Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/globalDefinitions.hpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
author | kvn |
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date | Thu, 20 Mar 2014 17:49:27 -0700 |
parents | 610be0309a79 |
children | 62c54fcc0a35 |
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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; | |
263
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123 private: |
0 | 124 char* i; |
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125 #ifndef PRODUCT |
263
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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 | |
12837 | 329 // Default ProtectionDomainCacheSize values |
330 | |
331 const int defaultProtectionDomainCacheSize = NOT_LP64(137) LP64_ONLY(2017); | |
0 | 332 |
333 //---------------------------------------------------------------------------------------------------- | |
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334 // Default and minimum StringTableSize values |
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335 |
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336 const int defaultStringTableSize = NOT_LP64(1009) LP64_ONLY(60013); |
12837 | 337 const int minimumStringTableSize = 1009; |
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338 |
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339 const int defaultSymbolTableSize = 20011; |
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340 const int minimumSymbolTableSize = 1009; |
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341 |
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342 |
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343 //---------------------------------------------------------------------------------------------------- |
0 | 344 // HotSwap - for JVMTI aka Class File Replacement and PopFrame |
345 // | |
346 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
347 | |
348 #define HOTSWAP | |
349 | |
350 //---------------------------------------------------------------------------------------------------- | |
351 // Object alignment, in units of HeapWords. | |
352 // | |
353 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
354 // reference fields can be naturally aligned. | |
355 | |
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356 extern int MinObjAlignment; |
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357 extern int MinObjAlignmentInBytes; |
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358 extern int MinObjAlignmentInBytesMask; |
0 | 359 |
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360 extern int LogMinObjAlignment; |
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361 extern int LogMinObjAlignmentInBytes; |
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362 |
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363 const int LogKlassAlignmentInBytes = 3; |
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364 const int LogKlassAlignment = LogKlassAlignmentInBytes - LogHeapWordSize; |
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365 const int KlassAlignmentInBytes = 1 << LogKlassAlignmentInBytes; |
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366 const int KlassAlignment = KlassAlignmentInBytes / HeapWordSize; |
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367 |
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368 // Klass encoding metaspace max size |
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369 const uint64_t KlassEncodingMetaspaceMax = (uint64_t(max_juint) + 1) << LogKlassAlignmentInBytes; |
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370 |
0 | 371 // Machine dependent stuff |
372 | |
17780 | 373 #if defined(X86) && defined(COMPILER2) && !defined(JAVASE_EMBEDDED) |
374 // Include Restricted Transactional Memory lock eliding optimization | |
375 #define INCLUDE_RTM_OPT 1 | |
376 #define RTM_OPT_ONLY(code) code | |
377 #else | |
378 #define INCLUDE_RTM_OPT 0 | |
379 #define RTM_OPT_ONLY(code) | |
380 #endif | |
381 // States of Restricted Transactional Memory usage. | |
382 enum RTMState { | |
383 NoRTM = 0x2, // Don't use RTM | |
384 UseRTM = 0x1, // Use RTM | |
385 ProfileRTM = 0x0 // Use RTM with abort ratio calculation | |
386 }; | |
387 | |
1972 | 388 #ifdef TARGET_ARCH_x86 |
389 # include "globalDefinitions_x86.hpp" | |
390 #endif | |
391 #ifdef TARGET_ARCH_sparc | |
392 # include "globalDefinitions_sparc.hpp" | |
393 #endif | |
394 #ifdef TARGET_ARCH_zero | |
395 # include "globalDefinitions_zero.hpp" | |
396 #endif | |
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397 #ifdef TARGET_ARCH_arm |
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398 # include "globalDefinitions_arm.hpp" |
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399 #endif |
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400 #ifdef TARGET_ARCH_ppc |
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401 # include "globalDefinitions_ppc.hpp" |
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402 #endif |
1972 | 403 |
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404 /* |
11129 | 405 * If a platform does not support native stack walking |
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406 * the platform specific globalDefinitions (above) |
11129 | 407 * can set PLATFORM_NATIVE_STACK_WALKING_SUPPORTED to 0 |
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408 */ |
11129 | 409 #ifndef PLATFORM_NATIVE_STACK_WALKING_SUPPORTED |
410 #define PLATFORM_NATIVE_STACK_WALKING_SUPPORTED 1 | |
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411 #endif |
0 | 412 |
413 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
414 // Note: this value must be a power of 2 | |
415 | |
416 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
417 | |
418 // Signed variants of alignment helpers. There are two versions of each, a macro | |
419 // for use in places like enum definitions that require compile-time constant | |
420 // expressions and a function for all other places so as to get type checking. | |
421 | |
422 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
