Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/globalDefinitions.hpp @ 4844:bf864f701a4a
7066129: GarbageCollectorMXBean#getLastGcInfo leaks native memory
Summary: Make GCStatInfo a resource object
Reviewed-by: phh, coleenp
author | dsamersoff |
---|---|
date | Wed, 25 Jan 2012 02:29:05 +0400 |
parents | 94ec88ca68e2 |
children | 33df1aeaebbf 3a22b77e755a |
rev | line source |
---|---|
0 | 1 /* |
2152 | 2 * Copyright (c) 1997, 2011, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1311
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1311
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1311
diff
changeset
|
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 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
81 const int oopSize = sizeof(char*); // Full-width oop |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
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 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
88 const int BytesPerOop = BytesPerWord; // Full-width oop |
0 | 89 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
90 extern int LogBytesPerHeapOop; // Oop within a java object |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
91 extern int LogBitsPerHeapOop; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
92 extern int BytesPerHeapOop; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
93 extern int BitsPerHeapOop; |
0 | 94 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
95 // Oop encoding heap max |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
96 extern uint64_t OopEncodingHeapMax; |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
97 |
0 | 98 const int BitsPerJavaInteger = 32; |
559
7628781568e1
6795362: 32bit server compiler leads to wrong results on solaris-x86
twisti
parents:
361
diff
changeset
|
99 const int BitsPerJavaLong = 64; |
0 | 100 const int BitsPerSize_t = size_tSize * BitsPerByte; |
101 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
102 // Size of a char[] needed to represent a jint as a string in decimal. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
103 const int jintAsStringSize = 12; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
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
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
123 private: |
0 | 124 char* i; |
361
a4f9ef0c0375
6743059: Error in spaceDecorator.cpp "optimized" build.
jmasa
parents:
269
diff
changeset
|
125 #ifndef PRODUCT |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
126 public: |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
127 char* value() { return i; } |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
128 #endif |
0 | 129 }; |
130 | |
131 // HeapWordSize must be 2^LogHeapWordSize. | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
132 const int HeapWordSize = sizeof(HeapWord); |
0 | 133 #ifdef _LP64 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
134 const int LogHeapWordSize = 3; |
0 | 135 #else |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
136 const int LogHeapWordSize = 2; |
0 | 137 #endif |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
138 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
139 const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize; |
0 | 140 |
141 // The larger HeapWordSize for 64bit requires larger heaps | |
142 // for the same application running in 64bit. See bug 4967770. | |
143 // The minimum alignment to a heap word size is done. Other | |
144 // parts of the memory system may required additional alignment | |
145 // and are responsible for those alignments. | |
146 #ifdef _LP64 | |
147 #define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) | |
148 #else | |
149 #define ScaleForWordSize(x) (x) | |
150 #endif | |
151 | |
152 // The minimum number of native machine words necessary to contain "byte_size" | |
153 // bytes. | |
154 inline size_t heap_word_size(size_t byte_size) { | |
155 return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; | |
156 } | |
157 | |
158 | |
159 const size_t K = 1024; | |
160 const size_t M = K*K; | |
161 const size_t G = M*K; | |
162 const size_t HWperKB = K / sizeof(HeapWord); | |
163 | |
1261 | 164 const size_t LOG_K = 10; |
165 const size_t LOG_M = 2 * LOG_K; | |
166 const size_t LOG_G = 2 * LOG_M; | |
167 | |
0 | 168 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint |
169 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
170 | |
171 // Constants for converting from a base unit to milli-base units. For | |
172 // example from seconds to milliseconds and microseconds | |
173 | |
174 const int MILLIUNITS = 1000; // milli units per base unit | |
175 const int MICROUNITS = 1000000; // micro units per base unit | |
176 const int NANOUNITS = 1000000000; // nano units per base unit | |
177 | |
4712
e7dead7e90af
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
johnc
parents:
4006
diff
changeset
|
178 const jlong NANOSECS_PER_SEC = CONST64(1000000000); |
e7dead7e90af
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
johnc
parents:
4006
diff
changeset
|
179 const jint NANOSECS_PER_MILLISEC = 1000000; |
e7dead7e90af
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
johnc
parents:
4006
diff
changeset
|
180 |
0 | 181 inline const char* proper_unit_for_byte_size(size_t s) { |
182 if (s >= 10*M) { | |
183 return "M"; | |
184 } else if (s >= 10*K) { | |
185 return "K"; | |
186 } else { | |
187 return "B"; | |
188 } | |
189 } | |
190 | |
191 inline size_t byte_size_in_proper_unit(size_t s) { | |
192 if (s >= 10*M) { | |
193 return s/M; | |
194 } else if (s >= 10*K) { | |
195 return s/K; | |
196 } else { | |
197 return s; | |
198 } | |
199 } | |
200 | |
201 | |
202 //---------------------------------------------------------------------------------------------------- | |
203 // VM type definitions | |
204 | |
205 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
206 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
207 | |
