Mercurial > hg > truffle
annotate src/share/vm/utilities/globalDefinitions.hpp @ 12061:e5003079dfa5
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| author | dcubed |
|---|---|
| date | Fri, 16 Aug 2013 10:06:58 -0700 |
| parents | 9766f73e770d 740e263c80c6 |
| children | 4c84d351cca9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |
| 26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP | |
| 27 | |
| 4006 | 28 #ifndef __STDC_FORMAT_MACROS |
| 3960 | 29 #define __STDC_FORMAT_MACROS |
| 4006 | 30 #endif |
| 3960 | 31 |
| 1972 | 32 #ifdef TARGET_COMPILER_gcc |
| 33 # include "utilities/globalDefinitions_gcc.hpp" | |
| 34 #endif | |
| 35 #ifdef TARGET_COMPILER_visCPP | |
| 36 # include "utilities/globalDefinitions_visCPP.hpp" | |
| 37 #endif | |
| 38 #ifdef TARGET_COMPILER_sparcWorks | |
| 39 # include "utilities/globalDefinitions_sparcWorks.hpp" | |
| 40 #endif | |
| 41 | |
| 42 #include "utilities/macros.hpp" | |
| 43 | |
| 0 | 44 // This file holds all globally used constants & types, class (forward) |
| 45 // declarations and a few frequently used utility functions. | |
| 46 | |
| 47 //---------------------------------------------------------------------------------------------------- | |
| 48 // Constants | |
| 49 | |
| 50 const int LogBytesPerShort = 1; | |
| 51 const int LogBytesPerInt = 2; | |
| 52 #ifdef _LP64 | |
| 53 const int LogBytesPerWord = 3; | |
| 54 #else | |
| 55 const int LogBytesPerWord = 2; | |
| 56 #endif | |
| 57 const int LogBytesPerLong = 3; | |
| 58 | |
| 59 const int BytesPerShort = 1 << LogBytesPerShort; | |
| 60 const int BytesPerInt = 1 << LogBytesPerInt; | |
| 61 const int BytesPerWord = 1 << LogBytesPerWord; | |
| 62 const int BytesPerLong = 1 << LogBytesPerLong; | |
| 63 | |
| 64 const int LogBitsPerByte = 3; | |
| 65 const int LogBitsPerShort = LogBitsPerByte + LogBytesPerShort; | |
| 66 const int LogBitsPerInt = LogBitsPerByte + LogBytesPerInt; | |
| 67 const int LogBitsPerWord = LogBitsPerByte + LogBytesPerWord; | |
| 68 const int LogBitsPerLong = LogBitsPerByte + LogBytesPerLong; | |
| 69 | |
| 70 const int BitsPerByte = 1 << LogBitsPerByte; | |
| 71 const int BitsPerShort = 1 << LogBitsPerShort; | |
| 72 const int BitsPerInt = 1 << LogBitsPerInt; | |
| 73 const int BitsPerWord = 1 << LogBitsPerWord; | |
| 74 const int BitsPerLong = 1 << LogBitsPerLong; | |
| 75 | |
| 76 const int WordAlignmentMask = (1 << LogBytesPerWord) - 1; | |
| 77 const int LongAlignmentMask = (1 << LogBytesPerLong) - 1; | |
| 78 | |
| 79 const int WordsPerLong = 2; // Number of stack entries for longs | |
| 80 | |
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81 const int oopSize = sizeof(char*); // Full-width oop |
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82 extern int heapOopSize; // Oop within a java object |
| 0 | 83 const int wordSize = sizeof(char*); |
| 84 const int longSize = sizeof(jlong); | |
| 85 const int jintSize = sizeof(jint); | |
| 86 const int size_tSize = sizeof(size_t); | |
| 87 | |
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88 const int BytesPerOop = BytesPerWord; // Full-width oop |
| 0 | 89 |
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90 extern int LogBytesPerHeapOop; // Oop within a java object |
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91 extern int LogBitsPerHeapOop; |
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92 extern int BytesPerHeapOop; |
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93 extern int BitsPerHeapOop; |
| 0 | 94 |
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95 // Oop encoding heap max |
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96 extern uint64_t OopEncodingHeapMax; |
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97 |
| 0 | 98 const int BitsPerJavaInteger = 32; |
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99 const int BitsPerJavaLong = 64; |
| 0 | 100 const int BitsPerSize_t = size_tSize * BitsPerByte; |
| 101 | |
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102 // Size of a char[] needed to represent a jint as a string in decimal. |
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103 const int jintAsStringSize = 12; |
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104 |
| 0 | 105 // In fact this should be |
| 106 // log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); | |
| 107 // see os::set_memory_serialize_page() | |
| 108 #ifdef _LP64 | |
| 109 const int SerializePageShiftCount = 4; | |
| 110 #else | |
| 111 const int SerializePageShiftCount = 3; | |
| 112 #endif | |
| 113 | |
| 114 // An opaque struct of heap-word width, so that HeapWord* can be a generic | |
| 115 // pointer into the heap. We require that object sizes be measured in | |
| 116 // units of heap words, so that that | |
| 117 // HeapWord* hw; | |
| 118 // hw += oop(hw)->foo(); | |
| 119 // works, where foo is a method (like size or scavenge) that returns the | |
| 120 // object size. | |
| 121 class HeapWord { | |
| 122 friend class VMStructs; | |
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123 private: |
| 0 | 124 char* i; |
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125 #ifndef PRODUCT |
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126 public: |
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127 char* value() { return i; } |
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128 #endif |
| 0 | 129 }; |
| 130 | |
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131 // Analogous opaque struct for metadata allocated from |
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132 // metaspaces. |
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133 class MetaWord { |
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134 friend class VMStructs; |
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135 private: |
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136 char* i; |
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137 }; |
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138 |
| 0 | 139 // HeapWordSize must be 2^LogHeapWordSize. |
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140 const int HeapWordSize = sizeof(HeapWord); |
| 0 | 141 #ifdef _LP64 |
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142 const int LogHeapWordSize = 3; |
| 0 | 143 #else |
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144 const int LogHeapWordSize = 2; |
| 0 | 145 #endif |
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146 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
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147 const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize; |
| 0 | 148 |
| 149 // The larger HeapWordSize for 64bit requires larger heaps | |
| 150 // for the same application running in 64bit. See bug 4967770. | |
| 151 // The minimum alignment to a heap word size is done. Other | |
| 152 // parts of the memory system may required additional alignment | |
| 153 // and are responsible for those alignments. | |
| 154 #ifdef _LP64 | |
| 155 #define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) | |
| 156 #else | |
| 157 #define ScaleForWordSize(x) (x) | |
| 158 #endif | |
| 159 | |
| 160 // The minimum number of native machine words necessary to contain "byte_size" | |
| 161 // bytes. | |
| 162 inline size_t heap_word_size(size_t byte_size) { | |
| 163 return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; | |
| 164 } | |
| 165 | |
| 166 | |
| 167 const size_t K = 1024; | |
| 168 const size_t M = K*K; | |
| 169 const size_t G = M*K; | |
| 170 const size_t HWperKB = K / sizeof(HeapWord); | |
| 171 | |
| 172 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint | |
| 173 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
| 174 | |
| 175 // Constants for converting from a base unit to milli-base units. For | |
