Mercurial > hg > truffle
annotate src/share/vm/utilities/globalDefinitions.hpp @ 9099:ed81c74f92ff
Cache boolean flags instead of full Annotation objects
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 12 Apr 2013 16:05:56 -0700 |
parents | 89e4d67fdd2a |
children | 836a62f43af9 |
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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 | |
329 | |
330 //---------------------------------------------------------------------------------------------------- | |
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331 // Minimum StringTableSize value |
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332 |
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333 const int defaultStringTableSize=1009; |
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334 |
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335 |
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336 //---------------------------------------------------------------------------------------------------- |
0 | 337 // HotSwap - for JVMTI aka Class File Replacement and PopFrame |
338 // | |
339 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
340 | |
341 #define HOTSWAP | |
342 | |
343 //---------------------------------------------------------------------------------------------------- | |
344 // Object alignment, in units of HeapWords. | |
345 // | |
346 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
347 // reference fields can be naturally aligned. | |
348 | |
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349 extern int MinObjAlignment; |
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350 extern int MinObjAlignmentInBytes; |
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351 extern int MinObjAlignmentInBytesMask; |
0 | 352 |
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353 extern int LogMinObjAlignment; |
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354 extern int LogMinObjAlignmentInBytes; |
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355 |
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356 const int LogKlassAlignmentInBytes = 3; |
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357 const int LogKlassAlignment = LogKlassAlignmentInBytes - LogHeapWordSize; |
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358 const int KlassAlignmentInBytes = 1 << LogKlassAlignmentInBytes; |
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359 const int KlassAlignment = KlassAlignmentInBytes / HeapWordSize; |
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360 |
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361 // Klass encoding metaspace max size |
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362 const uint64_t KlassEncodingMetaspaceMax = (uint64_t(max_juint) + 1) << LogKlassAlignmentInBytes; |
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363 |
0 | 364 // Machine dependent stuff |
365 | |
1972 | 366 #ifdef TARGET_ARCH_x86 |
367 # include "globalDefinitions_x86.hpp" | |
368 #endif | |
369 #ifdef TARGET_ARCH_sparc | |
370 # include "globalDefinitions_sparc.hpp" | |
371 #endif | |
372 #ifdef TARGET_ARCH_zero | |
373 # include "globalDefinitions_zero.hpp" | |
374 #endif | |
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375 #ifdef TARGET_ARCH_arm |
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376 # include "globalDefinitions_arm.hpp" |
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377 #endif |
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378 #ifdef TARGET_ARCH_ppc |
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379 # include "globalDefinitions_ppc.hpp" |
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380 #endif |
1972 | 381 |
0 | 382 |
383 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
384 // Note: this value must be a power of 2 | |
385 | |
386 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
387 | |
388 // Signed variants of alignment helpers. There are two versions of each, a macro | |
389 // for use in places like enum definitions that require compile-time constant | |
390 // expressions and a function for all other places so as to get type checking. | |
391 | |
392 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
393 | |
394 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
395 return align_size_up_(size, alignment); | |
396 } | |
397 | |
398 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
399 | |
400 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
401 return align_size_down_(size, alignment); | |
402 } | |
403 | |
404 // Align objects by rounding up their size, in HeapWord units. | |
405 | |
406 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
407 | |
408 inline intptr_t align_object_size(intptr_t size) { | |
409 return align_size_up(size, MinObjAlignment); | |
410 } | |
411 | |
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412 inline bool is_object_aligned(intptr_t addr) { |
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413 return addr == align_object_size(addr); |
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414 } |
0 | 415 |
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416 // Pad out certain offsets to jlong alignment, in HeapWord units. |
0 | 417 |
418 inline intptr_t align_object_offset(intptr_t offset) { | |
419 return align_size_up(offset, HeapWordsPerLong); | |
420 } | |
421 | |
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422 // Clamp an address to be within a specific page |
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423 // 1. If addr is on the page it is returned as is |
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424 // 2. If addr is above the page_address the start of the *next* page will be returned |
