Always set the scheduling group when starting a new thread. (9c82c48d) · Commits · e / os / android_frameworks_native-old

libs/utils/Threads.cpp

+23 −16

Original line number	Diff line number	Diff line
		@@ -65,6 +65,20 @@ 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;
		@@ -80,6 +94,15 @@ 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 {
		set_sched_policy(androidGetTid(), SP_FOREGROUND);
		}
		}

		if (name) {
		#if defined(HAVE_PRCTL)
		// Mac OS doesn't have this, and we build libutil for the host too
		@@ -281,22 +304,6 @@ pid_t androidGetTid()
		#endif
		}

		#if defined(HAVE_PTHREADS)
		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;
		}
		}
		}
		#endif

		int androidSetThreadSchedulingGroup(pid_t tid, int grp)
		{
		if (grp > ANDROID_TGROUP_MAX \|\| grp < 0) {