jemalloc_internal_defs.h.in revision 2aa7fed9c983d8dcde7c0cacf1b024c966758b88
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 __builtin_clz() and __builtin_clzl() are available. 52 */ 53#undef JEMALLOC_HAVE_BUILTIN_CLZ 54 55/* 56 * Defined if OSSpin*() functions are available, as provided by Darwin, and 57 * documented in the spinlock(3) manual page. 58 */ 59#undef JEMALLOC_OSSPIN 60 61/* 62 * Defined if _malloc_thread_cleanup() exists. At least in the case of 63 * FreeBSD, pthread_key_create() allocates, which if used during malloc 64 * bootstrapping will cause recursion into the pthreads library. Therefore, if 65 * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in 66 * malloc_tsd. 67 */ 68#undef JEMALLOC_MALLOC_THREAD_CLEANUP 69 70/* 71 * Defined if threaded initialization is known to be safe on this platform. 72 * Among other things, it must be possible to initialize a mutex without 73 * triggering allocation in order for threaded allocation to be safe. 74 */ 75#undef JEMALLOC_THREADED_INIT 76 77/* 78 * Defined if the pthreads implementation defines 79 * _pthread_mutex_init_calloc_cb(), in which case the function is used in order 80 * to avoid recursive allocation during mutex initialization. 81 */ 82#undef JEMALLOC_MUTEX_INIT_CB 83 84/* Non-empty if the tls_model attribute is supported. */ 85#undef JEMALLOC_TLS_MODEL 86 87/* JEMALLOC_CC_SILENCE enables code that silences unuseful compiler warnings. */ 88#undef JEMALLOC_CC_SILENCE 89 90/* JEMALLOC_CODE_COVERAGE enables test code coverage analysis. */ 91#undef JEMALLOC_CODE_COVERAGE 92 93/* 94 * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables 95 * inline functions. 96 */ 97#undef JEMALLOC_DEBUG 98 99/* JEMALLOC_STATS enables statistics calculation. */ 100#undef JEMALLOC_STATS 101 102/* JEMALLOC_PROF enables allocation profiling. */ 103#undef JEMALLOC_PROF 104 105/* Use libunwind for profile backtracing if defined. */ 106#undef JEMALLOC_PROF_LIBUNWIND 107 108/* Use libgcc for profile backtracing if defined. */ 109#undef JEMALLOC_PROF_LIBGCC 110 111/* Use gcc intrinsics for profile backtracing if defined. */ 112#undef JEMALLOC_PROF_GCC 113 114/* 115 * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects. 116 * This makes it possible to allocate/deallocate objects without any locking 117 * when the cache is in the steady state. 118 */ 119#undef JEMALLOC_TCACHE 120 121/* 122 * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage 123 * segment (DSS). 124 */ 125#undef JEMALLOC_DSS 126 127/* Support memory filling (junk/zero/quarantine/redzone). */ 128#undef JEMALLOC_FILL 129 130/* Support utrace(2)-based tracing. */ 131#undef JEMALLOC_UTRACE 132 133/* Support Valgrind. */ 134#undef JEMALLOC_VALGRIND 135 136/* Support optional abort() on OOM. */ 137#undef JEMALLOC_XMALLOC 138 139/* Support lazy locking (avoid locking unless a second thread is launched). */ 140#undef JEMALLOC_LAZY_LOCK 141 142/* One page is 2^STATIC_PAGE_SHIFT bytes. */ 143#undef STATIC_PAGE_SHIFT 144 145/* 146 * If defined, use munmap() to unmap freed chunks, rather than storing them for 147 * later reuse. This is disabled by default on Linux because common sequences 148 * of mmap()/munmap() calls will cause virtual memory map holes. 149 */ 150#undef JEMALLOC_MUNMAP 151 152/* TLS is used to map arenas and magazine caches to threads. */ 153#undef JEMALLOC_TLS 154 155/* 156 * ffs()/ffsl() functions to use for bitmapping. Don't use these directly; 157 * instead, use jemalloc_ffs() or jemalloc_ffsl() from util.h. 158 */ 159#undef JEMALLOC_INTERNAL_FFSL 160#undef JEMALLOC_INTERNAL_FFS 161 162/* 163 * JEMALLOC_IVSALLOC enables ivsalloc(), which verifies that pointers reside 164 * within jemalloc-owned chunks before dereferencing them. 165 */ 166#undef JEMALLOC_IVSALLOC 167 168/* 169 * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. 170 */ 171#undef JEMALLOC_ZONE 172#undef JEMALLOC_ZONE_VERSION 173 174/* 175 * Methods for purging unused pages differ between operating systems. 176 * 177 * madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages, 178 * such that new pages will be demand-zeroed if 179 * the address region is later touched. 180 * madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being 181 * unused, such that they will be discarded rather 182 * than swapped out. 183 */ 184#undef JEMALLOC_PURGE_MADVISE_DONTNEED 185#undef JEMALLOC_PURGE_MADVISE_FREE 186 187/* 188 * Define if operating system has alloca.h header. 189 */ 190#undef JEMALLOC_HAS_ALLOCA_H 191 192/* C99 restrict keyword supported. */ 193#undef JEMALLOC_HAS_RESTRICT 194 195/* For use by hash code. */ 196#undef JEMALLOC_BIG_ENDIAN 197 198/* sizeof(int) == 2^LG_SIZEOF_INT. */ 199#undef LG_SIZEOF_INT 200 201/* sizeof(long) == 2^LG_SIZEOF_LONG. */ 202#undef LG_SIZEOF_LONG 203 204/* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ 205#undef LG_SIZEOF_INTMAX_T 206 207#endif /* JEMALLOC_INTERNAL_DEFS_H_ */ 208