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comparison src/share/vm/runtime/stubRoutines.hpp @ 2324:0ac769a57c64

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6627983: G1: Bad oop deference during marking Summary: Bulk zeroing reduction didn't work with G1, because arraycopy would call pre-barriers on uninitialized oops. The solution is to have version of arraycopy stubs that don't have pre-barriers. Also refactored arraycopy stubs generation on SPARC to be more readable and reduced the number of stubs necessary in some cases. Reviewed-by: jrose, kvn, never
author iveresov
date Tue, 01 Mar 2011 14:56:48 -0800
parents b92c45f2bc75
children 13bc79b5c9c8
comparison
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2323:bc6b27fb3568 2324:0ac769a57c64
1 /* 1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
162 // arraycopy operands aligned on element type boundary 162 // arraycopy operands aligned on element type boundary
163 static address _jbyte_arraycopy; 163 static address _jbyte_arraycopy;
164 static address _jshort_arraycopy; 164 static address _jshort_arraycopy;
165 static address _jint_arraycopy; 165 static address _jint_arraycopy;
166 static address _jlong_arraycopy; 166 static address _jlong_arraycopy;
167 static address _oop_arraycopy; 167 static address _oop_arraycopy, _oop_arraycopy_uninit;
168 static address _jbyte_disjoint_arraycopy; 168 static address _jbyte_disjoint_arraycopy;
169 static address _jshort_disjoint_arraycopy; 169 static address _jshort_disjoint_arraycopy;
170 static address _jint_disjoint_arraycopy; 170 static address _jint_disjoint_arraycopy;
171 static address _jlong_disjoint_arraycopy; 171 static address _jlong_disjoint_arraycopy;
172 static address _oop_disjoint_arraycopy; 172 static address _oop_disjoint_arraycopy, _oop_disjoint_arraycopy_uninit;
173 173
174 // arraycopy operands aligned on zero'th element boundary 174 // arraycopy operands aligned on zero'th element boundary
175 // These are identical to the ones aligned aligned on an 175 // These are identical to the ones aligned aligned on an
176 // element type boundary, except that they assume that both 176 // element type boundary, except that they assume that both
177 // source and destination are HeapWord aligned. 177 // source and destination are HeapWord aligned.
178 static address _arrayof_jbyte_arraycopy; 178 static address _arrayof_jbyte_arraycopy;
179 static address _arrayof_jshort_arraycopy; 179 static address _arrayof_jshort_arraycopy;
180 static address _arrayof_jint_arraycopy; 180 static address _arrayof_jint_arraycopy;
181 static address _arrayof_jlong_arraycopy; 181 static address _arrayof_jlong_arraycopy;
182 static address _arrayof_oop_arraycopy; 182 static address _arrayof_oop_arraycopy, _arrayof_oop_arraycopy_uninit;
183 static address _arrayof_jbyte_disjoint_arraycopy; 183 static address _arrayof_jbyte_disjoint_arraycopy;
184 static address _arrayof_jshort_disjoint_arraycopy; 184 static address _arrayof_jshort_disjoint_arraycopy;
185 static address _arrayof_jint_disjoint_arraycopy; 185 static address _arrayof_jint_disjoint_arraycopy;
186 static address _arrayof_jlong_disjoint_arraycopy; 186 static address _arrayof_jlong_disjoint_arraycopy;
187 static address _arrayof_oop_disjoint_arraycopy; 187 static address _arrayof_oop_disjoint_arraycopy, _arrayof_oop_disjoint_arraycopy_uninit;
188 188
189 // these are recommended but optional: 189 // these are recommended but optional:
190 static address _checkcast_arraycopy; 190 static address _checkcast_arraycopy, _checkcast_arraycopy_uninit;
191 static address _unsafe_arraycopy; 191 static address _unsafe_arraycopy;
192 static address _generic_arraycopy; 192 static address _generic_arraycopy;
193 193
194 static address _jbyte_fill; 194 static address _jbyte_fill;
195 static address _jshort_fill; 195 static address _jshort_fill;
284 284
285 static address jbyte_arraycopy() { return _jbyte_arraycopy; } 285 static address jbyte_arraycopy() { return _jbyte_arraycopy; }
286 static address jshort_arraycopy() { return _jshort_arraycopy; } 286 static address jshort_arraycopy() { return _jshort_arraycopy; }
287 static address jint_arraycopy() { return _jint_arraycopy; } 287 static address jint_arraycopy() { return _jint_arraycopy; }
288 static address jlong_arraycopy() { return _jlong_arraycopy; } 288 static address jlong_arraycopy() { return _jlong_arraycopy; }
289 static address oop_arraycopy() { return _oop_arraycopy; } 289 static address oop_arraycopy(bool dest_uninitialized = false) {
290 return dest_uninitialized ? _oop_arraycopy_uninit : _oop_arraycopy;
291 }
290 static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; } 292 static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; }
291 static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; } 293 static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; }
