Java Code Examples for jdk.nashorn.internal.lookup.Lookup#filterReturnType()
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jdk.nashorn.internal.lookup.Lookup#filterReturnType() .
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Example 1
Source File: ContinuousArrayData.java From jdk8u_nashorn with GNU General Public License v2.0 | 6 votes |
/** * Return element getter for a {@link ContinuousArrayData} * @param clazz clazz for exact type guard * @param getHas has getter * @param returnType return type * @param programPoint program point * @return method handle for element setter */ protected MethodHandle getContinuousElementGetter(final Class<? extends ContinuousArrayData> clazz, final MethodHandle getHas, final Class<?> returnType, final int programPoint) { final boolean isOptimistic = isValid(programPoint); final int fti = getAccessorTypeIndex(getHas.type().returnType()); final int ti = getAccessorTypeIndex(returnType); MethodHandle mh = getHas; if (isOptimistic) { if (ti < fti) { mh = MH.insertArguments(ArrayData.THROW_UNWARRANTED.methodHandle(), 1, programPoint); } } mh = MH.asType(mh, mh.type().changeReturnType(returnType).changeParameterType(0, clazz)); if (!isOptimistic) { //for example a & array[17]; return Lookup.filterReturnType(mh, returnType); } return mh; }
Example 2
Source File: ContinuousArrayData.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
/** * Return element getter for a {@link ContinuousArrayData} * @param clazz clazz for exact type guard * @param getHas has getter * @param returnType return type * @param programPoint program point * @return method handle for element setter */ protected MethodHandle getContinuousElementGetter(final Class<? extends ContinuousArrayData> clazz, final MethodHandle getHas, final Class<?> returnType, final int programPoint) { final boolean isOptimistic = isValid(programPoint); final int fti = getAccessorTypeIndex(getHas.type().returnType()); final int ti = getAccessorTypeIndex(returnType); MethodHandle mh = getHas; if (isOptimistic) { if (ti < fti) { mh = MH.insertArguments(ArrayData.THROW_UNWARRANTED.methodHandle(), 1, programPoint); } } mh = MH.asType(mh, mh.type().changeReturnType(returnType).changeParameterType(0, clazz)); if (!isOptimistic) { //for example a & array[17]; return Lookup.filterReturnType(mh, returnType); } return mh; }
Example 3
Source File: ContinuousArrayData.java From hottub with GNU General Public License v2.0 | 6 votes |
/** * Return element getter for a {@link ContinuousArrayData} * @param clazz clazz for exact type guard * @param getHas has getter * @param returnType return type * @param programPoint program point * @return method handle for element setter */ protected MethodHandle getContinuousElementGetter(final Class<? extends ContinuousArrayData> clazz, final MethodHandle getHas, final Class<?> returnType, final int programPoint) { final boolean isOptimistic = isValid(programPoint); final int fti = getAccessorTypeIndex(getHas.type().returnType()); final int ti = getAccessorTypeIndex(returnType); MethodHandle mh = getHas; if (isOptimistic) { if (ti < fti) { mh = MH.insertArguments(ArrayData.THROW_UNWARRANTED.methodHandle(), 1, programPoint); } } mh = MH.asType(mh, mh.type().changeReturnType(returnType).changeParameterType(0, clazz)); if (!isOptimistic) { //for example a & array[17]; return Lookup.filterReturnType(mh, returnType); } return mh; }
Example 4
Source File: ContinuousArrayData.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
/** * Return element getter for a {@link ContinuousArrayData} * @param clazz clazz for exact type guard * @param getHas has getter * @param returnType return type * @param programPoint program point * @return method handle for element setter */ protected MethodHandle getContinuousElementGetter(final Class<? extends ContinuousArrayData> clazz, final MethodHandle getHas, final Class<?> returnType, final int programPoint) { final boolean isOptimistic = isValid(programPoint); final int fti = getAccessorTypeIndex(getHas.type().returnType()); final int ti = getAccessorTypeIndex(returnType); MethodHandle mh = getHas; if (isOptimistic) { if (ti < fti) { mh = MH.insertArguments(ArrayData.THROW_UNWARRANTED.methodHandle(), 1, programPoint); } } mh = MH.asType(mh, mh.type().changeReturnType(returnType).changeParameterType(0, clazz)); if (!isOptimistic) { //for example a & array[17]; return Lookup.filterReturnType(mh, returnType); } return mh; }
Example 5
Source File: TypedArrayData.java From TencentKona-8 with GNU General Public License v2.0 | 5 votes |
