1 /* 2 * kmp_os.h -- KPTS runtime header file. 3 */ 4 5 //===----------------------------------------------------------------------===// 6 // 7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 8 // See https://llvm.org/LICENSE.txt for license information. 9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef KMP_OS_H 14 #define KMP_OS_H 15 16 #include "kmp_config.h" 17 #include <atomic> 18 #include <stdarg.h> 19 #include <stdlib.h> 20 #include <string.h> 21 22 #define KMP_FTN_PLAIN 1 23 #define KMP_FTN_APPEND 2 24 #define KMP_FTN_UPPER 3 25 /* 26 #define KMP_FTN_PREPEND 4 27 #define KMP_FTN_UAPPEND 5 28 */ 29 30 #define KMP_PTR_SKIP (sizeof(void *)) 31 32 /* -------------------------- Compiler variations ------------------------ */ 33 34 #define KMP_OFF 0 35 #define KMP_ON 1 36 37 #define KMP_MEM_CONS_VOLATILE 0 38 #define KMP_MEM_CONS_FENCE 1 39 40 #ifndef KMP_MEM_CONS_MODEL 41 #define KMP_MEM_CONS_MODEL KMP_MEM_CONS_VOLATILE 42 #endif 43 44 #ifndef __has_cpp_attribute 45 #define __has_cpp_attribute(x) 0 46 #endif 47 48 #ifndef __has_attribute 49 #define __has_attribute(x) 0 50 #endif 51 52 /* ------------------------- Compiler recognition ---------------------- */ 53 #define KMP_COMPILER_ICC 0 54 #define KMP_COMPILER_GCC 0 55 #define KMP_COMPILER_CLANG 0 56 #define KMP_COMPILER_MSVC 0 57 #define KMP_COMPILER_ICX 0 58 59 #if __INTEL_CLANG_COMPILER 60 #undef KMP_COMPILER_ICX 61 #define KMP_COMPILER_ICX 1 62 #elif defined(__INTEL_COMPILER) 63 #undef KMP_COMPILER_ICC 64 #define KMP_COMPILER_ICC 1 65 #elif defined(__clang__) 66 #undef KMP_COMPILER_CLANG 67 #define KMP_COMPILER_CLANG 1 68 #elif defined(__GNUC__) 69 #undef KMP_COMPILER_GCC 70 #define KMP_COMPILER_GCC 1 71 #elif defined(_MSC_VER) 72 #undef KMP_COMPILER_MSVC 73 #define KMP_COMPILER_MSVC 1 74 #else 75 #error Unknown compiler 76 #endif 77 78 #if (KMP_OS_LINUX || KMP_OS_WINDOWS || KMP_OS_FREEBSD) 79 #define KMP_AFFINITY_SUPPORTED 1 80 #if KMP_OS_WINDOWS && KMP_ARCH_X86_64 81 #define KMP_GROUP_AFFINITY 1 82 #else 83 #define KMP_GROUP_AFFINITY 0 84 #endif 85 #else 86 #define KMP_AFFINITY_SUPPORTED 0 87 #define KMP_GROUP_AFFINITY 0 88 #endif 89 90 #if (KMP_OS_LINUX || (KMP_OS_FREEBSD && __FreeBSD_version >= 1301000)) 91 #define KMP_HAVE_SCHED_GETCPU 1 92 #else 93 #define KMP_HAVE_SCHED_GETCPU 0 94 #endif 95 96 /* Check for quad-precision extension. */ 97 #define KMP_HAVE_QUAD 0 98 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 99 #if KMP_COMPILER_ICC || KMP_COMPILER_ICX 100 /* _Quad is already defined for icc */ 101 #undef KMP_HAVE_QUAD 102 #define KMP_HAVE_QUAD 1 103 #elif KMP_COMPILER_CLANG 104 /* Clang doesn't support a software-implemented 105 128-bit extended precision type yet */ 106 typedef long double _Quad; 107 #elif KMP_COMPILER_GCC 108 /* GCC on NetBSD lacks __multc3/__divtc3 builtins needed for quad */ 109 #if !KMP_OS_NETBSD 110 typedef __float128 _Quad; 111 #undef KMP_HAVE_QUAD 112 #define KMP_HAVE_QUAD 1 113 #endif 114 #elif KMP_COMPILER_MSVC 115 typedef long double _Quad; 116 #endif 117 #else 118 #if __LDBL_MAX_EXP__ >= 16384 && KMP_COMPILER_GCC 119 typedef long double _Quad; 120 #undef KMP_HAVE_QUAD 121 #define KMP_HAVE_QUAD 1 122 #endif 123 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ 124 125 #define KMP_USE_X87CONTROL 0 126 #if KMP_OS_WINDOWS 127 #define KMP_END_OF_LINE "\r\n" 128 typedef char kmp_int8; 129 typedef unsigned char kmp_uint8; 130 typedef short kmp_int16; 131 typedef unsigned short kmp_uint16; 132 typedef int kmp_int32; 133 typedef unsigned int kmp_uint32; 134 #define KMP_INT32_SPEC "d" 135 #define KMP_UINT32_SPEC "u" 136 #ifndef KMP_STRUCT64 137 typedef __int64 kmp_int64; 138 typedef unsigned __int64 kmp_uint64; 139 #define KMP_INT64_SPEC "I64d" 140 #define KMP_UINT64_SPEC "I64u" 141 #else 142 struct kmp_struct64 { 143 kmp_int32 a, b; 144 }; 145 typedef struct kmp_struct64 kmp_int64; 146 typedef struct kmp_struct64 kmp_uint64; 147 /* Not sure what to use for KMP_[U]INT64_SPEC here */ 148 #endif 149 #if KMP_ARCH_X86 && KMP_MSVC_COMPAT 150 #undef KMP_USE_X87CONTROL 151 #define KMP_USE_X87CONTROL 1 152 #endif 153 #if KMP_ARCH_X86_64 || KMP_ARCH_AARCH64 154 #define KMP_INTPTR 1 155 typedef __int64 kmp_intptr_t; 156 typedef unsigned __int64 kmp_uintptr_t; 157 #define KMP_INTPTR_SPEC "I64d" 158 #define KMP_UINTPTR_SPEC "I64u" 159 #endif 160 #endif /* KMP_OS_WINDOWS */ 161 162 #if KMP_OS_UNIX 163 #define KMP_END_OF_LINE "\n" 164 typedef char kmp_int8; 165 typedef unsigned char kmp_uint8; 166 typedef short kmp_int16; 167 typedef unsigned short kmp_uint16; 168 typedef int kmp_int32; 169 typedef unsigned int kmp_uint32; 170 typedef long long kmp_int64; 171 typedef unsigned long long kmp_uint64; 172 #define KMP_INT32_SPEC "d" 173 #define KMP_UINT32_SPEC "u" 174 #define KMP_INT64_SPEC "lld" 175 #define KMP_UINT64_SPEC "llu" 176 #endif /* KMP_OS_UNIX */ 177 178 #if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS 179 #define KMP_SIZE_T_SPEC KMP_UINT32_SPEC 180 #elif KMP_ARCH_X86_64 || KMP_ARCH_PPC64 || KMP_ARCH_AARCH64 || \ 181 KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 182 #define KMP_SIZE_T_SPEC KMP_UINT64_SPEC 183 #else 184 #error "Can't determine size_t printf format specifier." 185 #endif 186 187 #if KMP_ARCH_X86 || KMP_ARCH_ARM 188 #define KMP_SIZE_T_MAX (0xFFFFFFFF) 189 #else 190 #define KMP_SIZE_T_MAX (0xFFFFFFFFFFFFFFFF) 191 #endif 192 193 typedef size_t kmp_size_t; 194 typedef float kmp_real32; 195 typedef double kmp_real64; 196 197 #ifndef KMP_INTPTR 198 #define KMP_INTPTR 1 199 typedef long kmp_intptr_t; 200 typedef unsigned long kmp_uintptr_t; 201 #define KMP_INTPTR_SPEC "ld" 202 #define KMP_UINTPTR_SPEC "lu" 203 #endif 204 205 #ifdef BUILD_I8 206 typedef kmp_int64 kmp_int; 207 typedef kmp_uint64 kmp_uint; 208 #else 209 typedef kmp_int32 kmp_int; 210 typedef kmp_uint32 kmp_uint; 211 #endif /* BUILD_I8 */ 212 #define KMP_INT_MAX ((kmp_int32)0x7FFFFFFF) 213 #define KMP_INT_MIN ((kmp_int32)0x80000000) 214 215 // stdarg handling 216 #if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64) && \ 217 (KMP_OS_FREEBSD || KMP_OS_LINUX) 218 typedef va_list *kmp_va_list; 219 #define kmp_va_deref(ap) (*(ap)) 220 #define kmp_va_addr_of(ap) (&(ap)) 221 #else 222 typedef va_list kmp_va_list; 223 #define kmp_va_deref(ap) (ap) 224 #define kmp_va_addr_of(ap) (ap) 225 #endif 226 227 #ifdef __cplusplus 228 // macros to cast out qualifiers and to re-interpret types 229 #define CCAST(type, var) const_cast<type>(var) 230 #define RCAST(type, var) reinterpret_cast<type>(var) 231 //------------------------------------------------------------------------- 232 // template for debug prints specification ( d, u, lld, llu ), and to obtain 233 // signed/unsigned flavors of a type 234 template <typename T> struct traits_t {}; 235 // int 236 template <> struct traits_t<signed int> { 237 typedef signed int signed_t; 238 typedef unsigned int unsigned_t; 239 typedef double floating_t; 240 static char const *spec; 241 static const signed_t max_value = 0x7fffffff; 242 static const signed_t min_value = 0x80000000; 243 static const int type_size = sizeof(signed_t); 244 }; 245 // unsigned int 246 template <> struct traits_t<unsigned int> { 247 typedef signed int signed_t; 248 typedef unsigned int unsigned_t; 249 typedef double floating_t; 250 static char const *spec; 251 static const unsigned_t max_value = 0xffffffff; 252 static const unsigned_t min_value = 0x00000000; 253 static const int type_size = sizeof(unsigned_t); 254 }; 255 // long 256 template <> struct traits_t<signed long> { 257 typedef signed long signed_t; 258 typedef unsigned long unsigned_t; 259 typedef long double floating_t; 260 static char const *spec; 261 static const int type_size = sizeof(signed_t); 262 }; 263 // long long 264 template <> struct traits_t<signed long long> { 265 typedef signed long long signed_t; 266 typedef unsigned long long unsigned_t; 267 typedef long double floating_t; 268 static char const *spec; 269 static const signed_t max_value = 0x7fffffffffffffffLL; 270 static const signed_t min_value = 0x8000000000000000LL; 271 static const int type_size = sizeof(signed_t); 272 }; 273 // unsigned long long 274 template <> struct traits_t<unsigned long long> { 275 typedef signed long long signed_t; 276 typedef unsigned long long unsigned_t; 277 typedef long double floating_t; 278 static char const *spec; 279 static const unsigned_t max_value = 0xffffffffffffffffLL; 280 static const unsigned_t min_value = 0x0000000000000000LL; 281 static const int type_size = sizeof(unsigned_t); 282 }; 283 //------------------------------------------------------------------------- 284 #else 285 #define CCAST(type, var) (type)(var) 286 #define RCAST(type, var) (type)(var) 287 #endif // __cplusplus 288 289 #define KMP_EXPORT extern /* export declaration in guide libraries */ 290 291 #if __GNUC__ >= 4 && !defined(__MINGW32__) 292 #define __forceinline __inline 293 #endif 294 295 /* Check if the OS/arch can support user-level mwait */ 296 // All mwait code tests for UMWAIT first, so it should only fall back to ring3 297 // MWAIT for KNL. 298 #define KMP_HAVE_MWAIT \ 299 ((KMP_ARCH_X86 || KMP_ARCH_X86_64) && (KMP_OS_LINUX || KMP_OS_WINDOWS) && \ 300 !KMP_MIC2) 301 #define KMP_HAVE_UMWAIT \ 302 ((KMP_ARCH_X86 || KMP_ARCH_X86_64) && (KMP_OS_LINUX || KMP_OS_WINDOWS) && \ 303 !KMP_MIC) 304 305 #if KMP_OS_WINDOWS 306 #include <windows.h> 307 308 static inline int KMP_GET_PAGE_SIZE(void) { 309 SYSTEM_INFO si; 310 GetSystemInfo(&si); 311 return si.dwPageSize; 312 } 313 #else 314 #define KMP_GET_PAGE_SIZE() getpagesize() 315 #endif 316 317 #define PAGE_ALIGNED(_addr) \ 318 (!((size_t)_addr & (size_t)(KMP_GET_PAGE_SIZE() - 1))) 319 #define ALIGN_TO_PAGE(x) \ 320 (void *)(((size_t)(x)) & ~((size_t)(KMP_GET_PAGE_SIZE() - 1))) 321 322 /* ---------- Support for cache alignment, padding, etc. ----------------*/ 323 324 #ifdef __cplusplus 325 extern "C" { 326 #endif // __cplusplus 327 328 #define INTERNODE_CACHE_LINE 4096 /* for multi-node systems */ 329 330 /* Define the default size of the cache line */ 331 #ifndef CACHE_LINE 332 #define CACHE_LINE 128 /* cache line size in bytes */ 333 #else 334 #if (CACHE_LINE < 64) && !defined(KMP_OS_DARWIN) 335 // 2006-02-13: This produces too many warnings on OS X*. Disable for now 336 #warning CACHE_LINE is too small. 337 #endif 338 #endif /* CACHE_LINE */ 339 340 #define KMP_CACHE_PREFETCH(ADDR) /* nothing */ 341 342 // Define attribute that indicates that the fall through from the previous 343 // case label is intentional and should not be diagnosed by a compiler 344 // Code from libcxx/include/__config 345 // Use a function like macro to imply that it must be followed by a semicolon 346 #if __cplusplus > 201402L && __has_cpp_attribute(fallthrough) 347 #define KMP_FALLTHROUGH() [[fallthrough]] 348 // icc cannot properly tell this attribute is absent so force off 349 #elif KMP_COMPILER_ICC 350 #define KMP_FALLTHROUGH() ((void)0) 351 #elif __has_cpp_attribute(clang::fallthrough) 352 #define KMP_FALLTHROUGH() [[clang::fallthrough]] 353 #elif __has_attribute(fallthrough) || __GNUC__ >= 7 354 #define KMP_FALLTHROUGH() __attribute__((__fallthrough__)) 355 #else 356 #define KMP_FALLTHROUGH() ((void)0) 357 #endif 358 359 #if KMP_HAVE_ATTRIBUTE_WAITPKG 360 #define KMP_ATTRIBUTE_TARGET_WAITPKG __attribute__((target("waitpkg"))) 361 #else 362 #define KMP_ATTRIBUTE_TARGET_WAITPKG /* Nothing */ 363 #endif 364 365 #if KMP_HAVE_ATTRIBUTE_RTM 366 #define KMP_ATTRIBUTE_TARGET_RTM __attribute__((target("rtm"))) 367 #else 368 #define KMP_ATTRIBUTE_TARGET_RTM /* Nothing */ 369 #endif 370 371 // Define attribute that indicates a function does not return 372 #if __cplusplus >= 201103L 373 #define KMP_NORETURN [[noreturn]] 374 #elif KMP_OS_WINDOWS 375 #define KMP_NORETURN __declspec(noreturn) 376 #else 377 #define KMP_NORETURN __attribute__((noreturn)) 378 #endif 379 380 #if KMP_OS_WINDOWS && KMP_MSVC_COMPAT 381 #define KMP_ALIGN(bytes) __declspec(align(bytes)) 382 #define KMP_THREAD_LOCAL __declspec(thread) 383 #define KMP_ALIAS /* Nothing */ 384 #else 385 #define KMP_ALIGN(bytes) __attribute__((aligned(bytes))) 386 #define KMP_THREAD_LOCAL __thread 387 #define KMP_ALIAS(alias_of) __attribute__((alias(alias_of))) 388 #endif 389 390 #if KMP_HAVE_WEAK_ATTRIBUTE && !KMP_DYNAMIC_LIB 391 #define KMP_WEAK_ATTRIBUTE_EXTERNAL __attribute__((weak)) 392 #else 393 #define KMP_WEAK_ATTRIBUTE_EXTERNAL /* Nothing */ 394 #endif 395 396 #if KMP_HAVE_WEAK_ATTRIBUTE 397 #define KMP_WEAK_ATTRIBUTE_INTERNAL __attribute__((weak)) 398 #else 399 #define KMP_WEAK_ATTRIBUTE_INTERNAL /* Nothing */ 400 #endif 401 402 // Define KMP_VERSION_SYMBOL and KMP_EXPAND_NAME 403 #ifndef KMP_STR 404 #define KMP_STR(x) _KMP_STR(x) 405 #define _KMP_STR(x) #x 406 #endif 407 408 #ifdef KMP_USE_VERSION_SYMBOLS 409 // If using versioned symbols, KMP_EXPAND_NAME prepends 410 // __kmp_api_ to the real API name 411 #define KMP_EXPAND_NAME(api_name) _KMP_EXPAND_NAME(api_name) 412 #define _KMP_EXPAND_NAME(api_name) __kmp_api_##api_name 413 #define KMP_VERSION_SYMBOL(api_name, ver_num, ver_str) \ 414 _KMP_VERSION_SYMBOL(api_name, ver_num, ver_str, "VERSION") 415 #define _KMP_VERSION_SYMBOL(api_name, ver_num, ver_str, default_ver) \ 416 __typeof__(__kmp_api_##api_name) __kmp_api_##api_name##_##ver_num##_alias \ 417 __attribute__((alias(KMP_STR(__kmp_api_##api_name)))); \ 418 __asm__( \ 419 ".symver " KMP_STR(__kmp_api_##api_name##_##ver_num##_alias) "," KMP_STR( \ 420 api_name) "@" ver_str "\n\t"); \ 421 __asm__(".symver " KMP_STR(__kmp_api_##api_name) "," KMP_STR( \ 422 api_name) "@@" default_ver "\n\t") 423 424 #define KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, ver_str) \ 425 _KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, ver_str, "VERSION") 426 #define _KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, ver_str, \ 427 default_ver) \ 428 __typeof__(__kmp_api_##apic_name) __kmp_api_##apic_name##_##ver_num##_alias \ 429 __attribute__((alias(KMP_STR(__kmp_api_##apic_name)))); \ 430 __asm__(".symver " KMP_STR(__kmp_api_##apic_name) "," KMP_STR( \ 431 apic_name) "@@" default_ver "\n\t"); \ 432 __asm__( \ 433 ".symver " KMP_STR(__kmp_api_##apic_name##_##ver_num##_alias) "," KMP_STR( \ 434 api_name) "@" ver_str "\n\t") 435 436 #else // KMP_USE_VERSION_SYMBOLS 437 #define KMP_EXPAND_NAME(api_name) api_name 438 #define KMP_VERSION_SYMBOL(api_name, ver_num, ver_str) /* Nothing */ 439 #define KMP_VERSION_OMPC_SYMBOL(apic_name, api_name, ver_num, \ 440 ver_str) /* Nothing */ 441 #endif // KMP_USE_VERSION_SYMBOLS 442 443 /* Temporary note: if performance testing of this passes, we can remove 444 all references to KMP_DO_ALIGN and replace with KMP_ALIGN. */ 445 #define KMP_DO_ALIGN(bytes) KMP_ALIGN(bytes) 446 #define KMP_ALIGN_CACHE KMP_ALIGN(CACHE_LINE) 447 #define KMP_ALIGN_CACHE_INTERNODE KMP_ALIGN(INTERNODE_CACHE_LINE) 448 449 /* General purpose fence types for memory operations */ 450 enum kmp_mem_fence_type { 451 kmp_no_fence, /* No memory fence */ 452 kmp_acquire_fence, /* Acquire (read) memory fence */ 453 kmp_release_fence, /* Release (write) memory fence */ 454 kmp_full_fence /* Full (read+write) memory fence */ 455 }; 456 457 // Synchronization primitives 458 459 #if KMP_ASM_INTRINS && KMP_OS_WINDOWS && !((KMP_ARCH_AARCH64 || KMP_ARCH_ARM) && (KMP_COMPILER_CLANG || KMP_COMPILER_GCC)) 460 461 #if KMP_MSVC_COMPAT && !KMP_COMPILER_CLANG 462 #pragma intrinsic(InterlockedExchangeAdd) 463 #pragma intrinsic(InterlockedCompareExchange) 464 #pragma intrinsic(InterlockedExchange) 465 #if !(KMP_COMPILER_ICX && KMP_32_BIT_ARCH) 466 #pragma intrinsic(InterlockedExchange64) 467 #endif 468 #endif 469 470 // Using InterlockedIncrement / InterlockedDecrement causes a library loading 471 // ordering problem, so we use InterlockedExchangeAdd instead. 472 #define KMP_TEST_THEN_INC32(p) InterlockedExchangeAdd((volatile long *)(p), 1) 473 #define KMP_TEST_THEN_INC_ACQ32(p) \ 474 InterlockedExchangeAdd((volatile long *)(p), 1) 475 #define KMP_TEST_THEN_ADD4_32(p) InterlockedExchangeAdd((volatile long *)(p), 4) 476 #define KMP_TEST_THEN_ADD4_ACQ32(p) \ 477 InterlockedExchangeAdd((volatile long *)(p), 4) 478 #define KMP_TEST_THEN_DEC32(p) InterlockedExchangeAdd((volatile long *)(p), -1) 479 #define KMP_TEST_THEN_DEC_ACQ32(p) \ 480 InterlockedExchangeAdd((volatile long *)(p), -1) 481 #define KMP_TEST_THEN_ADD32(p, v) \ 482 InterlockedExchangeAdd((volatile long *)(p), (v)) 483 484 #define KMP_COMPARE_AND_STORE_RET32(p, cv, sv) \ 485 InterlockedCompareExchange((volatile long *)(p), (long)(sv), (long)(cv)) 486 487 #define KMP_XCHG_FIXED32(p, v) \ 488 InterlockedExchange((volatile long *)(p), (long)(v)) 489 #define KMP_XCHG_FIXED64(p, v) \ 490 InterlockedExchange64((volatile kmp_int64 *)(p), (kmp_int64)(v)) 491 492 inline kmp_real32 KMP_XCHG_REAL32(volatile kmp_real32 *p, kmp_real32 v) { 493 kmp_int32 tmp = InterlockedExchange((volatile long *)p, *(long *)&v); 494 return *(kmp_real32 *)&tmp; 495 } 496 497 #define KMP_TEST_THEN_OR8(p, v) __kmp_test_then_or8((p), (v)) 498 #define KMP_TEST_THEN_AND8(p, v) __kmp_test_then_and8((p), (v)) 499 #define KMP_TEST_THEN_OR32(p, v) __kmp_test_then_or32((p), (v)) 500 #define KMP_TEST_THEN_AND32(p, v) __kmp_test_then_and32((p), (v)) 501 #define KMP_TEST_THEN_OR64(p, v) __kmp_test_then_or64((p), (v)) 502 #define KMP_TEST_THEN_AND64(p, v) __kmp_test_then_and64((p), (v)) 503 504 extern kmp_int8 __kmp_test_then_or8(volatile kmp_int8 *p, kmp_int8 v); 505 extern kmp_int8 __kmp_test_then_and8(volatile kmp_int8 *p, kmp_int8 v); 506 extern kmp_int32 __kmp_test_then_add32(volatile kmp_int32 *p, kmp_int32 v); 507 extern kmp_uint32 __kmp_test_then_or32(volatile kmp_uint32 *p, kmp_uint32 v); 508 extern kmp_uint32 __kmp_test_then_and32(volatile kmp_uint32 *p, kmp_uint32 v); 509 extern kmp_int64 __kmp_test_then_add64(volatile kmp_int64 *p, kmp_int64 v); 510 extern kmp_uint64 __kmp_test_then_or64(volatile kmp_uint64 *p, kmp_uint64 v); 511 extern kmp_uint64 __kmp_test_then_and64(volatile kmp_uint64 *p, kmp_uint64 v); 512 513 #if KMP_ARCH_AARCH64 && KMP_COMPILER_MSVC && !KMP_COMPILER_CLANG 514 #define KMP_TEST_THEN_INC64(p) _InterlockedExchangeAdd64((p), 1LL) 515 #define KMP_TEST_THEN_INC_ACQ64(p) _InterlockedExchangeAdd64_acq((p), 1LL) 516 #define KMP_TEST_THEN_ADD4_64(p) _InterlockedExchangeAdd64((p), 4LL) 517 // #define KMP_TEST_THEN_ADD4_ACQ64(p) _InterlockedExchangeAdd64_acq((p), 4LL) 518 // #define KMP_TEST_THEN_DEC64(p) _InterlockedExchangeAdd64((p), -1LL) 519 // #define KMP_TEST_THEN_DEC_ACQ64(p) _InterlockedExchangeAdd64_acq((p), -1LL) 520 // #define KMP_TEST_THEN_ADD8(p, v) _InterlockedExchangeAdd8((p), (v)) 521 #define KMP_TEST_THEN_ADD64(p, v) _InterlockedExchangeAdd64((p), (v)) 522 523 #define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv) \ 524 __kmp_compare_and_store_acq8((p), (cv), (sv)) 525 #define KMP_COMPARE_AND_STORE_REL8(p, cv, sv) \ 526 __kmp_compare_and_store_rel8((p), (cv), (sv)) 527 #define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv) \ 528 __kmp_compare_and_store_acq16((p), (cv), (sv)) 529 /* 530 #define KMP_COMPARE_AND_STORE_REL16(p, cv, sv) \ 531 __kmp_compare_and_store_rel16((p), (cv), (sv)) 532 */ 533 #define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv) \ 534 __kmp_compare_and_store_acq32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 535 (kmp_int32)(sv)) 536 #define KMP_COMPARE_AND_STORE_REL32(p, cv, sv) \ 537 __kmp_compare_and_store_rel32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 538 (kmp_int32)(sv)) 539 #define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv) \ 540 __kmp_compare_and_store_acq64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 541 (kmp_int64)(sv)) 542 #define KMP_COMPARE_AND_STORE_REL64(p, cv, sv) \ 543 __kmp_compare_and_store_rel64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 544 (kmp_int64)(sv)) 545 #define KMP_COMPARE_AND_STORE_PTR(p, cv, sv) \ 546 __kmp_compare_and_store_ptr((void *volatile *)(p), (void *)(cv), (void *)(sv)) 547 548 // KMP_COMPARE_AND_STORE expects this order: pointer, compare, exchange 549 // _InterlockedCompareExchange expects this order: pointer, exchange, compare 550 // KMP_COMPARE_AND_STORE also returns a bool indicating a successful write. A 551 // write is successful if the return value of _InterlockedCompareExchange is the 552 // same as the compare value. 553 inline kmp_int8 __kmp_compare_and_store_acq8(volatile kmp_int8 *p, kmp_int8 cv, 554 kmp_int8 sv) { 555 return _InterlockedCompareExchange8_acq(p, sv, cv) == cv; 556 } 557 558 inline kmp_int8 __kmp_compare_and_store_rel8(volatile kmp_int8 *p, kmp_int8 cv, 559 kmp_int8 sv) { 560 return _InterlockedCompareExchange8_rel(p, sv, cv) == cv; 561 } 562 563 inline kmp_int16 __kmp_compare_and_store_acq16(volatile kmp_int16 *p, 564 kmp_int16 cv, kmp_int16 sv) { 565 return _InterlockedCompareExchange16_acq(p, sv, cv) == cv; 566 } 567 568 inline kmp_int16 __kmp_compare_and_store_rel16(volatile kmp_int16 *p, 569 kmp_int16 cv, kmp_int16 sv) { 570 return _InterlockedCompareExchange16_rel(p, sv, cv) == cv; 571 } 572 573 inline kmp_int32 __kmp_compare_and_store_acq32(volatile kmp_int32 *p, 574 kmp_int32 cv, kmp_int32 sv) { 575 return _InterlockedCompareExchange_acq((volatile long *)p, sv, cv) == cv; 576 } 577 578 inline kmp_int32 __kmp_compare_and_store_rel32(volatile kmp_int32 *p, 579 kmp_int32 cv, kmp_int32 sv) { 580 return _InterlockedCompareExchange_rel((volatile long *)p, sv, cv) == cv; 581 } 582 583 inline kmp_int32 __kmp_compare_and_store_acq64(volatile kmp_int64 *p, 584 kmp_int64 cv, kmp_int64 sv) { 585 return _InterlockedCompareExchange64_acq(p, sv, cv) == cv; 586 } 587 588 inline kmp_int32 __kmp_compare_and_store_rel64(volatile kmp_int64 *p, 589 kmp_int64 cv, kmp_int64 sv) { 590 return _InterlockedCompareExchange64_rel(p, sv, cv) == cv; 591 } 592 593 inline kmp_int32 __kmp_compare_and_store_ptr(void *volatile *p, void *cv, 594 void *sv) { 595 return _InterlockedCompareExchangePointer(p, sv, cv) == cv; 596 } 597 598 // The _RET versions return the value instead of a bool 599 600 #define KMP_COMPARE_AND_STORE_RET8(p, cv, sv) \ 601 _InterlockedCompareExchange8((p), (sv), (cv)) 602 #define KMP_COMPARE_AND_STORE_RET16(p, cv, sv) \ 603 _InterlockedCompareExchange16((p), (sv), (cv)) 604 605 #define KMP_COMPARE_AND_STORE_RET64(p, cv, sv) \ 606 _InterlockedCompareExchange64((volatile kmp_int64 *)(p), (kmp_int64)(sv), \ 607 (kmp_int64)(cv)) 608 609 610 #define KMP_XCHG_FIXED8(p, v) \ 611 _InterlockedExchange8((volatile kmp_int8 *)(p), (kmp_int8)(v)); 612 #define KMP_XCHG_FIXED16(p, v) _InterlockedExchange16((p), (v)); 613 #define KMP_XCHG_REAL64(p, v) __kmp_xchg_real64((p), (v))); 614 615 inline kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v) { 616 kmp_int64 tmp = _InterlockedExchange64((volatile kmp_int64 *)p, *(kmp_int64 617 *)&v); return *(kmp_real64 *)&tmp; 618 } 619 620 #else // !KMP_ARCH_AARCH64 621 622 // Routines that we still need to implement in assembly. 623 extern kmp_int8 __kmp_test_then_add8(volatile kmp_int8 *p, kmp_int8 v); 624 625 extern kmp_int8 __kmp_compare_and_store8(volatile kmp_int8 *p, kmp_int8 cv, 626 kmp_int8 sv); 627 extern kmp_int16 __kmp_compare_and_store16(volatile kmp_int16 *p, kmp_int16 cv, 628 kmp_int16 sv); 629 extern kmp_int32 __kmp_compare_and_store32(volatile kmp_int32 *p, kmp_int32 cv, 630 kmp_int32 sv); 631 extern kmp_int32 __kmp_compare_and_store64(volatile kmp_int64 *p, kmp_int64 cv, 632 kmp_int64 sv); 633 extern kmp_int8 __kmp_compare_and_store_ret8(volatile kmp_int8 *p, kmp_int8 cv, 634 kmp_int8 sv); 635 extern kmp_int16 __kmp_compare_and_store_ret16(volatile kmp_int16 *p, 636 kmp_int16 cv, kmp_int16 sv); 637 extern kmp_int32 __kmp_compare_and_store_ret32(volatile kmp_int32 *p, 638 kmp_int32 cv, kmp_int32 sv); 639 extern kmp_int64 __kmp_compare_and_store_ret64(volatile kmp_int64 *p, 640 kmp_int64 cv, kmp_int64 sv); 641 642 extern kmp_int8 __kmp_xchg_fixed8(volatile kmp_int8 *p, kmp_int8 v); 643 extern kmp_int16 __kmp_xchg_fixed16(volatile kmp_int16 *p, kmp_int16 v); 644 extern kmp_int32 __kmp_xchg_fixed32(volatile kmp_int32 *p, kmp_int32 v); 645 extern kmp_int64 __kmp_xchg_fixed64(volatile kmp_int64 *p, kmp_int64 v); 646 extern kmp_real32 __kmp_xchg_real32(volatile kmp_real32 *p, kmp_real32 v); 647 extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v); 648 649 //#define KMP_TEST_THEN_INC32(p) __kmp_test_then_add32((p), 1) 650 //#define KMP_TEST_THEN_INC_ACQ32(p) __kmp_test_then_add32((p), 1) 651 #define KMP_TEST_THEN_INC64(p) __kmp_test_then_add64((p), 1LL) 652 #define KMP_TEST_THEN_INC_ACQ64(p) __kmp_test_then_add64((p), 1LL) 653 //#define KMP_TEST_THEN_ADD4_32(p) __kmp_test_then_add32((p), 4) 654 //#define KMP_TEST_THEN_ADD4_ACQ32(p) __kmp_test_then_add32((p), 4) 655 #define KMP_TEST_THEN_ADD4_64(p) __kmp_test_then_add64((p), 4LL) 656 #define KMP_TEST_THEN_ADD4_ACQ64(p) __kmp_test_then_add64((p), 4LL) 657 //#define KMP_TEST_THEN_DEC32(p) __kmp_test_then_add32((p), -1) 658 //#define KMP_TEST_THEN_DEC_ACQ32(p) __kmp_test_then_add32((p), -1) 659 #define KMP_TEST_THEN_DEC64(p) __kmp_test_then_add64((p), -1LL) 660 #define KMP_TEST_THEN_DEC_ACQ64(p) __kmp_test_then_add64((p), -1LL) 661 //#define KMP_TEST_THEN_ADD32(p, v) __kmp_test_then_add32((p), (v)) 662 #define KMP_TEST_THEN_ADD8(p, v) __kmp_test_then_add8((p), (v)) 663 #define KMP_TEST_THEN_ADD64(p, v) __kmp_test_then_add64((p), (v)) 664 665 666 #define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv) \ 667 __kmp_compare_and_store8((p), (cv), (sv)) 668 #define KMP_COMPARE_AND_STORE_REL8(p, cv, sv) \ 669 __kmp_compare_and_store8((p), (cv), (sv)) 670 #define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv) \ 671 __kmp_compare_and_store16((p), (cv), (sv)) 672 #define KMP_COMPARE_AND_STORE_REL16(p, cv, sv) \ 673 __kmp_compare_and_store16((p), (cv), (sv)) 674 #define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv) \ 675 __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 676 (kmp_int32)(sv)) 677 #define KMP_COMPARE_AND_STORE_REL32(p, cv, sv) \ 678 __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 679 (kmp_int32)(sv)) 680 #define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv) \ 681 __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 682 (kmp_int64)(sv)) 683 #define KMP_COMPARE_AND_STORE_REL64(p, cv, sv) \ 684 __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 685 (kmp_int64)(sv)) 686 687 #if KMP_ARCH_X86 688 #define KMP_COMPARE_AND_STORE_PTR(p, cv, sv) \ 689 __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 690 (kmp_int32)(sv)) 691 #else /* 64 bit pointers */ 692 #define KMP_COMPARE_AND_STORE_PTR(p, cv, sv) \ 693 __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 694 (kmp_int64)(sv)) 695 #endif /* KMP_ARCH_X86 */ 696 697 #define KMP_COMPARE_AND_STORE_RET8(p, cv, sv) \ 698 __kmp_compare_and_store_ret8((p), (cv), (sv)) 699 #define KMP_COMPARE_AND_STORE_RET16(p, cv, sv) \ 700 __kmp_compare_and_store_ret16((p), (cv), (sv)) 701 #define KMP_COMPARE_AND_STORE_RET64(p, cv, sv) \ 702 __kmp_compare_and_store_ret64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 703 (kmp_int64)(sv)) 704 705 #define KMP_XCHG_FIXED8(p, v) \ 706 __kmp_xchg_fixed8((volatile kmp_int8 *)(p), (kmp_int8)(v)); 707 #define KMP_XCHG_FIXED16(p, v) __kmp_xchg_fixed16((p), (v)); 708 //#define KMP_XCHG_FIXED32(p, v) __kmp_xchg_fixed32((p), (v)); 709 //#define KMP_XCHG_FIXED64(p, v) __kmp_xchg_fixed64((p), (v)); 710 //#define KMP_XCHG_REAL32(p, v) __kmp_xchg_real32((p), (v)); 711 #define KMP_XCHG_REAL64(p, v) __kmp_xchg_real64((p), (v)); 712 #endif 713 714 #elif (KMP_ASM_INTRINS && KMP_OS_UNIX) || !(KMP_ARCH_X86 || KMP_ARCH_X86_64) 715 716 /* cast p to correct type so that proper intrinsic will be used */ 717 #define KMP_TEST_THEN_INC32(p) \ 718 __sync_fetch_and_add((volatile kmp_int32 *)(p), 1) 719 #define KMP_TEST_THEN_INC_ACQ32(p) \ 720 __sync_fetch_and_add((volatile kmp_int32 *)(p), 1) 721 #if KMP_ARCH_MIPS 722 #define KMP_TEST_THEN_INC64(p) \ 723 __atomic_fetch_add((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST) 724 #define KMP_TEST_THEN_INC_ACQ64(p) \ 725 __atomic_fetch_add((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST) 726 #else 727 #define KMP_TEST_THEN_INC64(p) \ 728 __sync_fetch_and_add((volatile kmp_int64 *)(p), 1LL) 729 #define KMP_TEST_THEN_INC_ACQ64(p) \ 730 __sync_fetch_and_add((volatile kmp_int64 *)(p), 1LL) 731 #endif 732 #define KMP_TEST_THEN_ADD4_32(p) \ 733 __sync_fetch_and_add((volatile kmp_int32 *)(p), 4) 734 #define KMP_TEST_THEN_ADD4_ACQ32(p) \ 735 __sync_fetch_and_add((volatile kmp_int32 *)(p), 4) 736 #if KMP_ARCH_MIPS 737 #define KMP_TEST_THEN_ADD4_64(p) \ 738 __atomic_fetch_add((volatile kmp_int64 *)(p), 4LL, __ATOMIC_SEQ_CST) 739 #define KMP_TEST_THEN_ADD4_ACQ64(p) \ 740 __atomic_fetch_add((volatile kmp_int64 *)(p), 4LL, __ATOMIC_SEQ_CST) 741 #define KMP_TEST_THEN_DEC64(p) \ 742 __atomic_fetch_sub((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST) 743 #define KMP_TEST_THEN_DEC_ACQ64(p) \ 744 __atomic_fetch_sub((volatile kmp_int64 *)(p), 1LL, __ATOMIC_SEQ_CST) 745 #else 746 #define KMP_TEST_THEN_ADD4_64(p) \ 747 __sync_fetch_and_add((volatile kmp_int64 *)(p), 4LL) 748 #define KMP_TEST_THEN_ADD4_ACQ64(p) \ 749 __sync_fetch_and_add((volatile kmp_int64 *)(p), 4LL) 750 #define KMP_TEST_THEN_DEC64(p) \ 751 __sync_fetch_and_sub((volatile kmp_int64 *)(p), 1LL) 752 #define KMP_TEST_THEN_DEC_ACQ64(p) \ 753 __sync_fetch_and_sub((volatile kmp_int64 *)(p), 1LL) 754 #endif 755 #define KMP_TEST_THEN_DEC32(p) \ 756 __sync_fetch_and_sub((volatile kmp_int32 *)(p), 1) 757 #define KMP_TEST_THEN_DEC_ACQ32(p) \ 758 __sync_fetch_and_sub((volatile kmp_int32 *)(p), 1) 759 #define KMP_TEST_THEN_ADD8(p, v) \ 760 __sync_fetch_and_add((volatile kmp_int8 *)(p), (kmp_int8)(v)) 761 #define KMP_TEST_THEN_ADD32(p, v) \ 762 __sync_fetch_and_add((volatile kmp_int32 *)(p), (kmp_int32)(v)) 763 #if KMP_ARCH_MIPS 764 #define KMP_TEST_THEN_ADD64(p, v) \ 765 __atomic_fetch_add((volatile kmp_uint64 *)(p), (kmp_uint64)(v), \ 766 __ATOMIC_SEQ_CST) 767 #else 768 #define KMP_TEST_THEN_ADD64(p, v) \ 769 __sync_fetch_and_add((volatile kmp_int64 *)(p), (kmp_int64)(v)) 770 #endif 771 772 #define KMP_TEST_THEN_OR8(p, v) \ 773 __sync_fetch_and_or((volatile kmp_int8 *)(p), (kmp_int8)(v)) 774 #define KMP_TEST_THEN_AND8(p, v) \ 775 __sync_fetch_and_and((volatile kmp_int8 *)(p), (kmp_int8)(v)) 776 #define KMP_TEST_THEN_OR32(p, v) \ 777 __sync_fetch_and_or((volatile kmp_uint32 *)(p), (kmp_uint32)(v)) 778 #define KMP_TEST_THEN_AND32(p, v) \ 779 __sync_fetch_and_and((volatile kmp_uint32 *)(p), (kmp_uint32)(v)) 780 #if KMP_ARCH_MIPS 781 #define KMP_TEST_THEN_OR64(p, v) \ 782 __atomic_fetch_or((volatile kmp_uint64 *)(p), (kmp_uint64)(v), \ 783 __ATOMIC_SEQ_CST) 784 #define KMP_TEST_THEN_AND64(p, v) \ 785 __atomic_fetch_and((volatile kmp_uint64 *)(p), (kmp_uint64)(v), \ 786 __ATOMIC_SEQ_CST) 787 #else 788 #define KMP_TEST_THEN_OR64(p, v) \ 789 __sync_fetch_and_or((volatile kmp_uint64 *)(p), (kmp_uint64)(v)) 790 #define KMP_TEST_THEN_AND64(p, v) \ 791 __sync_fetch_and_and((volatile kmp_uint64 *)(p), (kmp_uint64)(v)) 792 #endif 793 794 #define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv) \ 795 __sync_bool_compare_and_swap((volatile kmp_uint8 *)(p), (kmp_uint8)(cv), \ 796 (kmp_uint8)(sv)) 797 #define KMP_COMPARE_AND_STORE_REL8(p, cv, sv) \ 798 __sync_bool_compare_and_swap((volatile kmp_uint8 *)(p), (kmp_uint8)(cv), \ 799 (kmp_uint8)(sv)) 800 #define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv) \ 801 __sync_bool_compare_and_swap((volatile kmp_uint16 *)(p), (kmp_uint16)(cv), \ 802 (kmp_uint16)(sv)) 803 #define KMP_COMPARE_AND_STORE_REL16(p, cv, sv) \ 804 __sync_bool_compare_and_swap((volatile kmp_uint16 *)(p), (kmp_uint16)(cv), \ 805 (kmp_uint16)(sv)) 806 #define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv) \ 807 __sync_bool_compare_and_swap((volatile kmp_uint32 *)(p), (kmp_uint32)(cv), \ 808 (kmp_uint32)(sv)) 809 #define KMP_COMPARE_AND_STORE_REL32(p, cv, sv) \ 810 __sync_bool_compare_and_swap((volatile kmp_uint32 *)(p), (kmp_uint32)(cv), \ 811 (kmp_uint32)(sv)) 812 #define KMP_COMPARE_AND_STORE_PTR(p, cv, sv) \ 813 __sync_bool_compare_and_swap((void *volatile *)(p), (void *)(cv), \ 814 (void *)(sv)) 815 816 #define KMP_COMPARE_AND_STORE_RET8(p, cv, sv) \ 817 __sync_val_compare_and_swap((volatile kmp_uint8 *)(p), (kmp_uint8)(cv), \ 818 (kmp_uint8)(sv)) 819 #define KMP_COMPARE_AND_STORE_RET16(p, cv, sv) \ 820 __sync_val_compare_and_swap((volatile kmp_uint16 *)(p), (kmp_uint16)(cv), \ 821 (kmp_uint16)(sv)) 822 #define KMP_COMPARE_AND_STORE_RET32(p, cv, sv) \ 823 __sync_val_compare_and_swap((volatile kmp_uint32 *)(p), (kmp_uint32)(cv), \ 824 (kmp_uint32)(sv)) 825 #if KMP_ARCH_MIPS 826 static inline bool mips_sync_bool_compare_and_swap(volatile kmp_uint64 *p, 827 kmp_uint64 cv, 828 kmp_uint64 sv) { 829 return __atomic_compare_exchange(p, &cv, &sv, false, __ATOMIC_SEQ_CST, 830 __ATOMIC_SEQ_CST); 831 } 832 static inline bool mips_sync_val_compare_and_swap(volatile kmp_uint64 *p, 833 kmp_uint64 cv, 834 kmp_uint64 sv) { 835 __atomic_compare_exchange(p, &cv, &sv, false, __ATOMIC_SEQ_CST, 836 __ATOMIC_SEQ_CST); 837 return cv; 838 } 839 #define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv) \ 840 mips_sync_bool_compare_and_swap((volatile kmp_uint64 *)(p), \ 841 (kmp_uint64)(cv), (kmp_uint64)(sv)) 842 #define KMP_COMPARE_AND_STORE_REL64(p, cv, sv) \ 843 mips_sync_bool_compare_and_swap((volatile kmp_uint64 *)(p), \ 844 (kmp_uint64)(cv), (kmp_uint64)(sv)) 845 #define KMP_COMPARE_AND_STORE_RET64(p, cv, sv) \ 846 mips_sync_val_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv), \ 847 (kmp_uint64)(sv)) 848 #else 849 #define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv) \ 850 __sync_bool_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv), \ 851 (kmp_uint64)(sv)) 852 #define KMP_COMPARE_AND_STORE_REL64(p, cv, sv) \ 853 __sync_bool_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv), \ 854 (kmp_uint64)(sv)) 855 #define KMP_COMPARE_AND_STORE_RET64(p, cv, sv) \ 856 __sync_val_compare_and_swap((volatile kmp_uint64 *)(p), (kmp_uint64)(cv), \ 857 (kmp_uint64)(sv)) 858 #endif 859 860 #if KMP_OS_DARWIN && defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1800 861 #define KMP_XCHG_FIXED8(p, v) \ 862 __atomic_exchange_1((volatile kmp_uint8 *)(p), (kmp_uint8)(v), \ 863 __ATOMIC_SEQ_CST) 864 #else 865 #define KMP_XCHG_FIXED8(p, v) \ 866 __sync_lock_test_and_set((volatile kmp_uint8 *)(p), (kmp_uint8)(v)) 867 #endif 868 #define KMP_XCHG_FIXED16(p, v) \ 869 __sync_lock_test_and_set((volatile kmp_uint16 *)(p), (kmp_uint16)(v)) 870 #define KMP_XCHG_FIXED32(p, v) \ 871 __sync_lock_test_and_set((volatile kmp_uint32 *)(p), (kmp_uint32)(v)) 872 #define KMP_XCHG_FIXED64(p, v) \ 873 __sync_lock_test_and_set((volatile kmp_uint64 *)(p), (kmp_uint64)(v)) 874 875 inline kmp_real32 KMP_XCHG_REAL32(volatile kmp_real32 *p, kmp_real32 v) { 876 volatile kmp_uint32 *up; 877 kmp_uint32 uv; 878 memcpy(&up, &p, sizeof(up)); 879 memcpy(&uv, &v, sizeof(uv)); 880 kmp_int32 tmp = __sync_lock_test_and_set(up, uv); 881 kmp_real32 ftmp; 882 memcpy(&ftmp, &tmp, sizeof(tmp)); 883 return ftmp; 884 } 885 886 inline kmp_real64 KMP_XCHG_REAL64(volatile kmp_real64 *p, kmp_real64 v) { 887 volatile kmp_uint64 *up; 888 kmp_uint64 uv; 889 memcpy(&up, &p, sizeof(up)); 890 memcpy(&uv, &v, sizeof(uv)); 891 kmp_int64 tmp = __sync_lock_test_and_set(up, uv); 892 kmp_real64 dtmp; 893 memcpy(&dtmp, &tmp, sizeof(tmp)); 894 return dtmp; 895 } 896 897 #else 898 899 extern kmp_int8 __kmp_test_then_add8(volatile kmp_int8 *p, kmp_int8 v); 900 extern kmp_int8 __kmp_test_then_or8(volatile kmp_int8 *p, kmp_int8 v); 901 extern kmp_int8 __kmp_test_then_and8(volatile kmp_int8 *p, kmp_int8 v); 902 extern kmp_int32 __kmp_test_then_add32(volatile kmp_int32 *p, kmp_int32 v); 903 extern kmp_uint32 __kmp_test_then_or32(volatile kmp_uint32 *p, kmp_uint32 v); 904 extern kmp_uint32 __kmp_test_then_and32(volatile kmp_uint32 *p, kmp_uint32 v); 905 extern kmp_int64 __kmp_test_then_add64(volatile kmp_int64 *p, kmp_int64 v); 906 extern kmp_uint64 __kmp_test_then_or64(volatile kmp_uint64 *p, kmp_uint64 v); 907 extern kmp_uint64 __kmp_test_then_and64(volatile kmp_uint64 *p, kmp_uint64 v); 908 909 extern kmp_int8 __kmp_compare_and_store8(volatile kmp_int8 *p, kmp_int8 cv, 910 kmp_int8 sv); 911 extern kmp_int16 __kmp_compare_and_store16(volatile kmp_int16 *p, kmp_int16 cv, 912 kmp_int16 sv); 913 extern kmp_int32 __kmp_compare_and_store32(volatile kmp_int32 *p, kmp_int32 cv, 914 kmp_int32 sv); 915 extern kmp_int32 __kmp_compare_and_store64(volatile kmp_int64 *p, kmp_int64 cv, 916 kmp_int64 sv); 917 extern kmp_int8 __kmp_compare_and_store_ret8(volatile kmp_int8 *p, kmp_int8 cv, 918 kmp_int8 sv); 919 extern kmp_int16 __kmp_compare_and_store_ret16(volatile kmp_int16 *p, 920 kmp_int16 cv, kmp_int16 sv); 921 extern kmp_int32 __kmp_compare_and_store_ret32(volatile kmp_int32 *p, 922 kmp_int32 cv, kmp_int32 sv); 923 extern kmp_int64 __kmp_compare_and_store_ret64(volatile kmp_int64 *p, 924 kmp_int64 cv, kmp_int64 sv); 925 926 extern kmp_int8 __kmp_xchg_fixed8(volatile kmp_int8 *p, kmp_int8 v); 927 extern kmp_int16 __kmp_xchg_fixed16(volatile kmp_int16 *p, kmp_int16 v); 928 extern kmp_int32 __kmp_xchg_fixed32(volatile kmp_int32 *p, kmp_int32 v); 929 extern kmp_int64 __kmp_xchg_fixed64(volatile kmp_int64 *p, kmp_int64 v); 930 extern kmp_real32 __kmp_xchg_real32(volatile kmp_real32 *p, kmp_real32 v); 931 extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v); 932 933 #define KMP_TEST_THEN_INC32(p) \ 934 __kmp_test_then_add32((volatile kmp_int32 *)(p), 1) 935 #define KMP_TEST_THEN_INC_ACQ32(p) \ 936 __kmp_test_then_add32((volatile kmp_int32 *)(p), 1) 937 #define KMP_TEST_THEN_INC64(p) \ 938 __kmp_test_then_add64((volatile kmp_int64 *)(p), 1LL) 939 #define KMP_TEST_THEN_INC_ACQ64(p) \ 940 __kmp_test_then_add64((volatile kmp_int64 *)(p), 1LL) 941 #define KMP_TEST_THEN_ADD4_32(p) \ 942 __kmp_test_then_add32((volatile kmp_int32 *)(p), 4) 943 #define KMP_TEST_THEN_ADD4_ACQ32(p) \ 944 __kmp_test_then_add32((volatile kmp_int32 *)(p), 4) 945 #define KMP_TEST_THEN_ADD4_64(p) \ 946 __kmp_test_then_add64((volatile kmp_int64 *)(p), 4LL) 947 #define KMP_TEST_THEN_ADD4_ACQ64(p) \ 948 __kmp_test_then_add64((volatile kmp_int64 *)(p), 4LL) 949 #define KMP_TEST_THEN_DEC32(p) \ 950 __kmp_test_then_add32((volatile kmp_int32 *)(p), -1) 951 #define KMP_TEST_THEN_DEC_ACQ32(p) \ 952 __kmp_test_then_add32((volatile kmp_int32 *)(p), -1) 953 #define KMP_TEST_THEN_DEC64(p) \ 954 __kmp_test_then_add64((volatile kmp_int64 *)(p), -1LL) 955 #define KMP_TEST_THEN_DEC_ACQ64(p) \ 956 __kmp_test_then_add64((volatile kmp_int64 *)(p), -1LL) 957 #define KMP_TEST_THEN_ADD8(p, v) \ 958 __kmp_test_then_add8((volatile kmp_int8 *)(p), (kmp_int8)(v)) 959 #define KMP_TEST_THEN_ADD32(p, v) \ 960 __kmp_test_then_add32((volatile kmp_int32 *)(p), (kmp_int32)(v)) 961 #define KMP_TEST_THEN_ADD64(p, v) \ 962 __kmp_test_then_add64((volatile kmp_int64 *)(p), (kmp_int64)(v)) 963 964 #define KMP_TEST_THEN_OR8(p, v) \ 965 __kmp_test_then_or8((volatile kmp_int8 *)(p), (kmp_int8)(v)) 966 #define KMP_TEST_THEN_AND8(p, v) \ 967 __kmp_test_then_and8((volatile kmp_int8 *)(p), (kmp_int8)(v)) 968 #define KMP_TEST_THEN_OR32(p, v) \ 969 __kmp_test_then_or32((volatile kmp_uint32 *)(p), (kmp_uint32)(v)) 970 #define KMP_TEST_THEN_AND32(p, v) \ 971 __kmp_test_then_and32((volatile kmp_uint32 *)(p), (kmp_uint32)(v)) 972 #define KMP_TEST_THEN_OR64(p, v) \ 973 __kmp_test_then_or64((volatile kmp_uint64 *)(p), (kmp_uint64)(v)) 974 #define KMP_TEST_THEN_AND64(p, v) \ 975 __kmp_test_then_and64((volatile kmp_uint64 *)(p), (kmp_uint64)(v)) 976 977 #define KMP_COMPARE_AND_STORE_ACQ8(p, cv, sv) \ 978 __kmp_compare_and_store8((volatile kmp_int8 *)(p), (kmp_int8)(cv), \ 979 (kmp_int8)(sv)) 980 #define KMP_COMPARE_AND_STORE_REL8(p, cv, sv) \ 981 __kmp_compare_and_store8((volatile kmp_int8 *)(p), (kmp_int8)(cv), \ 982 (kmp_int8)(sv)) 983 #define KMP_COMPARE_AND_STORE_ACQ16(p, cv, sv) \ 984 __kmp_compare_and_store16((volatile kmp_int16 *)(p), (kmp_int16)(cv), \ 985 (kmp_int16)(sv)) 986 #define KMP_COMPARE_AND_STORE_REL16(p, cv, sv) \ 987 __kmp_compare_and_store16((volatile kmp_int16 *)(p), (kmp_int16)(cv), \ 988 (kmp_int16)(sv)) 989 #define KMP_COMPARE_AND_STORE_ACQ32(p, cv, sv) \ 990 __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 991 (kmp_int32)(sv)) 992 #define KMP_COMPARE_AND_STORE_REL32(p, cv, sv) \ 993 __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 994 (kmp_int32)(sv)) 995 #define KMP_COMPARE_AND_STORE_ACQ64(p, cv, sv) \ 996 __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 997 (kmp_int64)(sv)) 998 #define KMP_COMPARE_AND_STORE_REL64(p, cv, sv) \ 999 __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 1000 (kmp_int64)(sv)) 1001 1002 #if KMP_ARCH_X86 1003 #define KMP_COMPARE_AND_STORE_PTR(p, cv, sv) \ 1004 __kmp_compare_and_store32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 1005 (kmp_int32)(sv)) 1006 #else /* 64 bit pointers */ 1007 #define KMP_COMPARE_AND_STORE_PTR(p, cv, sv) \ 1008 __kmp_compare_and_store64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 1009 (kmp_int64)(sv)) 1010 #endif /* KMP_ARCH_X86 */ 1011 1012 #define KMP_COMPARE_AND_STORE_RET8(p, cv, sv) \ 1013 __kmp_compare_and_store_ret8((p), (cv), (sv)) 1014 #define KMP_COMPARE_AND_STORE_RET16(p, cv, sv) \ 1015 __kmp_compare_and_store_ret16((p), (cv), (sv)) 1016 #define KMP_COMPARE_AND_STORE_RET32(p, cv, sv) \ 1017 __kmp_compare_and_store_ret32((volatile kmp_int32 *)(p), (kmp_int32)(cv), \ 1018 (kmp_int32)(sv)) 1019 #define KMP_COMPARE_AND_STORE_RET64(p, cv, sv) \ 1020 __kmp_compare_and_store_ret64((volatile kmp_int64 *)(p), (kmp_int64)(cv), \ 1021 (kmp_int64)(sv)) 1022 1023 #define KMP_XCHG_FIXED8(p, v) \ 1024 __kmp_xchg_fixed8((volatile kmp_int8 *)(p), (kmp_int8)(v)); 1025 #define KMP_XCHG_FIXED16(p, v) __kmp_xchg_fixed16((p), (v)); 1026 #define KMP_XCHG_FIXED32(p, v) __kmp_xchg_fixed32((p), (v)); 1027 #define KMP_XCHG_FIXED64(p, v) __kmp_xchg_fixed64((p), (v)); 1028 #define KMP_XCHG_REAL32(p, v) __kmp_xchg_real32((p), (v)); 1029 #define KMP_XCHG_REAL64(p, v) __kmp_xchg_real64((p), (v)); 1030 1031 #endif /* KMP_ASM_INTRINS */ 1032 1033 /* ------------- relaxed consistency memory model stuff ------------------ */ 1034 1035 #if KMP_OS_WINDOWS 1036 #ifdef __ABSOFT_WIN 1037 #define KMP_MB() asm("nop") 1038 #define KMP_IMB() asm("nop") 1039 #else 1040 #define KMP_MB() /* _asm{ nop } */ 1041 #define KMP_IMB() /* _asm{ nop } */ 1042 #endif 1043 #endif /* KMP_OS_WINDOWS */ 1044 1045 #if KMP_ARCH_PPC64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64 || KMP_ARCH_MIPS || \ 1046 KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 1047 #if KMP_OS_WINDOWS 1048 #undef KMP_MB 1049 #define KMP_MB() std::atomic_thread_fence(std::memory_order_seq_cst) 1050 #else /* !KMP_OS_WINDOWS */ 1051 #define KMP_MB() __sync_synchronize() 1052 #endif 1053 #endif 1054 1055 #ifndef KMP_MB 1056 #define KMP_MB() /* nothing to do */ 1057 #endif 1058 1059 #if KMP_ARCH_X86 || KMP_ARCH_X86_64 1060 #if KMP_MIC 1061 // fence-style instructions do not exist, but lock; xaddl $0,(%rsp) can be used. 1062 // We shouldn't need it, though, since the ABI rules require that 1063 // * If the compiler generates NGO stores it also generates the fence 1064 // * If users hand-code NGO stores they should insert the fence 1065 // therefore no incomplete unordered stores should be visible. 1066 #define KMP_MFENCE() /* Nothing */ 1067 #define KMP_SFENCE() /* Nothing */ 1068 #else 1069 #if KMP_COMPILER_ICC || KMP_COMPILER_ICX 1070 #define KMP_MFENCE_() _mm_mfence() 1071 #define KMP_SFENCE_() _mm_sfence() 1072 #elif KMP_COMPILER_MSVC 1073 #define KMP_MFENCE_() MemoryBarrier() 1074 #define KMP_SFENCE_() MemoryBarrier() 1075 #else 1076 #define KMP_MFENCE_() __sync_synchronize() 1077 #define KMP_SFENCE_() __sync_synchronize() 1078 #endif 1079 #define KMP_MFENCE() \ 1080 if (UNLIKELY(!__kmp_cpuinfo.initialized)) { \ 1081 __kmp_query_cpuid(&__kmp_cpuinfo); \ 1082 } \ 1083 if (__kmp_cpuinfo.flags.sse2) { \ 1084 KMP_MFENCE_(); \ 1085 } 1086 #define KMP_SFENCE() KMP_SFENCE_() 1087 #endif 1088 #else 1089 #define KMP_MFENCE() KMP_MB() 1090 #define KMP_SFENCE() KMP_MB() 1091 #endif 1092 1093 #ifndef KMP_IMB 1094 #define KMP_IMB() /* nothing to do */ 1095 #endif 1096 1097 #ifndef KMP_ST_REL32 1098 #define KMP_ST_REL32(A, D) (*(A) = (D)) 1099 #endif 1100 1101 #ifndef KMP_ST_REL64 1102 #define KMP_ST_REL64(A, D) (*(A) = (D)) 1103 #endif 1104 1105 #ifndef KMP_LD_ACQ32 1106 #define KMP_LD_ACQ32(A) (*(A)) 1107 #endif 1108 1109 #ifndef KMP_LD_ACQ64 1110 #define KMP_LD_ACQ64(A) (*(A)) 1111 #endif 1112 1113 /* ------------------------------------------------------------------------ */ 1114 // FIXME - maybe this should this be 1115 // 1116 // #define TCR_4(a) (*(volatile kmp_int32 *)(&a)) 1117 // #define TCW_4(a,b) (a) = (*(volatile kmp_int32 *)&(b)) 1118 // 1119 // #define TCR_8(a) (*(volatile kmp_int64 *)(a)) 1120 // #define TCW_8(a,b) (a) = (*(volatile kmp_int64 *)(&b)) 1121 // 1122 // I'm fairly certain this is the correct thing to do, but I'm afraid 1123 // of performance regressions. 1124 1125 #define TCR_1(a) (a) 1126 #define TCW_1(a, b) (a) = (b) 1127 #define TCR_4(a) (a) 1128 #define TCW_4(a, b) (a) = (b) 1129 #define TCI_4(a) (++(a)) 1130 #define TCD_4(a) (--(a)) 1131 #define TCR_8(a) (a) 1132 #define TCW_8(a, b) (a) = (b) 1133 #define TCI_8(a) (++(a)) 1134 #define TCD_8(a) (--(a)) 1135 #define TCR_SYNC_4(a) (a) 1136 #define TCW_SYNC_4(a, b) (a) = (b) 1137 #define TCX_SYNC_4(a, b, c) \ 1138 KMP_COMPARE_AND_STORE_REL32((volatile kmp_int32 *)(volatile void *)&(a), \ 1139 (kmp_int32)(b), (kmp_int32)(c)) 1140 #define TCR_SYNC_8(a) (a) 1141 #define TCW_SYNC_8(a, b) (a) = (b) 1142 #define TCX_SYNC_8(a, b, c) \ 1143 KMP_COMPARE_AND_STORE_REL64((volatile kmp_int64 *)(volatile void *)&(a), \ 1144 (kmp_int64)(b), (kmp_int64)(c)) 1145 1146 #if KMP_ARCH_X86 || KMP_ARCH_MIPS 1147 // What about ARM? 1148 #define TCR_PTR(a) ((void *)TCR_4(a)) 1149 #define TCW_PTR(a, b) TCW_4((a), (b)) 1150 #define TCR_SYNC_PTR(a) ((void *)TCR_SYNC_4(a)) 1151 #define TCW_SYNC_PTR(a, b) TCW_SYNC_4((a), (b)) 1152 #define TCX_SYNC_PTR(a, b, c) ((void *)TCX_SYNC_4((a), (b), (c))) 1153 1154 #else /* 64 bit pointers */ 1155 1156 #define TCR_PTR(a) ((void *)TCR_8(a)) 1157 #define TCW_PTR(a, b) TCW_8((a), (b)) 1158 #define TCR_SYNC_PTR(a) ((void *)TCR_SYNC_8(a)) 1159 #define TCW_SYNC_PTR(a, b) TCW_SYNC_8((a), (b)) 1160 #define TCX_SYNC_PTR(a, b, c) ((void *)TCX_SYNC_8((a), (b), (c))) 1161 1162 #endif /* KMP_ARCH_X86 */ 1163 1164 /* If these FTN_{TRUE,FALSE} values change, may need to change several places 1165 where they are used to check that language is Fortran, not C. */ 1166 1167 #ifndef FTN_TRUE 1168 #define FTN_TRUE TRUE 1169 #endif 1170 1171 #ifndef FTN_FALSE 1172 #define FTN_FALSE FALSE 1173 #endif 1174 1175 typedef void (*microtask_t)(int *gtid, int *npr, ...); 1176 1177 #ifdef USE_VOLATILE_CAST 1178 #define VOLATILE_CAST(x) (volatile x) 1179 #else 1180 #define VOLATILE_CAST(x) (x) 1181 #endif 1182 1183 #define KMP_WAIT __kmp_wait_4 1184 #define KMP_WAIT_PTR __kmp_wait_4_ptr 1185 #define KMP_EQ __kmp_eq_4 1186 #define KMP_NEQ __kmp_neq_4 1187 #define KMP_LT __kmp_lt_4 1188 #define KMP_GE __kmp_ge_4 1189 #define KMP_LE __kmp_le_4 1190 1191 /* Workaround for Intel(R) 64 code gen bug when taking address of static array 1192 * (Intel(R) 64 Tracker #138) */ 1193 #if (KMP_ARCH_X86_64 || KMP_ARCH_PPC64) && KMP_OS_LINUX 1194 #define STATIC_EFI2_WORKAROUND 1195 #else 1196 #define STATIC_EFI2_WORKAROUND static 1197 #endif 1198 1199 // Support of BGET usage 1200 #ifndef KMP_USE_BGET 1201 #define KMP_USE_BGET 1 1202 #endif 1203 1204 // Switches for OSS builds 1205 #ifndef USE_CMPXCHG_FIX 1206 #define USE_CMPXCHG_FIX 1 1207 #endif 1208 1209 // Enable dynamic user lock 1210 #define KMP_USE_DYNAMIC_LOCK 1 1211 1212 // Enable Intel(R) Transactional Synchronization Extensions (Intel(R) TSX) if 1213 // dynamic user lock is turned on 1214 #if KMP_USE_DYNAMIC_LOCK 1215 // Visual studio can't handle the asm sections in this code 1216 #define KMP_USE_TSX (KMP_ARCH_X86 || KMP_ARCH_X86_64) && !KMP_COMPILER_MSVC 1217 #ifdef KMP_USE_ADAPTIVE_LOCKS 1218 #undef KMP_USE_ADAPTIVE_LOCKS 1219 #endif 1220 #define KMP_USE_ADAPTIVE_LOCKS KMP_USE_TSX 1221 #endif 1222 1223 // Enable tick time conversion of ticks to seconds 1224 #if KMP_STATS_ENABLED 1225 #define KMP_HAVE_TICK_TIME \ 1226 (KMP_OS_LINUX && (KMP_MIC || KMP_ARCH_X86 || KMP_ARCH_X86_64)) 1227 #endif 1228 1229 // Warning levels 1230 enum kmp_warnings_level { 1231 kmp_warnings_off = 0, /* No warnings */ 1232 kmp_warnings_low, /* Minimal warnings (default) */ 1233 kmp_warnings_explicit = 6, /* Explicitly set to ON - more warnings */ 1234 kmp_warnings_verbose /* reserved */ 1235 }; 1236 1237 #ifdef __cplusplus 1238 } // extern "C" 1239 #endif // __cplusplus 1240 1241 // Safe C API 1242 #include "kmp_safe_c_api.h" 1243 1244 // Macros for C++11 atomic functions 1245 #define KMP_ATOMIC_LD(p, order) (p)->load(std::memory_order_##order) 1246 #define KMP_ATOMIC_OP(op, p, v, order) (p)->op(v, std::memory_order_##order) 1247 1248 // For non-default load/store 1249 #define KMP_ATOMIC_LD_ACQ(p) KMP_ATOMIC_LD(p, acquire) 1250 #define KMP_ATOMIC_LD_RLX(p) KMP_ATOMIC_LD(p, relaxed) 1251 #define KMP_ATOMIC_ST_REL(p, v) KMP_ATOMIC_OP(store, p, v, release) 1252 #define KMP_ATOMIC_ST_RLX(p, v) KMP_ATOMIC_OP(store, p, v, relaxed) 1253 1254 // For non-default fetch_<op> 1255 #define KMP_ATOMIC_ADD(p, v) KMP_ATOMIC_OP(fetch_add, p, v, acq_rel) 1256 #define KMP_ATOMIC_SUB(p, v) KMP_ATOMIC_OP(fetch_sub, p, v, acq_rel) 1257 #define KMP_ATOMIC_AND(p, v) KMP_ATOMIC_OP(fetch_and, p, v, acq_rel) 1258 #define KMP_ATOMIC_OR(p, v) KMP_ATOMIC_OP(fetch_or, p, v, acq_rel) 1259 #define KMP_ATOMIC_INC(p) KMP_ATOMIC_OP(fetch_add, p, 1, acq_rel) 1260 #define KMP_ATOMIC_DEC(p) KMP_ATOMIC_OP(fetch_sub, p, 1, acq_rel) 1261 #define KMP_ATOMIC_ADD_RLX(p, v) KMP_ATOMIC_OP(fetch_add, p, v, relaxed) 1262 #define KMP_ATOMIC_INC_RLX(p) KMP_ATOMIC_OP(fetch_add, p, 1, relaxed) 1263 1264 // Callers of the following functions cannot see the side effect on "expected". 1265 template <typename T> 1266 bool __kmp_atomic_compare_store(std::atomic<T> *p, T expected, T desired) { 1267 return p->compare_exchange_strong( 1268 expected, desired, std::memory_order_acq_rel, std::memory_order_relaxed); 1269 } 1270 1271 template <typename T> 1272 bool __kmp_atomic_compare_store_acq(std::atomic<T> *p, T expected, T desired) { 1273 return p->compare_exchange_strong( 1274 expected, desired, std::memory_order_acquire, std::memory_order_relaxed); 1275 } 1276 1277 template <typename T> 1278 bool __kmp_atomic_compare_store_rel(std::atomic<T> *p, T expected, T desired) { 1279 return p->compare_exchange_strong( 1280 expected, desired, std::memory_order_release, std::memory_order_relaxed); 1281 } 1282 1283 // Symbol lookup on Linux/Windows 1284 #if KMP_OS_WINDOWS 1285 extern void *__kmp_lookup_symbol(const char *name); 1286 #define KMP_DLSYM(name) __kmp_lookup_symbol(name) 1287 #define KMP_DLSYM_NEXT(name) nullptr 1288 #else 1289 #define KMP_DLSYM(name) dlsym(RTLD_DEFAULT, name) 1290 #define KMP_DLSYM_NEXT(name) dlsym(RTLD_NEXT, name) 1291 #endif 1292 1293 #endif /* KMP_OS_H */ 1294