292 static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; } 294 static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; }
293 static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; } 295 static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; }
294 static address oop_disjoint_arraycopy() { return _oop_disjoint_arraycopy; } 296 static address oop_disjoint_arraycopy(bool dest_uninitialized = false) {
297 return dest_uninitialized ? _oop_disjoint_arraycopy_uninit : _oop_disjoint_arraycopy;
298 }
295 299
296 static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; } 300 static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; }
297 static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; } 301 static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; }
298 static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; } 302 static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; }
299 static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; } 303 static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; }
300 static address arrayof_oop_arraycopy() { return _arrayof_oop_arraycopy; } 304 static address arrayof_oop_arraycopy(bool dest_uninitialized = false) {
305 return dest_uninitialized ? _arrayof_oop_arraycopy_uninit : _arrayof_oop_arraycopy;
306 }
301 307
302 static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; } 308 static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; }
303 static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; } 309 static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; }
304 static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; } 310 static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; }
305 static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; } 311 static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; }
306 static address arrayof_oop_disjoint_arraycopy() { return _arrayof_oop_disjoint_arraycopy; } 312 static address arrayof_oop_disjoint_arraycopy(bool dest_uninitialized = false) {
307 313 return dest_uninitialized ? _arrayof_oop_disjoint_arraycopy_uninit : _arrayof_oop_disjoint_arraycopy;
308 static address checkcast_arraycopy() { return _checkcast_arraycopy; } 314 }
315
316 static address checkcast_arraycopy(bool dest_uninitialized = false) {
317 return dest_uninitialized ? _checkcast_arraycopy_uninit : _checkcast_arraycopy;
318 }
309 static address unsafe_arraycopy() { return _unsafe_arraycopy; } 319 static address unsafe_arraycopy() { return _unsafe_arraycopy; }
310 static address generic_arraycopy() { return _generic_arraycopy; } 320 static address generic_arraycopy() { return _generic_arraycopy; }
311 321
312 static address jbyte_fill() { return _jbyte_fill; } 322 static address jbyte_fill() { return _jbyte_fill; }
313 static address jshort_fill() { return _jshort_fill; } 323 static address jshort_fill() { return _jshort_fill; }
350 360
351 // 361 //
352 // Default versions of the above arraycopy functions for platforms which do 362 // Default versions of the above arraycopy functions for platforms which do
353 // not have specialized versions 363 // not have specialized versions
354 // 364 //
355 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count); 365 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);
356 static void jshort_copy(jshort* src, jshort* dest, size_t count); 366 static void jshort_copy (jshort* src, jshort* dest, size_t count);
357 static void jint_copy (jint* src, jint* dest, size_t count); 367 static void jint_copy (jint* src, jint* dest, size_t count);
358 static void jlong_copy (jlong* src, jlong* dest, size_t count); 368 static void jlong_copy (jlong* src, jlong* dest, size_t count);
359 static void oop_copy (oop* src, oop* dest, size_t count); 369 static void oop_copy (oop* src, oop* dest, size_t count);
360 370 static void oop_copy_uninit(oop* src, oop* dest, size_t count);
361 static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count); 371
362 static void arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count); 372 static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count);
363 static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count); 373 static void arrayof_jshort_copy (HeapWord* src, HeapWord* dest, size_t count);
364 static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count); 374 static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count);
365 static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count); 375 static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count);
376 static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count);
377 static void arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count);
366 }; 378 };
367 379
368 #endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP 380 #endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP