jemalloc_internal_defs.h.in revision 4d434adb146375ad17f0d5e994ed5728d2942e3f
1#ifndef JEMALLOC_INTERNAL_DEFS_H_ 2#define JEMALLOC_INTERNAL_DEFS_H_ 3/* 4 * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all 5 * public APIs to be prefixed. This makes it possible, with some care, to use 6 * multiple allocators simultaneously. 7 */ 8#undef JEMALLOC_PREFIX 9#undef JEMALLOC_CPREFIX 10 11/* 12 * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs. 13 * For shared libraries, symbol visibility mechanisms prevent these symbols 14 * from being exported, but for static libraries, naming collisions are a real 15 * possibility. 16 */ 17#undef JEMALLOC_PRIVATE_NAMESPACE 18 19/* 20 * Hyper-threaded CPUs may need a special instruction inside spin loops in 21 * order to yield to another virtual CPU. 22 */ 23#undef CPU_SPINWAIT 24 25/* Defined if the equivalent of FreeBSD's atomic(9) functions are available. */ 26#undef JEMALLOC_ATOMIC9 27 28/* 29 * Defined if OSAtomic*() functions are available, as provided by Darwin, and 30 * documented in the atomic(3) manual page. 31 */ 32#undef JEMALLOC_OSATOMIC 33 34/* 35 * Defined if __sync_add_and_fetch(uint32_t *, uint32_t) and 36 * __sync_sub_and_fetch(uint32_t *, uint32_t) are available, despite 37 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 not being defined (which means the 38 * functions are defined in libgcc instead of being inlines) 39 */ 40#undef JE_FORCE_SYNC_COMPARE_AND_SWAP_4 41 42/* 43 * Defined if __sync_add_and_fetch(uint64_t *, uint64_t) and 44 * __sync_sub_and_fetch(uint64_t *, uint64_t) are available, despite 45 * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 not being defined (which means the 46 * functions are defined in libgcc instead of being inlines) 47 */ 48#undef JE_FORCE_SYNC_COMPARE_AND_SWAP_8 49 50/* 51 * Defined if OSSpin*() functions are available, as provided by Darwin, and 52 * documented in the spinlock(3) manual page. 53 */ 54#undef JEMALLOC_OSSPIN 55 56/* 57 * Defined if _malloc_thread_cleanup() exists. At least in the case of 58 * FreeBSD, pthread_key_create() allocates, which if used during malloc 59 * bootstrapping will cause recursion into the pthreads library. Therefore, if 60 * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in 61 * malloc_tsd. 62 */ 63#undef JEMALLOC_MALLOC_THREAD_CLEANUP 64 65/* 66 * Defined if threaded initialization is known to be safe on this platform. 67 * Among other things, it must be possible to initialize a mutex without 68 * triggering allocation in order for threaded allocation to be safe. 69 */ 70#undef JEMALLOC_THREADED_INIT 71 72/* 73 * Defined if the pthreads implementation defines 74 * _pthread_mutex_init_calloc_cb(), in which case the function is used in order 75 * to avoid recursive allocation during mutex initialization. 76 */ 77#undef JEMALLOC_MUTEX_INIT_CB 78 79/* Non-empty if the tls_model attribute is supported. */ 80#undef JEMALLOC_TLS_MODEL 81 82/* JEMALLOC_CC_SILENCE enables code that silences unuseful compiler warnings. */ 83#undef JEMALLOC_CC_SILENCE 84 85/* JEMALLOC_CODE_COVERAGE enables test code coverage analysis. */ 86#undef JEMALLOC_CODE_COVERAGE 87 88/* 89 * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables 90 * inline functions. 91 */ 92#undef JEMALLOC_DEBUG 93 94/* JEMALLOC_STATS enables statistics calculation. */ 95#undef JEMALLOC_STATS 96 97/* JEMALLOC_PROF enables allocation profiling. */ 98#undef JEMALLOC_PROF 99 100/* Use libunwind for profile backtracing if defined. */ 101#undef JEMALLOC_PROF_LIBUNWIND 102 103/* Use libgcc for profile backtracing if defined. */ 104#undef JEMALLOC_PROF_LIBGCC 105 106/* Use gcc intrinsics for profile backtracing if defined. */ 107#undef JEMALLOC_PROF_GCC 108 109/* 110 * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects. 111 * This makes it possible to allocate/deallocate objects without any locking 112 * when the cache is in the steady state. 113 */ 114#undef JEMALLOC_TCACHE 115 116/* 117 * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage 118 * segment (DSS). 119 */ 120#undef JEMALLOC_DSS 121 122/* Support memory filling (junk/zero/quarantine/redzone). */ 123#undef JEMALLOC_FILL 124 125/* Support utrace(2)-based tracing. */ 126#undef JEMALLOC_UTRACE 127 128/* Support Valgrind. */ 129#undef JEMALLOC_VALGRIND 130 131/* Support optional abort() on OOM. */ 132#undef JEMALLOC_XMALLOC 133 134/* Support lazy locking (avoid locking unless a second thread is launched). */ 135#undef JEMALLOC_LAZY_LOCK 136 137/* One page is 2^STATIC_PAGE_SHIFT bytes. */ 138#undef STATIC_PAGE_SHIFT 139 140/* 141 * If defined, use munmap() to unmap freed chunks, rather than storing them for 142 * later reuse. This is disabled by default on Linux because common sequences 143 * of mmap()/munmap() calls will cause virtual memory map holes. 144 */ 145#undef JEMALLOC_MUNMAP 146 147/* 148 * If defined, use mremap(...MREMAP_FIXED...) for huge realloc(). This is 149 * disabled by default because it is Linux-specific and it will cause virtual 150 * memory map holes, much like munmap(2) does. 151 */ 152#undef JEMALLOC_MREMAP 153 154/* TLS is used to map arenas and magazine caches to threads. */ 155#undef JEMALLOC_TLS 156 157/* 158 * JEMALLOC_IVSALLOC enables ivsalloc(), which verifies that pointers reside 159 * within jemalloc-owned chunks before dereferencing them. 160 */ 161#undef JEMALLOC_IVSALLOC 162 163/* 164 * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. 165 */ 166#undef JEMALLOC_ZONE 167#undef JEMALLOC_ZONE_VERSION 168 169/* 170 * Methods for purging unused pages differ between operating systems. 171 * 172 * madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages, 173 * such that new pages will be demand-zeroed if 174 * the address region is later touched. 175 * madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being 176 * unused, such that they will be discarded rather 177 * than swapped out. 178 */ 179#undef JEMALLOC_PURGE_MADVISE_DONTNEED 180#undef JEMALLOC_PURGE_MADVISE_FREE 181 182/* 183 * Define if operating system has alloca.h header. 184 */ 185#undef JEMALLOC_HAS_ALLOCA_H 186 187/* C99 restrict keyword supported. */ 188#undef JEMALLOC_HAS_RESTRICT 189 190/* For use by hash code. */ 191#undef JEMALLOC_BIG_ENDIAN 192 193/* sizeof(int) == 2^LG_SIZEOF_INT. */ 194#undef LG_SIZEOF_INT 195 196/* sizeof(long) == 2^LG_SIZEOF_LONG. */ 197#undef LG_SIZEOF_LONG 198 199/* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ 200#undef LG_SIZEOF_INTMAX_T 201 202#endif /* JEMALLOC_INTERNAL_DEFS_H_ */ 203