1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_UTILITIES_MACROS_HPP 26 #define SHARE_VM_UTILITIES_MACROS_HPP 27 28 // Use this to mark code that needs to be cleaned up (for development only) 29 #define NEEDS_CLEANUP 30 31 // Makes a string of the argument (which is not macro-expanded) 32 #define STR(a) #a 33 34 // Makes a string of the macro expansion of a 35 #define XSTR(a) STR(a) 36 37 // Allow commas in macro arguments. 38 #define COMMA , 39 40 // Apply pre-processor token pasting to the expansions of x and y. 41 // The token pasting operator (##) prevents its arguments from being 42 // expanded. This macro allows expansion of its arguments before the 43 // concatenation is performed. Note: One auxilliary level ought to be 44 // sufficient, but two are used because of bugs in some preprocesors. 45 #define PASTE_TOKENS(x, y) PASTE_TOKENS_AUX(x, y) 46 #define PASTE_TOKENS_AUX(x, y) PASTE_TOKENS_AUX2(x, y) 47 #define PASTE_TOKENS_AUX2(x, y) x ## y 48 49 // -DINCLUDE_<something>=0 | 1 can be specified on the command line to include 50 // or exclude functionality. 51 52 #ifndef INCLUDE_JVMTI 53 #define INCLUDE_JVMTI 1 54 #endif // INCLUDE_JVMTI 55 56 #if INCLUDE_JVMTI 57 #define JVMTI_ONLY(x) x 58 #define NOT_JVMTI(x) 59 #define NOT_JVMTI_RETURN 60 #define NOT_JVMTI_RETURN_(code) /* next token must be ; */ 61 #else 62 #define JVMTI_ONLY(x) 63 #define NOT_JVMTI(x) x 64 #define NOT_JVMTI_RETURN { return; } 65 #define NOT_JVMTI_RETURN_(code) { return code; } 66 #endif // INCLUDE_JVMTI 67 68 #ifndef INCLUDE_VM_STRUCTS 69 #define INCLUDE_VM_STRUCTS 1 70 #endif 71 72 #if INCLUDE_VM_STRUCTS 73 #define NOT_VM_STRUCTS_RETURN /* next token must be ; */ 74 #define NOT_VM_STRUCTS_RETURN_(code) /* next token must be ; */ 75 #else 76 #define NOT_VM_STRUCTS_RETURN {} 77 #define NOT_VM_STRUCTS_RETURN_(code) { return code; } 78 #endif // INCLUDE_VM_STRUCTS 79 80 #ifndef INCLUDE_JNI_CHECK 81 #define INCLUDE_JNI_CHECK 1 82 #endif 83 84 #if INCLUDE_JNI_CHECK 85 #define NOT_JNI_CHECK_RETURN /* next token must be ; */ 86 #define NOT_JNI_CHECK_RETURN_(code) /* next token must be ; */ 87 #else 88 #define NOT_JNI_CHECK_RETURN {} 89 #define NOT_JNI_CHECK_RETURN_(code) { return code; } 90 #endif // INCLUDE_JNI_CHECK 91 92 #ifndef INCLUDE_SERVICES 93 #define INCLUDE_SERVICES 1 94 #endif 95 96 #if INCLUDE_SERVICES 97 #define NOT_SERVICES_RETURN /* next token must be ; */ 98 #define NOT_SERVICES_RETURN_(code) /* next token must be ; */ 99 #else 100 #define NOT_SERVICES_RETURN {} 101 #define NOT_SERVICES_RETURN_(code) { return code; } 102 #endif // INCLUDE_SERVICES 103 104 #ifndef INCLUDE_CDS 105 #define INCLUDE_CDS 1 106 #endif 107 108 #if INCLUDE_CDS 109 #define CDS_ONLY(x) x 110 #define NOT_CDS(x) 111 #define NOT_CDS_RETURN /* next token must be ; */ 112 #define NOT_CDS_RETURN0 /* next token must be ; */ 113 #define NOT_CDS_RETURN_(code) /* next token must be ; */ 114 #else 115 #define CDS_ONLY(x) 116 #define NOT_CDS(x) x 117 #define NOT_CDS_RETURN {} 118 #define NOT_CDS_RETURN0 { return 0; } 119 #define NOT_CDS_RETURN_(code) { return code; } 120 #endif // INCLUDE_CDS 121 122 #ifndef INCLUDE_MANAGEMENT 123 #define INCLUDE_MANAGEMENT 1 124 #endif // INCLUDE_MANAGEMENT 125 126 #if INCLUDE_MANAGEMENT 127 #define NOT_MANAGEMENT_RETURN /* next token must be ; */ 128 #define NOT_MANAGEMENT_RETURN_(code) /* next token must be ; */ 129 #else 130 #define NOT_MANAGEMENT_RETURN {} 131 #define NOT_MANAGEMENT_RETURN_(code) { return code; } 132 #endif // INCLUDE_MANAGEMENT 133 134 #ifndef INCLUDE_CMSGC 135 #define INCLUDE_CMSGC 1 136 #endif // INCLUDE_CMSGC 137 138 #if INCLUDE_CMSGC 139 #define CMSGC_ONLY(x) x 140 #define CMSGC_ONLY_ARG(arg) arg, 141 #define NOT_CMSGC(x) 142 #define NOT_CMSGC_RETURN /* next token must be ; */ 143 #define NOT_CMSGC_RETURN_(code) /* next token must be ; */ 144 #else 145 #define CMSGC_ONLY(x) 146 #define CMSGC_ONLY_ARG(x) 147 #define NOT_CMSGC(x) x 148 #define NOT_CMSGC_RETURN {} 149 #define NOT_CMSGC_RETURN_(code) { return code; } 150 #endif // INCLUDE_CMSGC 151 152 #ifndef INCLUDE_EPSILONGC 153 #define INCLUDE_EPSILONGC 1 154 #endif // INCLUDE_EPSILONGC 155 156 #if INCLUDE_EPSILONGC 157 #define EPSILONGC_ONLY(x) x 158 #define EPSILONGC_ONLY_ARG(arg) arg, 159 #define NOT_EPSILONGC(x) 160 #define NOT_EPSILONGC_RETURN /* next token must be ; */ 161 #define NOT_EPSILONGC_RETURN_(code) /* next token must be ; */ 162 #else 163 #define EPSILONGC_ONLY(x) 164 #define EPSILONGC_ONLY_ARG(arg) 165 #define NOT_EPSILONGC(x) x 166 #define NOT_EPSILONGC_RETURN {} 167 #define NOT_EPSILONGC_RETURN_(code) { return code; } 168 #endif // INCLUDE_EPSILONGC 169 170 #ifndef INCLUDE_G1GC 171 #define INCLUDE_G1GC 1 172 #endif // INCLUDE_G1GC 173 174 #if INCLUDE_G1GC 175 #define G1GC_ONLY(x) x 176 #define G1GC_ONLY_ARG(arg) arg, 177 #define NOT_G1GC(x) 178 #define NOT_G1GC_RETURN /* next token must be ; */ 179 #define NOT_G1GC_RETURN_(code) /* next token must be ; */ 180 #else 181 #define G1GC_ONLY(x) 182 #define G1GC_ONLY_ARG(arg) 183 #define NOT_G1GC(x) x 184 #define NOT_G1GC_RETURN {} 185 #define NOT_G1GC_RETURN_(code) { return code; } 186 #endif // INCLUDE_G1GC 187 188 #ifndef INCLUDE_PARALLELGC 189 #define INCLUDE_PARALLELGC 1 190 #endif // INCLUDE_PARALLELGC 191 192 #if INCLUDE_PARALLELGC 193 #define PARALLELGC_ONLY(x) x 194 #define PARALLELGC_ONLY_ARG(arg) arg, 195 #define NOT_PARALLELGC(x) 196 #define NOT_PARALLELGC_RETURN /* next token must be ; */ 197 #define NOT_PARALLELGC_RETURN_(code) /* next token must be ; */ 198 #else 199 #define PARALLELGC_ONLY(x) 200 #define PARALLELGC_ONLY_ARG(arg) 201 #define NOT_PARALLELGC(x) x 202 #define NOT_PARALLELGC_RETURN {} 203 #define NOT_PARALLELGC_RETURN_(code) { return code; } 204 #endif // INCLUDE_PARALLELGC 205 206 #ifndef INCLUDE_SERIALGC 207 #define INCLUDE_SERIALGC 1 208 #endif // INCLUDE_SERIALGC 209 210 #if INCLUDE_SERIALGC 211 #define SERIALGC_ONLY(x) x 212 #define SERIALGC_ONLY_ARG(arg) arg, 213 #define NOT_SERIALGC(x) 214 #define NOT_SERIALGC_RETURN /* next token must be ; */ 215 #define NOT_SERIALGC_RETURN_(code) /* next token must be ; */ 216 #else 217 #define SERIALGC_ONLY(x) 218 #define SERIALGC_ONLY_ARG(arg) 219 #define NOT_SERIALGC(x) x 220 #define NOT_SERIALGC_RETURN {} 221 #define NOT_SERIALGC_RETURN_(code) { return code; } 222 #endif // INCLUDE_SERIALGC 223 224 #if INCLUDE_CMSGC || INCLUDE_EPSILONGC || INCLUDE_G1GC || INCLUDE_PARALLELGC 225 #define INCLUDE_NOT_ONLY_SERIALGC 1 226 #else 227 #define INCLUDE_NOT_ONLY_SERIALGC 0 228 #endif 229 230 #define INCLUDE_OOP_OOP_ITERATE_BACKWARDS INCLUDE_NOT_ONLY_SERIALGC 231 232 #ifndef INCLUDE_NMT 233 #define INCLUDE_NMT 1 234 #endif // INCLUDE_NMT 235 236 #if INCLUDE_NMT 237 #define NOT_NMT_RETURN /* next token must be ; */ 238 #define NOT_NMT_RETURN_(code) /* next token must be ; */ 239 #define NMT_ONLY(x) x 240 #define NOT_NMT(x) 241 #else 242 #define NOT_NMT_RETURN {} 243 #define NOT_NMT_RETURN_(code) { return code; } 244 #define NMT_ONLY(x) 245 #define NOT_NMT(x) x 246 #endif // INCLUDE_NMT 247 248 #ifndef INCLUDE_JFR 249 #define INCLUDE_JFR 1 250 #endif 251 252 #if INCLUDE_JFR 253 #define JFR_ONLY(code) code 254 #else 255 #define JFR_ONLY(code) 256 #endif 257 258 #ifndef INCLUDE_JVMCI 259 #define INCLUDE_JVMCI 1 260 #endif 261 262 #ifndef INCLUDE_AOT 263 #define INCLUDE_AOT 1 264 #endif 265 266 #if INCLUDE_AOT && !INCLUDE_JVMCI 267 # error "Must have JVMCI for AOT" 268 #endif 269 270 #if INCLUDE_JVMCI 271 #define JVMCI_ONLY(code) code 272 #define NOT_JVMCI(code) 273 #define NOT_JVMCI_RETURN /* next token must be ; */ 274 #else 275 #define JVMCI_ONLY(code) 276 #define NOT_JVMCI(code) code 277 #define NOT_JVMCI_RETURN {} 278 #endif // INCLUDE_JVMCI 279 280 #if INCLUDE_AOT 281 #define AOT_ONLY(code) code 282 #define NOT_AOT(code) 283 #define NOT_AOT_RETURN /* next token must be ; */ 284 #else 285 #define AOT_ONLY(code) 286 #define NOT_AOT(code) code 287 #define NOT_AOT_RETURN {} 288 #endif // INCLUDE_AOT 289 290 // COMPILER1 variant 291 #ifdef COMPILER1 292 #ifdef COMPILER2 293 #define TIERED 294 #endif 295 #define COMPILER1_PRESENT(code) code 296 #define NOT_COMPILER1(code) 297 #else // COMPILER1 298 #define COMPILER1_PRESENT(code) 299 #define NOT_COMPILER1(code) code 300 #endif // COMPILER1 301 302 // COMPILER2 variant 303 #ifdef COMPILER2 304 #define COMPILER2_PRESENT(code) code 305 #define NOT_COMPILER2(code) 306 #else // COMPILER2 307 #define COMPILER2_PRESENT(code) 308 #define NOT_COMPILER2(code) code 309 #endif // COMPILER2 310 311 // COMPILER2 or JVMCI 312 #if defined(COMPILER2) || INCLUDE_JVMCI 313 #define COMPILER2_OR_JVMCI 1 314 #define COMPILER2_OR_JVMCI_PRESENT(code) code 315 #define NOT_COMPILER2_OR_JVMCI(code) 316 #else 317 #define COMPILER2_OR_JVMCI 0 318 #define COMPILER2_OR_JVMCI_PRESENT(code) 319 #define NOT_COMPILER2_OR_JVMCI(code) code 320 #endif 321 322 #ifdef TIERED 323 #define TIERED_ONLY(code) code 324 #define NOT_TIERED(code) 325 #else // TIERED 326 #define TIERED_ONLY(code) 327 #define NOT_TIERED(code) code 328 #endif // TIERED 329 330 331 // PRODUCT variant 332 #ifdef PRODUCT 333 #define PRODUCT_ONLY(code) code 334 #define NOT_PRODUCT(code) 335 #define NOT_PRODUCT_ARG(arg) 336 #define PRODUCT_RETURN {} 337 #define PRODUCT_RETURN0 { return 0; } 338 #define PRODUCT_RETURN_(code) { code } 339 #else // PRODUCT 340 #define PRODUCT_ONLY(code) 341 #define NOT_PRODUCT(code) code 342 #define NOT_PRODUCT_ARG(arg) arg, 343 #define PRODUCT_RETURN /*next token must be ;*/ 344 #define PRODUCT_RETURN0 /*next token must be ;*/ 345 #define PRODUCT_RETURN_(code) /*next token must be ;*/ 346 #endif // PRODUCT 347 348 #ifdef CHECK_UNHANDLED_OOPS 349 #define CHECK_UNHANDLED_OOPS_ONLY(code) code 350 #define NOT_CHECK_UNHANDLED_OOPS(code) 351 #else 352 #define CHECK_UNHANDLED_OOPS_ONLY(code) 353 #define NOT_CHECK_UNHANDLED_OOPS(code) code 354 #endif // CHECK_UNHANDLED_OOPS 355 356 #ifdef CC_INTERP 357 #define CC_INTERP_ONLY(code) code 358 #define NOT_CC_INTERP(code) 359 #else 360 #define CC_INTERP_ONLY(code) 361 #define NOT_CC_INTERP(code) code 362 #endif // CC_INTERP 363 364 #ifdef ASSERT 365 #define DEBUG_ONLY(code) code 366 #define NOT_DEBUG(code) 367 #define NOT_DEBUG_RETURN /*next token must be ;*/ 368 // Historical. 369 #define debug_only(code) code 370 #else // ASSERT 371 #define DEBUG_ONLY(code) 372 #define NOT_DEBUG(code) code 373 #define NOT_DEBUG_RETURN {} 374 #define debug_only(code) 375 #endif // ASSERT 376 377 #ifdef _LP64 378 #define LP64_ONLY(code) code 379 #define NOT_LP64(code) 380 #else // !_LP64 381 #define LP64_ONLY(code) 382 #define NOT_LP64(code) code 383 #endif // _LP64 384 385 #ifdef LINUX 386 #define LINUX_ONLY(code) code 387 #define NOT_LINUX(code) 388 #else 389 #define LINUX_ONLY(code) 390 #define NOT_LINUX(code) code 391 #endif 392 393 #ifdef AIX 394 #define AIX_ONLY(code) code 395 #define NOT_AIX(code) 396 #else 397 #define AIX_ONLY(code) 398 #define NOT_AIX(code) code 399 #endif 400 401 #ifdef SOLARIS 402 #define SOLARIS_ONLY(code) code 403 #define NOT_SOLARIS(code) 404 #else 405 #define SOLARIS_ONLY(code) 406 #define NOT_SOLARIS(code) code 407 #endif 408 409 #ifdef _WINDOWS 410 #define WINDOWS_ONLY(code) code 411 #define NOT_WINDOWS(code) 412 #else 413 #define WINDOWS_ONLY(code) 414 #define NOT_WINDOWS(code) code 415 #endif 416 417 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__) 418 #ifndef BSD 419 #define BSD 420 #endif // BSD defined in <sys/param.h> 421 #define BSD_ONLY(code) code 422 #define NOT_BSD(code) 423 #else 424 #define BSD_ONLY(code) 425 #define NOT_BSD(code) code 426 #endif 427 428 #ifdef _WIN64 429 #define WIN64_ONLY(code) code 430 #define NOT_WIN64(code) 431 #else 432 #define WIN64_ONLY(code) 433 #define NOT_WIN64(code) code 434 #endif 435 436 #if defined(ZERO) 437 #define ZERO_ONLY(code) code 438 #define NOT_ZERO(code) 439 #else 440 #define ZERO_ONLY(code) 441 #define NOT_ZERO(code) code 442 #endif 443 444 #if defined(IA32) || defined(AMD64) 445 #define X86 446 #define X86_ONLY(code) code 447 #define NOT_X86(code) 448 #else 449 #undef X86 450 #define X86_ONLY(code) 451 #define NOT_X86(code) code 452 #endif 453 454 #ifdef IA32 455 #define IA32_ONLY(code) code 456 #define NOT_IA32(code) 457 #else 458 #define IA32_ONLY(code) 459 #define NOT_IA32(code) code 460 #endif 461 462 // This is a REALLY BIG HACK, but on AIX <sys/systemcfg.h> unconditionally defines IA64. 463 // At least on AIX 7.1 this is a real problem because 'systemcfg.h' is indirectly included 464 // by 'pthread.h' and other common system headers. 465 466 #if defined(IA64) && !defined(AIX) 467 #define IA64_ONLY(code) code 468 #define NOT_IA64(code) 469 #else 470 #define IA64_ONLY(code) 471 #define NOT_IA64(code) code 472 #endif 473 474 #ifdef AMD64 475 #define AMD64_ONLY(code) code 476 #define NOT_AMD64(code) 477 #else 478 #define AMD64_ONLY(code) 479 #define NOT_AMD64(code) code 480 #endif 481 482 #ifdef S390 483 #define S390_ONLY(code) code 484 #define NOT_S390(code) 485 #else 486 #define S390_ONLY(code) 487 #define NOT_S390(code) code 488 #endif 489 490 #ifdef SPARC 491 #define SPARC_ONLY(code) code 492 #define NOT_SPARC(code) 493 #else 494 #define SPARC_ONLY(code) 495 #define NOT_SPARC(code) code 496 #endif 497 498 #if defined(PPC32) || defined(PPC64) 499 #ifndef PPC 500 #define PPC 501 #endif 502 #define PPC_ONLY(code) code 503 #define NOT_PPC(code) 504 #else 505 #undef PPC 506 #define PPC_ONLY(code) 507 #define NOT_PPC(code) code 508 #endif 509 510 #ifdef PPC32 511 #define PPC32_ONLY(code) code 512 #define NOT_PPC32(code) 513 #else 514 #define PPC32_ONLY(code) 515 #define NOT_PPC32(code) code 516 #endif 517 518 #ifdef PPC64 519 #define PPC64_ONLY(code) code 520 #define NOT_PPC64(code) 521 #else 522 #define PPC64_ONLY(code) 523 #define NOT_PPC64(code) code 524 #endif 525 526 #ifdef E500V2 527 #define E500V2_ONLY(code) code 528 #define NOT_E500V2(code) 529 #else 530 #define E500V2_ONLY(code) 531 #define NOT_E500V2(code) code 532 #endif 533 534 // Note: There are three ARM ports. They set the following in the makefiles: 535 // 1. Closed 32-bit port: -DARM -DARM32 -DTARGET_ARCH_arm 536 // 2. Closed 64-bit port: -DARM -DAARCH64 -D_LP64 -DTARGET_ARCH_arm 537 // 3. Open 64-bit port: -DAARCH64 -D_LP64 -DTARGET_ARCH_aaarch64 538 #ifdef ARM 539 #define ARM_ONLY(code) code 540 #define NOT_ARM(code) 541 #else 542 #define ARM_ONLY(code) 543 #define NOT_ARM(code) code 544 #endif 545 546 #ifdef ARM32 547 #define ARM32_ONLY(code) code 548 #define NOT_ARM32(code) 549 #else 550 #define ARM32_ONLY(code) 551 #define NOT_ARM32(code) code 552 #endif 553 554 #ifdef AARCH64 555 #define AARCH64_ONLY(code) code 556 #define NOT_AARCH64(code) 557 #else 558 #define AARCH64_ONLY(code) 559 #define NOT_AARCH64(code) code 560 #endif 561 562 #define define_pd_global(type, name, value) const type pd_##name = value; 563 564 // Helper macros for constructing file names for includes. 565 #define CPU_HEADER_STEM(basename) PASTE_TOKENS(basename, INCLUDE_SUFFIX_CPU) 566 #define OS_HEADER_STEM(basename) PASTE_TOKENS(basename, INCLUDE_SUFFIX_OS) 567 #define OS_CPU_HEADER_STEM(basename) PASTE_TOKENS(basename, PASTE_TOKENS(INCLUDE_SUFFIX_OS, INCLUDE_SUFFIX_CPU)) 568 #define COMPILER_HEADER_STEM(basename) PASTE_TOKENS(basename, INCLUDE_SUFFIX_COMPILER) 569 570 // Include platform dependent files. 571 // 572 // This macro constructs from basename and INCLUDE_SUFFIX_OS / 573 // INCLUDE_SUFFIX_CPU / INCLUDE_SUFFIX_COMPILER, which are set on 574 // the command line, the name of platform dependent files to be included. 575 // Example: INCLUDE_SUFFIX_OS=_linux / INCLUDE_SUFFIX_CPU=_sparc 576 // CPU_HEADER_INLINE(macroAssembler) --> macroAssembler_sparc.inline.hpp 577 // OS_CPU_HEADER(vmStructs) --> vmStructs_linux_sparc.hpp 578 // 579 // basename<cpu>.hpp / basename<cpu>.inline.hpp 580 #define CPU_HEADER_H(basename) XSTR(CPU_HEADER_STEM(basename).h) 581 #define CPU_HEADER(basename) XSTR(CPU_HEADER_STEM(basename).hpp) 582 #define CPU_HEADER_INLINE(basename) XSTR(CPU_HEADER_STEM(basename).inline.hpp) 583 // basename<os>.hpp / basename<os>.inline.hpp 584 #define OS_HEADER_H(basename) XSTR(OS_HEADER_STEM(basename).h) 585 #define OS_HEADER(basename) XSTR(OS_HEADER_STEM(basename).hpp) 586 #define OS_HEADER_INLINE(basename) XSTR(OS_HEADER_STEM(basename).inline.hpp) 587 // basename<os><cpu>.hpp / basename<os><cpu>.inline.hpp 588 #define OS_CPU_HEADER(basename) XSTR(OS_CPU_HEADER_STEM(basename).hpp) 589 #define OS_CPU_HEADER_INLINE(basename) XSTR(OS_CPU_HEADER_STEM(basename).inline.hpp) 590 // basename<compiler>.hpp / basename<compiler>.inline.hpp 591 #define COMPILER_HEADER(basename) XSTR(COMPILER_HEADER_STEM(basename).hpp) 592 #define COMPILER_HEADER_INLINE(basename) XSTR(COMPILER_HEADER_STEM(basename).inline.hpp) 593 594 // To use Atomic::inc(jshort* dest) and Atomic::dec(jshort* dest), the address must be specially 595 // aligned, such that (*dest) occupies the upper 16 bits of an aligned 32-bit word. The best way to 596 // achieve is to place your short value next to another short value, which doesn't need atomic ops. 597 // 598 // Example 599 // ATOMIC_SHORT_PAIR( 600 // volatile short _refcount, // needs atomic operation 601 // unsigned short _length // number of UTF8 characters in the symbol (does not need atomic op) 602 // ); 603 604 #ifdef VM_LITTLE_ENDIAN 605 #define ATOMIC_SHORT_PAIR(atomic_decl, non_atomic_decl) \ 606 non_atomic_decl; \ 607 atomic_decl 608 #else 609 #define ATOMIC_SHORT_PAIR(atomic_decl, non_atomic_decl) \ 610 atomic_decl; \ 611 non_atomic_decl 612 #endif 613 614 #if INCLUDE_CDS && INCLUDE_G1GC && defined(_LP64) && !defined(_WINDOWS) 615 #define INCLUDE_CDS_JAVA_HEAP 1 616 #define CDS_JAVA_HEAP_ONLY(x) x 617 #define NOT_CDS_JAVA_HEAP(x) 618 #define NOT_CDS_JAVA_HEAP_RETURN 619 #define NOT_CDS_JAVA_HEAP_RETURN_(code) 620 #else 621 #define INCLUDE_CDS_JAVA_HEAP 0 622 #define CDS_JAVA_HEAP_ONLY(x) 623 #define NOT_CDS_JAVA_HEAP(x) x 624 #define NOT_CDS_JAVA_HEAP_RETURN {} 625 #define NOT_CDS_JAVA_HEAP_RETURN_(code) { return code; } 626 #endif 627 628 #endif // SHARE_VM_UTILITIES_MACROS_HPP