process.setThreadPriority(app.pid, 0);
if (app.renderThreadTid != 0) {
Process.setThreadPriority(app.renderThreadTid, 0);
}
}
}
} catch (Exception e) {