Increase UI and RenderThread priority when not using FIFO. am: a636b0b4b6 (40e06f9a) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/ActivityManagerService.java

+19 −3

Original line number	Diff line number	Diff line
		@@ -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");
		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) {
		@@ -20299,6 +20303,12 @@ 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 &&
		@@ -20317,6 +20327,12 @@ 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) {