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wire up sampling profiler to dropbox

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When system property "persist.sys.profiler_hz" > 0, SamplingProfilerService is
loaded to SystemServer. It creates a FileObserver, watching any new file in the snapshot
directory. When a snapshot is found, it is put in dropbox and deleted after that.

SamplingProfilerIntegration writes snapshots with headers. Headers are <name, value> pairs,
instantiated by caller.

Currently header format is (also in source comment):

Version: <version number of profiler>\n
Process: <process name>\n
Package: <package name, if exists>\n
Package-Version: <version number of the package, if exists>\n
Build: <fingerprint>\n
\n
<the actual snapshot content begins here...>

BUG=2732642

Change-Id: I2c1699f1728e603de13dbd38f9d8443cd3eecc06
This commit is contained in:
Sen Hu
2010-05-28 01:54:03 -07:00
parent e377032899
commit bde7570659
5 changed files with 248 additions and 70 deletions
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18
services/java/com/android/server/SystemServer.java
View File

@@ -77,7 +77,7 @@ class ServerThread extends Thread {
android.os.Process.THREAD_PRIORITY_FOREGROUND);
BinderInternal.disableBackgroundScheduling(true);
String factoryTestStr = SystemProperties.get("ro.factorytest");
int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF
: Integer.parseInt(factoryTestStr);
@@ -401,6 +401,18 @@ class ServerThread extends Thread {
} catch (Throwable e) {
Slog.e(TAG, "Failure starting DiskStats Service", e);
}
try {
// need to add this service even if SamplingProfilerIntegration.isEnabled()
// is false, because it is this service that detects system property change and
// turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work,
// there is little overhead for running this service.
Slog.i(TAG, "SamplingProfiler Service");
ServiceManager.addService("samplingprofiler",
new SamplingProfilerService(context));
} catch (Throwable e) {
Slog.e(TAG, "Failure starting SamplingProfiler Service", e);
}
}
// make sure the ADB_ENABLED setting value matches the secure property value
@@ -519,7 +531,7 @@ public class SystemServer {
timer.schedule(new TimerTask() {
@Override
public void run() {
SamplingProfilerIntegration.writeSnapshot("system_server");
SamplingProfilerIntegration.writeSnapshot("system_server", null);
}
}, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL);
}
@@ -527,7 +539,7 @@ public class SystemServer {
// The system server has to run all of the time, so it needs to be
// as efficient as possible with its memory usage.
VMRuntime.getRuntime().setTargetHeapUtilization(0.8f);
System.loadLibrary("android_servers");
init1(args);
}