| 176 // example from seconds to milliseconds and microseconds | |
| 177 | |
| 178 const int MILLIUNITS = 1000; // milli units per base unit | |
| 179 const int MICROUNITS = 1000000; // micro units per base unit | |
| 180 const int NANOUNITS = 1000000000; // nano units per base unit | |
| 181 | |
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182 const jlong NANOSECS_PER_SEC = CONST64(1000000000); |
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183 const jint NANOSECS_PER_MILLISEC = 1000000; |
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184 |
| 0 | 185 inline const char* proper_unit_for_byte_size(size_t s) { |
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186 #ifdef _LP64 |
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187 if (s >= 10*G) { |
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188 return "G"; |
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189 } |
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190 #endif |
| 0 | 191 if (s >= 10*M) { |
| 192 return "M"; | |
| 193 } else if (s >= 10*K) { | |
| 194 return "K"; | |
| 195 } else { | |
| 196 return "B"; | |
| 197 } | |
| 198 } | |
| 199 | |
| 6059 | 200 template <class T> |
| 201 inline T byte_size_in_proper_unit(T s) { | |
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202 #ifdef _LP64 |
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203 if (s >= 10*G) { |
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204 return (T)(s/G); |
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205 } |
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206 #endif |
| 0 | 207 if (s >= 10*M) { |
| 6059 | 208 return (T)(s/M); |
| 0 | 209 } else if (s >= 10*K) { |
| 6059 | 210 return (T)(s/K); |
| 0 | 211 } else { |
| 212 return s; | |
| 213 } | |
| 214 } | |
| 215 | |
| 216 //---------------------------------------------------------------------------------------------------- | |
| 217 // VM type definitions | |
| 218 | |
| 219 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
| 220 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
| 221 | |
| 222 typedef intptr_t intx; | |
| 223 typedef uintptr_t uintx; | |
| 224 | |
| 225 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
| 226 const intx max_intx = (uintx)min_intx - 1; | |
| 227 const uintx max_uintx = (uintx)-1; | |
| 228 | |
| 229 // Table of values: | |
| 230 // sizeof intx 4 8 | |
| 231 // min_intx 0x80000000 0x8000000000000000 | |
| 232 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
| 233 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
| 234 | |
| 235 typedef unsigned int uint; NEEDS_CLEANUP | |
| 236 | |
| 237 | |
| 238 //---------------------------------------------------------------------------------------------------- | |
| 239 // Java type definitions | |
| 240 | |
| 241 // All kinds of 'plain' byte addresses | |
| 242 typedef signed char s_char; | |
| 243 typedef unsigned char u_char; | |
| 244 typedef u_char* address; | |
| 245 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
| 246 // except for some implementations of a C++ | |
| 247 // linkage pointer to function. Should never | |
| 248 // need one of those to be placed in this | |
| 249 // type anyway. | |
| 250 | |
| 251 // Utility functions to "portably" (?) bit twiddle pointers | |
| 252 // Where portable means keep ANSI C++ compilers quiet | |
| 253 | |
| 254 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
| 255 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
| 256 | |
| 257 // Utility functions to "portably" make cast to/from function pointers. | |
| 258 | |
| 259 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
| 260 inline address_word castable_address(address x) { return address_word(x) ; } | |
| 261 inline address_word castable_address(void* x) { return address_word(x) ; } | |
| 262 | |
| 263 // Pointer subtraction. | |
| 264 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
| 265 // the range we might need to find differences from one end of the heap | |
| 266 // to the other. | |
| 267 // A typical use might be: | |
| 268 // if (pointer_delta(end(), top()) >= size) { | |
| 269 // // enough room for an object of size | |
| 270 // ... | |
| 271 // and then additions like | |
| 272 // ... top() + size ... | |
| 273 // are safe because we know that top() is at least size below end(). | |
| 274 inline size_t pointer_delta(const void* left, | |
| 275 const void* right, | |
| 276 size_t element_size) { | |
| 277 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
| 278 } | |
| 279 // A version specialized for HeapWord*'s. | |
| 280 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
| 281 return pointer_delta(left, right, sizeof(HeapWord)); | |
| 282 } | |
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283 // A version specialized for MetaWord*'s. |
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284 inline size_t pointer_delta(const MetaWord* left, const MetaWord* right) { |
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285 return pointer_delta(left, right, sizeof(MetaWord)); |
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286 } |
| 0 | 287 |
| 288 // | |
| 289 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
| 290 // directly without at best a warning. This macro accomplishes it silently | |
| 291 // In every case that is present at this point the value be cast is a pointer | |
| 292 // to a C linkage function. In somecase the type used for the cast reflects | |
| 293 // that linkage and a picky compiler would not complain. In other cases because | |
| 294 // there is no convenient place to place a typedef with extern C linkage (i.e | |
| 295 // a platform dependent header file) it doesn't. At this point no compiler seems | |
| 296 // picky enough to catch these instances (which are few). It is possible that | |
| 297 // using templates could fix these for all cases. This use of templates is likely | |
| 298 // so far from the middle of the road that it is likely to be problematic in | |
| 299 // many C++ compilers. | |
| 300 // | |
| 301 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
| 302 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
| 303 | |
| 304 // Unsigned byte types for os and stream.hpp | |
| 305 | |
| 306 // Unsigned one, two, four and eigth byte quantities used for describing | |
| 307 // the .class file format. See JVM book chapter 4. | |
| 308 | |
| 309 typedef jubyte u1; | |
| 310 typedef jushort u2; | |
| 311 typedef juint u4; | |
| 312 typedef julong u8; | |
| 313 | |
| 314 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
| 315 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
| 316 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
| 317 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
| 318 | |
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319 typedef jbyte s1; |
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320 typedef jshort s2; |
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321 typedef jint s4; |
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322 typedef jlong s8; |
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323 |
| 0 | 324 //---------------------------------------------------------------------------------------------------- |
| 325 // JVM spec restrictions | |
| 326 | |
| 327 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
| 328 | |
| 329 | |
| 330 //---------------------------------------------------------------------------------------------------- | |
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331 // Default and minimum StringTableSize values |
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332 |
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333 const int defaultStringTableSize = NOT_LP64(1009) LP64_ONLY(60013); |