@Override public MethodHandle getElementGetter(final Class<?> returnType, final int programPoint) { final MethodHandle getter = getContinuousElementGetter(getClass(), getGetElem(), returnType, programPoint); if (getter != null) { return Lookup.filterReturnType(getter, returnType); } return getter; }
Example 6
Source File: TypedArrayData.java From jdk8u_nashorn with GNU General Public License v2.0 | 5 votes |
@Override public MethodHandle getElementGetter(final Class<?> returnType, final int programPoint) { final MethodHandle getter = getContinuousElementGetter(getClass(), getGetElem(), returnType, programPoint); if (getter != null) { return Lookup.filterReturnType(getter, returnType); } return getter; }
Example 7
Source File: TypedArrayData.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
@Override public MethodHandle getElementGetter(final Class<?> returnType, final int programPoint) { final MethodHandle getter = getContinuousElementGetter(getClass(), getGetElem(), returnType, programPoint); if (getter != null) { return Lookup.filterReturnType(getter, returnType); } return getter; }
Example 8
Source File: UserAccessorProperty.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { //this returns a getter on the format (Accessors, Object receiver) return Lookup.filterReturnType(INVOKE_OBJECT_GETTER, type); }
Example 9
Source File: UserAccessorProperty.java From hottub with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { //this returns a getter on the format (Accessors, Object receiver) return Lookup.filterReturnType(INVOKE_OBJECT_GETTER, type); }
Example 10
Source File: UserAccessorProperty.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { //this returns a getter on the format (Accessors, Object receiver) return Lookup.filterReturnType(INVOKE_OBJECT_GETTER, type); }
Example 11
Source File: GlobalConstants.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
/** * Try to turn a getter into a MethodHandle.constant, if possible * * @param find property lookup * @param receiver receiver * @param desc callsite descriptor * * @return resulting getter, or null if failed to create constant */ GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) { // Only use constant getter for fast scope access, because the receiver may change between invocations // for slow-scope and non-scope callsites. // Also return null for user accessor properties as they may have side effects. if (invalidatedForever.get() || !NashornCallSiteDescriptor.isFastScope(desc) || (GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) { return null; } final boolean isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc); final int programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT; final Class<?> retType = desc.getMethodType().returnType(); final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); synchronized (this) { final Access acc = getOrCreateSwitchPoint(name); log.fine("Starting to look up object value " + name); final Object c = find.getObjectValue(); if (log.isEnabled()) { log.fine("Trying to link constant GETTER " + acc + " value = " + c); } if (acc.hasBeenInvalidated() || acc.guardFailed() || invalidatedForever.get()) { if (log.isEnabled()) { log.info("*** GET: Giving up on " + quote(name) + " - retry count has exceeded " + DynamicLinker.getLinkedCallSiteLocation()); } return null; } final MethodHandle cmh = constantGetter(c); MethodHandle mh; MethodHandle guard; if (isOptimistic) { if (JSType.getAccessorTypeIndex(cmh.type().returnType()) <= JSType.getAccessorTypeIndex(retType)) { //widen return type - this is pessimistic, so it will always work mh = MH.asType(cmh, cmh.type().changeReturnType(retType)); } else { //immediately invalidate - we asked for a too wide constant as a narrower one mh = MH.dropArguments(MH.insertArguments(JSType.THROW_UNWARRANTED.methodHandle(), 0, c, programPoint), 0, Object.class); } } else { //pessimistic return type filter mh = Lookup.filterReturnType(cmh, retType); } if (find.getOwner().isGlobal()) { guard = null; } else { guard = MH.insertArguments(RECEIVER_GUARD, 0, acc, receiver); } if (log.isEnabled()) { log.info("Linked getter " + quote(name) + " as MethodHandle.constant() -> " + c + " " + acc.getSwitchPoint()); mh = MethodHandleFactory.addDebugPrintout(log, Level.FINE, mh, "get const " + acc); } return new GuardedInvocation(mh, guard, acc.getSwitchPoint(), null); } }
Example 12
Source File: UserAccessorProperty.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { return Lookup.filterReturnType(USER_ACCESSOR_GETTER.methodHandle(), type); }
Example 13
Source File: GlobalConstants.java From jdk8u_nashorn with GNU General Public License v2.0 | 4 votes |
/** * Try to turn a getter into a MethodHandle.constant, if possible * * @param find property lookup * @param receiver receiver * @param desc callsite descriptor * * @return resulting getter, or null if failed to create constant */ GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) { // Only use constant getter for fast scope access, because the receiver may change between invocations // for slow-scope and non-scope callsites. // Also return null for user accessor properties as they may have side effects. if (invalidatedForever.get() || !NashornCallSiteDescriptor.isFastScope(desc) || (GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) { return null; } final boolean isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc); final int programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT; final Class<?> retType = desc.getMethodType().returnType(); final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); synchronized (this) { final Access acc = getOrCreateSwitchPoint(name); log.fine("Starting to look up object value " + name); final Object c = find.getObjectValue(); if (log.isEnabled()) { log.fine("Trying to link constant GETTER " + acc + " value = " + c); } if (acc.hasBeenInvalidated() || acc.guardFailed() || invalidatedForever.get()) { if (log.isEnabled()) { log.info("*** GET: Giving up on " + quote(name) + " - retry count has exceeded " + DynamicLinker.getLinkedCallSiteLocation()); } return null; } final MethodHandle cmh = constantGetter(c); MethodHandle mh; MethodHandle guard; if (isOptimistic) { if (JSType.getAccessorTypeIndex(cmh.type().returnType()) <= JSType.getAccessorTypeIndex(retType)) { //widen return type - this is pessimistic, so it will always work mh = MH.asType(cmh, cmh.type().changeReturnType(retType)); } else { //immediately invalidate - we asked for a too wide constant as a narrower one mh = MH.dropArguments(MH.insertArguments(JSType.THROW_UNWARRANTED.methodHandle(), 0, c, programPoint), 0, Object.class); } } else { //pessimistic return type filter mh = Lookup.filterReturnType(cmh, retType); } if (find.getOwner().isGlobal()) { guard = null; } else { guard = MH.insertArguments(RECEIVER_GUARD, 0, acc, receiver); } if (log.isEnabled()) { log.info("Linked getter " + quote(name) + " as MethodHandle.constant() -> " + c + " " + acc.getSwitchPoint()); mh = MethodHandleFactory.addDebugPrintout(log, Level.FINE, mh, "get const " + acc); } return new GuardedInvocation(mh, guard, acc.getSwitchPoint(), null); } }
Example 14
Source File: GlobalConstants.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
/** * Try to turn a getter into a MethodHandle.constant, if possible * * @param find property lookup * @param receiver receiver * @param desc callsite descriptor * * @return resulting getter, or null if failed to create constant */ GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) { // Only use constant getter for fast scope access, because the receiver may change between invocations // for slow-scope and non-scope callsites. // Also return null for user accessor properties as they may have side effects. if (invalidatedForever.get() || !NashornCallSiteDescriptor.isFastScope(desc) || (GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) { return null; } final boolean isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc); final int programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT; final Class<?> retType = desc.getMethodType().returnType(); final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); synchronized (this) { final Access acc = getOrCreateSwitchPoint(name); log.fine("Starting to look up object value " + name); final Object c = find.getObjectValue(); if (log.isEnabled()) { log.fine("Trying to link constant GETTER " + acc + " value = " + c); } if (acc.hasBeenInvalidated() || acc.guardFailed() || invalidatedForever.get()) { if (log.isEnabled()) { log.info("*** GET: Giving up on " + quote(name) + " - retry count has exceeded " + DynamicLinker.getLinkedCallSiteLocation()); } return null; } final MethodHandle cmh = constantGetter(c); MethodHandle mh; MethodHandle guard; if (isOptimistic) { if (JSType.getAccessorTypeIndex(cmh.type().returnType()) <= JSType.getAccessorTypeIndex(retType)) { //widen return type - this is pessimistic, so it will always work mh = MH.asType(cmh, cmh.type().changeReturnType(retType)); } else { //immediately invalidate - we asked for a too wide constant as a narrower one mh = MH.dropArguments(MH.insertArguments(JSType.THROW_UNWARRANTED.methodHandle(), 0, c, programPoint), 0, Object.class); } } else { //pessimistic return type filter mh = Lookup.filterReturnType(cmh, retType); } if (find.getOwner().isGlobal()) { guard = null; } else { guard = MH.insertArguments(RECEIVER_GUARD, 0, acc, receiver); } if (log.isEnabled()) { log.info("Linked getter " + quote(name) + " as MethodHandle.constant() -> " + c + " " + acc.getSwitchPoint()); mh = MethodHandleFactory.addDebugPrintout(log, Level.FINE, mh, "get const " + acc); } return new GuardedInvocation(mh, guard, acc.getSwitchPoint(), null); } }