423 | |
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424 inline bool is_size_aligned(size_t size, size_t alignment) { |
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425 return align_size_up_(size, alignment) == size; |
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426 } |
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427 |
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428 inline bool is_ptr_aligned(void* ptr, size_t alignment) { |
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429 return align_size_up_((intptr_t)ptr, (intptr_t)alignment) == (intptr_t)ptr; |
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430 } |
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431 |
0 | 432 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { |
433 return align_size_up_(size, alignment); | |
434 } | |
435 | |
436 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
437 | |
438 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
439 return align_size_down_(size, alignment); | |
440 } | |
441 | |
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442 #define is_size_aligned_(size, alignment) ((size) == (align_size_up_(size, alignment))) |
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443 |
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444 inline void* align_ptr_up(void* ptr, size_t alignment) { |
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445 return (void*)align_size_up((intptr_t)ptr, (intptr_t)alignment); |
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446 } |
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447 |
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448 inline void* align_ptr_down(void* ptr, size_t alignment) { |
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449 return (void*)align_size_down((intptr_t)ptr, (intptr_t)alignment); |
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450 } |
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451 |
0 | 452 // Align objects by rounding up their size, in HeapWord units. |
453 | |
454 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
455 | |
456 inline intptr_t align_object_size(intptr_t size) { | |
457 return align_size_up(size, MinObjAlignment); | |
458 } | |
459 | |
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460 inline bool is_object_aligned(intptr_t addr) { |
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461 return addr == align_object_size(addr); |
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462 } |
0 | 463 |
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464 // Pad out certain offsets to jlong alignment, in HeapWord units. |
0 | 465 |
466 inline intptr_t align_object_offset(intptr_t offset) { | |
467 return align_size_up(offset, HeapWordsPerLong); | |
468 } | |
469 | |
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470 inline void* align_pointer_up(const void* addr, size_t size) { |
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471 return (void*) align_size_up_((uintptr_t)addr, size); |
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472 } |
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473 |
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474 // Align down with a lower bound. If the aligning results in 0, return 'alignment'. |
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475 |
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476 inline size_t align_size_down_bounded(size_t size, size_t alignment) { |
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477 size_t aligned_size = align_size_down_(size, alignment); |
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478 return aligned_size > 0 ? aligned_size : alignment; |
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479 } |
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480 |
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481 // Clamp an address to be within a specific page |
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482 // 1. If addr is on the page it is returned as is |
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483 // 2. If addr is above the page_address the start of the *next* page will be returned |
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484 // 3. Otherwise, if addr is below the page_address the start of the page will be returned |
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485 inline address clamp_address_in_page(address addr, address page_address, intptr_t page_size) { |
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486 if (align_size_down(intptr_t(addr), page_size) == align_size_down(intptr_t(page_address), page_size)) { |
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487 // address is in the specified page, just return it as is |
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488 return addr; |
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489 } else if (addr > page_address) { |
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490 // address is above specified page, return start of next page |
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491 return (address)align_size_down(intptr_t(page_address), page_size) + page_size; |
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492 } else { |
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493 // address is below specified page, return start of page |
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494 return (address)align_size_down(intptr_t(page_address), page_size); |
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495 } |
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496 } |
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497 |
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498 |
1665 | 499 // The expected size in bytes of a cache line, used to pad data structures. |
500 #define DEFAULT_CACHE_LINE_SIZE 64 | |
501 | |
0 | 502 |
503 //---------------------------------------------------------------------------------------------------- | |
504 // Utility macros for compilers | |
505 // used to silence compiler warnings | |
506 | |
507 #define Unused_Variable(var) var | |
508 | |
509 | |