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334 const int minimumStringTableSize=1009; |
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335 |
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336 |
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337 //---------------------------------------------------------------------------------------------------- |
| 0 | 338 // HotSwap - for JVMTI aka Class File Replacement and PopFrame |
| 339 // | |
| 340 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
| 341 | |
| 342 #define HOTSWAP | |
| 343 | |
| 344 //---------------------------------------------------------------------------------------------------- | |
| 345 // Object alignment, in units of HeapWords. | |
| 346 // | |
| 347 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
| 348 // reference fields can be naturally aligned. | |
| 349 | |
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350 extern int MinObjAlignment; |
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351 extern int MinObjAlignmentInBytes; |
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352 extern int MinObjAlignmentInBytesMask; |
| 0 | 353 |
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354 extern int LogMinObjAlignment; |
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355 extern int LogMinObjAlignmentInBytes; |
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356 |
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357 const int LogKlassAlignmentInBytes = 3; |
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358 const int LogKlassAlignment = LogKlassAlignmentInBytes - LogHeapWordSize; |
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359 const int KlassAlignmentInBytes = 1 << LogKlassAlignmentInBytes; |
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360 const int KlassAlignment = KlassAlignmentInBytes / HeapWordSize; |
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361 |
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362 // Klass encoding metaspace max size |
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363 const uint64_t KlassEncodingMetaspaceMax = (uint64_t(max_juint) + 1) << LogKlassAlignmentInBytes; |
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364 |
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365 const jlong CompressedKlassPointersBase = NOT_LP64(0) LP64_ONLY(CONST64(0x800000000)); // 32*G |
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366 |
| 0 | 367 // Machine dependent stuff |
| 368 | |
| 1972 | 369 #ifdef TARGET_ARCH_x86 |
| 370 # include "globalDefinitions_x86.hpp" | |
| 371 #endif | |
| 372 #ifdef TARGET_ARCH_sparc | |
| 373 # include "globalDefinitions_sparc.hpp" | |
| 374 #endif | |
| 375 #ifdef TARGET_ARCH_zero | |
| 376 # include "globalDefinitions_zero.hpp" | |
| 377 #endif | |
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378 #ifdef TARGET_ARCH_arm |
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379 # include "globalDefinitions_arm.hpp" |
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380 #endif |
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381 #ifdef TARGET_ARCH_ppc |
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382 # include "globalDefinitions_ppc.hpp" |
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383 #endif |
| 1972 | 384 |
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385 /* |
| 11129 | 386 * If a platform does not support native stack walking |
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387 * the platform specific globalDefinitions (above) |
| 11129 | 388 * can set PLATFORM_NATIVE_STACK_WALKING_SUPPORTED to 0 |
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389 */ |
| 11129 | 390 #ifndef PLATFORM_NATIVE_STACK_WALKING_SUPPORTED |
| 391 #define PLATFORM_NATIVE_STACK_WALKING_SUPPORTED 1 | |
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392 #endif |
| 0 | 393 |
| 394 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
| 395 // Note: this value must be a power of 2 | |
| 396 | |
| 397 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
| 398 | |
| 399 // Signed variants of alignment helpers. There are two versions of each, a macro | |
| 400 // for use in places like enum definitions that require compile-time constant | |
| 401 // expressions and a function for all other places so as to get type checking. | |
| 402 | |
| 403 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
| 404 | |
| 405 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
| 406 return align_size_up_(size, alignment); | |
| 407 } | |
| 408 | |
| 409 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
| 410 | |
| 411 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
| 412 return align_size_down_(size, alignment); | |
| 413 } | |
| 414 | |
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415 #define is_size_aligned_(size, alignment) ((size) == (align_size_up_(size, alignment))) |
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416 |
| 0 | 417 // Align objects by rounding up their size, in HeapWord units. |
| 418 | |
| 419 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
| 420 | |
| 421 inline intptr_t align_object_size(intptr_t size) { | |
| 422 return align_size_up(size, MinObjAlignment); | |
| 423 } | |
| 424 | |
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425 inline bool is_object_aligned(intptr_t addr) { |
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426 return addr == align_object_size(addr); |
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427 } |
| 0 | 428 |
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429 // Pad out certain offsets to jlong alignment, in HeapWord units. |
| 0 | 430 |
| 431 inline intptr_t align_object_offset(intptr_t offset) { | |
| 432 return align_size_up(offset, HeapWordsPerLong); | |
| 433 } | |
| 434 | |
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435 inline void* align_pointer_up(const void* addr, size_t size) { |
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436 return (void*) align_size_up_((uintptr_t)addr, size); |
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437 } |
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438 |
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439 // Clamp an address to be within a specific page |
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440 // 1. If addr is on the page it is returned as is |
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441 // 2. If addr is above the page_address the start of the *next* page will be returned |
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442 // 3. Otherwise, if addr is below the page_address the start of the page will be returned |
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443 inline address clamp_address_in_page(address addr, address page_address, intptr_t page_size) { |
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444 if (align_size_down(intptr_t(addr), page_size) == align_size_down(intptr_t(page_address), page_size)) { |
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445 // address is in the specified page, just return it as is |
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446 return addr; |
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447 } else if (addr > page_address) { |
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448 // address is above specified page, return start of next page |
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449 return (address)align_size_down(intptr_t(page_address), page_size) + page_size; |
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450 } else { |
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451 // address is below specified page, return start of page |
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452 return (address)align_size_down(intptr_t(page_address), page_size); |
