import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
/**
 * Dump all Nashorn debug mode counters. Calling this may be better if
 * you want to print all counters. This way you can avoid too many callsites
 * due to counter access itself!!
 * @param self self reference
 * @return undefined
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object dumpCounters(final Object self) {
    final PrintWriter out = Context.getCurrentErr();

    out.println("ScriptObject count " + ScriptObject.getCount());
    out.println("Scope count " + Scope.getScopeCount());
    out.println("ScriptObject listeners added " + PropertyListeners.getListenersAdded());
    out.println("ScriptObject listeners removed " + PropertyListeners.getListenersRemoved());
    out.println("ScriptFunction constructor calls " + ScriptFunction.getConstructorCount());
    out.println("ScriptFunction invokes " + ScriptFunction.getInvokes());
    out.println("ScriptFunction allocations " + ScriptFunction.getAllocations());
    out.println("PropertyMap count " + PropertyMap.getCount());
    out.println("PropertyMap cloned " + PropertyMap.getClonedCount());
    out.println("PropertyMap history hit " + PropertyMap.getHistoryHit());
    out.println("PropertyMap proto invalidations " + PropertyMap.getProtoInvalidations());
    out.println("PropertyMap proto history hit " + PropertyMap.getProtoHistoryHit());
    out.println("PropertyMap setProtoNewMapCount " + PropertyMap.getSetProtoNewMapCount());
    out.println("Callsite count " + LinkerCallSite.getCount());
    out.println("Callsite misses " + LinkerCallSite.getMissCount());
    out.println("Callsite misses by site at " + LinkerCallSite.getMissSamplingPercentage() + "%");

    LinkerCallSite.getMissCounts(out);

    return UNDEFINED;
}
 

import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
/**
 * Dump all Nashorn debug mode counters. Calling this may be better if
 * you want to print all counters. This way you can avoid too many callsites
 * due to counter access itself!!
 * @param self self reference
 * @return undefined
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object dumpCounters(final Object self) {
    final PrintWriter out = Context.getCurrentErr();

    out.println("ScriptObject count " + ScriptObject.getCount());
    out.println("Scope count " + Scope.getCount());
    out.println("ScriptObject listeners added " + PropertyListeners.getListenersAdded());
    out.println("ScriptObject listeners removed " + PropertyListeners.getListenersRemoved());
    out.println("ScriptFunction constructor calls " + ScriptFunction.getConstructorCount());
    out.println("ScriptFunction invokes " + ScriptFunction.getInvokes());
    out.println("ScriptFunction allocations " + ScriptFunction.getAllocations());
    out.println("PropertyMap count " + PropertyMap.getCount());
    out.println("PropertyMap cloned " + PropertyMap.getClonedCount());
    out.println("PropertyMap history hit " + PropertyMap.getHistoryHit());
    out.println("PropertyMap proto invalidations " + PropertyMap.getProtoInvalidations());
    out.println("PropertyMap proto history hit " + PropertyMap.getProtoHistoryHit());
    out.println("PropertyMap setProtoNewMapCount " + PropertyMap.getSetProtoNewMapCount());
    out.println("Callsite count " + LinkerCallSite.getCount());
    out.println("Callsite misses " + LinkerCallSite.getMissCount());
    out.println("Callsite misses by site at " + LinkerCallSite.getMissSamplingPercentage() + "%");

    LinkerCallSite.getMissCounts(out);

    return UNDEFINED;
}
 

import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
@Override
public void toString(final StringBuilder sb, final boolean printType) {
    if (printType) {
        sb.append("{I}");
    }
    sb.append(CompilerConstants.SCOPE.symbolName()).append('.').append(Scope.GET_SPLIT_STATE.name()).append("()");
}
 

import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
@Override
MethodEmitter registerReturn() {
    setHasReturn();
    loadCompilerConstant(SCOPE);
    checkcast(Scope.class);
    load(0);
    invoke(Scope.SET_SPLIT_STATE);
    return this;
}
 

import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
@Override
public void toString(final StringBuilder sb, final boolean printType) {
    sb.append(CompilerConstants.SCOPE.symbolName()).append('.').append(Scope.SET_SPLIT_STATE.name())
    .append('(').append(state).append(");");
}
 

import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
MethodEmitter loadScope() {
    return loadCompilerConstant(SCOPE).checkcast(Scope.class);
}
 

import jdk.nashorn.internal.runtime.Scope; //导入依赖的package包/类
MethodEmitter setSplitState(final int state) {
    return loadScope().load(state).invoke(Scope.SET_SPLIT_STATE);
}