510 //---------------------------------------------------------------------------------------------------- | |
511 // Miscellaneous | |
512 | |
513 // 6302670 Eliminate Hotspot __fabsf dependency | |
514 // All fabs() callers should call this function instead, which will implicitly | |
515 // convert the operand to double, avoiding a dependency on __fabsf which | |
516 // doesn't exist in early versions of Solaris 8. | |
517 inline double fabsd(double value) { | |
518 return fabs(value); | |
519 } | |
520 | |
521 inline jint low (jlong value) { return jint(value); } | |
522 inline jint high(jlong value) { return jint(value >> 32); } | |
523 | |
524 // the fancy casts are a hopefully portable way | |
525 // to do unsigned 32 to 64 bit type conversion | |
526 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
527 *value |= (jlong)(julong)(juint)low; } | |
528 | |
529 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
530 *value |= (jlong)high << 32; } | |
531 | |
532 inline jlong jlong_from(jint h, jint l) { | |
533 jlong result = 0; // initialization to avoid warning | |
534 set_high(&result, h); | |
535 set_low(&result, l); | |
536 return result; | |
537 } | |
538 | |
539 union jlong_accessor { | |
540 jint words[2]; | |
541 jlong long_value; | |
542 }; | |
543 | |
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544 void basic_types_init(); // cannot define here; uses assert |
0 | 545 |
546 | |
547 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
548 enum BasicType { | |
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549 T_BOOLEAN = 4, |
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550 T_CHAR = 5, |
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551 T_FLOAT = 6, |
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552 T_DOUBLE = 7, |
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553 T_BYTE = 8, |
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554 T_SHORT = 9, |
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555 T_INT = 10, |
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556 T_LONG = 11, |
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557 T_OBJECT = 12, |
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558 T_ARRAY = 13, |
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559 T_VOID = 14, |
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560 T_ADDRESS = 15, |
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561 T_NARROWOOP = 16, |
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562 T_METADATA = 17, |
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563 T_NARROWKLASS = 18, |
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564 T_CONFLICT = 19, // for stack value type with conflicting contents |
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565 T_ILLEGAL = 99 |
0 | 566 }; |
567 | |
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568 inline bool is_java_primitive(BasicType t) { |
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569 return T_BOOLEAN <= t && t <= T_LONG; |
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570 } |
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571 |
710 | 572 inline bool is_subword_type(BasicType t) { |
573 // these guys are processed exactly like T_INT in calling sequences: | |
574 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
575 } | |
576 | |
577 inline bool is_signed_subword_type(BasicType t) { | |
578 return (t == T_BYTE || t == T_SHORT); | |
579 } | |
580 | |
0 | 581 // Convert a char from a classfile signature to a BasicType |
582 inline BasicType char2type(char c) { | |
583 switch( c ) { | |
584 case 'B': return T_BYTE; | |
585 case 'C': return T_CHAR; | |
586 case 'D': return T_DOUBLE; | |
587 case 'F': return T_FLOAT; | |
588 case 'I': return T_INT; | |
589 case 'J': return T_LONG; | |
590 case 'S': return T_SHORT; | |
591 case 'Z': return T_BOOLEAN; | |
592 case 'V': return T_VOID; | |
593 case 'L': return T_OBJECT; | |
594 case '[': return T_ARRAY; | |
595 } | |
596 return T_ILLEGAL; | |
597 } | |
598 | |
599 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
600 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
601 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
602 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
603 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
604 extern BasicType name2type(const char* name); | |
605 | |
606 // Auxilary math routines | |
607 // least common multiple | |
608 extern size_t lcm(size_t a, size_t b); | |
609 | |
610 | |
611 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
612 enum BasicTypeSize { | |
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613 T_BOOLEAN_size = 1, |
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614 T_CHAR_size = 1, |
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615 T_FLOAT_size = 1, |
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616 T_DOUBLE_size = 2, |
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617 T_BYTE_size = 1, |
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618 T_SHORT_size = 1, |
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619 T_INT_size = 1, |
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620 T_LONG_size = 2, |
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621 T_OBJECT_size = 1, |
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622 T_ARRAY_size = 1, |
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623 T_NARROWOOP_size = 1, |
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624 T_NARROWKLASS_size = 1, |
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625 T_VOID_size = 0 |
0 | 626 }; |
627 | |
628 | |
629 // maps a BasicType to its instance field storage type: | |
630 // all sub-word integral types are widened to T_INT | |
631 extern BasicType type2field[T_CONFLICT+1]; | |
632 extern BasicType type2wfield[T_CONFLICT+1]; | |
633 | |
634 | |
635 // size in bytes | |
636 enum ArrayElementSize { | |
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637 T_BOOLEAN_aelem_bytes = 1, |
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638 T_CHAR_aelem_bytes = 2, |
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639 T_FLOAT_aelem_bytes = 4, |
