Mercurial > hg > graal-compiler
annotate graal/com.oracle.max.cri/src/com/sun/cri/ri/RiRuntime.java @ 3733:e233f5660da4
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author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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children | feb590a8497f |
rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.cri.ri; |
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24 |
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25 import java.lang.reflect.*; |
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26 |
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27 import com.sun.cri.ci.*; |
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28 |
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29 /** |
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30 * Encapsulates the main functionality of the runtime for the compiler, including access |
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31 * to constant pools, OSR frames, inlining requirements, and runtime calls such as checkcast. |
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32 s */ |
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33 public interface RiRuntime { |
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34 |
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35 /** |
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36 * Checks whether the specified method is required to be inlined (for semantic reasons). |
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37 * If this method returns true, then the null-check of the receiver emitted during |
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38 * inlining is omitted. |
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39 * |
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40 * @param method the method being called |
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41 * @return {@code true} if the method must be inlined; {@code false} to let the compiler |
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42 * use its own heuristics |
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43 */ |
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44 boolean mustInline(RiResolvedMethod method); |
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45 |
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46 /** |
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47 * Checks whether the specified method must not be inlined (for semantic reasons). |
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48 * @param method the method being called |
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49 * @return {@code true} if the method must not be inlined; {@code false} to let the compiler |
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50 * use its own heuristics |
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51 */ |
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52 boolean mustNotInline(RiResolvedMethod method); |
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53 |
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54 /** |
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55 * Checks whether the specified method cannot be compiled. |
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56 * @param method the method being called |
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57 * @return {@code true} if the method cannot be compiled |
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58 */ |
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59 boolean mustNotCompile(RiResolvedMethod method); |
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60 |
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61 /** |
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62 * Offset of the lock within the lock object on the stack. |
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63 |
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64 * Note: superseded by sizeOfLockData() in Graal. |
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65 * |
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66 * @return the offset in bytes |
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67 */ |
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68 int basicObjectLockOffsetInBytes(); |
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69 |
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70 /** |
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71 * Get the size in bytes of a lock object on the stack. |
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72 * |
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73 * Note: superseded by sizeOfLockData() in Graal. |
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74 */ |
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75 int sizeOfBasicObjectLock(); |
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76 |
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77 /** |
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78 * Get the size in bytes for locking information on the stack. |
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79 */ |
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80 int sizeOfLockData(); |
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81 |
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82 /** |
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83 * The offset of the normal entry to the code. The compiler inserts NOP instructions to satisfy this constraint. |
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84 * |
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85 * @return the code offset in bytes |
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86 */ |
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87 int codeOffset(); |
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88 |
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89 /** |
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90 * Returns the disassembly of the given code bytes. Used for debugging purposes only. |
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91 * |
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92 * @param code the code bytes that should be disassembled |
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93 * @param address an address at which the bytes are located. This can be used for an address prefix per line of disassembly. |
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94 * @return the disassembly. This will be of length 0 if the runtime does not support disassembling. |
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95 */ |
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96 String disassemble(byte[] code, long address); |
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97 |
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98 /** |
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99 * Returns the disassembly of the given code bytes. Used for debugging purposes only. |
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100 * |
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101 * @param targetMethod the {@link CiTargetMethod} containing the code bytes that should be disassembled |
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102 * @return the disassembly. This will be of length 0 if the runtime does not support disassembling. |
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103 */ |
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104 String disassemble(CiTargetMethod targetMethod); |
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105 |
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106 /** |
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107 * Returns the disassembly of the given method in a {@code javap}-like format. |
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108 * Used for debugging purposes only. |
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109 * |
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110 * @param method the method that should be disassembled |
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111 * @return the disassembly. This will be of length 0 if the runtime does not support disassembling. |
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112 */ |
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113 String disassemble(RiResolvedMethod method); |
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114 |
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115 /** |
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116 * Registers the given compiler stub and returns an object that can be used to identify it in the relocation |
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117 * information. |
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118 * |
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119 * @param targetMethod the target method representing the code of the compiler stub |
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120 * @param name the name of the stub, used for debugging purposes only |
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121 * @return the identification object |
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122 */ |
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123 Object registerCompilerStub(CiTargetMethod targetMethod, String name); |
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124 |
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125 /** |
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126 * Returns the RiType object representing the base type for the given kind. |
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127 */ |
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128 RiResolvedType asRiType(CiKind kind); |
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129 |
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130 /** |
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131 * Returns the type of the given constant object. |
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132 * |
