jdk.nashorn.internal.runtime.events.RuntimeEvent Java Examples

/**
 * Remove a specific runtime event from the event queue
 * @param self self reference
 * @param event event to remove
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void removeRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q  = getEventQueue(self);
    final RuntimeEvent<?>             re = getEvent(event);
    if (!q.remove(re)) {
        throw new IllegalStateException("runtime event " + re + " was not in event queue");
    }
}
 

private static void logEvent(final RuntimeEvent<?> event) {
    if (event != null) {
        final Global global = Context.getGlobal();
        if (global.has("Debug")) {
            final ScriptObject debug = (ScriptObject)global.get("Debug");
            final ScriptFunction addRuntimeEvent = (ScriptFunction)debug.get("addRuntimeEvent");
            ScriptRuntime.apply(addRuntimeEvent, debug, event);
        }
    }
}
 

@SuppressWarnings("unchecked")
private static LinkedList<RuntimeEvent<?>> getEventQueue(final Object self) {
    final ScriptObject sobj = (ScriptObject)self;
    LinkedList<RuntimeEvent<?>> q;
    if (sobj.has(EVENT_QUEUE)) {
        q = (LinkedList<RuntimeEvent<?>>)((ScriptObject)self).get(EVENT_QUEUE);
    } else {
        ((ScriptObject)self).set(EVENT_QUEUE, q = new LinkedList<>(), NashornCallSiteDescriptor.CALLSITE_STRICT);
    }
    return q;
}
 

/**
 * Add a runtime event to the runtime event queue. The queue has a fixed
 * size {@link RuntimeEvent#RUNTIME_EVENT_QUEUE_SIZE} and the oldest
 * entry will be thrown out of the queue is about to overflow
 * @param self self reference
 * @param event event to add
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void addRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int cap = (Integer)getEventQueueCapacity(self);
    while (q.size() >= cap) {
        q.removeFirst();
    }
    q.addLast(getEvent(event));
}
 

/**
 * Get the capacity of the event queue
 * @param self self reference
 * @return capacity of event queue as an integer
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getEventQueueCapacity(final Object self) {
    final ScriptObject sobj = (ScriptObject)self;
    Integer cap;
    if (sobj.has(EVENT_QUEUE_CAPACITY)) {
        cap = JSType.toInt32(sobj.get(EVENT_QUEUE_CAPACITY));
    } else {
        setEventQueueCapacity(self, cap = RuntimeEvent.RUNTIME_EVENT_QUEUE_SIZE);
    }
    return cap;
}
 

/**
 * Add a runtime event to the runtime event queue. The queue has a fixed
 * size {@link RuntimeEvent#RUNTIME_EVENT_QUEUE_SIZE} and the oldest
 * entry will be thrown out of the queue is about to overflow
 * @param self self reference
 * @param event event to add
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void addRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int cap = (Integer)getEventQueueCapacity(self);
    while (q.size() >= cap) {
        q.removeFirst();
    }
    q.addLast(getEvent(event));
}
 

/**
 * Expands the event queue capacity, or truncates if capacity is lower than
 * current capacity. Then only the newest entries are kept
 * @param self self reference
 * @param newCapacity new capacity
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void expandEventQueueCapacity(final Object self, final Object newCapacity) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int nc = JSType.toInt32(newCapacity);
    while (q.size() > nc) {
        q.removeFirst();
    }
    setEventQueueCapacity(self, nc);
}
 

/**
 * Remove a specific runtime event from the event queue
 * @param self self reference
 * @param event event to remove
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void removeRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q  = getEventQueue(self);
    final RuntimeEvent<?>             re = getEvent(event);
    if (!q.remove(re)) {
        throw new IllegalStateException("runtime event " + re + " was not in event queue");
    }
}
 

private static void logEvent(final RuntimeEvent<?> event) {
    if (event != null) {
        final Global global = Context.getGlobal();
        if (global.has("Debug")) {
            final ScriptObject debug = (ScriptObject)global.get("Debug");
            final ScriptFunction addRuntimeEvent = (ScriptFunction)debug.get("addRuntimeEvent");
            ScriptRuntime.apply(addRuntimeEvent, debug, event);
        }
    }
}
 

