Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotVMConfigAccess.java @ 23732:5dae5deb92fb
8162477: [JVMCI] assert(wf.check_method_context(ctxk, m)) failed: proper context
Reviewed-by: kvn
author | never |
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date | Tue, 02 Aug 2016 17:12:16 -0700 |
parents | 9e1235406b59 |
children | 724fbad94ee3 |
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/* * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package jdk.vm.ci.hotspot; import jdk.vm.ci.common.JVMCIError; /** * Access to VM configuration data. */ public class HotSpotVMConfigAccess { /** * Gets the address of a C++ symbol. * * @param name name of C++ symbol * @param notPresent if non-null and the symbol is not present then this value is returned * @return the address of the symbol * @throws JVMCIError if the symbol is not present and {@code notPresent == null} */ public long getAddress(String name, Long notPresent) { Long entry = store.vmAddresses.get(name); if (entry == null) { if (notPresent != null) { return notPresent; } throw new JVMCIError("expected VM symbol not found: " + name); } return entry; } /** * Gets the address of a C++ symbol. * * @param name name of C++ symbol * @return the address of the symbol * @throws JVMCIError if the symbol is not present */ public long getAddress(String name) { return getAddress(name, null); } /** * Gets the size of a C++ type. * * @param name name of the type * @return the size in bytes of the requested field * @throws JVMCIError if the field is not present and {@code notPresent} is null */ public int getTypeSize(String name) { Long entry = store.vmTypeSizes.get(name); if (entry == null) { throw new JVMCIError("expected VM type not found: " + name); } return (int) (long) entry; } /** * Gets the value of a C++ constant. * * @param name name of the constant (e.g., {@code "frame::arg_reg_save_area_bytes"}) * @param type the boxed type to which the constant value will be converted * @param notPresent if non-null and the constant is not present then this value is returned * @return the constant value converted to {@code type} * @throws JVMCIError if the constant is not present and {@code notPresent == null} */ public <T> T getConstant(String name, Class<T> type, T notPresent) { Long c = store.vmConstants.get(name); if (c == null) { if (notPresent != null) { return notPresent; } throw new JVMCIError("expected VM constant not found: " + name); } return type.cast(convertValue(name, type, c, null)); } /** * Gets the value of a C++ constant. * * @param name name of the constant (e.g., {@code "frame::arg_reg_save_area_bytes"}) * @param type the boxed type to which the constant value will be converted * @return the constant value converted to {@code type} * @throws JVMCIError if the constant is not present */ public <T> T getConstant(String name, Class<T> type) { return getConstant(name, type, null); } /** * Gets the offset of a non-static C++ field. * * @param name fully qualified name of the field * @param type the boxed type to which the offset value will be converted (must be * {@link Integer} or {@link Long}) * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @param notPresent if non-null and the field is not present then this value is returned * @return the offset in bytes of the requested field * @throws JVMCIError if the field is static or not present and {@code notPresent} is null */ public <T> T getFieldOffset(String name, Class<T> type, String cppType, T notPresent) { assert type == Integer.class || type == Long.class; VMField entry = getField(name, cppType, notPresent == null); if (entry == null) { return notPresent; } if (entry.address != 0) { throw new JVMCIError("cannot get offset of static field " + name); } return type.cast(convertValue(name, type, entry.offset, cppType)); } /** * Gets the offset of a non-static C++ field. * * @param name fully qualified name of the field * @param type the boxed type to which the offset value will be converted (must be * {@link Integer} or {@link Long}) * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @return the offset in bytes of the requested field * @throws JVMCIError if the field is static or not present */ public <T> T getFieldOffset(String name, Class<T> type, String cppType) { return getFieldOffset(name, type, cppType, null); } /** * Gets the offset of a non-static C++ field. * * @param name fully qualified name of the field * @param type the boxed type to which the offset value will be converted (must be * {@link Integer} or {@link Long}) * @return the offset in bytes of the requested field * @throws JVMCIError if the field is static or not present */ public <T> T getFieldOffset(String name, Class<T> type) { return getFieldOffset(name, type, null, null); } /** * Gets the address of a static C++ field. * * @param name fully qualified name of the field * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @param notPresent if non-null and the field is not present then this value is returned * @return the address of the requested field * @throws JVMCIError if the field is not static or not present and {@code notPresent} is null */ public long getFieldAddress(String name, String cppType, Long notPresent) { VMField entry = getField(name, cppType, notPresent == null); if (entry == null) { return notPresent; } if (entry.address == 0) { throw new JVMCIError(name + " is not a static field"); } return entry.address; } /** * Gets the address of a static C++ field. * * @param name fully qualified name of the field * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @return the address of the requested field * @throws JVMCIError if the field is not static or not present */ public long getFieldAddress(String name, String cppType) { return getFieldAddress(name, cppType, null); } /** * Gets the value of a static C++ field. * * @param name fully qualified name of the field * @param type the boxed type to which the constant value will be converted * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @param notPresent if non-null and the field is not present then this value is returned * @return the value of the requested field * @throws JVMCIError if the field is not static or not present and {@code notPresent} is null */ public <T> T getFieldValue(String name, Class<T> type, String cppType, T notPresent) { VMField entry = getField(name, cppType, notPresent == null); if (entry == null) { return notPresent; } if (entry.value == null) { throw new JVMCIError(name + " is not a static field"); } return type.cast(convertValue(name, type, entry.value, cppType)); } /** * Gets the value of a static C++ field. * * @param name fully qualified name of the field * @param type the boxed type to which the constant value will be converted * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @return the value of the requested field * @throws JVMCIError if the field is not static or not present */ public <T> T getFieldValue(String name, Class<T> type, String cppType) { return getFieldValue(name, type, cppType, null); } /** * Gets the value of a static C++ field. * * @param name fully qualified name of the field * @param type the boxed type to which the constant value will be converted * @return the value of the requested field * @throws JVMCIError if the field is not static or not present */ public <T> T getFieldValue(String name, Class<T> type) { return getFieldValue(name, type, null, null); } /** * Gets a C++ field. * * @param name fully qualified name of the field * @param cppType if non-null, the expected C++ type of the field (e.g., {@code "HeapWord*"}) * @param required specifies if the field must be present * @return the field * @throws JVMCIError if the field is not present and {@code required == true} */ private VMField getField(String name, String cppType, boolean required) { VMField entry = store.vmFields.get(name); if (entry == null) { if (!required) { return null; } throw new JVMCIError("expected VM field not found: " + name); } // Make sure the native type is still the type we expect. if (cppType != null && !cppType.equals(entry.type)) { throw new JVMCIError("expected type " + cppType + " but VM field " + name + " is of type " + entry.type); } return entry; } /** * Gets a VM flag value. * * @param name name of the flag (e.g., {@code "CompileTheWorldStartAt"}) * @param type the boxed type to which the flag's value will be converted * @return the flag's value converted to {@code type} or {@code notPresent} if the flag is not * present * @throws JVMCIError if the flag is not present */ public <T> T getFlag(String name, Class<T> type) { return getFlag(name, type, null); } /** * Gets a VM flag value. * * @param name name of the flag (e.g., {@code "CompileTheWorldStartAt"}) * @param type the boxed type to which the flag's value will be converted * @param notPresent if non-null and the flag is not present then this value is returned * @return the flag's value converted to {@code type} or {@code notPresent} if the flag is not * present * @throws JVMCIError if the flag is not present and {@code notPresent == null} */ public <T> T getFlag(String name, Class<T> type, T notPresent) { VMFlag entry = store.vmFlags.get(name); if (entry == null) { if (notPresent != null) { return notPresent; } throw new JVMCIError("expected VM flag not found: " + name); } return type.cast(convertValue(name, type, entry.value, entry.type)); } private static <T> Object convertValue(String name, Class<T> toType, Object value, String cppType) throws JVMCIError { if (toType == Boolean.class) { if (value instanceof String) { return Boolean.valueOf((String) value); } else if (value instanceof Boolean) { return value; } else if (value instanceof Long) { return ((long) value) != 0; } } else if (toType == Byte.class) { if (value instanceof Long) { return (byte) (long) value; } } else if (toType == Integer.class) { if (value instanceof Integer) { return value; } else if (value instanceof Long) { return (int) (long) value; } } else if (toType == Long.class) { return value; } throw new JVMCIError("cannot convert " + name + " of type " + value.getClass().getSimpleName() + (cppType == null ? "" : " [" + cppType + "]") + " to " + toType.getSimpleName()); } private final HotSpotVMConfigStore store; public HotSpotVMConfigAccess(HotSpotVMConfigStore store) { this.store = store; } }