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 * 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#ifdef __x86_64__
25#define CPU_SPINWAIT __asm__ volatile("pause")
26#else
27#define CPU_SPINWAIT
28#endif
29
30/* Defined if the equivalent of FreeBSD's atomic(9) functions are available. */
31/* #undef JEMALLOC_ATOMIC9 */
32
33/*
34 * Defined if OSAtomic*() functions are available, as provided by Darwin, and
35 * documented in the atomic(3) manual page.
36 */
37/* #undef JEMALLOC_OSATOMIC */
38
39/*
40 * Defined if __sync_add_and_fetch(uint32_t *, uint32_t) and
41 * __sync_sub_and_fetch(uint32_t *, uint32_t) are available, despite
42 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 not being defined (which means the
43 * functions are defined in libgcc instead of being inlines)
44 */
45/* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_4 */
46
47/*
48 * Defined if __sync_add_and_fetch(uint64_t *, uint64_t) and
49 * __sync_sub_and_fetch(uint64_t *, uint64_t) are available, despite
50 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 not being defined (which means the
51 * functions are defined in libgcc instead of being inlines)
52 */
53/* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_8 */
54
55/*
56 * Defined if __builtin_clz() and __builtin_clzl() are available.
57 */
58#define JEMALLOC_HAVE_BUILTIN_CLZ
59
60/*
61 * Defined if madvise(2) is available.
62 */
63#define JEMALLOC_HAVE_MADVISE
64
65/*
66 * Defined if OSSpin*() functions are available, as provided by Darwin, and
67 * documented in the spinlock(3) manual page.
68 */
69/* #undef JEMALLOC_OSSPIN */
70
71/*
72 * Defined if _malloc_thread_cleanup() exists.  At least in the case of
73 * FreeBSD, pthread_key_create() allocates, which if used during malloc
74 * bootstrapping will cause recursion into the pthreads library.  Therefore, if
75 * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in
76 * malloc_tsd.
77 */
78/* #undef JEMALLOC_MALLOC_THREAD_CLEANUP */
79
80/*
81 * Defined if threaded initialization is known to be safe on this platform.
82 * Among other things, it must be possible to initialize a mutex without
83 * triggering allocation in order for threaded allocation to be safe.
84 */
85#define JEMALLOC_THREADED_INIT
86
87/*
88 * Defined if the pthreads implementation defines
89 * _pthread_mutex_init_calloc_cb(), in which case the function is used in order
90 * to avoid recursive allocation during mutex initialization.
91 */
92/* #undef JEMALLOC_MUTEX_INIT_CB */
93
94/* Non-empty if the tls_model attribute is supported. */
95#define JEMALLOC_TLS_MODEL
96
97/* JEMALLOC_CC_SILENCE enables code that silences unuseful compiler warnings. */
98#define JEMALLOC_CC_SILENCE
99
100/* JEMALLOC_CODE_COVERAGE enables test code coverage analysis. */
101/* #undef JEMALLOC_CODE_COVERAGE */
102
103/*
104 * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
105 * inline functions.
106 */
107/* #undef JEMALLOC_DEBUG */
108
109/* JEMALLOC_STATS enables statistics calculation. */
110#define JEMALLOC_STATS
111
112/* JEMALLOC_PROF enables allocation profiling. */
113/* #undef JEMALLOC_PROF */
114
115/* Use libunwind for profile backtracing if defined. */
116/* #undef JEMALLOC_PROF_LIBUNWIND */
117
118/* Use libgcc for profile backtracing if defined. */
119/* #undef JEMALLOC_PROF_LIBGCC */
120
121/* Use gcc intrinsics for profile backtracing if defined. */
122/* #undef JEMALLOC_PROF_GCC */
123
124/*
125 * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects.
126 * This makes it possible to allocate/deallocate objects without any locking
127 * when the cache is in the steady state.
128 */
129#define JEMALLOC_TCACHE
130
131/*
132 * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage
133 * segment (DSS).
134 */
135#define JEMALLOC_DSS
136
137/* Support memory filling (junk/zero/quarantine/redzone). */
138#define JEMALLOC_FILL
139
140/* Support utrace(2)-based tracing. */
141/* #undef JEMALLOC_UTRACE */
142
143/* Support Valgrind. */
144/* #undef JEMALLOC_VALGRIND */
145
146/* Support optional abort() on OOM. */
147/* #undef JEMALLOC_XMALLOC */
148
149/* Support lazy locking (avoid locking unless a second thread is launched). */
150/* #undef JEMALLOC_LAZY_LOCK */
151
152/* One page is 2^STATIC_PAGE_SHIFT bytes. */
153#define STATIC_PAGE_SHIFT 12
154
155/*
156 * If defined, use munmap() to unmap freed chunks, rather than storing them for
157 * later reuse.  This is disabled by default on Linux because common sequences
158 * of mmap()/munmap() calls will cause virtual memory map holes.
159 */
160/* #undef JEMALLOC_MUNMAP */
161
162/* TLS is used to map arenas and magazine caches to threads. */
163/* #undef JEMALLOC_TLS */
164
165/*
166 * ffs()/ffsl() functions to use for bitmapping.  Don't use these directly;
167 * instead, use jemalloc_ffs() or jemalloc_ffsl() from util.h.
168 */
169#define JEMALLOC_INTERNAL_FFSL __builtin_ffsl
170#define JEMALLOC_INTERNAL_FFS __builtin_ffs
171
172/*
173 * JEMALLOC_IVSALLOC enables ivsalloc(), which verifies that pointers reside
174 * within jemalloc-owned chunks before dereferencing them.
175 */
176/* #undef JEMALLOC_IVSALLOC */
177
178/*
179 * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings.
180 */
181/* #undef JEMALLOC_ZONE */
182/* #undef JEMALLOC_ZONE_VERSION */
183
184/*
185 * Methods for purging unused pages differ between operating systems.
186 *
187 *   madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages,
188 *                                 such that new pages will be demand-zeroed if
189 *                                 the address region is later touched.
190 *   madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being
191 *                             unused, such that they will be discarded rather
192 *                             than swapped out.
193 */
194#define JEMALLOC_PURGE_MADVISE_DONTNEED
195/* #undef JEMALLOC_PURGE_MADVISE_FREE */
196
197/*
198 * Define if operating system has alloca.h header.
199 */
200#define JEMALLOC_HAS_ALLOCA_H 1
201
202/* C99 restrict keyword supported. */
203#define JEMALLOC_HAS_RESTRICT 1
204
205/* For use by hash code. */
206/* #undef JEMALLOC_BIG_ENDIAN */
207
208/* sizeof(int) == 2^LG_SIZEOF_INT. */
209#define LG_SIZEOF_INT 2
210
211/* sizeof(long) == 2^LG_SIZEOF_LONG. */
212#ifdef __LP64__
213#define LG_SIZEOF_LONG 3
214#else
215#define LG_SIZEOF_LONG 2
216#endif
217
218/* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */
219#define LG_SIZEOF_INTMAX_T 3
220
221#endif /* JEMALLOC_INTERNAL_DEFS_H_ */
222