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comparison src/share/vm/c1/c1_Instruction.cpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents 7a302948f5a4
children 37c18711a0df
comparison
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1999, 2012, 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.
394 intx Constant::hash() const { 394 intx Constant::hash() const {
395 if (state_before() == NULL) { 395 if (state_before() == NULL) {
396 switch (type()->tag()) { 396 switch (type()->tag()) {
397 case intTag: 397 case intTag:
398 return HASH2(name(), type()->as_IntConstant()->value()); 398 return HASH2(name(), type()->as_IntConstant()->value());
399 case addressTag:
400 return HASH2(name(), type()->as_AddressConstant()->value());
399 case longTag: 401 case longTag:
400 { 402 {
401 jlong temp = type()->as_LongConstant()->value(); 403 jlong temp = type()->as_LongConstant()->value();
402 return HASH3(name(), high(temp), low(temp)); 404 return HASH3(name(), high(temp), low(temp));
403 } 405 }
409 return HASH3(name(), high(temp), low(temp)); 411 return HASH3(name(), high(temp), low(temp));
410 } 412 }
411 case objectTag: 413 case objectTag:
412 assert(type()->as_ObjectType()->is_loaded(), "can't handle unloaded values"); 414 assert(type()->as_ObjectType()->is_loaded(), "can't handle unloaded values");
413 return HASH2(name(), type()->as_ObjectType()->constant_value()); 415 return HASH2(name(), type()->as_ObjectType()->constant_value());
416 case metaDataTag:
417 assert(type()->as_MetadataType()->is_loaded(), "can't handle unloaded values");
418 return HASH2(name(), type()->as_MetadataType()->constant_value());
419 default:
420 ShouldNotReachHere();
414 } 421 }
415 } 422 }
416 return 0; 423 return 0;
417 } 424 }
418 425
450 } 457 }
451 case objectTag: 458 case objectTag:
452 { 459 {
453 ObjectType* t1 = type()->as_ObjectType(); 460 ObjectType* t1 = type()->as_ObjectType();
454 ObjectType* t2 = v->type()->as_ObjectType(); 461 ObjectType* t2 = v->type()->as_ObjectType();
462 return (t1 != NULL && t2 != NULL &&
463 t1->is_loaded() && t2->is_loaded() &&
464 t1->constant_value() == t2->constant_value());
465 }
466 case metaDataTag:
467 {
468 MetadataType* t1 = type()->as_MetadataType();
469 MetadataType* t2 = v->type()->as_MetadataType();
455 return (t1 != NULL && t2 != NULL && 470 return (t1 != NULL && t2 != NULL &&
456 t1->is_loaded() && t2->is_loaded() && 471 t1->is_loaded() && t2->is_loaded() &&
457 t1->constant_value() == t2->constant_value()); 472 t1->constant_value() == t2->constant_value());
458 } 473 }
459 } 474 }
506 case If::neq: return xvalue != yvalue ? cond_true : cond_false; 521 case If::neq: return xvalue != yvalue ? cond_true : cond_false;
507 } 522 }
508 } 523 }
509 break; 524 break;
510 } 525 }
526 case metaDataTag: {
527 ciMetadata* xvalue = lt->as_MetadataType()->constant_value();
528 ciMetadata* yvalue = rt->as_MetadataType()->constant_value();
529 assert(xvalue != NULL && yvalue != NULL, "not constants");
530 if (xvalue->is_loaded() && yvalue->is_loaded()) {
531 switch (cond) {
532 case If::eql: return xvalue == yvalue ? cond_true : cond_false;
533 case If::neq: return xvalue != yvalue ? cond_true : cond_false;
534 }
535 }
536 break;
537 }
511 } 538 }
512 return not_comparable; 539 return not_comparable;
513 } 540 }
514 541
515 542