208 typedef intptr_t intx; | |
209 typedef uintptr_t uintx; | |
210 | |
211 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
212 const intx max_intx = (uintx)min_intx - 1; | |
213 const uintx max_uintx = (uintx)-1; | |
214 | |
215 // Table of values: | |
216 // sizeof intx 4 8 | |
217 // min_intx 0x80000000 0x8000000000000000 | |
218 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
219 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
220 | |
221 typedef unsigned int uint; NEEDS_CLEANUP | |
222 | |
223 | |
224 //---------------------------------------------------------------------------------------------------- | |
225 // Java type definitions | |
226 | |
227 // All kinds of 'plain' byte addresses | |
228 typedef signed char s_char; | |
229 typedef unsigned char u_char; | |
230 typedef u_char* address; | |
231 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
232 // except for some implementations of a C++ | |
233 // linkage pointer to function. Should never | |
234 // need one of those to be placed in this | |
235 // type anyway. | |
236 | |
237 // Utility functions to "portably" (?) bit twiddle pointers | |
238 // Where portable means keep ANSI C++ compilers quiet | |
239 | |
240 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
241 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
242 | |
243 // Utility functions to "portably" make cast to/from function pointers. | |
244 | |
245 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
246 inline address_word castable_address(address x) { return address_word(x) ; } | |
247 inline address_word castable_address(void* x) { return address_word(x) ; } | |
248 | |
249 // Pointer subtraction. | |
250 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
251 // the range we might need to find differences from one end of the heap | |
252 // to the other. | |
253 // A typical use might be: | |
254 // if (pointer_delta(end(), top()) >= size) { | |
255 // // enough room for an object of size | |
256 // ... | |
257 // and then additions like | |
258 // ... top() + size ... | |
259 // are safe because we know that top() is at least size below end(). | |
260 inline size_t pointer_delta(const void* left, | |
261 const void* right, | |
262 size_t element_size) { | |
263 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
264 } | |
265 // A version specialized for HeapWord*'s. | |
266 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
267 return pointer_delta(left, right, sizeof(HeapWord)); | |
268 } | |
269 | |
270 // | |
271 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
272 // directly without at best a warning. This macro accomplishes it silently | |
273 // In every case that is present at this point the value be cast is a pointer | |
274 // to a C linkage function. In somecase the type used for the cast reflects | |
275 // that linkage and a picky compiler would not complain. In other cases because | |
276 // there is no convenient place to place a typedef with extern C linkage (i.e | |
277 // a platform dependent header file) it doesn't. At this point no compiler seems | |
278 // picky enough to catch these instances (which are few). It is possible that | |
279 // using templates could fix these for all cases. This use of templates is likely | |
280 // so far from the middle of the road that it is likely to be problematic in | |
281 // many C++ compilers. | |
282 // | |
283 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
284 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
285 | |
286 // Unsigned byte types for os and stream.hpp | |
287 | |
288 // Unsigned one, two, four and eigth byte quantities used for describing | |
289 // the .class file format. See JVM book chapter 4. | |
290 | |
291 typedef jubyte u1; | |
292 typedef jushort u2; | |
293 typedef juint u4; | |
294 typedef julong u8; | |
295 | |
296 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
297 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
298 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
299 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
300 | |
4800
94ec88ca68e2
7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents:
4712
diff
changeset
|
301 typedef jbyte s1; |
94ec88ca68e2
7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents:
4712
diff
changeset
|
302 typedef jshort s2; |
94ec88ca68e2
7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents:
4712
diff
changeset
|
303 typedef jint s4; |
94ec88ca68e2
7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents:
4712
diff
changeset
|
304 typedef jlong s8; |
94ec88ca68e2
7115199: Add event tracing hooks and Java Flight Recorder infrastructure
phh
parents:
4712
diff
changeset
|
305 |
0 | 306 //---------------------------------------------------------------------------------------------------- |
307 // JVM spec restrictions | |
308 | |
309 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
310 | |
311 | |
312 //---------------------------------------------------------------------------------------------------- | |
313 // HotSwap - for JVMTI aka Class File Replacement and PopFrame | |
314 // | |
315 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
316 | |
317 #define HOTSWAP | |
318 | |
319 //---------------------------------------------------------------------------------------------------- | |
320 // Object alignment, in units of HeapWords. | |
321 // | |
322 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
323 // reference fields can be naturally aligned. | |
324 | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
325 extern int MinObjAlignment; |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
326 extern int MinObjAlignmentInBytes; |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
327 extern int MinObjAlignmentInBytesMask; |
0 | 328 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
329 extern int LogMinObjAlignment; |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