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453 } |
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454 } |
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455 |
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456 |
| 1665 | 457 // The expected size in bytes of a cache line, used to pad data structures. |
| 458 #define DEFAULT_CACHE_LINE_SIZE 64 | |
| 459 | |
| 0 | 460 |
| 461 //---------------------------------------------------------------------------------------------------- | |
| 462 // Utility macros for compilers | |
| 463 // used to silence compiler warnings | |
| 464 | |
| 465 #define Unused_Variable(var) var | |
| 466 | |
| 467 | |
| 468 //---------------------------------------------------------------------------------------------------- | |
| 469 // Miscellaneous | |
| 470 | |
| 471 // 6302670 Eliminate Hotspot __fabsf dependency | |
| 472 // All fabs() callers should call this function instead, which will implicitly | |
| 473 // convert the operand to double, avoiding a dependency on __fabsf which | |
| 474 // doesn't exist in early versions of Solaris 8. | |
| 475 inline double fabsd(double value) { | |
| 476 return fabs(value); | |
| 477 } | |
| 478 | |
| 479 inline jint low (jlong value) { return jint(value); } | |
| 480 inline jint high(jlong value) { return jint(value >> 32); } | |
| 481 | |
| 482 // the fancy casts are a hopefully portable way | |
| 483 // to do unsigned 32 to 64 bit type conversion | |
| 484 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
| 485 *value |= (jlong)(julong)(juint)low; } | |
| 486 | |
| 487 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
| 488 *value |= (jlong)high << 32; } | |
| 489 | |
| 490 inline jlong jlong_from(jint h, jint l) { | |
| 491 jlong result = 0; // initialization to avoid warning | |
| 492 set_high(&result, h); | |
| 493 set_low(&result, l); | |
| 494 return result; | |
| 495 } | |
| 496 | |
| 497 union jlong_accessor { | |
| 498 jint words[2]; | |
| 499 jlong long_value; | |
| 500 }; | |
| 501 | |
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502 void basic_types_init(); // cannot define here; uses assert |
| 0 | 503 |
| 504 | |
| 505 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
| 506 enum BasicType { | |
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507 T_BOOLEAN = 4, |
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508 T_CHAR = 5, |
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509 T_FLOAT = 6, |
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510 T_DOUBLE = 7, |
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511 T_BYTE = 8, |
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512 T_SHORT = 9, |
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513 T_INT = 10, |
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514 T_LONG = 11, |
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515 T_OBJECT = 12, |
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516 T_ARRAY = 13, |
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517 T_VOID = 14, |
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518 T_ADDRESS = 15, |
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519 T_NARROWOOP = 16, |
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520 T_METADATA = 17, |
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521 T_NARROWKLASS = 18, |
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522 T_CONFLICT = 19, // for stack value type with conflicting contents |
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523 T_ILLEGAL = 99 |
| 0 | 524 }; |
| 525 | |
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526 inline bool is_java_primitive(BasicType t) { |
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527 return T_BOOLEAN <= t && t <= T_LONG; |
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528 } |
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529 |
| 710 | 530 inline bool is_subword_type(BasicType t) { |
| 531 // these guys are processed exactly like T_INT in calling sequences: | |
| 532 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
| 533 } | |
| 534 | |
| 535 inline bool is_signed_subword_type(BasicType t) { | |
| 536 return (t == T_BYTE || t == T_SHORT); | |
| 537 } | |
| 538 | |
| 0 | 539 // Convert a char from a classfile signature to a BasicType |
| 540 inline BasicType char2type(char c) { | |
| 541 switch( c ) { | |
| 542 case 'B': return T_BYTE; | |
| 543 case 'C': return T_CHAR; | |
| 544 case 'D': return T_DOUBLE; | |
| 545 case 'F': return T_FLOAT; | |
| 546 case 'I': return T_INT; | |
| 547 case 'J': return T_LONG; | |
| 548 case 'S': return T_SHORT; | |
| 549 case 'Z': return T_BOOLEAN; | |
| 550 case 'V': return T_VOID; | |
| 551 case 'L': return T_OBJECT; | |
| 552 case '[': return T_ARRAY; | |
| 553 } | |
| 554 return T_ILLEGAL; | |
| 555 } | |
| 556 | |
| 557 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
| 558 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
| 559 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
| 560 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
| 561 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
| 562 extern BasicType name2type(const char* name); | |
| 563 | |
| 564 // Auxilary math routines | |
| 565 // least common multiple | |
| 566 extern size_t lcm(size_t a, size_t b); | |
| 567 | |
| 568 | |
| 569 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
| 570 enum BasicTypeSize { | |
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571 T_BOOLEAN_size = 1, |
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572 T_CHAR_size = 1, |
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573 T_FLOAT_size = 1, |
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574 T_DOUBLE_size = 2, |
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575 T_BYTE_size = 1, |
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576 T_SHORT_size = 1, |
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577 T_INT_size = 1, |
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578 T_LONG_size = 2, |
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579 T_OBJECT_size = 1, |
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580 T_ARRAY_size = 1, |
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581 T_NARROWOOP_size = 1, |
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582 T_NARROWKLASS_size = 1, |
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583 T_VOID_size = 0 |
| 0 | 584 }; |
| 585 | |
| 586 | |
| 587 // maps a BasicType to its instance field storage type: | |
| 588 // all sub-word integral types are widened to T_INT | |
| 589 extern BasicType type2field[T_CONFLICT+1]; | |
| 590 extern BasicType type2wfield[T_CONFLICT+1]; | |
| 591 | |
| 592 | |
| 593 // size in bytes | |
| 594 enum ArrayElementSize { | |
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595 T_BOOLEAN_aelem_bytes = 1, |
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596 T_CHAR_aelem_bytes = 2, |
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597 T_FLOAT_aelem_bytes = 4, |
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598 T_DOUBLE_aelem_bytes = 8, |
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599 T_BYTE_aelem_bytes = 1, |
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600 T_SHORT_aelem_bytes = 2, |
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601 T_INT_aelem_bytes = 4, |
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602 T_LONG_aelem_bytes = 8, |
| 0 | 603 #ifdef _LP64 |
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604 T_OBJECT_aelem_bytes = 8, |
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605 T_ARRAY_aelem_bytes = 8, |
| 0 | 606 #else |
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607 T_OBJECT_aelem_bytes = 4, |