Example 15
Source File: GlobalConstants.java From hottub with GNU General Public License v2.0 | 4 votes |
/** * Try to turn a getter into a MethodHandle.constant, if possible * * @param find property lookup * @param receiver receiver * @param desc callsite descriptor * * @return resulting getter, or null if failed to create constant */ GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) { // Only use constant getter for fast scope access, because the receiver may change between invocations // for slow-scope and non-scope callsites. // Also return null for user accessor properties as they may have side effects. if (invalidatedForever.get() || !NashornCallSiteDescriptor.isFastScope(desc) || (GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) { return null; } final boolean isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc); final int programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT; final Class<?> retType = desc.getMethodType().returnType(); final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); synchronized (this) { final Access acc = getOrCreateSwitchPoint(name); log.fine("Starting to look up object value " + name); final Object c = find.getObjectValue(); if (log.isEnabled()) { log.fine("Trying to link constant GETTER " + acc + " value = " + c); } if (acc.hasBeenInvalidated() || acc.guardFailed() || invalidatedForever.get()) { if (log.isEnabled()) { log.info("*** GET: Giving up on " + quote(name) + " - retry count has exceeded " + DynamicLinker.getLinkedCallSiteLocation()); } return null; } final MethodHandle cmh = constantGetter(c); MethodHandle mh; MethodHandle guard; if (isOptimistic) { if (JSType.getAccessorTypeIndex(cmh.type().returnType()) <= JSType.getAccessorTypeIndex(retType)) { //widen return type - this is pessimistic, so it will always work mh = MH.asType(cmh, cmh.type().changeReturnType(retType)); } else { //immediately invalidate - we asked for a too wide constant as a narrower one mh = MH.dropArguments(MH.insertArguments(JSType.THROW_UNWARRANTED.methodHandle(), 0, c, programPoint), 0, Object.class); } } else { //pessimistic return type filter mh = Lookup.filterReturnType(cmh, retType); } if (find.getOwner().isGlobal()) { guard = null; } else { guard = MH.insertArguments(RECEIVER_GUARD, 0, acc, receiver); } if (log.isEnabled()) { log.info("Linked getter " + quote(name) + " as MethodHandle.constant() -> " + c + " " + acc.getSwitchPoint()); mh = MethodHandleFactory.addDebugPrintout(log, Level.FINE, mh, "get const " + acc); } return new GuardedInvocation(mh, guard, acc.getSwitchPoint(), null); } }
Example 16
Source File: UserAccessorProperty.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { //this returns a getter on the format (Accessors, Object receiver) return Lookup.filterReturnType(INVOKE_OBJECT_GETTER, type); }
Example 17
Source File: GlobalConstants.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
/** * Try to turn a getter into a MethodHandle.constant, if possible * * @param find property lookup * @param receiver receiver * @param desc callsite descriptor * * @return resulting getter, or null if failed to create constant */ GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) { // Only use constant getter for fast scope access, because the receiver may change between invocations // for slow-scope and non-scope callsites. // Also return null for user accessor properties as they may have side effects. if (invalidatedForever.get() || !NashornCallSiteDescriptor.isFastScope(desc) || (GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) { return null; } final boolean isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc); final int programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT; final Class<?