330 extern int LogMinObjAlignmentInBytes; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
331 |
0 | 332 // Machine dependent stuff |
333 | |
1972 | 334 #ifdef TARGET_ARCH_x86 |
335 # include "globalDefinitions_x86.hpp" | |
336 #endif | |
337 #ifdef TARGET_ARCH_sparc | |
338 # include "globalDefinitions_sparc.hpp" | |
339 #endif | |
340 #ifdef TARGET_ARCH_zero | |
341 # include "globalDefinitions_zero.hpp" | |
342 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2152
diff
changeset
|
343 #ifdef TARGET_ARCH_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2152
diff
changeset
|
344 # include "globalDefinitions_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2152
diff
changeset
|
345 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2152
diff
changeset
|
346 #ifdef TARGET_ARCH_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2152
diff
changeset
|
347 # include "globalDefinitions_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2152
diff
changeset
|
348 #endif |
1972 | 349 |
0 | 350 |
351 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
352 // Note: this value must be a power of 2 | |
353 | |
354 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
355 | |
356 // Signed variants of alignment helpers. There are two versions of each, a macro | |
357 // for use in places like enum definitions that require compile-time constant | |
358 // expressions and a function for all other places so as to get type checking. | |
359 | |
360 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
361 | |
362 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
363 return align_size_up_(size, alignment); | |
364 } | |
365 | |
366 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
367 | |
368 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
369 return align_size_down_(size, alignment); | |
370 } | |
371 | |
372 // Align objects by rounding up their size, in HeapWord units. | |
373 | |
374 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
375 | |
376 inline intptr_t align_object_size(intptr_t size) { | |
377 return align_size_up(size, MinObjAlignment); | |
378 } | |
379 | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
380 inline bool is_object_aligned(intptr_t addr) { |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
381 return addr == align_object_size(addr); |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
382 } |
0 | 383 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1311
diff
changeset
|
384 // Pad out certain offsets to jlong alignment, in HeapWord units. |
0 | 385 |
386 inline intptr_t align_object_offset(intptr_t offset) { | |
387 return align_size_up(offset, HeapWordsPerLong); | |
388 } | |
389 | |
1665 | 390 // The expected size in bytes of a cache line, used to pad data structures. |
391 #define DEFAULT_CACHE_LINE_SIZE 64 | |
392 | |
393 // Bytes needed to pad type to avoid cache-line sharing; alignment should be the | |
394 // expected cache line size (a power of two). The first addend avoids sharing | |
395 // when the start address is not a multiple of alignment; the second maintains | |
396 // alignment of starting addresses that happen to be a multiple. | |
397 #define PADDING_SIZE(type, alignment) \ | |
398 ((alignment) + align_size_up_(sizeof(type), alignment)) | |
399 | |
400 // Templates to create a subclass padded to avoid cache line sharing. These are | |
401 // effective only when applied to derived-most (leaf) classes. | |
402 | |
403 // When no args are passed to the base ctor. | |
404 template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
405 class Padded: public T { | |
406 private: | |
407 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
408 }; | |
409 | |
410 // When either 0 or 1 args may be passed to the base ctor. | |
411 template <class T, typename Arg1T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
412 class Padded01: public T { | |
413 public: | |
414 Padded01(): T() { } | |
415 Padded01(Arg1T arg1): T(arg1) { } | |
416 private: | |
417 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
418 }; | |
0 | 419 |
420 //---------------------------------------------------------------------------------------------------- | |
421 // Utility macros for compilers | |
422 // used to silence compiler warnings | |
423 | |
424 #define Unused_Variable(var) var | |
425 | |
426 | |
427 //---------------------------------------------------------------------------------------------------- | |
428 // Miscellaneous | |
429 | |
430 // 6302670 Eliminate Hotspot __fabsf dependency | |
431 // All fabs() callers should call this function instead, which will implicitly | |
432 // convert the operand to double, avoiding a dependency on __fabsf which | |
433 // doesn't exist in early versions of Solaris 8. | |
434 inline double fabsd(double value) { | |
435 return fabs(value); | |
436 } | |
437 | |
438 inline jint low (jlong value) { return jint(value); } | |
439 inline jint high(jlong value) { return jint(value >> 32); } | |
440 | |
441 // the fancy casts are a hopefully portable way | |
442 // to do unsigned 32 to 64 bit type conversion | |
443 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
444 *value |= (jlong)(julong)(juint)low; } | |
445 | |
446 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
447 *value |= (jlong)high << 32; } | |
448 | |
449 inline jlong jlong_from(jint h, jint l) { | |
450 jlong result = 0; // initialization to avoid warning | |
451 set_high(&result, h); | |
452 set_low(&result, l); | |
453 return result; | |
454 } | |
455 | |
456 union jlong_accessor { | |
457 jint words[2]; | |
458 jlong long_value; | |
459 }; | |
460 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
461 void basic_types_init(); // cannot define here; uses assert |
0 | 462 |
463 | |
464 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
465 enum BasicType { | |
466 T_BOOLEAN = 4, | |
467 T_CHAR = 5, | |
468 T_FLOAT = 6, | |
469 T_DOUBLE = 7, | |
470 T_BYTE = 8, | |
471 T_SHORT = 9, | |
