1 | /* include/jemalloc/internal/jemalloc_internal_defs.h. Generated from jemalloc_internal_defs.h.in by configure. */ |
2 | #ifndef JEMALLOC_INTERNAL_DEFS_H_ |
3 | #define JEMALLOC_INTERNAL_DEFS_H_ |
4 | /* |
5 | * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all |
6 | * public APIs to be prefixed. This makes it possible, with some care, to use |
7 | * multiple allocators simultaneously. |
8 | */ |
9 | #define JEMALLOC_PREFIX "je_" |
10 | #define JEMALLOC_CPREFIX "JE_" |
11 | |
12 | /* |
13 | * Define overrides for non-standard allocator-related functions if they are |
14 | * present on the system. |
15 | */ |
16 | /* #undef JEMALLOC_OVERRIDE___LIBC_CALLOC */ |
17 | /* #undef JEMALLOC_OVERRIDE___LIBC_FREE */ |
18 | /* #undef JEMALLOC_OVERRIDE___LIBC_MALLOC */ |
19 | /* #undef JEMALLOC_OVERRIDE___LIBC_MEMALIGN */ |
20 | /* #undef JEMALLOC_OVERRIDE___LIBC_REALLOC */ |
21 | /* #undef JEMALLOC_OVERRIDE___LIBC_VALLOC */ |
22 | /* #undef JEMALLOC_OVERRIDE___POSIX_MEMALIGN */ |
23 | |
24 | /* |
25 | * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs. |
26 | * For shared libraries, symbol visibility mechanisms prevent these symbols |
27 | * from being exported, but for static libraries, naming collisions are a real |
28 | * possibility. |
29 | */ |
30 | #define JEMALLOC_PRIVATE_NAMESPACE je_ |
31 | |
32 | /* |
33 | * Hyper-threaded CPUs may need a special instruction inside spin loops in |
34 | * order to yield to another virtual CPU. |
35 | */ |
36 | #define CPU_SPINWAIT __asm__ volatile("pause") |
37 | /* 1 if CPU_SPINWAIT is defined, 0 otherwise. */ |
38 | #define HAVE_CPU_SPINWAIT 1 |
39 | |
40 | /* |
41 | * Number of significant bits in virtual addresses. This may be less than the |
42 | * total number of bits in a pointer, e.g. on x64, for which the uppermost 16 |
43 | * bits are the same as bit 47. |
44 | */ |
45 | #define LG_VADDR 48 |
46 | |
47 | /* Defined if C11 atomics are available. */ |
48 | /* #undef JEMALLOC_C11_ATOMICS */ |
49 | |
50 | /* Defined if GCC __atomic atomics are available. */ |
51 | #define JEMALLOC_GCC_ATOMIC_ATOMICS 1 |
52 | /* and the 8-bit variant support. */ |
53 | #define JEMALLOC_GCC_U8_ATOMIC_ATOMICS 1 |
54 | |
55 | /* Defined if GCC __sync atomics are available. */ |
56 | #define JEMALLOC_GCC_SYNC_ATOMICS 1 |
57 | /* and the 8-bit variant support. */ |
58 | #define JEMALLOC_GCC_U8_SYNC_ATOMICS 1 |
59 | |
60 | /* |
61 | * Defined if __builtin_clz() and __builtin_clzl() are available. |
62 | */ |
63 | #define JEMALLOC_HAVE_BUILTIN_CLZ |
64 | |
65 | /* |
66 | * Defined if os_unfair_lock_*() functions are available, as provided by Darwin. |
67 | */ |
68 | /* #undef JEMALLOC_OS_UNFAIR_LOCK */ |
69 | |
70 | /* Defined if syscall(2) is usable. */ |
71 | #define JEMALLOC_USE_SYSCALL |
72 | |
73 | /* |
74 | * Defined if secure_getenv(3) is available. |
75 | */ |
76 | #define JEMALLOC_HAVE_SECURE_GETENV |
77 | |
78 | /* |
79 | * Defined if issetugid(2) is available. |
80 | */ |
81 | /* #undef JEMALLOC_HAVE_ISSETUGID */ |
82 | |
83 | /* Defined if pthread_atfork(3) is available. */ |
84 | #define JEMALLOC_HAVE_PTHREAD_ATFORK |
85 | |
86 | /* Defined if pthread_setname_np(3) is available. */ |
87 | #define JEMALLOC_HAVE_PTHREAD_SETNAME_NP |
88 | |
89 | /* |
90 | * Defined if clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is available. |
91 | */ |
92 | #define JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE 1 |
93 | |
94 | /* |
95 | * Defined if clock_gettime(CLOCK_MONOTONIC, ...) is available. |
96 | */ |
97 | #define JEMALLOC_HAVE_CLOCK_MONOTONIC 1 |
98 | |
99 | /* |
100 | * Defined if mach_absolute_time() is available. |
101 | */ |
102 | /* #undef JEMALLOC_HAVE_MACH_ABSOLUTE_TIME */ |
103 | |
104 | /* |
105 | * Defined if _malloc_thread_cleanup() exists. At least in the case of |
106 | * FreeBSD, pthread_key_create() allocates, which if used during malloc |
107 | * bootstrapping will cause recursion into the pthreads library. Therefore, if |
108 | * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in |
109 | * malloc_tsd. |
110 | */ |
111 | /* #undef JEMALLOC_MALLOC_THREAD_CLEANUP */ |
112 | |
113 | /* |
114 | * Defined if threaded initialization is known to be safe on this platform. |
115 | * Among other things, it must be possible to initialize a mutex without |
116 | * triggering allocation in order for threaded allocation to be safe. |
117 | */ |
118 | #define JEMALLOC_THREADED_INIT |
119 | |
120 | /* |
121 | * Defined if the pthreads implementation defines |
122 | * _pthread_mutex_init_calloc_cb(), in which case the function is used in order |
123 | * to avoid recursive allocation during mutex initialization. |
124 | */ |
125 | /* #undef JEMALLOC_MUTEX_INIT_CB */ |
126 | |
127 | /* Non-empty if the tls_model attribute is supported. */ |
128 | #define JEMALLOC_TLS_MODEL __attribute__((tls_model("initial-exec"))) |
129 | |
130 | /* |
131 | * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables |
132 | * inline functions. |
133 | */ |
134 | /* #undef JEMALLOC_DEBUG */ |
135 | |
136 | /* JEMALLOC_STATS enables statistics calculation. */ |
137 | #define JEMALLOC_STATS |
138 | |
139 | /* JEMALLOC_EXPERIMENTAL_SMALLOCX_API enables experimental smallocx API. */ |
140 | /* #undef JEMALLOC_EXPERIMENTAL_SMALLOCX_API */ |
141 | |
142 | /* JEMALLOC_PROF enables allocation profiling. */ |
143 | /* #undef JEMALLOC_PROF */ |
144 | |
145 | /* Use libunwind for profile backtracing if defined. */ |
146 | /* #undef JEMALLOC_PROF_LIBUNWIND */ |
147 | |
148 | /* Use libgcc for profile backtracing if defined. */ |
149 | /* #undef JEMALLOC_PROF_LIBGCC */ |
150 | |
151 | /* Use gcc intrinsics for profile backtracing if defined. */ |
152 | /* #undef JEMALLOC_PROF_GCC */ |
153 | |
154 | /* |
155 | * JEMALLOC_DSS enables use of sbrk(2) to allocate extents from the data storage |
156 | * segment (DSS). |
157 | */ |
158 | #define JEMALLOC_DSS |
159 | |
160 | /* Support memory filling (junk/zero). */ |
161 | #define JEMALLOC_FILL |
162 | |
163 | /* Support utrace(2)-based tracing. */ |
164 | /* #undef JEMALLOC_UTRACE */ |
165 | |
166 | /* Support optional abort() on OOM. */ |
167 | /* #undef JEMALLOC_XMALLOC */ |
168 | |
169 | /* Support lazy locking (avoid locking unless a second thread is launched). */ |
170 | /* #undef JEMALLOC_LAZY_LOCK */ |
171 | |
172 | /* |
173 | * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size |
174 | * classes). |
175 | */ |
176 | #define LG_QUANTUM 3 |
177 | |
178 | /* One page is 2^LG_PAGE bytes. */ |
179 | #define LG_PAGE 12 |
180 | |
181 | /* |
182 | * One huge page is 2^LG_HUGEPAGE bytes. Note that this is defined even if the |
183 | * system does not explicitly support huge pages; system calls that require |
184 | * explicit huge page support are separately configured. |
185 | */ |
186 | #define LG_HUGEPAGE 21 |
187 | |
188 | /* |
189 | * If defined, adjacent virtual memory mappings with identical attributes |
190 | * automatically coalesce, and they fragment when changes are made to subranges. |
191 | * This is the normal order of things for mmap()/munmap(), but on Windows |
192 | * VirtualAlloc()/VirtualFree() operations must be precisely matched, i.e. |
193 | * mappings do *not* coalesce/fragment. |
194 | */ |
195 | #define JEMALLOC_MAPS_COALESCE |
196 | |
197 | /* |
198 | * If defined, retain memory for later reuse by default rather than using e.g. |
199 | * munmap() to unmap freed extents. This is enabled on 64-bit Linux because |
200 | * common sequences of mmap()/munmap() calls will cause virtual memory map |
201 | * holes. |
202 | */ |
203 | #define JEMALLOC_RETAIN |
204 | |
205 | /* TLS is used to map arenas and magazine caches to threads. */ |
206 | #define JEMALLOC_TLS |
207 | |
208 | /* |
209 | * Used to mark unreachable code to quiet "end of non-void" compiler warnings. |
210 | * Don't use this directly; instead use unreachable() from util.h |
211 | */ |
212 | #define JEMALLOC_INTERNAL_UNREACHABLE __builtin_unreachable |
213 | |
214 | /* |
215 | * ffs*() functions to use for bitmapping. Don't use these directly; instead, |
216 | * use ffs_*() from util.h. |
217 | */ |
218 | #define JEMALLOC_INTERNAL_FFSLL __builtin_ffsll |
219 | #define JEMALLOC_INTERNAL_FFSL __builtin_ffsl |
220 | #define JEMALLOC_INTERNAL_FFS __builtin_ffs |
221 | |
222 | /* |
223 | * popcount*() functions to use for bitmapping. |
224 | */ |
225 | #define JEMALLOC_INTERNAL_POPCOUNTL __builtin_popcountl |
226 | #define JEMALLOC_INTERNAL_POPCOUNT __builtin_popcount |
227 | |
228 | /* |
229 | * If defined, explicitly attempt to more uniformly distribute large allocation |
230 | * pointer alignments across all cache indices. |
231 | */ |
232 | #define JEMALLOC_CACHE_OBLIVIOUS |
233 | |
234 | /* |
235 | * If defined, enable logging facilities. We make this a configure option to |
236 | * avoid taking extra branches everywhere. |
237 | */ |
238 | /* #undef JEMALLOC_LOG */ |
239 | |
240 | /* |
241 | * If defined, use readlinkat() (instead of readlink()) to follow |
242 | * /etc/malloc_conf. |
243 | */ |
244 | /* #undef JEMALLOC_READLINKAT */ |
245 | |
246 | /* |
247 | * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. |
248 | */ |
249 | /* #undef JEMALLOC_ZONE */ |
250 | |
251 | /* |
252 | * Methods for determining whether the OS overcommits. |
253 | * JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY: Linux's |
254 | * /proc/sys/vm.overcommit_memory file. |
255 | * JEMALLOC_SYSCTL_VM_OVERCOMMIT: FreeBSD's vm.overcommit sysctl. |
256 | */ |
257 | /* #undef JEMALLOC_SYSCTL_VM_OVERCOMMIT */ |
258 | #define JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY |
259 | |
260 | /* Defined if madvise(2) is available. */ |
261 | #define JEMALLOC_HAVE_MADVISE |
262 | |
263 | /* |
264 | * Defined if transparent huge pages are supported via the MADV_[NO]HUGEPAGE |
265 | * arguments to madvise(2). |
266 | */ |
267 | #define JEMALLOC_HAVE_MADVISE_HUGE |
268 | |
269 | /* |
270 | * Methods for purging unused pages differ between operating systems. |
271 | * |
272 | * madvise(..., MADV_FREE) : This marks pages as being unused, such that they |
273 | * will be discarded rather than swapped out. |
274 | * madvise(..., MADV_DONTNEED) : If JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS is |
275 | * defined, this immediately discards pages, |
276 | * such that new pages will be demand-zeroed if |
277 | * the address region is later touched; |
278 | * otherwise this behaves similarly to |
279 | * MADV_FREE, though typically with higher |
280 | * system overhead. |
281 | */ |
282 | #define JEMALLOC_PURGE_MADVISE_FREE |
283 | #define JEMALLOC_PURGE_MADVISE_DONTNEED |
284 | #define JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS |
285 | |
286 | /* Defined if madvise(2) is available but MADV_FREE is not (x86 Linux only). */ |
287 | /* #undef JEMALLOC_DEFINE_MADVISE_FREE */ |
288 | |
289 | /* |
290 | * Defined if MADV_DO[NT]DUMP is supported as an argument to madvise. |
291 | */ |
292 | #define JEMALLOC_MADVISE_DONTDUMP |
293 | |
294 | /* |
295 | * Defined if transparent huge pages (THPs) are supported via the |
296 | * MADV_[NO]HUGEPAGE arguments to madvise(2), and THP support is enabled. |
297 | */ |
298 | /* #undef JEMALLOC_THP */ |
299 | |
300 | /* Define if operating system has alloca.h header. */ |
301 | #define JEMALLOC_HAS_ALLOCA_H 1 |
302 | |
303 | /* C99 restrict keyword supported. */ |
304 | #define JEMALLOC_HAS_RESTRICT 1 |
305 | |
306 | /* For use by hash code. */ |
307 | /* #undef JEMALLOC_BIG_ENDIAN */ |
308 | |
309 | /* sizeof(int) == 2^LG_SIZEOF_INT. */ |
310 | #define LG_SIZEOF_INT 2 |
311 | |
312 | /* sizeof(long) == 2^LG_SIZEOF_LONG. */ |
313 | #define LG_SIZEOF_LONG 3 |
314 | |
315 | /* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */ |
316 | #define LG_SIZEOF_LONG_LONG 3 |
317 | |
318 | /* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ |
319 | #define LG_SIZEOF_INTMAX_T 3 |
320 | |
321 | /* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */ |
322 | /* #undef JEMALLOC_GLIBC_MALLOC_HOOK */ |
323 | |
324 | /* glibc memalign hook. */ |
325 | /* #undef JEMALLOC_GLIBC_MEMALIGN_HOOK */ |
326 | |
327 | /* pthread support */ |
328 | #define JEMALLOC_HAVE_PTHREAD |
329 | |
330 | /* dlsym() support */ |
331 | #define JEMALLOC_HAVE_DLSYM |
332 | |
333 | /* Adaptive mutex support in pthreads. */ |
334 | #define JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP |
335 | |
336 | /* GNU specific sched_getcpu support */ |
337 | #define JEMALLOC_HAVE_SCHED_GETCPU |
338 | |
339 | /* GNU specific sched_setaffinity support */ |
340 | #define JEMALLOC_HAVE_SCHED_SETAFFINITY |
341 | |
342 | /* |
343 | * If defined, all the features necessary for background threads are present. |
344 | */ |
345 | #define JEMALLOC_BACKGROUND_THREAD 1 |
346 | |
347 | /* |
348 | * If defined, jemalloc symbols are not exported (doesn't work when |
349 | * JEMALLOC_PREFIX is not defined). |
350 | */ |
351 | /* #undef JEMALLOC_EXPORT */ |
352 | |
353 | /* config.malloc_conf options string. */ |
354 | #define JEMALLOC_CONFIG_MALLOC_CONF "" |
355 | |
356 | /* If defined, jemalloc takes the malloc/free/etc. symbol names. */ |
357 | /* #undef JEMALLOC_IS_MALLOC */ |
358 | |
359 | /* |
360 | * Defined if strerror_r returns char * if _GNU_SOURCE is defined. |
361 | */ |
362 | #define JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE |
363 | |
364 | /* Performs additional safety checks when defined. */ |
365 | /* #undef JEMALLOC_OPT_SAFETY_CHECKS */ |
366 | |
367 | #endif /* JEMALLOC_INTERNAL_DEFS_H_ */ |
368 | |