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133 * @return {@code null} if {@code constant.isNull() || !constant.kind.isObject()} |
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134 */ |
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135 RiResolvedType getTypeOf(CiConstant constant); |
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136 |
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137 |
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138 RiResolvedType getType(Class<?> clazz); |
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139 |
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140 /** |
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141 * Returns true if the given type is a subtype of java/lang/Throwable. |
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142 */ |
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143 boolean isExceptionType(RiResolvedType type); |
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144 |
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145 /** |
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146 * Checks whether this method is foldable (i.e. if it is a pure function without side effects). |
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147 * @param method the method that is checked |
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148 * @return whether the method is foldable |
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149 */ |
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150 boolean isFoldable(RiResolvedMethod method); |
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151 |
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152 /** |
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153 * Attempts to compile-time evaluate or "fold" a call to a given method. A foldable method is a pure function |
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154 * that has no side effects. Such methods can be executed via reflection when all their inputs are constants, |
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155 * and the resulting value is substituted for the method call. May only be called on methods for which |
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156 * isFoldable(method) returns {@code true}. The array of constant for arguments may contain {@code null} values, which |
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157 * means that this particular argument does not evaluate to a compile time constant. |
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158 * |
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159 * @param method the compiler interface method for which folding is being requested |
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160 * @param args the arguments to the call as an array of CiConstant objects |
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161 * @return the result of the folding or {@code null} if no folding occurred |
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162 */ |
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163 CiConstant fold(RiResolvedMethod method, CiConstant[] args); |
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164 |
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165 /** |
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166 * Used by the canonicalizer to compare objects, since a given runtime might not want to expose the real objects to the compiler. |
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167 * |
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168 * @return true if the two parameters represent the same runtime object, false otherwise |
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169 */ |
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170 boolean areConstantObjectsEqual(CiConstant x, CiConstant y); |
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171 |
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172 /** |
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173 * Gets the register configuration to use when compiling a given method. |
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174 * |
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175 * @param method the top level method of a compilation |
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176 */ |
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177 RiRegisterConfig getRegisterConfig(RiMethod method); |
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178 |
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179 /** |
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180 * Custom area on the stack of each compiled method that the VM can use for its own purposes. |
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181 * @return the size of the custom area in bytes |
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182 */ |
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183 int getCustomStackAreaSize(); |
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184 |
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185 /** |
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186 * Gets the length of the array that is wrapped in a CiConstant object. |
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187 */ |
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188 int getArrayLength(CiConstant array); |
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189 |
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190 /** |
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191 * Converts the given CiConstant object to a object. |
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192 * |
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193 * @return {@code null} if the conversion is not possible <b>OR</b> {@code c.isNull() == true} |
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194 */ |
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195 Object asJavaObject(CiConstant c); |
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196 |
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197 /** |
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198 * Converts the given CiConstant object to a {@link Class} object. |
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199 * |
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200 * @return {@code null} if the conversion is not possible. |
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201 */ |
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202 Class<?> asJavaClass(CiConstant c); |
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203 |
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204 /** |
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205 * Performs any runtime-specific conversion on the object used to describe the target of a call. |
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206 */ |
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207 Object asCallTarget(Object target); |
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208 |
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209 /** |
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210 * Returns the maximum absolute offset of a runtime call target from any position in the code cache or -1 |
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211 * when not known or not applicable. Intended for determining the required size of address/offset fields. |
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212 */ |
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213 long getMaxCallTargetOffset(CiRuntimeCall rtcall); |
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214 |
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215 /** |
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216 * Provides the {@link RiMethod} for a {@link Method} obtained via reflection. |
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217 */ |
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218 RiResolvedMethod getRiMethod(Method reflectionMethod); |
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219 |
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220 /** |
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221 * Installs some given machine code as the implementation of a given method. |
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222 * |
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223 * @param method a method whose executable code is being modified |
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224 * @param code the code to be executed when {@code method} is called |
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225 */ |
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226 void installMethod(RiMethod method, CiTargetMethod code); |
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227 |
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228 /** |
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229 * Adds the given machine code as an implementation of the given method without making it the default implementation. |
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230 * @param method a method to which the executable code is begin added |
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231 * @param code the code to be added |
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232 * @return a reference to the compiled and ready-to-run code |
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233 */ |
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234 RiCompiledMethod addMethod(RiResolvedMethod method, CiTargetMethod code); |
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235 |
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236 /** |
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237 * Executes the given runnable on a compiler thread, which means that it can access constant pools, etc. |
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238 */ |
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239 void executeOnCompilerThread(Runnable r); |
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240 } |