472 T_INT = 10, | |
473 T_LONG = 11, | |
474 T_OBJECT = 12, | |
475 T_ARRAY = 13, | |
476 T_VOID = 14, | |
477 T_ADDRESS = 15, | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
478 T_NARROWOOP= 16, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
479 T_CONFLICT = 17, // for stack value type with conflicting contents |
0 | 480 T_ILLEGAL = 99 |
481 }; | |
482 | |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
483 inline bool is_java_primitive(BasicType t) { |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
484 return T_BOOLEAN <= t && t <= T_LONG; |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
485 } |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
486 |
710 | 487 inline bool is_subword_type(BasicType t) { |
488 // these guys are processed exactly like T_INT in calling sequences: | |
489 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
490 } | |
491 | |
492 inline bool is_signed_subword_type(BasicType t) { | |
493 return (t == T_BYTE || t == T_SHORT); | |
494 } | |
495 | |
0 | 496 // Convert a char from a classfile signature to a BasicType |
497 inline BasicType char2type(char c) { | |
498 switch( c ) { | |
499 case 'B': return T_BYTE; | |
500 case 'C': return T_CHAR; | |
501 case 'D': return T_DOUBLE; | |
502 case 'F': return T_FLOAT; | |
503 case 'I': return T_INT; | |
504 case 'J': return T_LONG; | |
505 case 'S': return T_SHORT; | |
506 case 'Z': return T_BOOLEAN; | |
507 case 'V': return T_VOID; | |
508 case 'L': return T_OBJECT; | |
509 case '[': return T_ARRAY; | |
510 } | |
511 return T_ILLEGAL; | |
512 } | |
513 | |
514 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
515 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
516 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
517 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
518 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
519 extern BasicType name2type(const char* name); | |
520 | |
521 // Auxilary math routines | |
522 // least common multiple | |
523 extern size_t lcm(size_t a, size_t b); | |
524 | |
525 | |
526 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
527 enum BasicTypeSize { | |
528 T_BOOLEAN_size = 1, | |
529 T_CHAR_size = 1, | |
530 T_FLOAT_size = 1, | |
531 T_DOUBLE_size = 2, | |
532 T_BYTE_size = 1, | |
533 T_SHORT_size = 1, | |
534 T_INT_size = 1, | |
535 T_LONG_size = 2, | |
536 T_OBJECT_size = 1, | |
537 T_ARRAY_size = 1, | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
538 T_NARROWOOP_size = 1, |
0 | 539 T_VOID_size = 0 |
540 }; | |
541 | |
542 | |
543 // maps a BasicType to its instance field storage type: | |
544 // all sub-word integral types are widened to T_INT | |
545 extern BasicType type2field[T_CONFLICT+1]; | |
546 extern BasicType type2wfield[T_CONFLICT+1]; | |
547 | |
548 | |
549 // size in bytes | |
550 enum ArrayElementSize { | |
551 T_BOOLEAN_aelem_bytes = 1, | |
552 T_CHAR_aelem_bytes = 2, | |
553 T_FLOAT_aelem_bytes = 4, | |
554 T_DOUBLE_aelem_bytes = 8, | |
555 T_BYTE_aelem_bytes = 1, | |
556 T_SHORT_aelem_bytes = 2, | |
557 T_INT_aelem_bytes = 4, | |
558 T_LONG_aelem_bytes = 8, | |
559 #ifdef _LP64 | |
560 T_OBJECT_aelem_bytes = 8, | |
561 T_ARRAY_aelem_bytes = 8, | |
562 #else | |
563 T_OBJECT_aelem_bytes = 4, | |
564 T_ARRAY_aelem_bytes = 4, | |
565 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
566 T_NARROWOOP_aelem_bytes = 4, |
0 | 567 T_VOID_aelem_bytes = 0 |
568 }; | |
569 | |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
570 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
571 #ifdef ASSERT |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
572 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
573 #else |
1763 | 574 inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
575 #endif |
0 | 576 |
577 | |
578 // JavaValue serves as a container for arbitrary Java values. | |
579 | |
580 class JavaValue { | |
581 | |
582 public: | |
583 typedef union JavaCallValue { | |
584 jfloat f; | |
585 jdouble d; | |
586 jint i; | |
587 jlong l; | |
588 jobject h; | |
589 } JavaCallValue; | |
590 | |
591 private: | |
592 BasicType _type; | |
593 JavaCallValue _value; | |
594 | |
595 public: | |
596 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
597 | |
598 JavaValue(jfloat value) { | |
599 _type = T_FLOAT; | |
600 _value.f = value; | |
601 } | |
602 | |
603 JavaValue(jdouble value) { | |
604 _type = T_DOUBLE; | |
605 _value.d = value; | |
606 } | |
607 | |
608 jfloat get_jfloat() const { return _value.f; } | |
609 jdouble get_jdouble() const { return _value.d; } | |
610 jint get_jint() const { return _value.i; } | |
611 jlong get_jlong() const { return _value.l; } | |
612 jobject get_jobject() const { return _value.h; } | |
613 JavaCallValue* get_value_addr() { return &_value; } | |
614 BasicType get_type() const { return _type; } | |
615 | |
616 void set_jfloat(jfloat f) { _value.f = f;} | |
617 void set_jdouble(jdouble d) { _value.d = d;} | |
618 void set_jint(jint i) { _value.i = i;} | |
619 void set_jlong(jlong l) { _value.l = l;} | |
620 void set_jobject(jobject h) { _value.h = h;} | |
621 void set_type(BasicType t) { _type = t; } | |
622 | |
623 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
624 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
625 jchar get_jchar() const { return (jchar) (_value.i);} | |
626 jshort get_jshort() const { return (jshort) (_value.i);} | |
627 | |
628 }; | |
629 | |
630 | |
631 #define STACK_BIAS 0 | |
632 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
633 // in order to extend the reach of the stack pointer. | |
634 #if defined(SPARC) && defined(_LP64) | |
635 #undef STACK_BIAS | |
636 #define STACK_BIAS 0x7ff | |
637 #endif | |
638 | |
639 | |
640 // TosState describes the top-of-stack state before and after the execution of | |
641 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
642 // registers. The TosState corresponds to the 'machine represention' of this cached | |
643 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
644 // as well as a 5th state in case the top-of-stack value is actually on the top | |
645 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
646 // state when it comes to machine representation but is used separately for (oop) | |
647 // type specific operations (e.g. verification code). | |
648 | |
649 enum TosState { // describes the tos cache contents | |
650 btos = 0, // byte, bool tos cached | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
651 ctos = 1, // char tos cached |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
652 stos = 2, // short tos cached |
0 | 653 itos = 3, // int tos cached |
654 ltos = 4, // long tos cached | |
655 ftos = 5, // float tos cached | |
656 dtos = 6, // double tos cached | |
657 atos = 7, // object cached | |
658 vtos = 8, // tos not cached | |
659 number_of_states, | |
660 ilgl // illegal state: should not occur | |
661 }; | |
662 | |
663 | |
664 inline TosState as_TosState(BasicType type) { | |
665 switch (type) { | |
666 case T_BYTE : return btos; | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
667 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 668 case T_CHAR : return ctos; |
669 case T_SHORT : return stos; | |
670 case T_INT : return itos; | |
671 case T_LONG : return ltos; | |
672 case T_FLOAT : return ftos; | |
673 case T_DOUBLE : return dtos; | |
674 case T_VOID : return vtos; | |
675 case T_ARRAY : // fall through | |
676 case T_OBJECT : return atos; | |
677 } | |
678 return ilgl; | |
679 } | |
680 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
681 inline BasicType as_BasicType(TosState state) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
682 switch (state) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
683 //case ztos: return T_BOOLEAN;//FIXME |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
684 case btos : return T_BYTE; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
685 case ctos : return T_CHAR; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
686 case stos : return T_SHORT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
687 case itos : return T_INT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
688 case ltos : return T_LONG; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
689 case ftos : return T_FLOAT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
690 case dtos : return T_DOUBLE; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
691 case atos : return T_OBJECT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
692 case vtos : return T_VOID; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
693 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
694 return T_ILLEGAL; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
695 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
696 |
0 | 697 |
698 // Helper function to convert BasicType info into TosState | |
699 // Note: Cannot define here as it uses global constant at the time being. | |
700 TosState as_TosState(BasicType type); | |
701 | |
702 | |
703 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
704 | |
705 enum ReferenceType { | |
706 REF_NONE, // Regular class | |
707 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
708 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
709 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
710 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
711 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
712 }; | |
713 | |
714 | |
715 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
716 // information is needed by the safepoint code. | |
717 // | |
718 // There are 4 essential states: | |
719 // | |
720 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
721 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
722 // _thread_in_vm : Executing in the vm | |
723 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
724 // | |
725 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
726 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
727 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
728 // | |
729 // Given a state, the xxx_trans state can always be found by adding 1. | |
730 // | |
731 enum JavaThreadState { | |
732 _thread_uninitialized = 0, // should never happen (missing initialization) | |
733 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
734 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
735 _thread_in_native = 4, // running in native code | |
736 _thread_in_native_trans = 5, // corresponding transition state | |
737 _thread_in_vm = 6, // running in VM | |
738 _thread_in_vm_trans = 7, // corresponding transition state | |
739 _thread_in_Java = 8, // running in Java or in stub code | |
740 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
741 _thread_blocked = 10, // blocked in vm | |
742 _thread_blocked_trans = 11, // corresponding transition state | |
743 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
744 }; | |
745 | |
746 | |
747 // Handy constants for deciding which compiler mode to use. | |
748 enum MethodCompilation { | |
749 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
750 InvalidOSREntryBci = -2 | |
751 }; | |
752 | |
753 // Enumeration to distinguish tiers of compilation | |
754 enum CompLevel { | |
1783 | 755 CompLevel_any = -1, |
756 CompLevel_all = -1, | |
757 CompLevel_none = 0, // Interpreter | |
758 CompLevel_simple = 1, // C1 | |
759 CompLevel_limited_profile = 2, // C1, invocation & backedge counters | |
760 CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo | |
2447 | 761 CompLevel_full_optimization = 4, // C2 or Shark |
0 | 762 |
2447 | 763 #if defined(COMPILER2) || defined(SHARK) |
1783 | 764 CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
765 #elif defined(COMPILER1) | |
766 CompLevel_highest_tier = CompLevel_simple, // pure C1 | |
0 | 767 #else |
1783 | 768 CompLevel_highest_tier = CompLevel_none, |
769 #endif | |
770 | |
771 #if defined(TIERED) | |
772 CompLevel_initial_compile = CompLevel_full_profile // tiered | |