> retType = desc.getMethodType().returnType(); final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); synchronized (this) { final Access acc = getOrCreateSwitchPoint(name); log.fine("Starting to look up object value " + name); final Object c = find.getObjectValue(); if (log.isEnabled()) { log.fine("Trying to link constant GETTER " + acc + " value = " + c); } if (acc.hasBeenInvalidated() || acc.guardFailed() || invalidatedForever.get()) { if (log.isEnabled()) { log.info("*** GET: Giving up on " + quote(name) + " - retry count has exceeded " + DynamicLinker.getLinkedCallSiteLocation()); } return null; } final MethodHandle cmh = constantGetter(c); MethodHandle mh; MethodHandle guard; if (isOptimistic) { if (JSType.getAccessorTypeIndex(cmh.type().returnType()) <= JSType.getAccessorTypeIndex(retType)) { //widen return type - this is pessimistic, so it will always work mh = MH.asType(cmh, cmh.type().changeReturnType(retType)); } else { //immediately invalidate - we asked for a too wide constant as a narrower one mh = MH.dropArguments(MH.insertArguments(JSType.THROW_UNWARRANTED.methodHandle(), 0, c, programPoint), 0, Object.class); } } else { //pessimistic return type filter mh = Lookup.filterReturnType(cmh, retType); } if (find.getOwner().isGlobal()) { guard = null; } else { guard = MH.insertArguments(RECEIVER_GUARD, 0, acc, receiver); } if (log.isEnabled()) { log.info("Linked getter " + quote(name) + " as MethodHandle.constant() -> " + c + " " + acc.getSwitchPoint()); mh = MethodHandleFactory.addDebugPrintout(log, Level.FINE, mh, "get const " + acc); } return new GuardedInvocation(mh, guard, acc.getSwitchPoint(), null); } }
Example 18
Source File: UserAccessorProperty.java From jdk8u_nashorn with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { //this returns a getter on the format (Accessors, Object receiver) return Lookup.filterReturnType(INVOKE_OBJECT_GETTER, type); }
Example 19
Source File: UserAccessorProperty.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
@Override public MethodHandle getGetter(final Class<?> type) { //this returns a getter on the format (Accessors, Object receiver) return Lookup.filterReturnType(INVOKE_OBJECT_GETTER, type); }
Example 20
Source File: GlobalConstants.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
/** * Try to turn a getter into a MethodHandle.constant, if possible * * @param find property lookup * @param receiver receiver * @param desc callsite descriptor * * @return resulting getter, or null if failed to create constant */ GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) { // Only use constant getter for fast scope access, because the receiver may change between invocations // for slow-scope and non-scope callsites. // Also return null for user accessor properties as they may have side effects. if (invalidatedForever.get() || !NashornCallSiteDescriptor.isFastScope(desc) || (GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) { return null; } final boolean isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc); final int programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT; final Class<?> retType = desc.getMethodType().returnType(); final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); synchronized (this) { final Access acc = getOrCreateSwitchPoint(name); log.fine("Starting to look up object value " + name); final Object c = find.getObjectValue(); if (log.isEnabled()) { log.fine("Trying to link constant GETTER " + acc + " value = " + c); } if (acc.hasBeenInvalidated() || acc.guardFailed() || invalidatedForever.get()) { if (log.isEnabled()) { log.info("*** GET: Giving up on " + quote(name) + " - retry count has exceeded " + DynamicLinker.getLinkedCallSiteLocation()); } return null; } final MethodHandle cmh = constantGetter(c); MethodHandle mh; MethodHandle guard; if (isOptimistic) { if (JSType.getAccessorTypeIndex(cmh.type().returnType()) <= JSType.getAccessorTypeIndex(retType)) { //widen return type - this is pessimistic, so it will always work mh = MH.asType(cmh, cmh.type().changeReturnType(retType)); } else { //immediately invalidate - we asked for a too wide constant as a narrower one mh = MH.dropArguments(MH.insertArguments(JSType.THROW_UNWARRANTED.methodHandle(), 0, c, programPoint), 0, Object.class); } } else { //pessimistic return type filter mh = Lookup.filterReturnType(cmh, retType); } if (find.getOwner().isGlobal()) { guard = null; } else { guard = MH.insertArguments(RECEIVER_GUARD, 0, acc, receiver); } if (log.isEnabled()) { log.info("Linked getter " + quote(name) + " as MethodHandle.constant() -> " + c + " " + acc.getSwitchPoint()); mh = MethodHandleFactory.addDebugPrintout(log, Level.FINE, mh, "get const " + acc); } return new GuardedInvocation(mh, guard, acc.getSwitchPoint(), null); } }