/**
 * Get the capacity of the event queue
 * @param self self reference
 * @return capacity of event queue as an integer
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getEventQueueCapacity(final Object self) {
    final ScriptObject sobj = (ScriptObject)self;
    Integer cap;
    if (sobj.has(EVENT_QUEUE_CAPACITY)) {
        cap = JSType.toInt32(sobj.get(EVENT_QUEUE_CAPACITY));
    } else {
        setEventQueueCapacity(self, cap = RuntimeEvent.RUNTIME_EVENT_QUEUE_SIZE);
    }
    return cap;
}
 

/**
 * Expands the event queue capacity, or truncates if capacity is lower than
 * current capacity. Then only the newest entries are kept
 * @param self self reference
 * @param newCapacity new capacity
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void expandEventQueueCapacity(final Object self, final Object newCapacity) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int nc = JSType.toInt32(newCapacity);
    while (q.size() > nc) {
        q.removeFirst();
    }
    setEventQueueCapacity(self, nc);
}
 

/**
 * Remove a specific runtime event from the event queue
 * @param self self reference
 * @param event event to remove
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void removeRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q  = getEventQueue(self);
    final RuntimeEvent<?>             re = getEvent(event);
    if (!q.remove(re)) {
        throw new IllegalStateException("runtime event " + re + " was not in event queue");
    }
}
 

@SuppressWarnings("unchecked")
private static LinkedList<RuntimeEvent<?>> getEventQueue(final Object self) {
    final ScriptObject sobj = (ScriptObject)self;
    LinkedList<RuntimeEvent<?>> q;
    if (sobj.has(EVENT_QUEUE)) {
        q = (LinkedList<RuntimeEvent<?>>)((ScriptObject)self).get(EVENT_QUEUE);
    } else {
        ((ScriptObject)self).set(EVENT_QUEUE, q = new LinkedList<>(), NashornCallSiteDescriptor.CALLSITE_STRICT);
    }
    return q;
}
 

private static void logEvent(final RuntimeEvent<?> event) {
    if (event != null) {
        final Global global = Context.getGlobal();
        if (global.has("Debug")) {
            final ScriptObject debug = (ScriptObject)global.get("Debug");
            final ScriptFunction addRuntimeEvent = (ScriptFunction)debug.get("addRuntimeEvent");
            ScriptRuntime.apply(addRuntimeEvent, debug, event);
        }
    }
}
 

/**
 * Get the capacity of the event queue
 * @param self self reference
 * @return capacity of event queue as an integer
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getEventQueueCapacity(final Object self) {
    final ScriptObject sobj = (ScriptObject)self;
    Integer cap;
    if (sobj.has(EVENT_QUEUE_CAPACITY)) {
        cap = JSType.toInt32(sobj.get(EVENT_QUEUE_CAPACITY));
    } else {
        setEventQueueCapacity(self, cap = RuntimeEvent.RUNTIME_EVENT_QUEUE_SIZE);
    }
    return cap;
}
 

@SuppressWarnings("unchecked")
private static LinkedList<RuntimeEvent<?>> getEventQueue(final Object self) {
    final ScriptObject sobj = (ScriptObject)self;
    LinkedList<RuntimeEvent<?>> q;
    if (sobj.has(EVENT_QUEUE)) {
        q = (LinkedList<RuntimeEvent<?>>)((ScriptObject)self).get(EVENT_QUEUE);
    } else {
        ((ScriptObject)self).set(EVENT_QUEUE, q = new LinkedList<>(), NashornCallSiteDescriptor.CALLSITE_STRICT);
    }
    return q;
}
 

/**
 * Add a runtime event to the runtime event queue. The queue has a fixed
 * size {@link RuntimeEvent#RUNTIME_EVENT_QUEUE_SIZE} and the oldest
 * entry will be thrown out of the queue is about to overflow
 * @param self self reference
 * @param event event to add
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void addRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int cap = (Integer)getEventQueueCapacity(self);
    while (q.size() >= cap) {
        q.removeFirst();
    }
    q.addLast(getEvent(event));
}
 

