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 "jem_"
10#define JEMALLOC_CPREFIX "JEM_"
11
12/*
13 * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs.
14 * For shared libraries, symbol visibility mechanisms prevent these symbols
15 * from being exported, but for static libraries, naming collisions are a real
16 * possibility.
17 */
18#define JEMALLOC_PRIVATE_NAMESPACE je_
19
20/*
21 * Hyper-threaded CPUs may need a special instruction inside spin loops in
22 * order to yield to another virtual CPU.
23 */
24#define CPU_SPINWAIT __asm__ volatile("pause")
25
26/* Defined if C11 atomics are available. */
27/* #undef JEMALLOC_C11ATOMICS */
28
29/* Defined if the equivalent of FreeBSD's atomic(9) functions are available. */
30/* #undef JEMALLOC_ATOMIC9 */
31
32/*
33 * Defined if OSAtomic*() functions are available, as provided by Darwin, and
34 * documented in the atomic(3) manual page.
35 */
36/* #undef JEMALLOC_OSATOMIC */
37
38/*
39 * Defined if __sync_add_and_fetch(uint32_t *, uint32_t) and
40 * __sync_sub_and_fetch(uint32_t *, uint32_t) are available, despite
41 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 not being defined (which means the
42 * functions are defined in libgcc instead of being inlines).
43 */
44/* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_4 */
45
46/*
47 * Defined if __sync_add_and_fetch(uint64_t *, uint64_t) and
48 * __sync_sub_and_fetch(uint64_t *, uint64_t) are available, despite
49 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 not being defined (which means the
50 * functions are defined in libgcc instead of being inlines).
51 */
52/* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_8 */
53
54/*
55 * Defined if __builtin_clz() and __builtin_clzl() are available.
56 */
57#define JEMALLOC_HAVE_BUILTIN_CLZ
58
59/*
60 * Defined if madvise(2) is available.
61 */
62#define JEMALLOC_HAVE_MADVISE
63
64/*
65 * Defined if OSSpin*() functions are available, as provided by Darwin, and
66 * documented in the spinlock(3) manual page.
67 */
68/* #undef JEMALLOC_OSSPIN */
69
70/*
71 * Defined if secure_getenv(3) is available.
72 */
73#define JEMALLOC_HAVE_SECURE_GETENV
74
75/*
76 * Defined if issetugid(2) is available.
77 */
78/* #undef JEMALLOC_HAVE_ISSETUGID */
79
80/*
81 * Defined if _malloc_thread_cleanup() exists. At least in the case of
82 * FreeBSD, pthread_key_create() allocates, which if used during malloc
83 * bootstrapping will cause recursion into the pthreads library. Therefore, if
84 * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in
85 * malloc_tsd.
86 */
87/* #undef JEMALLOC_MALLOC_THREAD_CLEANUP */
88
89/*
90 * Defined if threaded initialization is known to be safe on this platform.
91 * Among other things, it must be possible to initialize a mutex without
92 * triggering allocation in order for threaded allocation to be safe.
93 */
94#define JEMALLOC_THREADED_INIT
95
96/*
97 * Defined if the pthreads implementation defines
98 * _pthread_mutex_init_calloc_cb(), in which case the function is used in order
99 * to avoid recursive allocation during mutex initialization.
100 */
101/* #undef JEMALLOC_MUTEX_INIT_CB */
102
103/* Non-empty if the tls_model attribute is supported. */
104#define JEMALLOC_TLS_MODEL __attribute__((tls_model("initial-exec")))
105
106/* JEMALLOC_CC_SILENCE enables code that silences unuseful compiler warnings. */
107#define JEMALLOC_CC_SILENCE
108
109/* JEMALLOC_CODE_COVERAGE enables test code coverage analysis. */
110/* #undef JEMALLOC_CODE_COVERAGE */
111
112/*
113 * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
114 * inline functions.
115 */
116/* #undef JEMALLOC_DEBUG */
117
118/* JEMALLOC_STATS enables statistics calculation. */
119#define JEMALLOC_STATS
120
121/* JEMALLOC_PROF enables allocation profiling. */
122/* #undef JEMALLOC_PROF */
123
124/* Use libunwind for profile backtracing if defined. */
125/* #undef JEMALLOC_PROF_LIBUNWIND */
126
127/* Use libgcc for profile backtracing if defined. */
128/* #undef JEMALLOC_PROF_LIBGCC */
129
130/* Use gcc intrinsics for profile backtracing if defined. */
131/* #undef JEMALLOC_PROF_GCC */
132
133/*
134 * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects.
135 * This makes it possible to allocate/deallocate objects without any locking
136 * when the cache is in the steady state.
137 */
138#define JEMALLOC_TCACHE
139
140/*
141 * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage
142 * segment (DSS).
143 */
144#define JEMALLOC_DSS
145
146/* Support memory filling (junk/zero/quarantine/redzone). */
147#define JEMALLOC_FILL
148
149/* Support utrace(2)-based tracing. */
150/* #undef JEMALLOC_UTRACE */
151
152/* Support Valgrind. */
153/* #undef JEMALLOC_VALGRIND */
154
155/* Support optional abort() on OOM. */
156/* #undef JEMALLOC_XMALLOC */
157
158/* Support lazy locking (avoid locking unless a second thread is launched). */
159/* #undef JEMALLOC_LAZY_LOCK */
160
161/* Minimum size class to support is 2^LG_TINY_MIN bytes. */
162#define LG_TINY_MIN 3
163
164/*
165 * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size
166 * classes).
167 */
168/* #undef LG_QUANTUM */
169
170/* One page is 2^LG_PAGE bytes. */
171#define LG_PAGE 12
172
173/*
174 * If defined, adjacent virtual memory mappings with identical attributes
175 * automatically coalesce, and they fragment when changes are made to subranges.
176 * This is the normal order of things for mmap()/munmap(), but on Windows
177 * VirtualAlloc()/VirtualFree() operations must be precisely matched, i.e.
178 * mappings do *not* coalesce/fragment.
179 */
180#define JEMALLOC_MAPS_COALESCE
181
182/*
183 * If defined, use munmap() to unmap freed chunks, rather than storing them for
184 * later reuse. This is disabled by default on Linux because common sequences
185 * of mmap()/munmap() calls will cause virtual memory map holes.
186 */
187/* #undef JEMALLOC_MUNMAP */
188
189/* TLS is used to map arenas and magazine caches to threads. */
190#define JEMALLOC_TLS
191
192/*
193 * ffs*() functions to use for bitmapping. Don't use these directly; instead,
194 * use ffs_*() from util.h.
195 */
196#define JEMALLOC_INTERNAL_FFSLL __builtin_ffsll
197#define JEMALLOC_INTERNAL_FFSL __builtin_ffsl
198#define JEMALLOC_INTERNAL_FFS __builtin_ffs
199
200/*
201 * JEMALLOC_IVSALLOC enables ivsalloc(), which verifies that pointers reside
202 * within jemalloc-owned chunks before dereferencing them.
203 */
204/* #undef JEMALLOC_IVSALLOC */
205
206/*
207 * If defined, explicitly attempt to more uniformly distribute large allocation
208 * pointer alignments across all cache indices.
209 */
210#define JEMALLOC_CACHE_OBLIVIOUS
211
212/*
213 * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings.
214 */
215/* #undef JEMALLOC_ZONE */
216/* #undef JEMALLOC_ZONE_VERSION */
217
218/*
219 * Methods for determining whether the OS overcommits.
220 * JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY: Linux's
221 * /proc/sys/vm.overcommit_memory file.
222 * JEMALLOC_SYSCTL_VM_OVERCOMMIT: FreeBSD's vm.overcommit sysctl.
223 */
224/* #undef JEMALLOC_SYSCTL_VM_OVERCOMMIT */
225#define JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY
226
227/*
228 * Methods for purging unused pages differ between operating systems.
229 *
230 * madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages,
231 * such that new pages will be demand-zeroed if
232 * the address region is later touched.
233 * madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being
234 * unused, such that they will be discarded rather
235 * than swapped out.
236 */
237#define JEMALLOC_PURGE_MADVISE_DONTNEED
238/* #undef JEMALLOC_PURGE_MADVISE_FREE */
239
240/* Define if operating system has alloca.h header. */
241#define JEMALLOC_HAS_ALLOCA_H 1
242
243/* C99 restrict keyword supported. */
244#define JEMALLOC_HAS_RESTRICT 1
245
246/* For use by hash code. */
247/* #undef JEMALLOC_BIG_ENDIAN */
248
249/* sizeof(int) == 2^LG_SIZEOF_INT. */
250#define LG_SIZEOF_INT 2
251
252/* sizeof(long) == 2^LG_SIZEOF_LONG. */
253#define LG_SIZEOF_LONG 3
254
255/* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */
256#define LG_SIZEOF_LONG_LONG 3
257
258/* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */
259#define LG_SIZEOF_INTMAX_T 3
260
261/* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */
262#define JEMALLOC_GLIBC_MALLOC_HOOK
263
264/* glibc memalign hook. */
265#define JEMALLOC_GLIBC_MEMALIGN_HOOK
266
267/* Adaptive mutex support in pthreads. */
268#define JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP
269
270/*
271 * If defined, jemalloc symbols are not exported (doesn't work when
272 * JEMALLOC_PREFIX is not defined).
273 */
274/* #undef JEMALLOC_EXPORT */
275
276/* config.malloc_conf options string. */
277#define JEMALLOC_CONFIG_MALLOC_CONF ""
278
279#endif /* JEMALLOC_INTERNAL_DEFS_H_ */
280