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608 T_ARRAY_aelem_bytes = 4, |
| 0 | 609 #endif |
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610 T_NARROWOOP_aelem_bytes = 4, |
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611 T_NARROWKLASS_aelem_bytes = 4, |
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612 T_VOID_aelem_bytes = 0 |
| 0 | 613 }; |
| 614 | |
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615 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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616 #ifdef ASSERT |
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617 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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618 #else |
| 1763 | 619 inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
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620 #endif |
| 0 | 621 |
| 622 | |
| 623 // JavaValue serves as a container for arbitrary Java values. | |
| 624 | |
| 625 class JavaValue { | |
| 626 | |
| 627 public: | |
| 628 typedef union JavaCallValue { | |
| 629 jfloat f; | |
| 630 jdouble d; | |
| 631 jint i; | |
| 632 jlong l; | |
| 633 jobject h; | |
| 634 } JavaCallValue; | |
| 635 | |
| 636 private: | |
| 637 BasicType _type; | |
| 638 JavaCallValue _value; | |
| 639 | |
| 640 public: | |
| 641 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
| 642 | |
| 643 JavaValue(jfloat value) { | |
| 644 _type = T_FLOAT; | |
| 645 _value.f = value; | |
| 646 } | |
| 647 | |
| 648 JavaValue(jdouble value) { | |
| 649 _type = T_DOUBLE; | |
| 650 _value.d = value; | |
| 651 } | |
| 652 | |
| 653 jfloat get_jfloat() const { return _value.f; } | |
| 654 jdouble get_jdouble() const { return _value.d; } | |
| 655 jint get_jint() const { return _value.i; } | |
| 656 jlong get_jlong() const { return _value.l; } | |
| 657 jobject get_jobject() const { return _value.h; } | |
| 658 JavaCallValue* get_value_addr() { return &_value; } | |
| 659 BasicType get_type() const { return _type; } | |
| 660 | |
| 661 void set_jfloat(jfloat f) { _value.f = f;} | |
| 662 void set_jdouble(jdouble d) { _value.d = d;} | |
| 663 void set_jint(jint i) { _value.i = i;} | |
| 664 void set_jlong(jlong l) { _value.l = l;} | |
| 665 void set_jobject(jobject h) { _value.h = h;} | |
| 666 void set_type(BasicType t) { _type = t; } | |
| 667 | |
| 668 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
| 669 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
| 670 jchar get_jchar() const { return (jchar) (_value.i);} | |
| 671 jshort get_jshort() const { return (jshort) (_value.i);} | |
| 672 | |
| 673 }; | |
| 674 | |
| 675 | |
| 676 #define STACK_BIAS 0 | |
| 677 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
| 678 // in order to extend the reach of the stack pointer. | |
| 679 #if defined(SPARC) && defined(_LP64) | |
| 680 #undef STACK_BIAS | |
| 681 #define STACK_BIAS 0x7ff | |
| 682 #endif | |
| 683 | |
| 684 | |
| 685 // TosState describes the top-of-stack state before and after the execution of | |
| 686 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
| 687 // registers. The TosState corresponds to the 'machine represention' of this cached | |
| 688 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
| 689 // as well as a 5th state in case the top-of-stack value is actually on the top | |
| 690 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
| 691 // state when it comes to machine representation but is used separately for (oop) | |
| 692 // type specific operations (e.g. verification code). | |
| 693 | |
| 694 enum TosState { // describes the tos cache contents | |
| 695 btos = 0, // byte, bool tos cached | |
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696 ctos = 1, // char tos cached |
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697 stos = 2, // short tos cached |
| 0 | 698 itos = 3, // int tos cached |
| 699 ltos = 4, // long tos cached | |
| 700 ftos = 5, // float tos cached | |
| 701 dtos = 6, // double tos cached | |
| 702 atos = 7, // object cached | |
| 703 vtos = 8, // tos not cached | |
| 704 number_of_states, | |
| 705 ilgl // illegal state: should not occur | |
| 706 }; | |
| 707 | |
| 708 | |
| 709 inline TosState as_TosState(BasicType type) { | |
| 710 switch (type) { | |
| 711 case T_BYTE : return btos; | |
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712 case T_BOOLEAN: return btos; // FIXME: Add ztos |
| 0 | 713 case T_CHAR : return ctos; |
| 714 case T_SHORT : return stos; | |
| 715 case T_INT : return itos; | |
| 716 case T_LONG : return ltos; | |
| 717 case T_FLOAT : return ftos; | |
| 718 case T_DOUBLE : return dtos; | |
| 719 case T_VOID : return vtos; | |
| 720 case T_ARRAY : // fall through | |
| 721 case T_OBJECT : return atos; | |
| 722 } | |
| 723 return ilgl; | |
| 724 } | |
| 725 | |
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726 inline BasicType as_BasicType(TosState state) { |
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727 switch (state) { |
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728 //case ztos: return T_BOOLEAN;//FIXME |
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729 case btos : return T_BYTE; |
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730 case ctos : return T_CHAR; |
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731 case stos : return T_SHORT; |
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732 case itos : return T_INT; |
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733 case ltos : return T_LONG; |
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734 case ftos : return T_FLOAT; |
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735 case dtos : return T_DOUBLE; |
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736 case atos : return T_OBJECT; |
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737 case vtos : return T_VOID; |
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738 } |
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739 return T_ILLEGAL; |
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740 } |
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741 |
| 0 | 742 |
| 743 // Helper function to convert BasicType info into TosState | |
| 744 // Note: Cannot define here as it uses global constant at the time being. | |
| 745 TosState as_TosState(BasicType type); | |
| 746 | |
| 747 | |
| 748 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
| 749 // information is needed by the safepoint code. | |
| 750 // | |
| 751 // There are 4 essential states: | |
| 752 // | |
| 753 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
| 754 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
| 755 // _thread_in_vm : Executing in the vm | |
| 756 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
| 757 // | |
| 758 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
| 759 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
| 760 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
| 761 // | |
| 762 // Given a state, the xxx_trans state can always be found by adding 1. | |
| 763 // | |
| 764 enum JavaThreadState { | |
| 765 _thread_uninitialized = 0, // should never happen (missing initialization) | |
| 766 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
| 767 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
| 768 _thread_in_native = 4, // running in native code | |
| 769 _thread_in_native_trans = 5, // corresponding transition state | |
| 770 _thread_in_vm = 6, // running in VM | |
| 771 _thread_in_vm_trans = 7, // corresponding transition state | |
| 772 _thread_in_Java = 8, // running in Java or in stub code | |
| 773 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
| 774 _thread_blocked = 10, // blocked in vm | |
| 775 _thread_blocked_trans = 11, // corresponding transition state | |
| 776 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
| 777 }; | |
| 778 | |
| 779 | |
| 780 // Handy constants for deciding which compiler mode to use. | |
| 781 enum MethodCompilation { | |
| 782 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
| 783 InvalidOSREntryBci = -2 | |
| 784 }; | |
| 785 | |
| 786 // Enumeration to distinguish tiers of compilation | |
| 787 enum CompLevel { | |
| 1783 | 788 CompLevel_any = -1, |
| 789 CompLevel_all = -1, | |
| 790 CompLevel_none = 0, // Interpreter | |
| 791 CompLevel_simple = 1, // C1 | |
| 792 CompLevel_limited_profile = 2, // C1, invocation & backedge counters | |
| 793 CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo | |
| 2447 | 794 CompLevel_full_optimization = 4, // C2 or Shark |
| 0 | 795 |
| 2447 | 796 #if defined(COMPILER2) || defined(SHARK) |
| 1783 | 797 CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
| 798 #elif defined(COMPILER1) | |
| 799 CompLevel_highest_tier = CompLevel_simple, // pure C1 | |
| 0 | 800 #else |
| 1783 | 801 CompLevel_highest_tier = CompLevel_none, |
| 802 #endif | |
| 803 | |
| 804 #if defined(TIERED) | |
| 805 CompLevel_initial_compile = CompLevel_full_profile // tiered | |
| 806 #elif defined(COMPILER1) | |
| 807 CompLevel_initial_compile = CompLevel_simple // pure C1 | |
| 2447 | 808 #elif defined(COMPILER2) || defined(SHARK) |
| 1783 | 809 CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
| 810 #else | |
| 811 CompLevel_initial_compile = CompLevel_none | |
| 812 #endif | |
| 0 | 813 }; |
| 814 | |
| 1783 | 815 inline bool is_c1_compile(int comp_level) { |
| 816 return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; | |
| 0 | 817 } |
| 1783 | 818 |
| 819 inline bool is_c2_compile(int comp_level) { | |
| 0 | 820 return comp_level == CompLevel_full_optimization; |
| 821 } | |
| 1783 | 822 |
| 0 | 823 inline bool is_highest_tier_compile(int comp_level) { |
| 824 return comp_level == CompLevel_highest_tier; | |
| 825 } | |
| 826 | |
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827 inline bool is_compile(int comp_level) { |
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828 return is_c1_compile(comp_level) || is_c2_compile(comp_level); |
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829 } |
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830 |
| 0 | 831 //---------------------------------------------------------------------------------------------------- |
| 832 // 'Forward' declarations of frequently used classes | |
| 833 // (in order to reduce interface dependencies & reduce | |
| 834 // number of unnecessary compilations after changes) | |
| 835 | |
| 836 class symbolTable; | |
| 837 class ClassFileStream; | |
| 838 | |
| 839 class Event; | |
| 840 | |
| 841 class Thread; | |
| 842 class VMThread; | |
| 843 class JavaThread; | |
| 844 class Threads; | |
| 845 | |
| 846 class VM_Operation; | |
| 847 class VMOperationQueue; | |
| 848 | |
| 849 class CodeBlob; | |
| 850 class nmethod; | |
| 851 class OSRAdapter; | |
| 852 class I2CAdapter; | |
| 853 class C2IAdapter; | |
| 854 class CompiledIC; | |
| 855 class relocInfo; | |
| 856 class ScopeDesc; | |
| 857 class PcDesc; | |
| 858 | |
| 859 class Recompiler; | |
| 860 class Recompilee; | |
| 861 class RecompilationPolicy; | |
| 862 class RFrame; | |
| 863 class CompiledRFrame; | |
| 864 class InterpretedRFrame; | |
| 865 | |
| 866 class frame; | |
| 867 | |
| 868 class vframe; | |
| 869 class javaVFrame; | |
| 870 class interpretedVFrame; | |
| 871 class compiledVFrame; | |
| 872 class deoptimizedVFrame; | |
| 873 class externalVFrame; | |
| 874 class entryVFrame; | |
| 875 | |
| 876 class RegisterMap; | |
| 877 | |
| 878 class Mutex; | |
| 879 class Monitor; | |
| 880 class BasicLock; | |
| 881 class BasicObjectLock; | |
| 882 | |
| 883 class PeriodicTask; | |
| 884 | |
| 885 class JavaCallWrapper; | |
| 886 | |
| 887 class oopDesc; | |
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888 class metaDataOopDesc; |
| 0 | 889 |
| 890 class NativeCall; | |
| 891 | |
| 892 class zone; | |
| 893 | |
| 894 class StubQueue; | |
| 895 | |
| 896 class outputStream; | |
| 897 | |
| 898 class ResourceArea; | |
| 899 | |
| 900 class DebugInformationRecorder; | |
| 901 class ScopeValue; | |
| 902 class CompressedStream; | |
| 903 class DebugInfoReadStream; | |
| 904 class DebugInfoWriteStream; | |
| 905 class LocationValue; | |
| 906 class ConstantValue; | |
| 907 class IllegalValue; | |
| 908 | |
| 909 class PrivilegedElement; | |
| 910 class MonitorArray; | |
| 911 | |
| 912 class MonitorInfo; | |
| 913 | |
| 914 class OffsetClosure; | |
| 915 class OopMapCache; | |
| 916 class InterpreterOopMap; | |
| 917 class OopMapCacheEntry; | |
| 918 class OSThread; | |
| 919 | |
| 920 typedef int (*OSThreadStartFunc)(void*); | |
| 921 | |
| 922 class Space; | |
| 923 | |
| 924 class JavaValue; | |
| 925 class methodHandle; | |
| 926 class JavaCallArguments; | |
| 927 | |
| 928 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
| 929 | |
| 930 extern void basic_fatal(const char* msg); | |
| 931 | |
| 932 | |
| 933 //---------------------------------------------------------------------------------------------------- | |
| 934 // Special constants for debugging | |
| 935 | |
| 936 const jint badInt = -3; // generic "bad int" value | |
| 937 const long badAddressVal = -2; // generic "bad address" value | |
| 938 const long badOopVal = -1; // generic "bad oop" value | |
| 939 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
| 940 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
| 941 const int badResourceValue = 0xAB; // value used to zap resource area | |
| 942 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
| 943 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
| 944 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
| 945 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
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946 const juint badMetaWordVal = 0xBAADFADE; // value used to zap metadata heap after GC |
| 0 | 947 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation |
| 948 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
| 949 | |
| 950 | |
| 951 // (These must be implemented as #defines because C++ compilers are | |
| 952 // not obligated to inline non-integral constants!) | |
| 953 #define badAddress ((address)::badAddressVal) | |
| 954 #define badOop ((oop)::badOopVal) | |
| 955 #define badHeapWord (::badHeapWordVal) | |
| 956 #define badJNIHandle ((oop)::badJNIHandleVal) | |
| 957 | |
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958 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
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959 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
| 0 | 960 |
| 961 //---------------------------------------------------------------------------------------------------- | |
| 962 // Utility functions for bitfield manipulations | |
| 963 | |
| 964 const intptr_t AllBits = ~0; // all bits set in a word | |
| 965 const intptr_t NoBits = 0; // no bits set in a word | |
| 966 const jlong NoLongBits = 0; // no bits set in a long | |
| 967 const intptr_t OneBit = 1; // only right_most bit set in a word | |
| 968 | |
| 969 // get a word with the n.th or the right-most or left-most n bits set | |
| 970 // (note: #define used only so that they can be used in enum constant definitions) | |
| 971 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
| 972 #define right_n_bits(n) (nth_bit(n) - 1) | |
| 973 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
| 974 | |
| 975 // bit-operations using a mask m | |
| 976 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
| 977 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
| 978 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