/**
 * Add a runtime event to the runtime event queue. The queue has a fixed
 * size {@link RuntimeEvent#RUNTIME_EVENT_QUEUE_SIZE} and the oldest
 * entry will be thrown out of the queue is about to overflow
 * @param self self reference
 * @param event event to add
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void addRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int cap = (Integer)getEventQueueCapacity(self);
    while (q.size() >= cap) {
        q.removeFirst();
    }
    q.addLast(getEvent(event));
}
 

/**
 * Expands the event queue capacity, or truncates if capacity is lower than
 * current capacity. Then only the newest entries are kept
 * @param self self reference
 * @param newCapacity new capacity
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void expandEventQueueCapacity(final Object self, final Object newCapacity) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int nc = JSType.toInt32(newCapacity);
    while (q.size() > nc) {
        q.removeFirst();
    }
    setEventQueueCapacity(self, nc);
}
 

/**
 * Add a runtime event to the runtime event queue. The queue has a fixed
 * size {@link RuntimeEvent#RUNTIME_EVENT_QUEUE_SIZE} and the oldest
 * entry will be thrown out of the queue is about to overflow
 * @param self self reference
 * @param event event to add
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static void addRuntimeEvent(final Object self, final Object event) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    final int cap = (Integer)getEventQueueCapacity(self);
    while (q.size() >= cap) {
        q.removeFirst();
    }
    q.addLast(getEvent(event));
}
 

/**
 * Return all runtime events in the queue as an array
 * @param self self reference
 * @return array of events
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getRuntimeEvents(final Object self) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    return q.toArray(new RuntimeEvent<?>[0]);
}
 

/**
 * Return all runtime events in the queue as an array
 * @param self self reference
 * @return array of events
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getRuntimeEvents(final Object self) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    return q.toArray(new RuntimeEvent<?>[q.size()]);
}
 

private static RuntimeEvent<?> getEvent(final Object event) {
    return (RuntimeEvent<?>)event;
}
 

private synchronized Class<?> compile(final Source source, final ErrorManager errMan, final boolean strict) {
    // start with no errors, no warnings.
    errMan.reset();

    Class<?> script = findCachedClass(source);
    if (script != null) {
        final DebugLogger log = getLogger(Compiler.class);
        if (log.isEnabled()) {
            log.fine(new RuntimeEvent<>(Level.INFO, source), "Code cache hit for ", source, " avoiding recompile.");
        }
        return script;
    }

    StoredScript storedScript = null;
    FunctionNode functionNode = null;
    // Don't use code store if optimistic types is enabled but lazy compilation is not.
    // This would store a full script compilation with many wrong optimistic assumptions that would
    // do more harm than good on later runs with both optimistic types and lazy compilation enabled.
    final boolean useCodeStore = codeStore != null && !env._parse_only && (!env._optimistic_types || env._lazy_compilation);
    final String cacheKey = useCodeStore ? CodeStore.getCacheKey("script", null) : null;

    if (useCodeStore) {
        storedScript = codeStore.load(source, cacheKey);
    }

    if (storedScript == null) {
        if (env._dest_dir != null) {
            source.dump(env._dest_dir);
        }

        functionNode = new Parser(env, source, errMan, strict, getLogger(Parser.class)).parse();

        if (errMan.hasErrors()) {
            return null;
        }

        if (env._print_ast || functionNode.getFlag(FunctionNode.IS_PRINT_AST)) {
            getErr().println(new ASTWriter(functionNode));
        }

        if (env._print_parse || functionNode.getFlag(FunctionNode.IS_PRINT_PARSE)) {
            getErr().println(new PrintVisitor(functionNode, true, false));
        }
    }

    if (env._parse_only) {
        return null;
    }

    final URL          url    = source.getURL();
    final ScriptLoader loader = env._loader_per_compile ? createNewLoader() : scriptLoader;
    final CodeSource   cs     = new CodeSource(url, (CodeSigner[])null);
    final CodeInstaller<ScriptEnvironment> installer = new ContextCodeInstaller(this, loader, cs);

    if (storedScript == null) {
        final CompilationPhases phases = Compiler.CompilationPhases.COMPILE_ALL;

        final Compiler compiler = new Compiler(
                this,
                env,
                installer,
                source,
                errMan,
                strict | functionNode.isStrict());

        final FunctionNode compiledFunction = compiler.compile(functionNode, phases);
        if (errMan.hasErrors()) {
            return null;
        }
        script = compiledFunction.getRootClass();
        compiler.persistClassInfo(cacheKey, compiledFunction);
    } else {
        Compiler.updateCompilationId(storedScript.getCompilationId());
        script = storedScript.installScript(source, installer);
    }

    cacheClass(source, script);
    return script;
}
 

/**
 * Return the last runtime event in the queue
 * @param self self reference
 * @return the freshest event, null if queue is empty
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getLastRuntimeEvent(final Object self) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    return q.isEmpty() ? null : q.getLast();
}
 

private static RuntimeEvent<?> getEvent(final Object event) {
    return (RuntimeEvent<?>)event;
}
 

private synchronized Class<?> compile(final Source source, final ErrorManager errMan, final boolean strict) {
    // start with no errors, no warnings.
    errMan.reset();

    Class<?> script = findCachedClass(source);
    if (script != null) {
        final DebugLogger log = getLogger(Compiler.class);
        if (log.isEnabled()) {
            log.fine(new RuntimeEvent<>(Level.INFO, source), "Code cache hit for ", source, " avoiding recompile.");
        }
        return script;
    }

    StoredScript storedScript = null;
    FunctionNode functionNode = null;
    // Don't use code store if optimistic types is enabled but lazy compilation is not.
    // This would store a full script compilation with many wrong optimistic assumptions that would
    // do more harm than good on later runs with both optimistic types and lazy compilation enabled.
    final boolean useCodeStore = codeStore != null && !env._parse_only && (!env._optimistic_types || env._lazy_compilation);
    final String cacheKey = useCodeStore ? CodeStore.getCacheKey("script", null) : null;

    if (useCodeStore) {
        storedScript = codeStore.load(source, cacheKey);
    }

    if (storedScript == null) {
        if (env._dest_dir != null) {
            source.dump(env._dest_dir);
        }

        functionNode = new Parser(env, source, errMan, strict, getLogger(Parser.class)).parse();

        if (errMan.hasErrors()) {
            return null;
        }

        if (env._print_ast || functionNode.getFlag(FunctionNode.IS_PRINT_AST)) {
            getErr().println(new ASTWriter(functionNode));
        }

        if (env._print_parse || functionNode.getFlag(FunctionNode.IS_PRINT_PARSE)) {
            getErr().println(new PrintVisitor(functionNode, true, false));
        }
    }

    if (env._parse_only) {
        return null;
    }

    final URL          url    = source.getURL();
    final ScriptLoader loader = env._loader_per_compile ? createNewLoader() : scriptLoader;
    final CodeSource   cs     = new CodeSource(url, (CodeSigner[])null);
    final CodeInstaller installer = new ContextCodeInstaller(this, loader, cs);

    if (storedScript == null) {
        final CompilationPhases phases = Compiler.CompilationPhases.COMPILE_ALL;

        final Compiler compiler = Compiler.forInitialCompilation(
                installer,
                source,
                errMan,
                strict | functionNode.isStrict());

        final FunctionNode compiledFunction = compiler.compile(functionNode, phases);
        if (errMan.hasErrors()) {
            return null;
        }
        script = compiledFunction.getRootClass();
        compiler.persistClassInfo(cacheKey, compiledFunction);
    } else {
        Compiler.updateCompilationId(storedScript.getCompilationId());
        script = storedScript.installScript(source, installer);
    }

    cacheClass(source, script);
    return script;
}
 

/**
 * Return the last runtime event in the queue
 * @param self self reference
 * @return the freshest event, null if queue is empty
 */
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object getLastRuntimeEvent(final Object self) {
    final LinkedList<RuntimeEvent<?>> q = getEventQueue(self);
    return q.isEmpty() ? null : q.getLast();
}
 

private static RuntimeEvent<?> getEvent(final Object event) {
    return (RuntimeEvent<?>)event;
}
 

private static RuntimeEvent<?> getEvent(final Object event) {
    return (RuntimeEvent<?>)event;
}