Add a method to Process to get uid for a pid. (819f928f) · Commits · e / os / android_frameworks_base

core/java/android/os/Process.java

+15 −1

Original line number	Diff line number	Diff line
		@@ -574,6 +574,20 @@ public class Process {
		*/
		public static final native int getGidForName(String name);

		/**
		* Returns a uid for a currently running process.
		* @param pid the process id
		* @return the uid of the process, or -1 if the process is not running.
		* @hide pending API council review
		*/
		public static final int getUidForPid(int pid) {
		String[] procStatusLabels = { "Uid:" };
		long[] procStatusValues = new long[1];
		procStatusValues[0] = -1;
		Process.readProcLines("/proc/" + pid + "/status", procStatusLabels, procStatusValues);
		return (int) procStatusValues[0];
		}

		/**
		* Set the priority of a thread, based on Linux priorities.
		*

+2 −4

Original line number	Diff line number	Diff line
		@@ -2836,14 +2836,12 @@ public final class BatteryStatsImpl extends BatteryStats {
		* @param name process name
		* @return the statistics object for the process
		*/
		public Uid.Proc getProcessStatsLocked(String name) {
		public Uid.Proc getProcessStatsLocked(String name, int pid) {
		int uid;
		if (mUidCache.containsKey(name)) {
		uid = mUidCache.get(name);
		} else {
		// TODO: Find the actual uid from /proc/pid/status. For now use the hashcode of the
		// process name
		uid = name.hashCode();
		uid = Process.getUidForPid(pid);
		mUidCache.put(name, uid);
		}
		Uid u = getUidStatsLocked(uid);

+2 −3

Original line number	Diff line number	Diff line
		@@ -1518,8 +1518,7 @@ public final class ActivityManagerService extends ActivityManagerNative implemen
		}
		}

		final BatteryStatsImpl bstats =
		(BatteryStatsImpl) mBatteryStatsService.getActiveStatistics();
		final BatteryStatsImpl bstats = mBatteryStatsService.getActiveStatistics();
		synchronized(bstats) {
		synchronized(mPidsSelfLocked) {
		if (haveNewCpuStats) {
		@@ -1534,7 +1533,7 @@ public final class ActivityManagerService extends ActivityManagerNative implemen
		ps.addCpuTimeLocked(st.rel_utime, st.rel_stime);
		} else {
		BatteryStatsImpl.Uid.Proc ps =
		bstats.getProcessStatsLocked(st.name);
		bstats.getProcessStatsLocked(st.name, st.pid);
		if (ps != null) {
		ps.addCpuTimeLocked(st.rel_utime, st.rel_stime);
		}