773 #elif defined(COMPILER1) | |
774 CompLevel_initial_compile = CompLevel_simple // pure C1 | |
2447 | 775 #elif defined(COMPILER2) || defined(SHARK) |
1783 | 776 CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
777 #else | |
778 CompLevel_initial_compile = CompLevel_none | |
779 #endif | |
0 | 780 }; |
781 | |
1783 | 782 inline bool is_c1_compile(int comp_level) { |
783 return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; | |
0 | 784 } |
1783 | 785 |
786 inline bool is_c2_compile(int comp_level) { | |
0 | 787 return comp_level == CompLevel_full_optimization; |
788 } | |
1783 | 789 |
0 | 790 inline bool is_highest_tier_compile(int comp_level) { |
791 return comp_level == CompLevel_highest_tier; | |
792 } | |
793 | |
794 //---------------------------------------------------------------------------------------------------- | |
795 // 'Forward' declarations of frequently used classes | |
796 // (in order to reduce interface dependencies & reduce | |
797 // number of unnecessary compilations after changes) | |
798 | |
799 class symbolTable; | |
800 class ClassFileStream; | |
801 | |
802 class Event; | |
803 | |
804 class Thread; | |
805 class VMThread; | |
806 class JavaThread; | |
807 class Threads; | |
808 | |
809 class VM_Operation; | |
810 class VMOperationQueue; | |
811 | |
812 class CodeBlob; | |
813 class nmethod; | |
814 class OSRAdapter; | |
815 class I2CAdapter; | |
816 class C2IAdapter; | |
817 class CompiledIC; | |
818 class relocInfo; | |
819 class ScopeDesc; | |
820 class PcDesc; | |
821 | |
822 class Recompiler; | |
823 class Recompilee; | |
824 class RecompilationPolicy; | |
825 class RFrame; | |
826 class CompiledRFrame; | |
827 class InterpretedRFrame; | |
828 | |
829 class frame; | |
830 | |
831 class vframe; | |
832 class javaVFrame; | |
833 class interpretedVFrame; | |
834 class compiledVFrame; | |
835 class deoptimizedVFrame; | |
836 class externalVFrame; | |
837 class entryVFrame; | |
838 | |
839 class RegisterMap; | |
840 | |
841 class Mutex; | |
842 class Monitor; | |
843 class BasicLock; | |
844 class BasicObjectLock; | |
845 | |
846 class PeriodicTask; | |
847 | |
848 class JavaCallWrapper; | |
849 | |
850 class oopDesc; | |
851 | |
852 class NativeCall; | |
853 | |
854 class zone; | |
855 | |
856 class StubQueue; | |
857 | |
858 class outputStream; | |
859 | |
860 class ResourceArea; | |
861 | |
862 class DebugInformationRecorder; | |
863 class ScopeValue; | |
864 class CompressedStream; | |
865 class DebugInfoReadStream; | |
866 class DebugInfoWriteStream; | |
867 class LocationValue; | |
868 class ConstantValue; | |
869 class IllegalValue; | |
870 | |
871 class PrivilegedElement; | |
872 class MonitorArray; | |
873 | |
874 class MonitorInfo; | |
875 | |
876 class OffsetClosure; | |
877 class OopMapCache; | |
878 class InterpreterOopMap; | |
879 class OopMapCacheEntry; | |
880 class OSThread; | |
881 | |
882 typedef int (*OSThreadStartFunc)(void*); | |
883 | |
884 class Space; | |
885 | |
886 class JavaValue; | |
887 class methodHandle; | |
888 class JavaCallArguments; | |
889 | |
890 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
891 | |
892 extern void basic_fatal(const char* msg); | |
893 | |
894 | |
895 //---------------------------------------------------------------------------------------------------- | |
896 // Special constants for debugging | |
897 | |
898 const jint badInt = -3; // generic "bad int" value | |
899 const long badAddressVal = -2; // generic "bad address" value | |
900 const long badOopVal = -1; // generic "bad oop" value | |
901 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
902 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
903 const int badResourceValue = 0xAB; // value used to zap resource area | |
904 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
905 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
906 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
907 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
908 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation | |
909 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
910 | |
911 | |
912 // (These must be implemented as #defines because C++ compilers are | |
913 // not obligated to inline non-integral constants!) | |
914 #define badAddress ((address)::badAddressVal) | |
915 #define badOop ((oop)::badOopVal) | |
916 #define badHeapWord (::badHeapWordVal) | |
917 #define badJNIHandle ((oop)::badJNIHandleVal) | |
918 | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1261
diff
changeset
|
919 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1261
diff
changeset
|
920 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
0 | 921 |
922 //---------------------------------------------------------------------------------------------------- | |
923 // Utility functions for bitfield manipulations | |
924 | |
925 const intptr_t AllBits = ~0; // all bits set in a word | |
926 const intptr_t NoBits = 0; // no bits set in a word | |
927 const jlong NoLongBits = 0; // no bits set in a long | |
928 const intptr_t OneBit = 1; // only right_most bit set in a word | |
929 | |
930 // get a word with the n.th or the right-most or left-most n bits set | |
931 // (note: #define used only so that they can be used in enum constant definitions) | |
932 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
933 #define right_n_bits(n) (nth_bit(n) - 1) | |
934 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
935 | |
936 // bit-operations using a mask m | |
937 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
938 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
939 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
940 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
941 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
942 | |
943 // bit-operations using the n.th bit | |
944 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
945 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
946 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
947 | |
948 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
949 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
950 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
951 } | |
952 | |
953 | |
954 //---------------------------------------------------------------------------------------------------- | |
955 // Utility functions for integers | |
956 | |
957 // Avoid use of global min/max macros which may cause unwanted double | |
958 // evaluation of arguments. | |
959 #ifdef max | |
960 #undef max | |
961 #endif | |
962 | |
963 #ifdef min | |
964 #undef min | |
965 #endif | |
966 | |
967 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
968 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
969 | |
970 // It is necessary to use templates here. Having normal overloaded | |
971 // functions does not work because it is necessary to provide both 32- | |
972 // and 64-bit overloaded functions, which does not work, and having | |
973 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
974 // will be even more error-prone than macros. | |
975 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
976 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
977 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
978 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
979 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
980 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
981 | |
982 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
983 | |
984 // true if x is a power of 2, false otherwise | |
985 inline bool is_power_of_2(intptr_t x) { | |
986 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
987 } | |
988 | |
989 // long version of is_power_of_2 | |
990 inline bool is_power_of_2_long(jlong x) { | |
991 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
992 } | |
993 | |
994 //* largest i such that 2^i <= x | |
995 // A negative value of 'x' will return '31' | |
996 inline int log2_intptr(intptr_t x) { | |
997 int i = -1; | |
998 uintptr_t p = 1; | |
999 while (p != 0 && p <= (uintptr_t)x) { | |
1000 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1001 i++; p *= 2; | |
1002 } | |
1003 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1004 // (if p = 0 then overflow occurred and i = 31) |
0 | 1005 return i; |
1006 } | |
1007 | |
1008 //* largest i such that 2^i <= x | |
1009 // A negative value of 'x' will return '63' | |
1010 inline int log2_long(jlong x) { | |
1011 int i = -1; | |
1012 julong p = 1; | |
1013 while (p != 0 && p <= (julong)x) { | |
1014 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1015 i++; p *= 2; | |
1016 } | |
1017 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1018 // (if p = 0 then overflow occurred and i = 63) |
0 | 1019 return i; |
1020 } | |
1021 | |
1022 //* the argument must be exactly a power of 2 | |
1023 inline int exact_log2(intptr_t x) { | |
1024 #ifdef ASSERT | |
1025 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
1026 #endif | |
1027 return log2_intptr(x); | |
1028 } | |
1029 | |
568
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1030 //* the argument must be exactly a power of 2 |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1031 inline int exact_log2_long(jlong x) { |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1032 #ifdef ASSERT |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1033 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1034 #endif |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1035 return log2_long(x); |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1036 } |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
1037 |
0 | 1038 |
1039 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
1040 inline intptr_t round_to(intptr_t x, uintx s) { | |
1041 #ifdef ASSERT | |
1042 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1043 #endif | |
1044 const uintx m = s - 1; | |
1045 return mask_bits(x + m, ~m); | |
1046 } | |
1047 | |
1048 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
1049 inline intptr_t round_down(intptr_t x, uintx s) { | |
1050 #ifdef ASSERT | |
1051 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1052 #endif | |
1053 const uintx m = s - 1; | |
1054 return mask_bits(x, ~m); | |
1055 } | |
1056 | |
1057 | |
1058 inline bool is_odd (intx x) { return x & 1; } | |
1059 inline bool is_even(intx x) { return !is_odd(x); } | |
1060 | |
1061 // "to" should be greater than "from." | |
1062 inline intx byte_size(void* from, void* to) { | |
1063 return (address)to - (address)from; | |
1064 } | |
1065 | |
1066 //---------------------------------------------------------------------------------------------------- | |
1067 // Avoid non-portable casts with these routines (DEPRECATED) | |
1068 | |
1069 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
1070 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
1071 | |
1072 // Given sequence of four bytes, build into a 32-bit word | |
1073 // following the conventions used in class files. | |
1074 // On the 386, this could be realized with a simple address cast. | |
1075 // | |
1076 | |
1077 // This routine takes eight bytes: | |
1078 inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1789
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1079 return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1080 | (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1081 | (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1082 | (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1083 | (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1084 | (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1085 | (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1086 | (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
0 | 1087 } |
1088 | |
1089 // This routine takes four bytes: | |
1090 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1789
