Merge "Improved idle processes killing logic."

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_BROADCAST;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_BROADCAST_BACKGROUND;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_BROADCAST_LIGHT;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_CLEANUP;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_CONFIGURATION;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_LOCKTASK;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LRU;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_MU;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_NETWORK;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_PROVIDER;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_PSS;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_SERVICE;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_SWITCH;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_UID_OBSERVERS;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_USAGE_STATS;

import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_WHITELISTS;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_BACKUP;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_BROADCAST;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_CLEANUP;

import static com.android.server.am.ActivityTaskManagerDebugConfig.POSTFIX_CONFIGURATION;

import static com.android.server.am.ActivityTaskManagerDebugConfig.POSTFIX_LOCKTASK;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_LRU;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_MU;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_NETWORK;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_PROVIDER;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_PSS;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_SERVICE;

import static com.android.server.am.ActivityTaskManagerDebugConfig.POSTFIX_SWITCH;

import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_UID_OBSERVERS;

import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;

import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;

import static com.android.server.am.MemoryStatUtil.MEMORY_STAT_INTERESTING_NATIVE_PROCESSES;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_CLEANUP;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_CONFIGURATION;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_LOCKTASK;

import static com.android.server.am.ActivityTaskManagerDebugConfig.DEBUG_SWITCH;

import static com.android.server.am.ActivityTaskManagerDebugConfig.POSTFIX_CONFIGURATION;

import static com.android.server.am.ActivityTaskManagerDebugConfig.POSTFIX_LOCKTASK;

import static com.android.server.am.ActivityTaskManagerDebugConfig.POSTFIX_SWITCH;

import static com.android.server.am.ActivityTaskManagerService.DUMP_ACTIVITIES_CMD;

import static com.android.server.am.ActivityTaskManagerService.DUMP_ACTIVITIES_SHORT_CMD;

import static com.android.server.am.ActivityTaskManagerService.DUMP_CONTAINERS_CMD;

import static com.android.server.am.ActivityTaskManagerService.KEY_DISPATCHING_TIMEOUT_MS;

import static com.android.server.am.ActivityTaskManagerService.RELAUNCH_REASON_NONE;

import static com.android.server.am.ActivityTaskManagerService.relaunchReasonToString;

import static com.android.server.am.MemoryStatUtil.MEMORY_STAT_INTERESTING_NATIVE_PROCESSES;

import static com.android.server.am.MemoryStatUtil.hasMemcg;

import static com.android.server.am.MemoryStatUtil.readCmdlineFromProcfs;

import static com.android.server.am.MemoryStatUtil.readMemoryStatFromFilesystem;

     */

    private static final long NETWORK_ACCESS_TIMEOUT_DEFAULT_MS = 200; // 0.2 sec

    // The minimum memory growth threshold (in KB) for low RAM devices.

    private static final int MINIMUM_MEMORY_GROWTH_THRESHOLD = 10 * 1000; // 10 MB

    /**

     * State indicating that there is no need for any blocking for network.

     */

            // If at least 1/3 of our time since the last idle period has been spent

            // with RAM low, then we want to kill processes.

            boolean doKilling = lowRamSinceLastIdle > (timeSinceLastIdle/3);

            // If the processes' memory has increased by more than 1% of the total memory,

            // or 10 MB, whichever is greater, then the processes' are eligible to be killed.

            final long totalMemoryInKb = getTotalMemory() / 1000;

            final long memoryGrowthThreshold =

                    Math.max(totalMemoryInKb / 100, MINIMUM_MEMORY_GROWTH_THRESHOLD);

            for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {

                ProcessRecord proc = mLruProcesses.get(i);

                    if (proc.setProcState >= ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE

                            && proc.setProcState <= ActivityManager.PROCESS_STATE_SERVICE) {

                        if (doKilling && proc.initialIdlePss != 0

                                && proc.lastPss > ((proc.initialIdlePss*3)/2)) {

                                && proc.lastPss > ((proc.initialIdlePss * 3) / 2)

                                && proc.lastPss > (proc.initialIdlePss + memoryGrowthThreshold)) {

                            sb = new StringBuilder(128);

                            sb.append("Kill");

                            sb.append(proc.processName);