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640 T_DOUBLE_aelem_bytes = 8, |
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641 T_BYTE_aelem_bytes = 1, |
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642 T_SHORT_aelem_bytes = 2, |
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643 T_INT_aelem_bytes = 4, |
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644 T_LONG_aelem_bytes = 8, |
0 | 645 #ifdef _LP64 |
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646 T_OBJECT_aelem_bytes = 8, |
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647 T_ARRAY_aelem_bytes = 8, |
0 | 648 #else |
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649 T_OBJECT_aelem_bytes = 4, |
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650 T_ARRAY_aelem_bytes = 4, |
0 | 651 #endif |
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652 T_NARROWOOP_aelem_bytes = 4, |
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653 T_NARROWKLASS_aelem_bytes = 4, |
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654 T_VOID_aelem_bytes = 0 |
0 | 655 }; |
656 | |
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657 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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658 #ifdef ASSERT |
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659 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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660 #else |
1763 | 661 inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
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662 #endif |
0 | 663 |
664 | |
665 // JavaValue serves as a container for arbitrary Java values. | |
666 | |
667 class JavaValue { | |
668 | |
669 public: | |
670 typedef union JavaCallValue { | |
671 jfloat f; | |
672 jdouble d; | |
673 jint i; | |
674 jlong l; | |
675 jobject h; | |
676 } JavaCallValue; | |
677 | |
678 private: | |
679 BasicType _type; | |
680 JavaCallValue _value; | |
681 | |
682 public: | |
683 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
684 | |
685 JavaValue(jfloat value) { | |
686 _type = T_FLOAT; | |
687 _value.f = value; | |
688 } | |
689 | |
690 JavaValue(jdouble value) { | |
691 _type = T_DOUBLE; | |
692 _value.d = value; | |
693 } | |
694 | |
695 jfloat get_jfloat() const { return _value.f; } | |
696 jdouble get_jdouble() const { return _value.d; } | |
697 jint get_jint() const { return _value.i; } | |
698 jlong get_jlong() const { return _value.l; } | |
699 jobject get_jobject() const { return _value.h; } | |
700 JavaCallValue* get_value_addr() { return &_value; } | |
701 BasicType get_type() const { return _type; } | |
702 | |
703 void set_jfloat(jfloat f) { _value.f = f;} | |
704 void set_jdouble(jdouble d) { _value.d = d;} | |
705 void set_jint(jint i) { _value.i = i;} | |
706 void set_jlong(jlong l) { _value.l = l;} | |
707 void set_jobject(jobject h) { _value.h = h;} | |
708 void set_type(BasicType t) { _type = t; } | |
709 | |
710 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
711 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
712 jchar get_jchar() const { return (jchar) (_value.i);} | |
713 jshort get_jshort() const { return (jshort) (_value.i);} | |
714 | |
715 }; | |
716 | |
717 | |
718 #define STACK_BIAS 0 | |
719 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
720 // in order to extend the reach of the stack pointer. | |
721 #if defined(SPARC) && defined(_LP64) | |
722 #undef STACK_BIAS | |
723 #define STACK_BIAS 0x7ff | |
724 #endif | |
725 | |
726 | |
727 // TosState describes the top-of-stack state before and after the execution of | |
728 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
729 // registers. The TosState corresponds to the 'machine represention' of this cached | |
730 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
731 // as well as a 5th state in case the top-of-stack value is actually on the top | |
732 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
733 // state when it comes to machine representation but is used separately for (oop) | |
734 // type specific operations (e.g. verification code). | |
735 | |
736 enum TosState { // describes the tos cache contents | |
737 btos = 0, // byte, bool tos cached | |
726
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738 ctos = 1, // char tos cached |
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739 stos = 2, // short tos cached |
0 | 740 itos = 3, // int tos cached |
741 ltos = 4, // long tos cached | |
742 ftos = 5, // float tos cached | |
743 dtos = 6, // double tos cached | |
744 atos = 7, // object cached | |
745 vtos = 8, // tos not cached | |
746 number_of_states, | |
747 ilgl // illegal state: should not occur | |
748 }; | |
749 | |
750 | |
751 inline TosState as_TosState(BasicType type) { | |
752 switch (type) { | |
753 case T_BYTE : return btos; | |
726
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754 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 755 case T_CHAR : return ctos; |
756 case T_SHORT : return stos; | |
757 case T_INT : return itos; | |
758 case T_LONG : return ltos; | |
759 case T_FLOAT : return ftos; | |
760 case T_DOUBLE : return dtos; | |
761 case T_VOID : return vtos; | |
762 case T_ARRAY : // fall through | |
763 case T_OBJECT : return atos; | |
764 } | |
765 return ilgl; | |
766 } | |
767 | |
726
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768 inline BasicType as_BasicType(TosState state) { |
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769 switch (state) { |
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770 //case ztos: return T_BOOLEAN;//FIXME |
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771 case btos : return T_BYTE; |
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772 case ctos : return T_CHAR; |
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773 case stos : return T_SHORT; |
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774 case itos : return T_INT; |
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775 case ltos : return T_LONG; |
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776 case ftos : return T_FLOAT; |
