Add missing profiler options. (9828d067) · Commits · e / os / android_frameworks_base

core/jni/AndroidRuntime.cpp

+55 −21

Original line number	Diff line number	Diff line
		@@ -488,6 +488,8 @@ int AndroidRuntime::startVm(JavaVM pJavaVM, JNIEnv pEnv)
		char profile_duration[sizeof("-Xprofile-duration:") + PROPERTY_VALUE_MAX];
		char profile_interval[sizeof("-Xprofile-interval:") + PROPERTY_VALUE_MAX];
		char profile_backoff[sizeof("-Xprofile-backoff:") + PROPERTY_VALUE_MAX];
		char profile_top_k_threshold[sizeof("-Xprofile-top-k-threshold") + PROPERTY_VALUE_MAX];
		char profile_top_k_change_threshold[sizeof("-Xprofile-top-k-change-threshold") + PROPERTY_VALUE_MAX];
		char langOption[sizeof("-Duser.language=") + 3];
		char regionOption[sizeof("-Duser.region=") + 3];
		char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:") + sizeof(propBuf)];
		@@ -811,33 +813,65 @@ int AndroidRuntime::startVm(JavaVM pJavaVM, JNIEnv pEnv)
		* Set profiler options
		*/
		if (libart) {
		// Number of seconds during profile runs.
		property_get("dalvik.vm.profiler", propBuf, "0");
		if (propBuf[0] == '1') {
		opt.optionString = "-Xenable-profiler";
		mOptions.add(opt);
		}

		property_get("dalvik.vm.profile.start-immediately", propBuf, "0");
		if (propBuf[0] == '1') {
		opt.optionString = "-Xprofile-start-immediately";
		mOptions.add(opt);
		}

		// Number of seconds during profile runs.
		strcpy(profile_period, "-Xprofile-period:");
		property_get("dalvik.vm.profile.period_secs", profile_period+17, "10");
		if (property_get("dalvik.vm.profile.period-secs", profile_period+17, NULL) > 0) {
		opt.optionString = profile_period;
		mOptions.add(opt);
		}

		// Length of each profile run (seconds).
		strcpy(profile_duration, "-Xprofile-duration:");
		property_get("dalvik.vm.profile.duration_secs", profile_duration+19, "30");
		if (property_get("dalvik.vm.profile.duration-secs", profile_duration+19, NULL) > 0) {
		opt.optionString = profile_duration;
		mOptions.add(opt);

		}

		// Polling interval during profile run (microseconds).
		strcpy(profile_interval, "-Xprofile-interval:");
		property_get("dalvik.vm.profile.interval_us", profile_interval+19, "10000");
		if (property_get("dalvik.vm.profile.interval-us", profile_interval+19, NULL) > 0) {
		opt.optionString = profile_interval;
		mOptions.add(opt);
		}

		// Coefficient for period backoff. The the period is multiplied
		// by this value after each profile run.
		strcpy(profile_backoff, "-Xprofile-backoff:");
		property_get("dalvik.vm.profile.backoff_coeff", profile_backoff+18, "2.0");
		if (property_get("dalvik.vm.profile.backoff-coeff", profile_backoff+18, NULL) > 0) {
		opt.optionString = profile_backoff;
		mOptions.add(opt);
		}

		// Top K% of samples that are considered relevant when deciding if the app should be recompiled.
		strcpy(profile_top_k_threshold, "-Xprofile-top-k-threshold:");
		if (property_get("dalvik.vm.profile.top-k-thr", profile_top_k_threshold+26, NULL) > 0) {
		opt.optionString = profile_top_k_threshold;
		mOptions.add(opt);
		}

		// The threshold after which a change in the structure of the top K% profiled samples becomes significant
		// and triggers recompilation. A change in profile is considered significant if X% (top-k-change-threshold)
		// of the top K% (top-k-threshold property) samples has changed.
		strcpy(profile_top_k_change_threshold, "-Xprofile-top-k-change-threshold:");
		if (property_get("dalvik.vm.profile.top-k-ch-thr", profile_top_k_change_threshold+33, NULL) > 0) {
		opt.optionString = profile_top_k_change_threshold;
		mOptions.add(opt);
		}
		}

		initArgs.version = JNI_VERSION_1_4;
		initArgs.options = mOptions.editArray();
		initArgs.nOptions = mOptions.size();