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Commit f17961cd authored by Benjamin Schwartz's avatar Benjamin Schwartz Committed by Automerger Merge Worker
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Merge "KernelWakelockReader: provide class level lock when updates staleStats"... 

Merge "KernelWakelockReader: provide class level lock when updates staleStats" am: b9f60a53 am: ec137273 am: 7805396e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1534034

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I4ef1ab620b8a56e62c295d081f714de208d9fa57
parents 67fb6f51 7805396e

core/java/com/android/internal/os/KernelWakelockReader.java

+19 −13
Original line number Original line Diff line number Diff line
@@ -78,6 +78,8 @@ public class KernelWakelockReader { 
        boolean useSystemSuspend = (new File(sSysClassWakeupDir)).exists();

        boolean useSystemSuspend = (new File(sSysClassWakeupDir)).exists();





        if (useSystemSuspend) {

        if (useSystemSuspend) {

            // static read/write lock protection for sKernelWakelockUpdateVersion

            synchronized (KernelWakelockReader.class) {

                // Get both kernel and native wakelock stats from SystemSuspend

                // Get both kernel and native wakelock stats from SystemSuspend

                updateVersion(staleStats);

                updateVersion(staleStats);

                if (getWakelockStatsFromSystemSuspend(staleStats) == null) {

                if (getWakelockStatsFromSystemSuspend(staleStats) == null) {
@@ -85,6 +87,7 @@ public class KernelWakelockReader { 
                    return null;

                    return null;

                }

                }

                return removeOldStats(staleStats);

                return removeOldStats(staleStats);

            }

        } else {

        } else {

            Arrays.fill(mKernelWakelockBuffer, (byte) 0);

            Arrays.fill(mKernelWakelockBuffer, (byte) 0);

            int len = 0;

            int len = 0;
@@ -141,6 +144,8 @@ public class KernelWakelockReader { 
                }

                }

            }

            }





            // static read/write lock protection for sKernelWakelockUpdateVersion

            synchronized (KernelWakelockReader.class) {

                updateVersion(staleStats);

                updateVersion(staleStats);

                // Get native wakelock stats from SystemSuspend

                // Get native wakelock stats from SystemSuspend

                if (getWakelockStatsFromSystemSuspend(staleStats) == null) {

                if (getWakelockStatsFromSystemSuspend(staleStats) == null) {
@@ -151,6 +156,7 @@ public class KernelWakelockReader { 
                return removeOldStats(staleStats);

                return removeOldStats(staleStats);

            }

            }

        }

        }

    }





    /**

    /**

     * Attempt to wait for suspend_control service if not immediately available.

     * Attempt to wait for suspend_control service if not immediately available.