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777 case dtos : return T_DOUBLE; |
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778 case atos : return T_OBJECT; |
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779 case vtos : return T_VOID; |
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780 } |
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781 return T_ILLEGAL; |
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782 } |
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783 |
0 | 784 |
785 // Helper function to convert BasicType info into TosState | |
786 // Note: Cannot define here as it uses global constant at the time being. | |
787 TosState as_TosState(BasicType type); | |
788 | |
789 | |
790 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
791 // information is needed by the safepoint code. | |
792 // | |
793 // There are 4 essential states: | |
794 // | |
795 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
796 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
797 // _thread_in_vm : Executing in the vm | |
798 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
799 // | |
800 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
801 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
802 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
803 // | |
804 // Given a state, the xxx_trans state can always be found by adding 1. | |
805 // | |
806 enum JavaThreadState { | |
807 _thread_uninitialized = 0, // should never happen (missing initialization) | |
808 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
809 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
810 _thread_in_native = 4, // running in native code | |
811 _thread_in_native_trans = 5, // corresponding transition state | |
812 _thread_in_vm = 6, // running in VM | |
813 _thread_in_vm_trans = 7, // corresponding transition state | |
814 _thread_in_Java = 8, // running in Java or in stub code | |
815 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
816 _thread_blocked = 10, // blocked in vm | |
817 _thread_blocked_trans = 11, // corresponding transition state | |
818 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
819 }; | |
820 | |
821 | |
822 // Handy constants for deciding which compiler mode to use. | |
823 enum MethodCompilation { | |
824 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
825 InvalidOSREntryBci = -2 | |
826 }; | |
827 | |
828 // Enumeration to distinguish tiers of compilation | |
829 enum CompLevel { | |
1783 | 830 CompLevel_any = -1, |
831 CompLevel_all = -1, | |
832 CompLevel_none = 0, // Interpreter | |
833 CompLevel_simple = 1, // C1 | |
834 CompLevel_limited_profile = 2, // C1, invocation & backedge counters | |
835 CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo | |
2447 | 836 CompLevel_full_optimization = 4, // C2 or Shark |
0 | 837 |
2447 | 838 #if defined(COMPILER2) || defined(SHARK) |
1783 | 839 CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
840 #elif defined(COMPILER1) | |
841 CompLevel_highest_tier = CompLevel_simple, // pure C1 | |
0 | 842 #else |
1783 | 843 CompLevel_highest_tier = CompLevel_none, |
844 #endif | |
845 | |
846 #if defined(TIERED) | |
847 CompLevel_initial_compile = CompLevel_full_profile // tiered | |
848 #elif defined(COMPILER1) | |
849 CompLevel_initial_compile = CompLevel_simple // pure C1 | |
2447 | 850 #elif defined(COMPILER2) || defined(SHARK) |
1783 | 851 CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
852 #else | |
853 CompLevel_initial_compile = CompLevel_none | |
854 #endif | |
0 | 855 }; |
856 | |
1783 | 857 inline bool is_c1_compile(int comp_level) { |
858 return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; | |
0 | 859 } |
1783 | 860 |
861 inline bool is_c2_compile(int comp_level) { | |
0 | 862 return comp_level == CompLevel_full_optimization; |
863 } | |
1783 | 864 |
0 | 865 inline bool is_highest_tier_compile(int comp_level) { |
866 return comp_level == CompLevel_highest_tier; | |
867 } | |
868 | |
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869 inline bool is_compile(int comp_level) { |
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870 return is_c1_compile(comp_level) || is_c2_compile(comp_level); |
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871 } |
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872 |
0 | 873 //---------------------------------------------------------------------------------------------------- |
874 // 'Forward' declarations of frequently used classes | |
875 // (in order to reduce interface dependencies & reduce | |
876 // number of unnecessary compilations after changes) | |
877 | |
878 class symbolTable; | |
879 class ClassFileStream; | |
880 | |
881 class Event; | |
882 | |
883 class Thread; | |
884 class VMThread; | |
885 class JavaThread; | |
886 class Threads; | |
887 | |
888 class VM_Operation; | |
889 class VMOperationQueue; | |
890 | |
891 class CodeBlob; | |
892 class nmethod; | |
893 class OSRAdapter; | |
894 class I2CAdapter; | |
895 class C2IAdapter; | |
896 class CompiledIC; | |
897 class relocInfo; | |
898 class ScopeDesc; | |
899 class PcDesc; | |
900 | |
901 class Recompiler; | |
902 class Recompilee; | |
903 class RecompilationPolicy; | |
904 class RFrame; | |
905 class CompiledRFrame; | |
906 class InterpretedRFrame; | |
907 | |
908 class frame; | |
909 | |
910 class vframe; | |
911 class javaVFrame; | |
912 class interpretedVFrame; | |
913 class compiledVFrame; | |
914 class deoptimizedVFrame; | |
915 class externalVFrame; | |
916 class entryVFrame; | |
917 | |
918 class RegisterMap; | |
919 | |
920 class Mutex; | |
921 class Monitor; | |
922 class BasicLock; | |
923 class BasicObjectLock; | |
924 | |
925 class PeriodicTask; | |
926 | |
927 class JavaCallWrapper; | |
928 | |
929 class oopDesc; | |
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930 class metaDataOopDesc; |
0 | 931 |
932 class NativeCall; | |
933 | |
934 class zone; | |
935 | |
936 class StubQueue; | |
937 | |
938 class outputStream; | |
939 | |
940 class ResourceArea; | |
941 | |
942 class DebugInformationRecorder; | |
943 class ScopeValue; | |
944 class CompressedStream; | |
945 class DebugInfoReadStream; | |