| 979 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
| 980 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
| 981 | |
| 982 // bit-operations using the n.th bit | |
| 983 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
| 984 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
| 985 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
| 986 | |
| 987 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
| 988 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
| 989 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
| 990 } | |
| 991 | |
| 992 | |
| 993 //---------------------------------------------------------------------------------------------------- | |
| 994 // Utility functions for integers | |
| 995 | |
| 996 // Avoid use of global min/max macros which may cause unwanted double | |
| 997 // evaluation of arguments. | |
| 998 #ifdef max | |
| 999 #undef max | |
| 1000 #endif | |
| 1001 | |
| 1002 #ifdef min | |
| 1003 #undef min | |
| 1004 #endif | |
| 1005 | |
| 1006 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
| 1007 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
| 1008 | |
| 1009 // It is necessary to use templates here. Having normal overloaded | |
| 1010 // functions does not work because it is necessary to provide both 32- | |
| 1011 // and 64-bit overloaded functions, which does not work, and having | |
| 1012 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
| 1013 // will be even more error-prone than macros. | |
| 1014 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
| 1015 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
| 1016 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
| 1017 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
| 1018 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
| 1019 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
| 1020 | |
| 1021 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
| 1022 | |
| 1023 // true if x is a power of 2, false otherwise | |
| 1024 inline bool is_power_of_2(intptr_t x) { | |
| 1025 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
| 1026 } | |
| 1027 | |
| 1028 // long version of is_power_of_2 | |
| 1029 inline bool is_power_of_2_long(jlong x) { | |
| 1030 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
| 1031 } | |
| 1032 | |
| 1033 //* largest i such that 2^i <= x | |
| 1034 // A negative value of 'x' will return '31' | |
| 1035 inline int log2_intptr(intptr_t x) { | |
| 1036 int i = -1; | |
| 1037 uintptr_t p = 1; | |
| 1038 while (p != 0 && p <= (uintptr_t)x) { | |
| 1039 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
| 1040 i++; p *= 2; | |
| 1041 } | |
| 1042 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
| 605 | 1043 // (if p = 0 then overflow occurred and i = 31) |
| 0 | 1044 return i; |
| 1045 } | |
| 1046 | |
| 1047 //* largest i such that 2^i <= x | |
| 1048 // A negative value of 'x' will return '63' | |
| 1049 inline int log2_long(jlong x) { | |
| 1050 int i = -1; | |
| 1051 julong p = 1; | |
| 1052 while (p != 0 && p <= (julong)x) { | |
| 1053 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
| 1054 i++; p *= 2; | |
| 1055 } | |
| 1056 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
| 605 | 1057 // (if p = 0 then overflow occurred and i = 63) |
| 0 | 1058 return i; |
| 1059 } | |
| 1060 | |
| 1061 //* the argument must be exactly a power of 2 | |
| 1062 inline int exact_log2(intptr_t x) { | |
| 1063 #ifdef ASSERT | |
| 1064 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
| 1065 #endif | |
| 1066 return log2_intptr(x); | |
| 1067 } | |
| 1068 | |
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1069 //* the argument must be exactly a power of 2 |
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1070 inline int exact_log2_long(jlong x) { |
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1071 #ifdef ASSERT |
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1072 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
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1073 #endif |
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1074 return log2_long(x); |
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1075 } |
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1076 |
| 0 | 1077 |
| 1078 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
| 1079 inline intptr_t round_to(intptr_t x, uintx s) { | |
| 1080 #ifdef ASSERT | |
| 1081 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
| 1082 #endif | |
| 1083 const uintx m = s - 1; | |
| 1084 return mask_bits(x + m, ~m); | |
| 1085 } | |
| 1086 | |
| 1087 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
| 1088 inline intptr_t round_down(intptr_t x, uintx s) { | |
| 1089 #ifdef ASSERT | |
| 1090 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
| 1091 #endif | |
| 1092 const uintx m = s - 1; | |
| 1093 return mask_bits(x, ~m); | |
| 1094 } | |
| 1095 | |
| 1096 | |
| 1097 inline bool is_odd (intx x) { return x & 1; } | |
| 1098 inline bool is_even(intx x) { return !is_odd(x); } | |
| 1099 | |
| 1100 // "to" should be greater than "from." | |
| 1101 inline intx byte_size(void* from, void* to) { | |
| 1102 return (address)to - (address)from; | |
| 1103 } | |
| 1104 | |
| 1105 //---------------------------------------------------------------------------------------------------- | |
| 1106 // Avoid non-portable casts with these routines (DEPRECATED) | |
| 1107 | |
| 1108 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
| 1109 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
| 1110 | |
| 1111 // Given sequence of four bytes, build into a 32-bit word | |
| 1112 // following the conventions used in class files. | |
| 1113 // On the 386, this could be realized with a simple address cast. | |
| 1114 // | |
| 1115 | |
| 1116 // This routine takes eight bytes: | |
| 1117 inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
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1118 return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
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1119 | (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
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1120 | (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
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1121 | (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
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1122 | (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
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1123 | (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
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1124 | (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
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1125 | (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
| 0 | 1126 } |
| 1127 | |
| 1128 // This routine takes four bytes: | |
| 1129 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
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1130 return (( u4(c1) << 24 ) & 0xff000000) |
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1131 | (( u4(c2) << 16 ) & 0x00ff0000) |
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1132 | (( u4(c3) << 8 ) & 0x0000ff00) |
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1133 | (( u4(c4) << 0 ) & 0x000000ff); |
| 0 | 1134 } |
| 1135 | |
| 1136 // And this one works if the four bytes are contiguous in memory: | |
| 1137 inline u4 build_u4_from( u1* p ) { | |
| 1138 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
| 1139 } | |
| 1140 | |
| 1141 // Ditto for two-byte ints: | |
| 1142 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
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1143 return u2((( u2(c1) << 8 ) & 0xff00) |