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425 // 3. Otherwise, if addr is below the page_address the start of the page will be returned |
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426 inline address clamp_address_in_page(address addr, address page_address, intptr_t page_size) { |
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427 if (align_size_down(intptr_t(addr), page_size) == align_size_down(intptr_t(page_address), page_size)) { |
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428 // address is in the specified page, just return it as is |
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429 return addr; |
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430 } else if (addr > page_address) { |
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431 // address is above specified page, return start of next page |
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432 return (address)align_size_down(intptr_t(page_address), page_size) + page_size; |
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433 } else { |
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434 // address is below specified page, return start of page |
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435 return (address)align_size_down(intptr_t(page_address), page_size); |
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436 } |
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437 } |
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438 |
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439 |
1665 | 440 // The expected size in bytes of a cache line, used to pad data structures. |
441 #define DEFAULT_CACHE_LINE_SIZE 64 | |
442 | |
443 // Bytes needed to pad type to avoid cache-line sharing; alignment should be the | |
444 // expected cache line size (a power of two). The first addend avoids sharing | |
445 // when the start address is not a multiple of alignment; the second maintains | |
446 // alignment of starting addresses that happen to be a multiple. | |
447 #define PADDING_SIZE(type, alignment) \ | |
448 ((alignment) + align_size_up_(sizeof(type), alignment)) | |
449 | |
450 // Templates to create a subclass padded to avoid cache line sharing. These are | |
451 // effective only when applied to derived-most (leaf) classes. | |
452 | |
453 // When no args are passed to the base ctor. | |
454 template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
455 class Padded: public T { | |
456 private: | |
457 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
458 }; | |
459 | |
460 // When either 0 or 1 args may be passed to the base ctor. | |
461 template <class T, typename Arg1T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
462 class Padded01: public T { | |
463 public: | |
464 Padded01(): T() { } | |
465 Padded01(Arg1T arg1): T(arg1) { } | |
466 private: | |
467 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
468 }; | |
0 | 469 |
470 //---------------------------------------------------------------------------------------------------- | |
471 // Utility macros for compilers | |
472 // used to silence compiler warnings | |
473 | |
474 #define Unused_Variable(var) var | |
475 | |
476 | |
477 //---------------------------------------------------------------------------------------------------- | |
478 // Miscellaneous | |
479 | |
480 // 6302670 Eliminate Hotspot __fabsf dependency | |
481 // All fabs() callers should call this function instead, which will implicitly | |
482 // convert the operand to double, avoiding a dependency on __fabsf which | |
483 // doesn't exist in early versions of Solaris 8. | |
484 inline double fabsd(double value) { | |
485 return fabs(value); | |
486 } | |
487 | |
488 inline jint low (jlong value) { return jint(value); } | |
489 inline jint high(jlong value) { return jint(value >> 32); } | |
490 | |
491 // the fancy casts are a hopefully portable way | |
492 // to do unsigned 32 to 64 bit type conversion | |
493 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
494 *value |= (jlong)(julong)(juint)low; } | |
495 | |
496 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
497 *value |= (jlong)high << 32; } | |
498 | |
499 inline jlong jlong_from(jint h, jint l) { | |
500 jlong result = 0; // initialization to avoid warning | |
501 set_high(&result, h); | |
502 set_low(&result, l); | |
503 return result; | |
504 } | |
505 | |
506 union jlong_accessor { | |
507 jint words[2]; | |
508 jlong long_value; | |
509 }; | |
510 | |
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511 void basic_types_init(); // cannot define here; uses assert |
0 | 512 |
513 | |
514 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
515 enum BasicType { | |
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516 T_BOOLEAN = 4, |
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517 T_CHAR = 5, |
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518 T_FLOAT = 6, |
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519 T_DOUBLE = 7, |
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520 T_BYTE = 8, |
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521 T_SHORT = 9, |
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522 T_INT = 10, |
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523 T_LONG = 11, |
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524 T_OBJECT = 12, |
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525 T_ARRAY = 13, |
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526 T_VOID = 14, |
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527 T_ADDRESS = 15, |
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528 T_NARROWOOP = 16, |
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529 T_METADATA = 17, |
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530 T_NARROWKLASS = 18, |
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531 T_CONFLICT = 19, // for stack value type with conflicting contents |
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532 T_ILLEGAL = 99 |
0 | 533 }; |
534 | |
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535 inline bool is_java_primitive(BasicType t) { |
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536 return T_BOOLEAN <= t && t <= T_LONG; |
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537 } |
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538 |
710 | 539 inline bool is_subword_type(BasicType t) { |
540 // these guys are processed exactly like T_INT in calling sequences: | |
541 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
542 } | |
543 | |
544 inline bool is_signed_subword_type(BasicType t) { | |
545 return (t == T_BYTE || t == T_SHORT); | |
546 } | |
547 | |
0 | 548 // Convert a char from a classfile signature to a BasicType |
549 inline BasicType char2type(char c) { | |
550 switch( c ) { | |
551 case 'B': return T_BYTE; | |
552 case 'C': return T_CHAR; | |
553 case 'D': return T_DOUBLE; | |
554 case 'F': return T_FLOAT; | |
555 case 'I': return T_INT; | |
556 case 'J': return T_LONG; | |
557 case 'S': return T_SHORT; | |
558 case 'Z': return T_BOOLEAN; | |
559 case 'V': return T_VOID; | |
560 case 'L': return T_OBJECT; | |
561 case '[': return T_ARRAY; | |
562 } | |
563 return T_ILLEGAL; | |
564 } | |
565 | |
566 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
567 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
568 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
569 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
570 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
571 extern BasicType name2type(const char* name); | |
572 | |
573 // Auxilary math routines | |
574 // least common multiple | |
575 extern size_t lcm(size_t a, size_t b); | |
576 | |
577 | |
578 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
579 enum BasicTypeSize { | |
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580 T_BOOLEAN_size = 1, |
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581 T_CHAR_size = 1, |
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582 T_FLOAT_size = 1, |
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583 T_DOUBLE_size = 2, |
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584 T_BYTE_size = 1, |
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585 T_SHORT_size = 1, |
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586 T_INT_size = 1, |
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587 T_LONG_size = 2, |
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588 T_OBJECT_size = 1, |
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589 T_ARRAY_size = 1, |
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590 T_NARROWOOP_size = 1, |
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591 T_NARROWKLASS_size = 1, |
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592 T_VOID_size = 0 |
0 | 593 }; |
594 | |
595 | |
596 // maps a BasicType to its instance field storage type: | |
597 // all sub-word integral types are widened to T_INT | |
598 extern BasicType type2field[T_CONFLICT+1]; | |
599 extern BasicType type2wfield[T_CONFLICT+1]; | |
600 | |
601 | |
602 // size in bytes | |
603 enum ArrayElementSize { | |
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604 T_BOOLEAN_aelem_bytes = 1, |
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605 T_CHAR_aelem_bytes = 2, |
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606 T_FLOAT_aelem_bytes = 4, |
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607 T_DOUBLE_aelem_bytes = 8, |
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608 T_BYTE_aelem_bytes = 1, |
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609 T_SHORT_aelem_bytes = 2, |
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610 T_INT_aelem_bytes = 4, |
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611 T_LONG_aelem_bytes = 8, |
0 | 612 #ifdef _LP64 |
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613 T_OBJECT_aelem_bytes = 8, |
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614 T_ARRAY_aelem_bytes = 8, |
0 | 615 #else |
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616 T_OBJECT_aelem_bytes = 4, |
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617 T_ARRAY_aelem_bytes = 4, |
0 | 618 #endif |
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619 T_NARROWOOP_aelem_bytes = 4, |
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620 T_NARROWKLASS_aelem_bytes = 4, |
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621 T_VOID_aelem_bytes = 0 |
0 | 622 }; |
623 | |
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624 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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625 #ifdef ASSERT |
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626 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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627 #else |
1763 | 628 inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
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629 #endif |
0 | 630 |
631 | |
632 // JavaValue serves as a container for arbitrary Java values. | |
633 | |
634 class JavaValue { | |
635 | |
636 public: | |
637 typedef union JavaCallValue { | |
638 jfloat f; | |
639 jdouble d; | |
640 jint i; | |
641 jlong l; | |
642 jobject h; | |
643 } JavaCallValue; | |
644 | |
645 private: | |
646 BasicType _type; | |
647 JavaCallValue _value; | |
648 | |
649 public: | |
650 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
651 | |
652 JavaValue(jfloat value) { | |
653 _type = T_FLOAT; | |
654 _value.f = value; | |
655 } | |
656 | |
657 JavaValue(jdouble value) { | |
658 _type = T_DOUBLE; | |
659 _value.d = value; | |
660 } | |
661 | |
662 jfloat get_jfloat() const { return _value.f; } | |
663 jdouble get_jdouble() const { return _value.d; } | |
664 jint get_jint() const { return _value.i; } | |
665 jlong get_jlong() const { return _value.l; } | |
666 jobject get_jobject() const { return _value.h; } | |
667 JavaCallValue* get_value_addr() { return &_value; } | |
668 BasicType get_type() const { return _type; } | |
669 | |
670 void set_jfloat(jfloat f) { _value.f = f;} | |
671 void set_jdouble(jdouble d) { _value.d = d;} | |
672 void set_jint(jint i) { _value.i = i;} | |
673 void set_jlong(jlong l) { _value.l = l;} | |
674 void set_jobject(jobject h) { _value.h = h;} | |
675 void set_type(BasicType t) { _type = t; } | |
676 | |
677 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
678 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
679 jchar get_jchar() const { return (jchar) (_value.i);} | |
680 jshort get_jshort() const { return (jshort) (_value.i);} | |
681 | |
682 }; | |
683 | |
684 | |
685 #define STACK_BIAS 0 | |
686 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
687 // in order to extend the reach of the stack pointer. | |
688 #if defined(SPARC) && defined(_LP64) | |
689 #undef STACK_BIAS | |
690 #define STACK_BIAS 0x7ff | |
691 #endif | |
692 | |
693 | |
694 // TosState describes the top-of-stack state before and after the execution of | |
695 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
696 // registers. The TosState corresponds to the 'machine represention' of this cached | |
697 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
698 // as well as a 5th state in case the top-of-stack value is actually on the top | |
699 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
700 // state when it comes to machine representation but is used separately for (oop) | |
701 // type specific operations (e.g. verification code). | |
702 | |
703 enum TosState { // describes the tos cache contents | |
704 btos = 0, // byte, bool tos cached | |
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705 ctos = 1, // char tos cached |
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706 stos = 2, // short tos cached |
0 | 707 itos = 3, // int tos cached |
708 ltos = 4, // long tos cached | |
709 ftos = 5, // float tos cached | |
710 dtos = 6, // double tos cached | |
711 atos = 7, // object cached | |
712 vtos = 8, // tos not cached | |
713 number_of_states, | |
714 ilgl // illegal state: should not occur | |
715 }; | |
716 | |
717 | |
718 inline TosState as_TosState(BasicType type) { | |
719 switch (type) { | |
720 case T_BYTE : return btos; | |
726
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721 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 722 case T_CHAR : return ctos; |
723 case T_SHORT : return stos; | |
724 case T_INT : return itos; | |
725 case T_LONG : return ltos; | |
726 case T_FLOAT : return ftos; | |
727 case T_DOUBLE : return dtos; | |
728 case T_VOID : return vtos; | |
729 case T_ARRAY : // fall through | |
730 case T_OBJECT : return atos; | |
731 } | |
732 return ilgl; | |
733 } | |
734 | |
726
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735 inline BasicType as_BasicType(TosState state) { |
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736 switch (state) { |
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737 //case ztos: return T_BOOLEAN;//FIXME |
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738 case btos : return T_BYTE; |
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739 case ctos : return T_CHAR; |
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740 case stos : return T_SHORT; |
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741 case itos : return T_INT; |
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742 case ltos : return T_LONG; |
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743 case ftos : return T_FLOAT; |
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744 case dtos : return T_DOUBLE; |
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745 case atos : return T_OBJECT; |
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746 case vtos : return T_VOID; |
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747 } |
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748 return T_ILLEGAL; |
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749 } |
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750 |
0 | 751 |
752 // Helper function to convert BasicType info into TosState | |
753 // Note: Cannot define here as it uses global constant at the time being. | |
754 TosState as_TosState(BasicType type); | |
755 | |
756 | |
757 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
758 | |
759 enum ReferenceType { | |
760 REF_NONE, // Regular class | |
761 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
762 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
763 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
764 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
765 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
766 }; | |
767 | |
768 | |
769 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
770 // information is needed by the safepoint code. | |
771 // | |
772 // There are 4 essential states: | |
773 // | |
774 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
775 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
776 // _thread_in_vm : Executing in the vm | |
777 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
778 // | |
779 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
780 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
781 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
782 // | |
783 // Given a state, the xxx_trans state can always be found by adding 1. | |
784 // | |
785 enum JavaThreadState { | |
786 _thread_uninitialized = 0, // should never happen (missing initialization) | |
787 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
788 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
789 _thread_in_native = 4, // running in native code | |
790 _thread_in_native_trans = 5, // corresponding transition state | |
791 _thread_in_vm = 6, // running in VM | |
792 _thread_in_vm_trans = 7, // corresponding transition state | |
793 _thread_in_Java = 8, // running in Java or in stub code | |
794 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
795 _thread_blocked = 10, // blocked in vm | |
796 _thread_blocked_trans = 11, // corresponding transition state | |
797 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
798 }; | |
799 | |
800 | |
801 // Handy constants for deciding which compiler mode to use. | |
802 enum MethodCompilation { | |
803 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
804 InvalidOSREntryBci = -2 | |
805 }; | |
806 | |
807 // Enumeration to distinguish tiers of compilation | |
808 enum CompLevel { | |
1783 | 809 CompLevel_any = -1, |
810 CompLevel_all = -1, | |
811 CompLevel_none = 0, // Interpreter | |
812 CompLevel_simple = 1, // C1 | |
813 CompLevel_limited_profile = 2, // C1, invocation & backedge counters | |
814 CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo | |
2447 | 815 CompLevel_full_optimization = 4, // C2 or Shark |
0 | 816 |
2447 | 817 #if defined(COMPILER2) || defined(SHARK) |
1783 | 818 CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
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819 #elif defined(COMPILER1) || defined(GRAAL) |
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820 CompLevel_highest_tier = CompLevel_simple, // pure C1 or Graal |
0 | 821 #else |
1783 | 822 CompLevel_highest_tier = CompLevel_none, |
823 #endif | |
824 | |
825 #if defined(TIERED) | |
826 CompLevel_initial_compile = CompLevel_full_profile // tiered | |
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827 #elif defined(COMPILER1) || defined(GRAAL) |
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828 CompLevel_initial_compile = CompLevel_simple // pure C1 or Graal |
2447 | 829 #elif defined(COMPILER2) || defined(SHARK) |
1783 | 830 CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
831 #else | |
832 CompLevel_initial_compile = CompLevel_none | |
833 #endif | |
0 | 834 }; |
835 | |
1783 | 836 inline bool is_c1_compile(int comp_level) { |
837 return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; | |
0 | 838 } |
1783 | 839 |
840 inline bool is_c2_compile(int comp_level) { | |
0 | 841 return comp_level == CompLevel_full_optimization; |
842 } | |
1783 | 843 |
0 | 844 inline bool is_highest_tier_compile(int comp_level) { |
845 return comp_level == CompLevel_highest_tier; | |
846 } | |
847 | |
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848 inline bool is_compile(int comp_level) { |
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849 return is_c1_compile(comp_level) || is_c2_compile(comp_level); |
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850 } |
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851 |
0 | 852 //---------------------------------------------------------------------------------------------------- |
853 // 'Forward' declarations of frequently used classes | |
854 // (in order to reduce interface dependencies & reduce | |
855 // number of unnecessary compilations after changes) | |
856 | |
857 class symbolTable; | |
858 class ClassFileStream; | |
859 | |
860 class Event; | |
861 | |
862 class Thread; | |
863 class VMThread; | |
864 class JavaThread; | |
865 class Threads; | |
866 | |
867 class VM_Operation; | |
868 class VMOperationQueue; | |
869 | |
870 class CodeBlob; | |
871 class nmethod; | |
872 class OSRAdapter; | |
873 class I2CAdapter; | |
874 class C2IAdapter; | |
875 class CompiledIC; | |
876 class relocInfo; | |
877 class ScopeDesc; | |
878 class PcDesc; | |
879 | |
880 class Recompiler; | |
881 class Recompilee; | |
882 class RecompilationPolicy; | |
883 class RFrame; | |
884 class CompiledRFrame; | |
885 class InterpretedRFrame; | |
886 | |
887 class frame; | |
888 | |
889 class vframe; | |
890 class javaVFrame; | |
891 class interpretedVFrame; | |
892 class compiledVFrame; | |
893 class deoptimizedVFrame; | |
894 class externalVFrame; | |
895 class entryVFrame; | |
896 | |
897 class RegisterMap; | |
898 | |
899 class Mutex; | |
900 class Monitor; | |
901 class BasicLock; | |
902 class BasicObjectLock; | |
903 | |
904 class PeriodicTask; | |
905 | |
906 class JavaCallWrapper; | |
907 | |
908 class oopDesc; | |
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909 class metaDataOopDesc; |
0 | 910 |
911 class NativeCall; | |
912 | |
913 class zone; | |
914 | |
915 class StubQueue; | |
916 | |
917 class outputStream; | |
918 | |
919 class ResourceArea; | |
920 | |
921 class DebugInformationRecorder; | |
922 class ScopeValue; | |
923 class CompressedStream; | |
924 class DebugInfoReadStream; | |
925 class DebugInfoWriteStream; | |
926 class LocationValue; | |
927 class ConstantValue; | |
928 class IllegalValue; | |
929 | |
930 class PrivilegedElement; | |
931 class MonitorArray; | |
932 | |
933 class MonitorInfo; | |
934 | |
935 class OffsetClosure; | |
936 class OopMapCache; | |
937 class InterpreterOopMap; | |
938 class OopMapCacheEntry; | |
939 class OSThread; | |
940 | |
941 typedef int (*OSThreadStartFunc)(void*); | |
942 | |
943 class Space; | |
944 | |
945 class JavaValue; | |
946 class methodHandle; | |
947 class JavaCallArguments; | |
948 | |
949 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
950 | |
951 extern void basic_fatal(const char* msg); | |
952 | |
953 | |
954 //---------------------------------------------------------------------------------------------------- | |
955 // Special constants for debugging | |
956 | |
957 const jint badInt = -3; // generic "bad int" value | |
958 const long badAddressVal = -2; // generic "bad address" value | |
959 const long badOopVal = -1; // generic "bad oop" value | |
960 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
961 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
962 const int badResourceValue = 0xAB; // value used to zap resource area | |
963 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
964 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
965 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
966 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
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967 const juint badMetaWordVal = 0xBAADFADE; // value used to zap metadata heap after GC |
0 | 968 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation |
969 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
970 | |
971 | |
972 // (These must be implemented as #defines because C++ compilers are | |
973 // not obligated to inline non-integral constants!) | |
974 #define badAddress ((address)::badAddressVal) | |
975 #define badOop ((oop)::badOopVal) | |
976 #define badHeapWord (::badHeapWordVal) | |
977 #define badJNIHandle ((oop)::badJNIHandleVal) | |
978 | |
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979 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
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980 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
0 | 981 |
982 //---------------------------------------------------------------------------------------------------- | |
983 // Utility functions for bitfield manipulations | |
984 | |
985 const intptr_t AllBits = ~0; // all bits set in a word | |
986 const intptr_t NoBits = 0; // no bits set in a word | |
987 const jlong NoLongBits = 0; // no bits set in a long | |
988 const intptr_t OneBit = 1; // only right_most bit set in a word | |
989 | |
990 // get a word with the n.th or the right-most or left-most n bits set | |
991 // (note: #define used only so that they can be used in enum constant definitions) | |
992 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
993 #define right_n_bits(n) (nth_bit(n) - 1) | |
994 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
995 | |
996 // bit-operations using a mask m | |
997 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
998 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
999 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
1000 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
1001 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
1002 | |
1003 // bit-operations using the n.th bit | |
1004 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
1005 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
1006 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
1007 | |
1008 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
1009 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
1010 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
1011 } | |
1012 | |
1013 | |
1014 //---------------------------------------------------------------------------------------------------- | |
1015 // Utility functions for integers | |
1016 | |
1017 // Avoid use of global min/max macros which may cause unwanted double | |
1018 // evaluation of arguments. | |
1019 #ifdef max | |
1020 #undef max | |
1021 #endif | |
1022 | |
1023 #ifdef min | |
1024 #undef min | |
1025 #endif | |
1026 | |
1027 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
1028 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
1029 | |
1030 // It is necessary to use templates here. Having normal overloaded | |
1031 // functions does not work because it is necessary to provide both 32- | |
1032 // and 64-bit overloaded functions, which does not work, and having | |
1033 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
1034 // will be even more error-prone than macros. | |
1035 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
1036 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
1037 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
1038 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
1039 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
1040 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
1041 | |
1042 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
1043 | |
1044 // true if x is a power of 2, false otherwise | |
1045 inline bool is_power_of_2(intptr_t x) { | |
1046 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
1047 } | |
1048 | |
1049 // long version of is_power_of_2 | |
1050 inline bool is_power_of_2_long(jlong x) { | |
1051 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
1052 } | |
1053 | |
1054 //* largest i such that 2^i <= x | |
1055 // A negative value of 'x' will return '31' | |
1056 inline int log2_intptr(intptr_t x) { | |
1057 int i = -1; | |
1058 uintptr_t p = 1; | |
1059 while (p != 0 && p <= (uintptr_t)x) { | |
1060 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1061 i++; p *= 2; | |
1062 } | |
1063 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1064 // (if p = 0 then overflow occurred and i = 31) |
0 | 1065 return i; |
1066 } | |
1067 | |
1068 //* largest i such that 2^i <= x | |
1069 // A negative value of 'x' will return '63' | |
1070 inline int log2_long(jlong x) { | |
1071 int i = -1; | |
1072 julong p = 1; | |
1073 while (p != 0 && p <= (julong)x) { | |
1074 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1075 i++; p *= 2; | |
1076 } | |
1077 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1078 // (if p = 0 then overflow occurred and i = 63) |
0 | 1079 return i; |
1080 } | |
1081 | |
1082 //* the argument must be exactly a power of 2 | |
1083 inline int exact_log2(intptr_t x) { | |
1084 #ifdef ASSERT | |
1085 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
1086 #endif | |
1087 return log2_intptr(x); | |
1088 } | |
1089 | |
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1090 //* the argument must be exactly a power of 2 |
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1091 inline int exact_log2_long(jlong x) { |
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1092 #ifdef ASSERT |
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1093 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
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1094 #endif |
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1095 return log2_long(x); |
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1096 } |
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1097 |
0 | 1098 |
1099 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
1100 inline intptr_t round_to(intptr_t x, uintx s) { | |
1101 #ifdef ASSERT | |
1102 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1103 #endif | |
1104 const uintx m = s - 1; | |
1105 return mask_bits(x + m, ~m); | |
1106 } | |
1107 | |
1108 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
1109 inline intptr_t round_down(intptr_t x, uintx s) { | |
1110 #ifdef ASSERT | |
1111 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1112 #endif | |
1113 const uintx m = s - 1; | |
1114 return mask_bits(x, ~m); | |
1115 } | |
1116 | |
1117 | |
1118 inline bool is_odd (intx x) { return x & 1; } | |
1119 inline bool is_even(intx x) { return !is_odd(x); } | |
1120 | |
1121 // "to" should be greater than "from." | |
1122 inline intx byte_size(void* from, void* to) { | |
1123 return (address)to - (address)from; | |
1124 } | |
1125 | |
1126 //---------------------------------------------------------------------------------------------------- | |
1127 // Avoid non-portable casts with these routines (DEPRECATED) | |
1128 | |
1129 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
1130 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
1131 | |
1132 // Given sequence of four bytes, build into a 32-bit word | |
1133 // following the conventions used in class files. | |
1134 // On the 386, this could be realized with a simple address cast. | |
1135 // | |
1136 | |
1137 // This routine takes eight bytes: | |
1138 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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1139 return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
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1140 | (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
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1141 | (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
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1142 | (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
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1143 | (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
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1144 | (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
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1145 | (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
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1146 | (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
0 | 1147 } |
1148 | |
1149 // This routine takes four bytes: | |
1150 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
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1151 return (( u4(c1) << 24 ) & 0xff000000) |
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1152 | (( u4(c2) << 16 ) & 0x00ff0000) |
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1153 | (( u4(c3) << 8 ) & 0x0000ff00) |
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1154 | (( u4(c4) << 0 ) & 0x000000ff); |
0 | 1155 } |
1156 | |
1157 // And this one works if the four bytes are contiguous in memory: | |
1158 inline u4 build_u4_from( u1* p ) { | |
1159 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1160 } | |
1161 | |
1162 // Ditto for two-byte ints: | |
1163 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
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1164 return u2((( u2(c1) << 8 ) & 0xff00) |
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1165 | (( u2(c2) << 0 ) & 0x00ff)); |
0 | 1166 } |
1167 | |
1168 // And this one works if the two bytes are contiguous in memory: | |
1169 inline u2 build_u2_from( u1* p ) { | |
1170 return build_u2_from( p[0], p[1] ); | |
1171 } | |
1172 | |
1173 // Ditto for floats: | |
1174 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1175 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1176 return *(jfloat*)&u; | |
1177 } | |
1178 | |
1179 inline jfloat build_float_from( u1* p ) { | |
1180 u4 u = build_u4_from( p ); | |
1181 return *(jfloat*)&u; | |
1182 } | |
1183 | |
1184 | |
1185 // now (64-bit) longs | |
1186 | |
1187 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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1188 return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
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1189 | (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
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1190 | (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
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1191 | (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
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1192 | (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
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1193 | (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
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1194 | (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
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1195 | (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
0 | 1196 } |
1197 | |
1198 inline jlong build_long_from( u1* p ) { | |
1199 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1200 } | |
1201 | |
1202 | |
1203 // Doubles, too! | |
1204 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1205 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1206 return *(jdouble*)&u; | |
1207 } | |
1208 | |
1209 inline jdouble build_double_from( u1* p ) { | |
1210 jlong u = build_long_from( p ); | |
1211 return *(jdouble*)&u; | |
1212 } | |
1213 | |
1214 | |
1215 // Portable routines to go the other way: | |
1216 | |
1217 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1218 c1 = u1(x >> 8); | |
1219 c2 = u1(x); | |
1220 } | |
1221 | |
1222 inline void explode_short_to( u2 x, u1* p ) { | |
1223 explode_short_to( x, p[0], p[1]); | |
1224 } | |
1225 | |
1226 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1227 c1 = u1(x >> 24); | |
1228 c2 = u1(x >> 16); | |
1229 c3 = u1(x >> 8); | |
1230 c4 = u1(x); | |
1231 } | |
1232 | |
1233 inline void explode_int_to( u4 x, u1* p ) { | |
1234 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1235 } | |
1236 | |
1237 | |
1238 // Pack and extract shorts to/from ints: | |
1239 | |
1240 inline int extract_low_short_from_int(jint x) { | |
1241 return x & 0xffff; | |
1242 } | |
1243 | |
1244 inline int extract_high_short_from_int(jint x) { | |
1245 return (x >> 16) & 0xffff; | |
1246 } | |
1247 | |
1248 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1249 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1250 } | |
1251 | |
1252 // Printf-style formatters for fixed- and variable-width types as pointers and | |
3960 | 1253 // integers. These are derived from the definitions in inttypes.h. If the platform |
1254 // doesn't provide appropriate definitions, they should be provided in | |
1255 // the compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
0 | 1256 |
2361 | 1257 #define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
2152 | 1258 |
0 | 1259 // Format 32-bit quantities. |
3960 | 1260 #define INT32_FORMAT "%" PRId32 |
1261 #define UINT32_FORMAT "%" PRIu32 | |
1262 #define INT32_FORMAT_W(width) "%" #width PRId32 | |
1263 #define UINT32_FORMAT_W(width) "%" #width PRIu32 | |
0 | 1264 |
3960 | 1265 #define PTR32_FORMAT "0x%08" PRIx32 |
0 | 1266 |
1267 // Format 64-bit quantities. | |
3960 | 1268 #define INT64_FORMAT "%" PRId64 |
1269 #define UINT64_FORMAT "%" PRIu64 | |
1270 #define INT64_FORMAT_W(width) "%" #width PRId64 | |
1271 #define UINT64_FORMAT_W(width) "%" #width PRIu64 | |
0 | 1272 |
3960 | 1273 #define PTR64_FORMAT "0x%016" PRIx64 |
0 | 1274 |
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1275 // Format jlong, if necessary |
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1276 #ifndef JLONG_FORMAT |
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1277 #define JLONG_FORMAT INT64_FORMAT |
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1278 #endif |
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1279 #ifndef JULONG_FORMAT |
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1280 #define JULONG_FORMAT UINT64_FORMAT |
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1281 #endif |
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1282 |
3960 | 1283 // Format pointers which change size between 32- and 64-bit. |
0 | 1284 #ifdef _LP64 |
3960 | 1285 #define INTPTR_FORMAT "0x%016" PRIxPTR |
1286 #define PTR_FORMAT "0x%016" PRIxPTR | |
0 | 1287 #else // !_LP64 |
3960 | 1288 #define INTPTR_FORMAT "0x%08" PRIxPTR |
1289 #define PTR_FORMAT "0x%08" PRIxPTR | |
0 | 1290 #endif // _LP64 |
1291 | |
3960 | 1292 #define SSIZE_FORMAT "%" PRIdPTR |
1293 #define SIZE_FORMAT "%" PRIuPTR | |
1294 #define SSIZE_FORMAT_W(width) "%" #width PRIdPTR | |
1295 #define SIZE_FORMAT_W(width) "%" #width PRIuPTR | |
1296 | |
1297 #define INTX_FORMAT "%" PRIdPTR | |
1298 #define UINTX_FORMAT "%" PRIuPTR | |
1299 #define INTX_FORMAT_W(width) "%" #width PRIdPTR | |
1300 #define UINTX_FORMAT_W(width) "%" #width PRIuPTR | |
1301 | |
0 | 1302 |
1303 // Enable zap-a-lot if in debug version. | |
1304 | |
1305 # ifdef ASSERT | |
1306 # ifdef COMPILER2 | |
1307 # define ENABLE_ZAP_DEAD_LOCALS | |
1308 #endif /* COMPILER2 */ | |
1309 # endif /* ASSERT */ | |
1310 | |
1311 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) | |
1972 | 1312 |
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1313 // Dereference vptr |
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1314 // All C++ compilers that we know of have the vtbl pointer in the first |
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1315 // word. If there are exceptions, this function needs to be made compiler |
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1316 // specific. |
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1317 static inline void* dereference_vptr(void* addr) { |
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1318 return *(void**)addr; |
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1319 } |
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1320 |
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1321 |
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1322 #ifndef PRODUCT |
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1323 |
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1324 // For unit testing only |
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1325 class GlobalDefinitions { |
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1326 public: |
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1327 static void test_globals(); |
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1328 }; |
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1329 |
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1330 #endif // PRODUCT |
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1331 |
1972 | 1332 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |