Merge "ProcessInfoService: Add support for oom score query" (44c186c9) · Commits · e / devices / smdk4412 / android_frameworks_native

include/binder/ProcessInfoService.h

+17 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,8 @@ class ProcessInfoService : public Singleton<ProcessInfoService> {
		ProcessInfoService();

		status_t getProcessStatesImpl(size_t length, /in/ int32_t* pids, /out/ int32_t* states);
		status_t getProcessStatesScoresImpl(size_t length, /in/ int32_t* pids,
		/out/ int32_t* states, /out/ int32_t *scores);
		void updateBinderLocked();

		static const int BINDER_ATTEMPT_LIMIT = 5;
		@@ -55,6 +57,21 @@ public:
		/out/ states);
		}

		/**
		* For each PID in the given "pids" input array, write the current process state
		* for that process into the "states" output array, or
		* ActivityManager.PROCESS_STATE_NONEXISTENT * to indicate that no process with the given PID
		* exists. OoM scores will also be written in the "scores" output array.
		* Please also note that clients calling this method need to have
		* "GET_PROCESS_STATE_AND_OOM_SCORE" permission.
		*
		* Returns NO_ERROR if this operation was successful, or a negative error code otherwise.
		*/
		static status_t getProcessStatesScoresFromPids(size_t length, /in/ int32_t* pids,
		/out/ int32_t* states, /out/ int32_t *scores) {
		return ProcessInfoService::getInstance().getProcessStatesScoresImpl(
		length, /in/ pids, /out/ states, /out/ scores);
		}
		};

		// ----------------------------------------------------------------------

+34 −0

Original line number	Diff line number	Diff line
		@@ -57,6 +57,40 @@ status_t ProcessInfoService::getProcessStatesImpl(size_t length, /in/ int32_t*
		return TIMED_OUT;
		}

		status_t ProcessInfoService::getProcessStatesScoresImpl(size_t length,
		/in/ int32_t* pids, /out/ int32_t* states,
		/out/ int32_t *scores) {
		status_t err = NO_ERROR;
		sp<IProcessInfoService> pis;
		mProcessInfoLock.lock();
		pis = mProcessInfoService;
		mProcessInfoLock.unlock();

		for (int i = 0; i < BINDER_ATTEMPT_LIMIT; i++) {

		if (pis != NULL) {
		err = pis->getProcessStatesAndOomScoresFromPids(length,
		/in/ pids, /out/ states, /out/ scores);
		if (err == NO_ERROR) return NO_ERROR; // success
		if (IInterface::asBinder(pis)->isBinderAlive()) return err;
		}
		sleep(1);

		mProcessInfoLock.lock();
		if (pis == mProcessInfoService) {
		updateBinderLocked();
		}
		pis = mProcessInfoService;
		mProcessInfoLock.unlock();
		}

		ALOGW("%s: Could not retrieve process states and scores "
		"from ProcessInfoService after %d retries.", __FUNCTION__,
		BINDER_ATTEMPT_LIMIT);

		return TIMED_OUT;
		}

		void ProcessInfoService::updateBinderLocked() {
		const sp<IServiceManager> sm(defaultServiceManager());
		if (sm != NULL) {