Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge "KernelWakelockReader: provide class level lock when updates staleStats"

Browse Source
This commit is contained in:
Benjamin Schwartz
2020-12-22 17:24:34 +00:00
committed by Gerrit Code Review
parent b8b8a392f3 5886ede607
commit b9f60a53c3
1 changed files with 19 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
core/java/com/android/internal/os/KernelWakelockReader.java
View File

@@ -78,13 +78,16 @@ public class KernelWakelockReader {
boolean useSystemSuspend = (new File(sSysClassWakeupDir)).exists();
if (useSystemSuspend) {
// Get both kernel and native wakelock stats from SystemSuspend
updateVersion(staleStats);
if (getWakelockStatsFromSystemSuspend(staleStats) == null) {
Slog.w(TAG, "Failed to get wakelock stats from SystemSuspend");
return null;
// static read/write lock protection for sKernelWakelockUpdateVersion
synchronized (KernelWakelockReader.class) {
// Get both kernel and native wakelock stats from SystemSuspend
updateVersion(staleStats);
if (getWakelockStatsFromSystemSuspend(staleStats) == null) {
Slog.w(TAG, "Failed to get wakelock stats from SystemSuspend");
return null;
}
return removeOldStats(staleStats);
}
return removeOldStats(staleStats);
} else {
Arrays.fill(mKernelWakelockBuffer, (byte) 0);
int len = 0;
@@ -141,14 +144,17 @@ public class KernelWakelockReader {
}
}
updateVersion(staleStats);
// Get native wakelock stats from SystemSuspend
if (getWakelockStatsFromSystemSuspend(staleStats) == null) {
Slog.w(TAG, "Failed to get Native wakelock stats from SystemSuspend");
// static read/write lock protection for sKernelWakelockUpdateVersion
synchronized (KernelWakelockReader.class) {
updateVersion(staleStats);
// Get native wakelock stats from SystemSuspend
if (getWakelockStatsFromSystemSuspend(staleStats) == null) {
Slog.w(TAG, "Failed to get Native wakelock stats from SystemSuspend");
}
// Get kernel wakelock stats
parseProcWakelocks(mKernelWakelockBuffer, len, wakeup_sources, staleStats);
return removeOldStats(staleStats);
}
// Get kernel wakelock stats
parseProcWakelocks(mKernelWakelockBuffer, len, wakeup_sources, staleStats);
return removeOldStats(staleStats);
}
}