import com.sun.tracing.Provider; //导入依赖的package包/类
public <T extends Provider> T createProvider(Class<T> cls) {
    HashSet<Provider> providers = new HashSet<Provider>();
    for (ProviderFactory factory : factories) {
        providers.add(factory.createProvider(cls));
    }
    MultiplexProvider provider = new MultiplexProvider(cls, providers);
    provider.init();
    return provider.newProxyInstance();
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
MultiplexProbe(Method m, Set<Provider> providers) {
    super(m.getParameterTypes());
    probes = new HashSet<Probe>();
    for (Provider p : providers) {
        Probe probe = p.getProbe(m);
        if (probe != null) {
            probes.add(probe);
        }
    }
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
public <T extends Provider> T createProvider(Class<T> cls) {
    PrintStreamProvider provider = new PrintStreamProvider(cls, stream);
    provider.init();
    return provider.newProxyInstance();
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
PrintStreamProvider(Class<? extends Provider> type, PrintStream stream) {
    super(type);
    this.stream = stream;
    this.providerName = getProviderName();
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
NullProvider(Class<? extends Provider> type) {
    super(type);
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
MultiplexProvider(Class<? extends Provider> type, Set<Provider> providers) {
    super(type);
    this.providers = providers;
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
public void dispose() {
    for (Provider p : providers) {
        p.dispose();
    }
    super.dispose();
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
DTraceProvider(Class<? extends Provider> type) {
    super(type);
}
 

import com.sun.tracing.Provider; //导入依赖的package包/类
/**
 * Initializes the provider.
 *
 * @param type the user's interface
 */
protected ProviderSkeleton(Class<? extends Provider> type) {
    this.active = false; // in case of some error during initialization
    this.providerType = type;
    this.probes = new HashMap<Method,ProbeSkeleton>();
}