946 class DebugInfoWriteStream; | |
947 class LocationValue; | |
948 class ConstantValue; | |
949 class IllegalValue; | |
950 | |
951 class PrivilegedElement; | |
952 class MonitorArray; | |
953 | |
954 class MonitorInfo; | |
955 | |
956 class OffsetClosure; | |
957 class OopMapCache; | |
958 class InterpreterOopMap; | |
959 class OopMapCacheEntry; | |
960 class OSThread; | |
961 | |
962 typedef int (*OSThreadStartFunc)(void*); | |
963 | |
964 class Space; | |
965 | |
966 class JavaValue; | |
967 class methodHandle; | |
968 class JavaCallArguments; | |
969 | |
970 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
971 | |
972 extern void basic_fatal(const char* msg); | |
973 | |
974 | |
975 //---------------------------------------------------------------------------------------------------- | |
976 // Special constants for debugging | |
977 | |
978 const jint badInt = -3; // generic "bad int" value | |
979 const long badAddressVal = -2; // generic "bad address" value | |
980 const long badOopVal = -1; // generic "bad oop" value | |
981 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
982 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
983 const int badResourceValue = 0xAB; // value used to zap resource area | |
984 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
985 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
986 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
987 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
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988 const juint badMetaWordVal = 0xBAADFADE; // value used to zap metadata heap after GC |
0 | 989 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation |
990 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
991 | |
992 | |
993 // (These must be implemented as #defines because C++ compilers are | |
994 // not obligated to inline non-integral constants!) | |
995 #define badAddress ((address)::badAddressVal) | |
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996 #define badOop (cast_to_oop(::badOopVal)) |
0 | 997 #define badHeapWord (::badHeapWordVal) |
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998 #define badJNIHandle (cast_to_oop(::badJNIHandleVal)) |
0 | 999 |
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1000 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
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1001 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
0 | 1002 |
1003 //---------------------------------------------------------------------------------------------------- | |
1004 // Utility functions for bitfield manipulations | |
1005 | |
1006 const intptr_t AllBits = ~0; // all bits set in a word | |
1007 const intptr_t NoBits = 0; // no bits set in a word | |
1008 const jlong NoLongBits = 0; // no bits set in a long | |
1009 const intptr_t OneBit = 1; // only right_most bit set in a word | |
1010 | |
1011 // get a word with the n.th or the right-most or left-most n bits set | |
1012 // (note: #define used only so that they can be used in enum constant definitions) | |
1013 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
1014 #define right_n_bits(n) (nth_bit(n) - 1) | |
1015 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
1016 | |
1017 // bit-operations using a mask m | |
1018 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
1019 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
1020 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
1021 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
1022 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
1023 | |
1024 // bit-operations using the n.th bit | |
1025 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
1026 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
1027 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
1028 | |
1029 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
1030 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
1031 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
1032 } | |
1033 | |
1034 | |
1035 //---------------------------------------------------------------------------------------------------- | |
1036 // Utility functions for integers | |
1037 | |
1038 // Avoid use of global min/max macros which may cause unwanted double | |
1039 // evaluation of arguments. | |
1040 #ifdef max | |
1041 #undef max | |
1042 #endif | |
1043 | |
1044 #ifdef min | |
1045 #undef min | |
1046 #endif | |
1047 | |
1048 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
1049 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
1050 | |
1051 // It is necessary to use templates here. Having normal overloaded | |
1052 // functions does not work because it is necessary to provide both 32- | |
1053 // and 64-bit overloaded functions, which does not work, and having | |
1054 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
1055 // will be even more error-prone than macros. | |
1056 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
1057 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
1058 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
1059 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
1060 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
1061 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
1062 | |
1063 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
1064 | |
1065 // true if x is a power of 2, false otherwise | |
1066 inline bool is_power_of_2(intptr_t x) { | |
1067 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
1068 } | |
1069 | |
1070 // long version of is_power_of_2 | |
1071 inline bool is_power_of_2_long(jlong x) { | |
1072 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
1073 } | |
1074 | |
1075 //* largest i such that 2^i <= x | |
1076 // A negative value of 'x' will return '31' | |
1077 inline int log2_intptr(intptr_t x) { | |
1078 int i = -1; | |
1079 uintptr_t p = 1; | |
1080 while (p != 0 && p <= (uintptr_t)x) { | |
1081 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1082 i++; p *= 2; | |
1083 } | |
1084 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1085 // (if p = 0 then overflow occurred and i = 31) |
0 | 1086 return i; |
1087 } | |