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1144 | (( u2(c2) << 0 ) & 0x00ff)); |
| 0 | 1145 } |
| 1146 | |
| 1147 // And this one works if the two bytes are contiguous in memory: | |
| 1148 inline u2 build_u2_from( u1* p ) { | |
| 1149 return build_u2_from( p[0], p[1] ); | |
| 1150 } | |
| 1151 | |
| 1152 // Ditto for floats: | |
| 1153 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
| 1154 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
| 1155 return *(jfloat*)&u; | |
| 1156 } | |
| 1157 | |
| 1158 inline jfloat build_float_from( u1* p ) { | |
| 1159 u4 u = build_u4_from( p ); | |
| 1160 return *(jfloat*)&u; | |
| 1161 } | |
| 1162 | |
| 1163 | |
| 1164 // now (64-bit) longs | |
| 1165 | |
| 1166 inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
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1167 return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
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1168 | (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
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1169 | (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
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1170 | (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
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1171 | (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
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1172 | (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
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1173 | (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
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1174 | (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
| 0 | 1175 } |
| 1176 | |
| 1177 inline jlong build_long_from( u1* p ) { | |
| 1178 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
| 1179 } | |
| 1180 | |
| 1181 | |
| 1182 // Doubles, too! | |
| 1183 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
| 1184 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
| 1185 return *(jdouble*)&u; | |
| 1186 } | |
| 1187 | |
| 1188 inline jdouble build_double_from( u1* p ) { | |
| 1189 jlong u = build_long_from( p ); | |
| 1190 return *(jdouble*)&u; | |
| 1191 } | |
| 1192 | |
| 1193 | |
| 1194 // Portable routines to go the other way: | |
| 1195 | |
| 1196 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
| 1197 c1 = u1(x >> 8); | |
| 1198 c2 = u1(x); | |
| 1199 } | |
| 1200 | |
| 1201 inline void explode_short_to( u2 x, u1* p ) { | |
| 1202 explode_short_to( x, p[0], p[1]); | |
| 1203 } | |
| 1204 | |
| 1205 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
| 1206 c1 = u1(x >> 24); | |
| 1207 c2 = u1(x >> 16); | |
| 1208 c3 = u1(x >> 8); | |
| 1209 c4 = u1(x); | |
| 1210 } | |
| 1211 | |
| 1212 inline void explode_int_to( u4 x, u1* p ) { | |
| 1213 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
| 1214 } | |
| 1215 | |
| 1216 | |
| 1217 // Pack and extract shorts to/from ints: | |
| 1218 | |
| 1219 inline int extract_low_short_from_int(jint x) { | |
| 1220 return x & 0xffff; | |
| 1221 } | |
| 1222 | |
| 1223 inline int extract_high_short_from_int(jint x) { | |
| 1224 return (x >> 16) & 0xffff; | |
| 1225 } | |
| 1226 | |
| 1227 inline int build_int_from_shorts( jushort low, jushort high ) { | |
| 1228 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
| 1229 } | |
| 1230 | |
| 1231 // Printf-style formatters for fixed- and variable-width types as pointers and | |
| 3960 | 1232 // integers. These are derived from the definitions in inttypes.h. If the platform |
| 1233 // doesn't provide appropriate definitions, they should be provided in | |
| 1234 // the compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
| 0 | 1235 |
| 2361 | 1236 #define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
| 2152 | 1237 |
| 0 | 1238 // Format 32-bit quantities. |
| 3960 | 1239 #define INT32_FORMAT "%" PRId32 |
| 1240 #define UINT32_FORMAT "%" PRIu32 | |
| 1241 #define INT32_FORMAT_W(width) "%" #width PRId32 | |
| 1242 #define UINT32_FORMAT_W(width) "%" #width PRIu32 | |
| 0 | 1243 |
| 3960 | 1244 #define PTR32_FORMAT "0x%08" PRIx32 |
| 0 | 1245 |
| 1246 // Format 64-bit quantities. | |
| 3960 | 1247 #define INT64_FORMAT "%" PRId64 |
| 1248 #define UINT64_FORMAT "%" PRIu64 | |
| 1249 #define INT64_FORMAT_W(width) "%" #width PRId64 | |
| 1250 #define UINT64_FORMAT_W(width) "%" #width PRIu64 | |
| 0 | 1251 |
| 3960 | 1252 #define PTR64_FORMAT "0x%016" PRIx64 |
| 0 | 1253 |
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1254 // Format jlong, if necessary |
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1255 #ifndef JLONG_FORMAT |
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1256 #define JLONG_FORMAT INT64_FORMAT |
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1257 #endif |
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1258 #ifndef JULONG_FORMAT |
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1259 #define JULONG_FORMAT UINT64_FORMAT |
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1260 #endif |
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1261 |
| 3960 | 1262 // Format pointers which change size between 32- and 64-bit. |
| 0 | 1263 #ifdef _LP64 |
| 3960 | 1264 #define INTPTR_FORMAT "0x%016" PRIxPTR |
| 1265 #define PTR_FORMAT "0x%016" PRIxPTR | |
| 0 | 1266 #else // !_LP64 |
| 3960 | 1267 #define INTPTR_FORMAT "0x%08" PRIxPTR |
| 1268 #define PTR_FORMAT "0x%08" PRIxPTR | |
| 0 | 1269 #endif // _LP64 |
| 1270 | |
| 3960 | 1271 #define SSIZE_FORMAT "%" PRIdPTR |
| 1272 #define SIZE_FORMAT "%" PRIuPTR | |
| 1273 #define SSIZE_FORMAT_W(width) "%" #width PRIdPTR | |
| 1274 #define SIZE_FORMAT_W(width) "%" #width PRIuPTR | |
| 1275 | |
| 1276 #define INTX_FORMAT "%" PRIdPTR | |
| 1277 #define UINTX_FORMAT "%" PRIuPTR | |
| 1278 #define INTX_FORMAT_W(width) "%" #width PRIdPTR | |
| 1279 #define UINTX_FORMAT_W(width) "%" #width PRIuPTR | |
| 1280 | |
| 0 | 1281 |
| 1282 // Enable zap-a-lot if in debug version. | |
| 1283 | |
| 1284 # ifdef ASSERT | |
| 1285 # ifdef COMPILER2 | |
| 1286 # define ENABLE_ZAP_DEAD_LOCALS | |
| 1287 #endif /* COMPILER2 */ | |
| 1288 # endif /* ASSERT */ | |
| 1289 | |
| 1290 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) | |
| 1972 | 1291 |
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1292 // Dereference vptr |
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1293 // All C++ compilers that we know of have the vtbl pointer in the first |
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1294 // word. If there are exceptions, this function needs to be made compiler |
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1295 // specific. |
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1296 static inline void* dereference_vptr(void* addr) { |
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1297 return *(void**)addr; |
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1298 } |
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1299 |
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1300 |
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1301 #ifndef PRODUCT |
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1302 |
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1303 // For unit testing only |
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1304 class GlobalDefinitions { |
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1305 public: |
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1306 static void test_globals(); |
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1307 }; |
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1308 |
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1309 #endif // PRODUCT |
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1310 |
| 1972 | 1311 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |