LineageOS/android_packages_modules_Connectivity
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Merge "Use delta reads for per uid traffic stats" am: 39de2905a5 am: 03074c729f

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am: cf8d605cfb

Change-Id: Ia2d3aad715dc1a2ff65ea9ec1a5badeda47c47a6
This commit is contained in:
Chenbo Feng
2019-01-24 11:57:26 -08:00
committed by android-build-merger
parent 69281a355b cf8d605cfb
commit ac4d7d1258
1 changed files with 26 additions and 9 deletions
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35
core/java/com/android/internal/net/NetworkStatsFactory.java
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@@ -64,6 +64,9 @@ public class NetworkStatsFactory {
private boolean mUseBpfStats;
// A persistent Snapshot since device start for eBPF stats
private final NetworkStats mPersistSnapshot;
// TODO: only do adjustments in NetworkStatsService and remove this.
/**
* (Stacked interface) -> (base interface) association for all connected ifaces since boot.
@@ -135,6 +138,7 @@ public class NetworkStatsFactory {
mStatsXtIfaceFmt = new File(procRoot, "net/xt_qtaguid/iface_stat_fmt");
mStatsXtUid = new File(procRoot, "net/xt_qtaguid/stats");
mUseBpfStats = useBpfStats;
mPersistSnapshot = new NetworkStats(SystemClock.elapsedRealtime(), -1);
}
public NetworkStats readBpfNetworkStatsDev() throws IOException {
@@ -268,6 +272,7 @@ public class NetworkStatsFactory {
return stats;
}
// TODO: delete the lastStats parameter
private NetworkStats readNetworkStatsDetailInternal(int limitUid, String[] limitIfaces,
int limitTag, NetworkStats lastStats) throws IOException {
if (USE_NATIVE_PARSING) {
@@ -278,16 +283,28 @@ public class NetworkStatsFactory {
} else {
stats = new NetworkStats(SystemClock.elapsedRealtime(), -1);
}
if (nativeReadNetworkStatsDetail(stats, mStatsXtUid.getAbsolutePath(), limitUid,
limitIfaces, limitTag, mUseBpfStats) != 0) {
throw new IOException("Failed to parse network stats");
if (mUseBpfStats) {
if (nativeReadNetworkStatsDetail(stats, mStatsXtUid.getAbsolutePath(), UID_ALL,
null, TAG_ALL, mUseBpfStats) != 0) {
throw new IOException("Failed to parse network stats");
}
mPersistSnapshot.setElapsedRealtime(stats.getElapsedRealtime());
mPersistSnapshot.combineAllValues(stats);
NetworkStats result = mPersistSnapshot.clone();
result.filter(limitUid, limitIfaces, limitTag);
return result;
} else {
if (nativeReadNetworkStatsDetail(stats, mStatsXtUid.getAbsolutePath(), limitUid,
limitIfaces, limitTag, mUseBpfStats) != 0) {
throw new IOException("Failed to parse network stats");
}
if (SANITY_CHECK_NATIVE) {
final NetworkStats javaStats = javaReadNetworkStatsDetail(mStatsXtUid, limitUid,
limitIfaces, limitTag);
assertEquals(javaStats, stats);
}
return stats;
}
if (SANITY_CHECK_NATIVE) {
final NetworkStats javaStats = javaReadNetworkStatsDetail(mStatsXtUid, limitUid,
limitIfaces, limitTag);
assertEquals(javaStats, stats);
}
return stats;
} else {
return javaReadNetworkStatsDetail(mStatsXtUid, limitUid, limitIfaces, limitTag);
}