1088 | |
1089 //* largest i such that 2^i <= x | |
1090 // A negative value of 'x' will return '63' | |
1091 inline int log2_long(jlong x) { | |
1092 int i = -1; | |
1093 julong p = 1; | |
1094 while (p != 0 && p <= (julong)x) { | |
1095 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1096 i++; p *= 2; | |
1097 } | |
1098 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1099 // (if p = 0 then overflow occurred and i = 63) |
0 | 1100 return i; |
1101 } | |
1102 | |
1103 //* the argument must be exactly a power of 2 | |
1104 inline int exact_log2(intptr_t x) { | |
1105 #ifdef ASSERT | |
1106 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
1107 #endif | |
1108 return log2_intptr(x); | |
1109 } | |
1110 | |
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1111 //* the argument must be exactly a power of 2 |
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1112 inline int exact_log2_long(jlong x) { |
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1113 #ifdef ASSERT |
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1114 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
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1115 #endif |
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1116 return log2_long(x); |
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1117 } |
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1118 |
0 | 1119 |
1120 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
1121 inline intptr_t round_to(intptr_t x, uintx s) { | |
1122 #ifdef ASSERT | |
1123 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1124 #endif | |
1125 const uintx m = s - 1; | |
1126 return mask_bits(x + m, ~m); | |
1127 } | |
1128 | |
1129 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
1130 inline intptr_t round_down(intptr_t x, uintx s) { | |
1131 #ifdef ASSERT | |
1132 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1133 #endif | |
1134 const uintx m = s - 1; | |
1135 return mask_bits(x, ~m); | |
1136 } | |
1137 | |
1138 | |
1139 inline bool is_odd (intx x) { return x & 1; } | |
1140 inline bool is_even(intx x) { return !is_odd(x); } | |
1141 | |
1142 // "to" should be greater than "from." | |
1143 inline intx byte_size(void* from, void* to) { | |
1144 return (address)to - (address)from; | |
1145 } | |
1146 | |
1147 //---------------------------------------------------------------------------------------------------- | |
1148 // Avoid non-portable casts with these routines (DEPRECATED) | |
1149 | |
1150 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
1151 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
1152 | |
1153 // Given sequence of four bytes, build into a 32-bit word | |
1154 // following the conventions used in class files. | |
1155 // On the 386, this could be realized with a simple address cast. | |
1156 // | |
1157 | |
1158 // This routine takes eight bytes: | |
1159 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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1160 return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
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1161 | (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
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1162 | (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
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1163 | (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
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1164 | (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
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1165 | (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
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1166 | (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
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1167 | (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
0 | 1168 } |
1169 | |
1170 // This routine takes four bytes: | |
1171 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
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1172 return (( u4(c1) << 24 ) & 0xff000000) |
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1173 | (( u4(c2) << 16 ) & 0x00ff0000) |
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1174 | (( u4(c3) << 8 ) & 0x0000ff00) |
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1175 | (( u4(c4) << 0 ) & 0x000000ff); |
0 | 1176 } |
1177 | |
1178 // And this one works if the four bytes are contiguous in memory: | |
1179 inline u4 build_u4_from( u1* p ) { | |
1180 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1181 } | |
1182 | |
1183 // Ditto for two-byte ints: | |
1184 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
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1185 return u2((( u2(c1) << 8 ) & 0xff00) |
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1186 | (( u2(c2) << 0 ) & 0x00ff)); |
0 | 1187 } |
1188 | |
1189 // And this one works if the two bytes are contiguous in memory: | |
1190 inline u2 build_u2_from( u1* p ) { | |
1191 return build_u2_from( p[0], p[1] ); | |
1192 } | |
1193 | |
1194 // Ditto for floats: | |
1195 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1196 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1197 return *(jfloat*)&u; | |
1198 } | |
1199 | |
1200 inline jfloat build_float_from( u1* p ) { | |
1201 u4 u = build_u4_from( p ); | |
1202 return *(jfloat*)&u; | |
1203 } | |
1204 | |
1205 | |
1206 // now (64-bit) longs | |
1207 | |
1208 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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1209 return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
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1210 | (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
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1211 | (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
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1212 | (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
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1213 | (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
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1214 | (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