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1091 return (( u4(c1) << 24 ) & 0xff000000) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1092 | (( u4(c2) << 16 ) & 0x00ff0000) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1093 | (( u4(c3) << 8 ) & 0x0000ff00) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1094 | (( u4(c4) << 0 ) & 0x000000ff); |
0 | 1095 } |
1096 | |
1097 // And this one works if the four bytes are contiguous in memory: | |
1098 inline u4 build_u4_from( u1* p ) { | |
1099 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1100 } | |
1101 | |
1102 // Ditto for two-byte ints: | |
1103 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
1789
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1104 return u2((( u2(c1) << 8 ) & 0xff00) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1105 | (( u2(c2) << 0 ) & 0x00ff)); |
0 | 1106 } |
1107 | |
1108 // And this one works if the two bytes are contiguous in memory: | |
1109 inline u2 build_u2_from( u1* p ) { | |
1110 return build_u2_from( p[0], p[1] ); | |
1111 } | |
1112 | |
1113 // Ditto for floats: | |
1114 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1115 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1116 return *(jfloat*)&u; | |
1117 } | |
1118 | |
1119 inline jfloat build_float_from( u1* p ) { | |
1120 u4 u = build_u4_from( p ); | |
1121 return *(jfloat*)&u; | |
1122 } | |
1123 | |
1124 | |
1125 // now (64-bit) longs | |
1126 | |
1127 inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1789
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1128 return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1129 | (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1130 | (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1131 | (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1132 | (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1133 | (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1134 | (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
a83b0246bb77
6934483: GCC 4.5 errors "suggest parentheses around something..." when compiling with -Werror and -Wall
twisti
parents:
1783
diff
changeset
|
1135 | (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
0 | 1136 } |
1137 | |
1138 inline jlong build_long_from( u1* p ) { | |
1139 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1140 } | |
1141 | |
1142 | |
1143 // Doubles, too! | |
1144 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1145 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1146 return *(jdouble*)&u; | |
1147 } | |
1148 | |
1149 inline jdouble build_double_from( u1* p ) { | |
1150 jlong u = build_long_from( p ); | |
1151 return *(jdouble*)&u; | |
1152 } | |
1153 | |
1154 | |
1155 // Portable routines to go the other way: | |
1156 | |
1157 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1158 c1 = u1(x >> 8); | |
1159 c2 = u1(x); | |
1160 } | |
1161 | |
1162 inline void explode_short_to( u2 x, u1* p ) { | |
1163 explode_short_to( x, p[0], p[1]); | |
1164 } | |
1165 | |
1166 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1167 c1 = u1(x >> 24); | |
1168 c2 = u1(x >> 16); | |
1169 c3 = u1(x >> 8); | |
1170 c4 = u1(x); | |
1171 } | |
1172 | |
1173 inline void explode_int_to( u4 x, u1* p ) { | |
1174 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1175 } | |
1176 | |
1177 | |
1178 // Pack and extract shorts to/from ints: | |
1179 | |
1180 inline int extract_low_short_from_int(jint x) { | |
1181 return x & 0xffff; | |
1182 } | |
1183 | |
1184 inline int extract_high_short_from_int(jint x) { | |
1185 return (x >> 16) & 0xffff; | |
1186 } | |
1187 | |
1188 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1189 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1190 } | |
1191 | |
1192 // Printf-style formatters for fixed- and variable-width types as pointers and | |
3960 | 1193 // integers. These are derived from the definitions in inttypes.h. If the platform |
1194 // doesn't provide appropriate definitions, they should be provided in | |
1195 // the compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
0 | 1196 |
2361 | 1197 #define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
2152 | 1198 |
0 | 1199 // Format 32-bit quantities. |
3960 | 1200 #define INT32_FORMAT "%" PRId32 |
1201 #define UINT32_FORMAT "%" PRIu32 | |
1202 #define INT32_FORMAT_W(width) "%" #width PRId32 | |
1203 #define UINT32_FORMAT_W(width) "%" #width PRIu32 | |
0 | 1204 |
3960 | 1205 #define PTR32_FORMAT "0x%08" PRIx32 |
0 | 1206 |
1207 // Format 64-bit quantities. | |
3960 | 1208 #define INT64_FORMAT "%" PRId64 |
1209 #define UINT64_FORMAT "%" PRIu64 | |
1210 #define INT64_FORMAT_W(width) "%" #width PRId64 | |
1211 #define UINT64_FORMAT_W(width) "%" #width PRIu64 | |
0 | 1212 |
3960 | 1213 #define PTR64_FORMAT "0x%016" PRIx64 |
0 | 1214 |
3960 | 1215 // Format pointers which change size between 32- and 64-bit. |
0 | 1216 #ifdef _LP64 |
3960 | 1217 #define INTPTR_FORMAT "0x%016" PRIxPTR |
1218 #define PTR_FORMAT "0x%016" PRIxPTR | |
0 | 1219 #else // !_LP64 |
3960 | 1220 #define INTPTR_FORMAT "0x%08" PRIxPTR |
1221 #define PTR_FORMAT "0x%08" PRIxPTR | |
0 | 1222 #endif // _LP64 |
1223 | |
3960 | 1224 #define SSIZE_FORMAT "%" PRIdPTR |
1225 #define SIZE_FORMAT "%" PRIuPTR | |
1226 #define SSIZE_FORMAT_W(width) "%" #width PRIdPTR | |
1227 #define SIZE_FORMAT_W(width) "%" #width PRIuPTR | |
1228 | |
1229 #define INTX_FORMAT "%" PRIdPTR | |
1230 #define UINTX_FORMAT "%" PRIuPTR | |
1231 #define INTX_FORMAT_W(width) "%" #width PRIdPTR | |
1232 #define UINTX_FORMAT_W(width) "%" #width PRIuPTR | |
1233 | |
0 | 1234 |
1235 // Enable zap-a-lot if in debug version. | |
1236 | |
1237 # ifdef ASSERT | |
1238 # ifdef COMPILER2 | |
1239 # define ENABLE_ZAP_DEAD_LOCALS | |
1240 #endif /* COMPILER2 */ | |
1241 # endif /* ASSERT */ | |
1242 | |
1243 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) | |
1972 | 1244 |
1245 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |