Java Code Examples for java.lang.invoke.SwitchPoint#guardWithTest()

The following examples show how to use java.lang.invoke.SwitchPoint#guardWithTest() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: CompiledFunction.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
private static void relinkComposableInvoker(final CallSite cs, final CompiledFunction inv, final boolean constructor) {
    final HandleAndAssumptions handleAndAssumptions = inv.getValidOptimisticInvocation(new Supplier<MethodHandle>() {
        @Override
        public MethodHandle get() {
            return inv.getInvokerOrConstructor(constructor);
        }
    });
    final MethodHandle handle = handleAndAssumptions.handle;
    final SwitchPoint assumptions = handleAndAssumptions.assumptions;
    final MethodHandle target;
    if(assumptions == null) {
        target = handle;
    } else {
        final MethodHandle relink = MethodHandles.insertArguments(RELINK_COMPOSABLE_INVOKER, 0, cs, inv, constructor);
        target = assumptions.guardWithTest(handle, MethodHandles.foldArguments(cs.dynamicInvoker(), relink));
    }
    cs.setTarget(target.asType(cs.type()));
}
Example 2
Source File: CompiledFunction.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
private static void relinkComposableInvoker(final CallSite cs, final CompiledFunction inv, final boolean constructor) {
    final HandleAndAssumptions handleAndAssumptions = inv.getValidOptimisticInvocation(new Supplier<MethodHandle>() {
        @Override
        public MethodHandle get() {
            return inv.getInvokerOrConstructor(constructor);
        }
    });
    final MethodHandle handle = handleAndAssumptions.handle;
    final SwitchPoint assumptions = handleAndAssumptions.assumptions;
    final MethodHandle target;
    if(assumptions == null) {
        target = handle;
    } else {
        final MethodHandle relink = MethodHandles.insertArguments(RELINK_COMPOSABLE_INVOKER, 0, cs, inv, constructor);
        target = assumptions.guardWithTest(handle, MethodHandles.foldArguments(cs.dynamicInvoker(), relink));
    }
    cs.setTarget(target.asType(cs.type()));
}
Example 3
Source File: CompiledFunction.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
private static void relinkComposableInvoker(final CallSite cs, final CompiledFunction inv, final boolean constructor) {
    final HandleAndAssumptions handleAndAssumptions = inv.getValidOptimisticInvocation(new Supplier<MethodHandle>() {
        @Override
        public MethodHandle get() {
            return inv.getInvokerOrConstructor(constructor);
        }
    });
    final MethodHandle handle = handleAndAssumptions.handle;
    final SwitchPoint assumptions = handleAndAssumptions.assumptions;
    final MethodHandle target;
    if(assumptions == null) {
        target = handle;
    } else {
        final MethodHandle relink = MethodHandles.insertArguments(RELINK_COMPOSABLE_INVOKER, 0, cs, inv, constructor);
        target = assumptions.guardWithTest(handle, MethodHandles.foldArguments(cs.dynamicInvoker(), relink));
    }
    cs.setTarget(target.asType(cs.type()));
}
Example 4
Source File: CompiledFunction.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
private static void relinkComposableInvoker(final CallSite cs, final CompiledFunction inv, final boolean constructor) {
    final HandleAndAssumptions handleAndAssumptions = inv.getValidOptimisticInvocation(new Supplier<MethodHandle>() {
        @Override
        public MethodHandle get() {
            return inv.getInvokerOrConstructor(constructor);
        }
    });
    final MethodHandle handle = handleAndAssumptions.handle;
    final SwitchPoint assumptions = handleAndAssumptions.assumptions;
    final MethodHandle target;
    if(assumptions == null) {
        target = handle;
    } else {
        final MethodHandle relink = MethodHandles.insertArguments(RELINK_COMPOSABLE_INVOKER, 0, cs, inv, constructor);
        target = assumptions.guardWithTest(handle, MethodHandles.foldArguments(cs.dynamicInvoker(), relink));
    }
    cs.setTarget(target.asType(cs.type()));
}
Example 5
Source File: CompiledFunction.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
private static void relinkComposableInvoker(final CallSite cs, final CompiledFunction inv, final boolean constructor) {
    final HandleAndAssumptions handleAndAssumptions = inv.getValidOptimisticInvocation(new Supplier<MethodHandle>() {
        @Override
        public MethodHandle get() {
            return inv.getInvokerOrConstructor(constructor);
        }
    });
    final MethodHandle handle = handleAndAssumptions.handle;
    final SwitchPoint assumptions = handleAndAssumptions.assumptions;
    final MethodHandle target;
    if(assumptions == null) {
        target = handle;
    } else {
        final MethodHandle relink = MethodHandles.insertArguments(RELINK_COMPOSABLE_INVOKER, 0, cs, inv, constructor);
        target = assumptions.guardWithTest(handle, MethodHandles.foldArguments(cs.dynamicInvoker(), relink));
    }
    cs.setTarget(target.asType(cs.type()));
}
Example 6
Source File: CompiledFunction.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
private static void relinkComposableInvoker(final CallSite cs, final CompiledFunction inv, final boolean constructor) {
    final HandleAndAssumptions handleAndAssumptions = inv.getValidOptimisticInvocation(new Supplier<MethodHandle>() {
        @Override
        public MethodHandle get() {
            return inv.getInvokerOrConstructor(constructor);
        }
    });
    final MethodHandle handle = handleAndAssumptions.handle;
    final SwitchPoint assumptions = handleAndAssumptions.assumptions;
    final MethodHandle target;
    if(assumptions == null) {
        target = handle;
    } else {
        final MethodHandle relink = MethodHandles.insertArguments(RELINK_COMPOSABLE_INVOKER, 0, cs, inv, constructor);
        target = assumptions.guardWithTest(handle, MethodHandles.foldArguments(cs.dynamicInvoker(), relink));
    }
    cs.setTarget(target.asType(cs.type()));
}
Example 7
Source File: GuardedInvocation.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes the invocation, switchpoint, and the guard into a composite method handle that knows how to fall back.
 * @param switchpointFallback the fallback method handle in case switchpoint is invalidated.
 * @param guardFallback the fallback method handle in case guard returns false.
 * @param catchFallback the fallback method in case the exception handler triggers
 * @return a composite method handle.
 */
public MethodHandle compose(final MethodHandle guardFallback, final MethodHandle switchpointFallback, final MethodHandle catchFallback) {
    final MethodHandle guarded =
            guard == null ?
                    invocation :
                    MethodHandles.guardWithTest(
                            guard,
                            invocation,
                            guardFallback);

    final MethodHandle catchGuarded =
            exception == null ?
                    guarded :
                    MH.catchException(
                            guarded,
                            exception,
                            MethodHandles.dropArguments(
                                catchFallback,
                                0,
                                exception));

    if (switchPoints == null) {
        return catchGuarded;
    }

    MethodHandle spGuarded = catchGuarded;
    for (final SwitchPoint sp : switchPoints) {
        spGuarded = sp.guardWithTest(spGuarded, switchpointFallback);
    }

    return spGuarded;
}
Example 8
Source File: GuardedInvocation.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes the invocation, switchpoint, and the guard into a composite method handle that knows how to fall back.
 * @param switchpointFallback the fallback method handle in case switchpoint is invalidated.
 * @param guardFallback the fallback method handle in case guard returns false.
 * @param catchFallback the fallback method in case the exception handler triggers
 * @return a composite method handle.
 */
public MethodHandle compose(final MethodHandle guardFallback, final MethodHandle switchpointFallback, final MethodHandle catchFallback) {
    final MethodHandle guarded =
            guard == null ?
                    invocation :
                    MethodHandles.guardWithTest(
                            guard,
                            invocation,
                            guardFallback);

    final MethodHandle catchGuarded =
            exception == null ?
                    guarded :
                    MH.catchException(
                            guarded,
                            exception,
                            MethodHandles.dropArguments(
                                catchFallback,
                                0,
                                exception));

    if (switchPoints == null) {
        return catchGuarded;
    }

    MethodHandle spGuarded = catchGuarded;
    for (final SwitchPoint sp : switchPoints) {
        spGuarded = sp.guardWithTest(spGuarded, switchpointFallback);
    }

    return spGuarded;
}
Example 9
Source File: GuardedInvocation.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes the invocation, switchpoint, and the guard into a composite method handle that knows how to fall back.
 * @param switchpointFallback the fallback method handle in case switchpoint is invalidated.
 * @param guardFallback the fallback method handle in case guard returns false.
 * @param catchFallback the fallback method in case the exception handler triggers
 * @return a composite method handle.
 */
public MethodHandle compose(final MethodHandle guardFallback, final MethodHandle switchpointFallback, final MethodHandle catchFallback) {
    final MethodHandle guarded =
            guard == null ?
                    invocation :
                    MethodHandles.guardWithTest(
                            guard,
                            invocation,
                            guardFallback);

    final MethodHandle catchGuarded =
            exception == null ?
                    guarded :
                    MH.catchException(
                            guarded,
                            exception,
                            MethodHandles.dropArguments(
                                catchFallback,
                                0,
                                exception));

    if (switchPoints == null) {
        return catchGuarded;
    }

    MethodHandle spGuarded = catchGuarded;
    for (final SwitchPoint sp : switchPoints) {
        spGuarded = sp.guardWithTest(spGuarded, switchpointFallback);
    }

    return spGuarded;
}
Example 10
Source File: GuardedInvocation.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes the invocation, switchpoint, and the guard into a composite method handle that knows how to fall back.
 * @param switchpointFallback the fallback method handle in case switchpoint is invalidated.
 * @param guardFallback the fallback method handle in case guard returns false.
 * @param catchFallback the fallback method in case the exception handler triggers
 * @return a composite method handle.
 */
public MethodHandle compose(final MethodHandle guardFallback, final MethodHandle switchpointFallback, final MethodHandle catchFallback) {
    final MethodHandle guarded =
            guard == null ?
                    invocation :
                    MethodHandles.guardWithTest(
                            guard,
                            invocation,
                            guardFallback);

    final MethodHandle catchGuarded =
            exception == null ?
                    guarded :
                    MH.catchException(
                            guarded,
                            exception,
                            MethodHandles.dropArguments(
                                catchFallback,
                                0,
                                exception));

    if (switchPoints == null) {
        return catchGuarded;
    }

    MethodHandle spGuarded = catchGuarded;
    for (final SwitchPoint sp : switchPoints) {
        spGuarded = sp.guardWithTest(spGuarded, switchpointFallback);
    }

    return spGuarded;
}
Example 11
Source File: GuardedInvocation.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes the invocation, switchpoint, and the guard into a composite method handle that knows how to fall back.
 * @param switchpointFallback the fallback method handle in case switchpoint is invalidated.
 * @param guardFallback the fallback method handle in case guard returns false.
 * @param catchFallback the fallback method in case the exception handler triggers
 * @return a composite method handle.
 */
public MethodHandle compose(final MethodHandle guardFallback, final MethodHandle switchpointFallback, final MethodHandle catchFallback) {
    final MethodHandle guarded =
            guard == null ?
                    invocation :
                    MethodHandles.guardWithTest(
                            guard,
                            invocation,
                            guardFallback);

    final MethodHandle catchGuarded =
            exception == null ?
                    guarded :
                    MH.catchException(
                            guarded,
                            exception,
                            MethodHandles.dropArguments(
                                catchFallback,
                                0,
                                exception));

    if (switchPoints == null) {
        return catchGuarded;
    }

    MethodHandle spGuarded = catchGuarded;
    for (final SwitchPoint sp : switchPoints) {
        spGuarded = sp.guardWithTest(spGuarded, switchpointFallback);
    }

    return spGuarded;
}
Example 12
Source File: MethodHandleFactory.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    return sp.guardWithTest(before, after);
}
Example 13
Source File: MethodHandleFactory.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}
Example 14
Source File: MethodHandleFactory.java    From jdk8u_nashorn with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}
Example 15
Source File: MethodHandleFactory.java    From openjdk-jdk9 with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}
Example 16
Source File: MethodHandleFactory.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}
Example 17
Source File: MethodHandleFactory.java    From openjdk-jdk8u with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}
Example 18
Source File: LoggerImpl.java    From beautiful_logger with MIT License 4 votes vote down vote up 
@SuppressWarnings("unused")
private MethodHandle fallback(Level level, Throwable context, Object messageProvider, Object[] args) {
  Objects.requireNonNull(level, "level is null");
  Objects.requireNonNull(messageProvider, "message provider is null");      
  
  // check configuration flag 'enable'
  LinkedHashSet<SwitchPoint> switchPoints = new LinkedHashSet<>();
  boolean enable = ENABLE_CONF.findValueAndCollectSwitchPoints(configClass, switchPoints).orElse(true);
  
  MethodHandle target;
  MethodHandle empty = empty_void(type());
  if (enable) {
    // get configuration facade factory
    LogFacadeFactory logFacadeFactory = LOGFACADEFACTORY_CONF.findValueAndCollectSwitchPoints(configClass, switchPoints)
        .orElseGet(LogFacadeFactory::defaultFactory);
    LogFacade logFacade = logFacadeFactory.logFacade(configClass);
    MethodHandle logMH = logFacade.getLogMethodHandle();
    if (!logMH.type().equals(LOG_METHOD_TYPE)) {
      throw new WrongMethodTypeException("the print method handle should be typed (String, Level, Throwable)V ".concat(logMH.toString()));
    }
    
    // adjust to the number of parameters (+ the message provider)
    MethodHandle print = dropArguments(logMH, 3, nCopies(1 + maxParameters, Object.class));
    
    // create the message provider call site, we already have the arguments of the first call here,
    // so we can directly call the fallback to avoid an unnecessary round trip 
    MessageProviderCS providerCallSite = new MessageProviderCS(type(), maxParameters, print); 
    providerCallSite.fallback(messageProvider, args);
    target = providerCallSite.getTarget();
    
    // check configuration level, override the underlying logger level if necessary
    Level configLevel = LEVEL_CONF.findValueAndCollectSwitchPoints(configClass, switchPoints).orElse(Level.INFO);
    if (LEVEL_OVERRIDE_CONF.findValueAndCollectSwitchPoints(configClass, switchPoints).orElse(false)) {
      logFacade.overrideLevel(configLevel);
    }
    target = guardWithTest(CHECK_LEVELS[configLevel.ordinal()], target, empty);
    
  } else {
    // if disable, do nothing !
    target = empty;
  }
  
  // avoid recursion (i.e. non progression) if the switch points are invalidated
  // between the time the configuration is read and the time the method handle is installed
  MethodHandle result = target;
  
  // prepend switch points
  for(SwitchPoint switchPoint: switchPoints) {
    target = switchPoint.guardWithTest(target, fallback);
  }
  
  setTarget(target);
  return result;
}
Example 19
Source File: MethodHandleFactory.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}
Example 20
Source File: MethodHandleFactory.java    From TencentKona-8 with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public MethodHandle guardWithTest(final SwitchPoint sp, final MethodHandle before, final MethodHandle after) {
    final MethodHandle mh = sp.guardWithTest(before, after);
    return debug(mh, "guardWithTest", sp, before, after);
}