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1215 | (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
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1216 | (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
0 | 1217 } |
1218 | |
1219 inline jlong build_long_from( u1* p ) { | |
1220 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1221 } | |
1222 | |
1223 | |
1224 // Doubles, too! | |
1225 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1226 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1227 return *(jdouble*)&u; | |
1228 } | |
1229 | |
1230 inline jdouble build_double_from( u1* p ) { | |
1231 jlong u = build_long_from( p ); | |
1232 return *(jdouble*)&u; | |
1233 } | |
1234 | |
1235 | |
1236 // Portable routines to go the other way: | |
1237 | |
1238 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1239 c1 = u1(x >> 8); | |
1240 c2 = u1(x); | |
1241 } | |
1242 | |
1243 inline void explode_short_to( u2 x, u1* p ) { | |
1244 explode_short_to( x, p[0], p[1]); | |
1245 } | |
1246 | |
1247 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1248 c1 = u1(x >> 24); | |
1249 c2 = u1(x >> 16); | |
1250 c3 = u1(x >> 8); | |
1251 c4 = u1(x); | |
1252 } | |
1253 | |
1254 inline void explode_int_to( u4 x, u1* p ) { | |
1255 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1256 } | |
1257 | |
1258 | |
1259 // Pack and extract shorts to/from ints: | |
1260 | |
1261 inline int extract_low_short_from_int(jint x) { | |
1262 return x & 0xffff; | |
1263 } | |
1264 | |
1265 inline int extract_high_short_from_int(jint x) { | |
1266 return (x >> 16) & 0xffff; | |
1267 } | |
1268 | |
1269 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1270 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1271 } | |
1272 | |
1273 // Printf-style formatters for fixed- and variable-width types as pointers and | |
3960 | 1274 // integers. These are derived from the definitions in inttypes.h. If the platform |
1275 // doesn't provide appropriate definitions, they should be provided in | |
1276 // the compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
0 | 1277 |
2361 | 1278 #define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
2152 | 1279 |
0 | 1280 // Format 32-bit quantities. |
3960 | 1281 #define INT32_FORMAT "%" PRId32 |
1282 #define UINT32_FORMAT "%" PRIu32 | |
1283 #define INT32_FORMAT_W(width) "%" #width PRId32 | |
1284 #define UINT32_FORMAT_W(width) "%" #width PRIu32 | |
0 | 1285 |
3960 | 1286 #define PTR32_FORMAT "0x%08" PRIx32 |
0 | 1287 |
1288 // Format 64-bit quantities. | |
3960 | 1289 #define INT64_FORMAT "%" PRId64 |
1290 #define UINT64_FORMAT "%" PRIu64 | |
1291 #define INT64_FORMAT_W(width) "%" #width PRId64 | |
1292 #define UINT64_FORMAT_W(width) "%" #width PRIu64 | |
0 | 1293 |
3960 | 1294 #define PTR64_FORMAT "0x%016" PRIx64 |
0 | 1295 |
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1296 // Format jlong, if necessary |
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1297 #ifndef JLONG_FORMAT |
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1298 #define JLONG_FORMAT INT64_FORMAT |
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1299 #endif |
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1300 #ifndef JULONG_FORMAT |
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1301 #define JULONG_FORMAT UINT64_FORMAT |
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1302 #endif |
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1303 |
3960 | 1304 // Format pointers which change size between 32- and 64-bit. |
0 | 1305 #ifdef _LP64 |
3960 | 1306 #define INTPTR_FORMAT "0x%016" PRIxPTR |
1307 #define PTR_FORMAT "0x%016" PRIxPTR | |
0 | 1308 #else // !_LP64 |
3960 | 1309 #define INTPTR_FORMAT "0x%08" PRIxPTR |
1310 #define PTR_FORMAT "0x%08" PRIxPTR | |
0 | 1311 #endif // _LP64 |
1312 | |
3960 | 1313 #define SSIZE_FORMAT "%" PRIdPTR |
1314 #define SIZE_FORMAT "%" PRIuPTR | |
1315 #define SSIZE_FORMAT_W(width) "%" #width PRIdPTR | |
1316 #define SIZE_FORMAT_W(width) "%" #width PRIuPTR | |
1317 | |
1318 #define INTX_FORMAT "%" PRIdPTR | |
1319 #define UINTX_FORMAT "%" PRIuPTR | |
1320 #define INTX_FORMAT_W(width) "%" #width PRIdPTR | |
1321 #define UINTX_FORMAT_W(width) "%" #width PRIuPTR | |
1322 | |
0 | 1323 |
1324 // Enable zap-a-lot if in debug version. | |
1325 | |
1326 # ifdef ASSERT | |
1327 # ifdef COMPILER2 | |
1328 # define ENABLE_ZAP_DEAD_LOCALS | |
1329 #endif /* COMPILER2 */ | |
1330 # endif /* ASSERT */ | |
1331 | |
1332 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) | |
1972 | 1333 |
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1334 // Dereference vptr |
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1335 // All C++ compilers that we know of have the vtbl pointer in the first |
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1336 // word. If there are exceptions, this function needs to be made compiler |
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1337 // specific. |
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1338 static inline void* dereference_vptr(void* addr) { |
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1339 return *(void**)addr; |
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1340 } |
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1341 |
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1342 |
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1343 #ifndef PRODUCT |
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1344 |
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1345 // For unit testing only |
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1346 class GlobalDefinitions { |
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1347 public: |
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1348 static void test_globals(); |
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1349 }; |
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1350 |
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1351 #endif // PRODUCT |
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1352 |
1972 | 1353 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |