1 /* Include cdefs to see if __BIONIC__ is set */ 2 #include <sys/cdefs.h> 3 #if !defined(__BIONIC__) 4 #include "jemalloc_internal_defs_host.h" 5 #else 6 /* include/jemalloc/internal/jemalloc_internal_defs.h. Generated from jemalloc_internal_defs.h.in by configure. */ 7 #ifndef JEMALLOC_INTERNAL_DEFS_H_ 8 #define JEMALLOC_INTERNAL_DEFS_H_ 9 /* 10 * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all 11 * public APIs to be prefixed. This makes it possible, with some care, to use 12 * multiple allocators simultaneously. 13 */ 14 #define JEMALLOC_PREFIX "je_" 15 #define JEMALLOC_CPREFIX "JE_" 16 17 /* 18 * Define overrides for non-standard allocator-related functions if they are 19 * present on the system. 20 */ 21 /* #undef JEMALLOC_OVERRIDE___LIBC_CALLOC */ 22 /* #undef JEMALLOC_OVERRIDE___LIBC_FREE */ 23 /* #undef JEMALLOC_OVERRIDE___LIBC_MALLOC */ 24 /* #undef JEMALLOC_OVERRIDE___LIBC_MEMALIGN */ 25 /* #undef JEMALLOC_OVERRIDE___LIBC_REALLOC */ 26 /* #undef JEMALLOC_OVERRIDE___LIBC_VALLOC */ 27 /* #undef JEMALLOC_OVERRIDE___POSIX_MEMALIGN */ 28 29 /* 30 * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs. 31 * For shared libraries, symbol visibility mechanisms prevent these symbols 32 * from being exported, but for static libraries, naming collisions are a real 33 * possibility. 34 */ 35 #define JEMALLOC_PRIVATE_NAMESPACE je_ 36 37 /* 38 * Hyper-threaded CPUs may need a special instruction inside spin loops in 39 * order to yield to another virtual CPU. 40 */ 41 #if defined(__x86_64__) 42 #define CPU_SPINWAIT __asm__ volatile("pause") 43 /* 1 if CPU_SPINWAIT is defined, 0 otherwise. */ 44 #define HAVE_CPU_SPINWAIT 1 45 #else 46 #define CPU_SPINWAIT 47 /* 1 if CPU_SPINWAIT is defined, 0 otherwise. */ 48 #define HAVE_CPU_SPINWAIT 0 49 #endif 50 51 /* 52 * Number of significant bits in virtual addresses. This may be less than the 53 * total number of bits in a pointer, e.g. on x64, for which the uppermost 16 54 * bits are the same as bit 47. 55 */ 56 #if defined(__x86_64__) 57 #define LG_VADDR 57 58 #elif defined(__LP64__) 59 #define LG_VADDR 48 60 #else 61 #define LG_VADDR 32 62 #endif 63 64 /* Defined if C11 atomics are available. */ 65 #define JEMALLOC_C11_ATOMICS 1 66 67 /* Defined if GCC __atomic atomics are available. */ 68 #define JEMALLOC_GCC_ATOMIC_ATOMICS 1 69 70 /* Defined if GCC __sync atomics are available. */ 71 #define JEMALLOC_GCC_SYNC_ATOMICS 1 72 73 /* 74 * Defined if __sync_add_and_fetch(uint32_t *, uint32_t) and 75 * __sync_sub_and_fetch(uint32_t *, uint32_t) are available, despite 76 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 not being defined (which means the 77 * functions are defined in libgcc instead of being inlines). 78 */ 79 /* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_4 */ 80 81 /* 82 * Defined if __sync_add_and_fetch(uint64_t *, uint64_t) and 83 * __sync_sub_and_fetch(uint64_t *, uint64_t) are available, despite 84 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 not being defined (which means the 85 * functions are defined in libgcc instead of being inlines). 86 */ 87 /* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_8 */ 88 89 /* 90 * Defined if __builtin_clz() and __builtin_clzl() are available. 91 */ 92 #define JEMALLOC_HAVE_BUILTIN_CLZ 93 94 /* 95 * Defined if os_unfair_lock_*() functions are available, as provided by Darwin. 96 */ 97 /* #undef JEMALLOC_OS_UNFAIR_LOCK */ 98 99 /* 100 * Defined if OSSpin*() functions are available, as provided by Darwin, and 101 * documented in the spinlock(3) manual page. 102 */ 103 /* #undef JEMALLOC_OSSPIN */ 104 105 /* Defined if syscall(2) is usable. */ 106 #define JEMALLOC_USE_SYSCALL 107 108 /* 109 * Defined if secure_getenv(3) is available. 110 */ 111 /* #undef JEMALLOC_HAVE_SECURE_GETENV */ 112 113 /* 114 * Defined if issetugid(2) is available. 115 */ 116 /* #undef JEMALLOC_HAVE_ISSETUGID */ 117 118 /* Defined if pthread_atfork(3) is available. */ 119 #define JEMALLOC_HAVE_PTHREAD_ATFORK 120 121 /* Defined if pthread_setname_np(3) is available. */ 122 #define JEMALLOC_HAVE_PTHREAD_SETNAME_NP 123 124 /* 125 * Defined if clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is available. 126 */ 127 #define JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE 1 128 129 /* 130 * Defined if clock_gettime(CLOCK_MONOTONIC, ...) is available. 131 */ 132 #define JEMALLOC_HAVE_CLOCK_MONOTONIC 1 133 134 /* 135 * Defined if mach_absolute_time() is available. 136 */ 137 /* #undef JEMALLOC_HAVE_MACH_ABSOLUTE_TIME */ 138 139 /* 140 * Defined if _malloc_thread_cleanup() exists. At least in the case of 141 * FreeBSD, pthread_key_create() allocates, which if used during malloc 142 * bootstrapping will cause recursion into the pthreads library. Therefore, if 143 * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in 144 * malloc_tsd. 145 */ 146 /* #undef JEMALLOC_MALLOC_THREAD_CLEANUP */ 147 148 /* 149 * Defined if threaded initialization is known to be safe on this platform. 150 * Among other things, it must be possible to initialize a mutex without 151 * triggering allocation in order for threaded allocation to be safe. 152 */ 153 #define JEMALLOC_THREADED_INIT 154 155 /* 156 * Defined if the pthreads implementation defines 157 * _pthread_mutex_init_calloc_cb(), in which case the function is used in order 158 * to avoid recursive allocation during mutex initialization. 159 */ 160 /* #undef JEMALLOC_MUTEX_INIT_CB */ 161 162 /* Non-empty if the tls_model attribute is supported. */ 163 #define JEMALLOC_TLS_MODEL __attribute__((tls_model("initial-exec"))) 164 165 /* 166 * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables 167 * inline functions. 168 */ 169 /* #undef JEMALLOC_DEBUG */ 170 171 /* JEMALLOC_STATS enables statistics calculation. */ 172 #define JEMALLOC_STATS 173 174 /* JEMALLOC_PROF enables allocation profiling. */ 175 /* #undef JEMALLOC_PROF */ 176 177 /* Use libunwind for profile backtracing if defined. */ 178 /* #undef JEMALLOC_PROF_LIBUNWIND */ 179 180 /* Use libgcc for profile backtracing if defined. */ 181 /* #undef JEMALLOC_PROF_LIBGCC */ 182 183 /* Use gcc intrinsics for profile backtracing if defined. */ 184 /* #undef JEMALLOC_PROF_GCC */ 185 186 /* 187 * JEMALLOC_DSS enables use of sbrk(2) to allocate extents from the data storage 188 * segment (DSS). 189 */ 190 /* #undef JEMALLOC_DSS */ 191 192 /* Support memory filling (junk/zero). */ 193 #define JEMALLOC_FILL 194 195 /* Support utrace(2)-based tracing. */ 196 /* #undef JEMALLOC_UTRACE */ 197 198 /* Support optional abort() on OOM. */ 199 /* #undef JEMALLOC_XMALLOC */ 200 201 /* Support lazy locking (avoid locking unless a second thread is launched). */ 202 /* #undef JEMALLOC_LAZY_LOCK */ 203 204 /* 205 * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size 206 * classes). 207 */ 208 /* #undef LG_QUANTUM */ 209 210 /* One page is 2^LG_PAGE bytes. */ 211 #define LG_PAGE 12 212 213 /* 214 * One huge page is 2^LG_HUGEPAGE bytes. Note that this is defined even if the 215 * system does not explicitly support huge pages; system calls that require 216 * explicit huge page support are separately configured. 217 */ 218 /* ANDROID NOTE: This determines how big a default map'd page is. */ 219 #if !defined(__LP64__) 220 #define LG_HUGEPAGE 20 221 #else 222 #define LG_HUGEPAGE 21 223 #endif 224 225 /* 226 * If defined, adjacent virtual memory mappings with identical attributes 227 * automatically coalesce, and they fragment when changes are made to subranges. 228 * This is the normal order of things for mmap()/munmap(), but on Windows 229 * VirtualAlloc()/VirtualFree() operations must be precisely matched, i.e. 230 * mappings do *not* coalesce/fragment. 231 */ 232 #define JEMALLOC_MAPS_COALESCE 233 234 /* 235 * If defined, retain memory for later reuse by default rather than using e.g. 236 * munmap() to unmap freed extents. This is enabled on 64-bit Linux because 237 * common sequences of mmap()/munmap() calls will cause virtual memory map 238 * holes. 239 */ 240 #define JEMALLOC_RETAIN 241 242 /* TLS is used to map arenas and magazine caches to threads. */ 243 /* #undef JEMALLOC_TLS */ 244 245 /* 246 * Used to mark unreachable code to quiet "end of non-void" compiler warnings. 247 * Don't use this directly; instead use unreachable() from util.h 248 */ 249 #define JEMALLOC_INTERNAL_UNREACHABLE __builtin_unreachable 250 251 /* 252 * ffs*() functions to use for bitmapping. Don't use these directly; instead, 253 * use ffs_*() from util.h. 254 */ 255 #define JEMALLOC_INTERNAL_FFSLL __builtin_ffsll 256 #define JEMALLOC_INTERNAL_FFSL __builtin_ffsl 257 #define JEMALLOC_INTERNAL_FFS __builtin_ffs 258 259 /* 260 * If defined, explicitly attempt to more uniformly distribute large allocation 261 * pointer alignments across all cache indices. 262 */ 263 #define JEMALLOC_CACHE_OBLIVIOUS 264 265 /* 266 * If defined, enable logging facilities. We make this a configure option to 267 * avoid taking extra branches everywhere. 268 */ 269 /* #undef JEMALLOC_LOG */ 270 271 /* 272 * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. 273 */ 274 /* #undef JEMALLOC_ZONE */ 275 276 /* 277 * Methods for determining whether the OS overcommits. 278 * JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY: Linux's 279 * /proc/sys/vm.overcommit_memory file. 280 * JEMALLOC_SYSCTL_VM_OVERCOMMIT: FreeBSD's vm.overcommit sysctl. 281 */ 282 /* #undef JEMALLOC_SYSCTL_VM_OVERCOMMIT */ 283 #define JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY 284 285 /* Defined if madvise(2) is available. */ 286 #define JEMALLOC_HAVE_MADVISE 287 288 /* 289 * Defined if transparent huge pages are supported via the MADV_[NO]HUGEPAGE 290 * arguments to madvise(2). 291 */ 292 #define JEMALLOC_HAVE_MADVISE_HUGE 293 294 /* 295 * Methods for purging unused pages differ between operating systems. 296 * 297 * madvise(..., MADV_FREE) : This marks pages as being unused, such that they 298 * will be discarded rather than swapped out. 299 * madvise(..., MADV_DONTNEED) : If JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS is 300 * defined, this immediately discards pages, 301 * such that new pages will be demand-zeroed if 302 * the address region is later touched; 303 * otherwise this behaves similarly to 304 * MADV_FREE, though typically with higher 305 * system overhead. 306 */ 307 /* MADV_FREE available since kernel 4.5 but not all devices support this yet. */ 308 /* #undef JEMALLOC_PURGE_MADVISE_FREE */ 309 #define JEMALLOC_PURGE_MADVISE_DONTNEED 310 #define JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS 311 312 /* Defined if madvise(2) is available but MADV_FREE is not (x86 Linux only). */ 313 #define JEMALLOC_DEFINE_MADVISE_FREE 314 315 /* 316 * Defined if MADV_DO[NT]DUMP is supported as an argument to madvise. 317 */ 318 #define JEMALLOC_MADVISE_DONTDUMP 319 320 /* 321 * Defined if transparent huge pages (THPs) are supported via the 322 * MADV_[NO]HUGEPAGE arguments to madvise(2), and THP support is enabled. 323 */ 324 /* #undef JEMALLOC_THP */ 325 326 /* Define if operating system has alloca.h header. */ 327 #define JEMALLOC_HAS_ALLOCA_H 1 328 329 /* C99 restrict keyword supported. */ 330 #define JEMALLOC_HAS_RESTRICT 1 331 332 /* For use by hash code. */ 333 /* #undef JEMALLOC_BIG_ENDIAN */ 334 335 /* sizeof(int) == 2^LG_SIZEOF_INT. */ 336 #define LG_SIZEOF_INT 2 337 338 /* sizeof(long) == 2^LG_SIZEOF_LONG. */ 339 #ifdef __LP64__ 340 #define LG_SIZEOF_LONG 3 341 #else 342 #define LG_SIZEOF_LONG 2 343 #endif 344 345 /* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */ 346 #define LG_SIZEOF_LONG_LONG 3 347 348 /* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ 349 #define LG_SIZEOF_INTMAX_T 3 350 351 /* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */ 352 /* #undef JEMALLOC_GLIBC_MALLOC_HOOK */ 353 354 /* glibc memalign hook. */ 355 /* #undef JEMALLOC_GLIBC_MEMALIGN_HOOK */ 356 357 /* pthread support */ 358 #define JEMALLOC_HAVE_PTHREAD 359 360 /* dlsym() support */ 361 #define JEMALLOC_HAVE_DLSYM 362 363 /* Adaptive mutex support in pthreads. */ 364 /* #undef JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP */ 365 366 /* GNU specific sched_getcpu support */ 367 #define JEMALLOC_HAVE_SCHED_GETCPU 368 369 /* GNU specific sched_setaffinity support */ 370 #define JEMALLOC_HAVE_SCHED_SETAFFINITY 371 372 /* 373 * If defined, all the features necessary for background threads are present. 374 */ 375 /* #undef JEMALLOC_BACKGROUND_THREAD */ 376 377 /* 378 * If defined, jemalloc symbols are not exported (doesn't work when 379 * JEMALLOC_PREFIX is not defined). 380 */ 381 /* #undef JEMALLOC_EXPORT */ 382 383 /* config.malloc_conf options string. */ 384 #define JEMALLOC_CONFIG_MALLOC_CONF "" 385 386 /* If defined, jemalloc takes the malloc/free/etc. symbol names. */ 387 /* #undef JEMALLOC_IS_MALLOC */ 388 389 /* 390 * Defined if strerror_r returns char * if _GNU_SOURCE is defined. 391 */ 392 #define JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE 393 394 #endif /* JEMALLOC_INTERNAL_DEFS_H_ */ 395 #endif 396
