/* include/jemalloc/internal/jemalloc_internal_defs.h. Generated from jemalloc_internal_defs.h.in by configure. */ #ifndef JEMALLOC_INTERNAL_DEFS_H_ #define JEMALLOC_INTERNAL_DEFS_H_ /* * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all * public APIs to be prefixed. This makes it possible, with some care, to use * multiple allocators simultaneously. */ /* #undef JEMALLOC_PREFIX */ /* #undef JEMALLOC_CPREFIX */ /* * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs. * For shared libraries, symbol visibility mechanisms prevent these symbols * from being exported, but for static libraries, naming collisions are a real * possibility. */ #define JEMALLOC_PRIVATE_NAMESPACE __je_ /* * Hyper-threaded CPUs may need a special instruction inside spin loops in * order to yield to another virtual CPU. */ #define CPU_SPINWAIT __asm__ volatile("pause") /* Defined if C11 atomics are available. */ /* #undef JEMALLOC_C11ATOMICS */ /* Defined if the equivalent of FreeBSD's atomic(9) functions are available. */ #define JEMALLOC_ATOMIC9 1 /* * Defined if OSAtomic*() functions are available, as provided by Darwin, and * documented in the atomic(3) manual page. */ /* #undef JEMALLOC_OSATOMIC */ /* * Defined if __sync_add_and_fetch(uint32_t *, uint32_t) and * __sync_sub_and_fetch(uint32_t *, uint32_t) are available, despite * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 not being defined (which means the * functions are defined in libgcc instead of being inlines). */ /* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_4 */ /* * Defined if __sync_add_and_fetch(uint64_t *, uint64_t) and * __sync_sub_and_fetch(uint64_t *, uint64_t) are available, despite * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 not being defined (which means the * functions are defined in libgcc instead of being inlines). */ /* #undef JE_FORCE_SYNC_COMPARE_AND_SWAP_8 */ /* * Defined if __builtin_clz() and __builtin_clzl() are available. */ #define JEMALLOC_HAVE_BUILTIN_CLZ /* * Defined if madvise(2) is available. */ #define JEMALLOC_HAVE_MADVISE /* * Defined if OSSpin*() functions are available, as provided by Darwin, and * documented in the spinlock(3) manual page. */ /* #undef JEMALLOC_OSSPIN */ /* * Defined if secure_getenv(3) is available. */ /* #undef JEMALLOC_HAVE_SECURE_GETENV */ /* * Defined if issetugid(2) is available. */ #define JEMALLOC_HAVE_ISSETUGID /* * Defined if _malloc_thread_cleanup() exists. At least in the case of * FreeBSD, pthread_key_create() allocates, which if used during malloc * bootstrapping will cause recursion into the pthreads library. Therefore, if * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in * malloc_tsd. */ #define JEMALLOC_MALLOC_THREAD_CLEANUP /* * Defined if threaded initialization is known to be safe on this platform. * Among other things, it must be possible to initialize a mutex without * triggering allocation in order for threaded allocation to be safe. */ /* #undef JEMALLOC_THREADED_INIT */ /* * Defined if the pthreads implementation defines * _pthread_mutex_init_calloc_cb(), in which case the function is used in order * to avoid recursive allocation during mutex initialization. */ #define JEMALLOC_MUTEX_INIT_CB 1 /* Non-empty if the tls_model attribute is supported. */ #define JEMALLOC_TLS_MODEL __attribute__((tls_model("initial-exec"))) /* JEMALLOC_CC_SILENCE enables code that silences unuseful compiler warnings. */ #define JEMALLOC_CC_SILENCE /* JEMALLOC_CODE_COVERAGE enables test code coverage analysis. */ /* #undef JEMALLOC_CODE_COVERAGE */ /* * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables * inline functions. */ /* #undef JEMALLOC_DEBUG */ /* JEMALLOC_STATS enables statistics calculation. */ #define JEMALLOC_STATS /* JEMALLOC_PROF enables allocation profiling. */ /* #undef JEMALLOC_PROF */ /* Use libunwind for profile backtracing if defined. */ /* #undef JEMALLOC_PROF_LIBUNWIND */ /* Use libgcc for profile backtracing if defined. */ /* #undef JEMALLOC_PROF_LIBGCC */ /* Use gcc intrinsics for profile backtracing if defined. */ /* #undef JEMALLOC_PROF_GCC */ /* * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects. * This makes it possible to allocate/deallocate objects without any locking * when the cache is in the steady state. */ #define JEMALLOC_TCACHE /* * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage * segment (DSS). */ #define JEMALLOC_DSS /* Support memory filling (junk/zero/quarantine/redzone). */ #define JEMALLOC_FILL /* Support utrace(2)-based tracing. */ #define JEMALLOC_UTRACE /* Support Valgrind. */ /* #undef JEMALLOC_VALGRIND */ /* Support optional abort() on OOM. */ #define JEMALLOC_XMALLOC /* Support lazy locking (avoid locking unless a second thread is launched). */ #define JEMALLOC_LAZY_LOCK /* Minimum size class to support is 2^LG_TINY_MIN bytes. */ #define LG_TINY_MIN 3 /* * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size * classes). */ /* #undef LG_QUANTUM */ /* One page is 2^LG_PAGE bytes. */ #define LG_PAGE 12 /* * If defined, adjacent virtual memory mappings with identical attributes * automatically coalesce, and they fragment when changes are made to subranges. * This is the normal order of things for mmap()/munmap(), but on Windows * VirtualAlloc()/VirtualFree() operations must be precisely matched, i.e. * mappings do *not* coalesce/fragment. */ #define JEMALLOC_MAPS_COALESCE /* * If defined, use munmap() to unmap freed chunks, rather than storing them for * later reuse. This is disabled by default on Linux because common sequences * of mmap()/munmap() calls will cause virtual memory map holes. */ #define JEMALLOC_MUNMAP /* TLS is used to map arenas and magazine caches to threads. */ #define JEMALLOC_TLS /* * ffs*() functions to use for bitmapping. Don't use these directly; instead, * use ffs_*() from util.h. */ #define JEMALLOC_INTERNAL_FFSLL __builtin_ffsll #define JEMALLOC_INTERNAL_FFSL __builtin_ffsl #define JEMALLOC_INTERNAL_FFS __builtin_ffs /* * JEMALLOC_IVSALLOC enables ivsalloc(), which verifies that pointers reside * within jemalloc-owned chunks before dereferencing them. */ /* #undef JEMALLOC_IVSALLOC */ /* * If defined, explicitly attempt to more uniformly distribute large allocation * pointer alignments across all cache indices. */ #define JEMALLOC_CACHE_OBLIVIOUS /* * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. */ /* #undef JEMALLOC_ZONE */ /* #undef JEMALLOC_ZONE_VERSION */ /* * Methods for determining whether the OS overcommits. * JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY: Linux's * /proc/sys/vm.overcommit_memory file. * JEMALLOC_SYSCTL_VM_OVERCOMMIT: FreeBSD's vm.overcommit sysctl. */ #define JEMALLOC_SYSCTL_VM_OVERCOMMIT /* #undef JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY */ /* * Methods for purging unused pages differ between operating systems. * * madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages, * such that new pages will be demand-zeroed if * the address region is later touched. * madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being * unused, such that they will be discarded rather * than swapped out. */ /* #undef JEMALLOC_PURGE_MADVISE_DONTNEED */ #define JEMALLOC_PURGE_MADVISE_FREE /* Define if operating system has alloca.h header. */ /* #undef JEMALLOC_HAS_ALLOCA_H */ /* C99 restrict keyword supported. */ #define JEMALLOC_HAS_RESTRICT 1 /* For use by hash code. */ /* #undef JEMALLOC_BIG_ENDIAN */ /* sizeof(int) == 2^LG_SIZEOF_INT. */ #define LG_SIZEOF_INT 2 /* sizeof(long) == 2^LG_SIZEOF_LONG. */ #define LG_SIZEOF_LONG 3 /* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */ #define LG_SIZEOF_LONG_LONG 3 /* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ #define LG_SIZEOF_INTMAX_T 3 /* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */ /* #undef JEMALLOC_GLIBC_MALLOC_HOOK */ /* glibc memalign hook. */ /* #undef JEMALLOC_GLIBC_MEMALIGN_HOOK */ /* Adaptive mutex support in pthreads. */ #define JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP /* * If defined, jemalloc symbols are not exported (doesn't work when * JEMALLOC_PREFIX is not defined). */ /* #undef JEMALLOC_EXPORT */ /* config.malloc_conf options string. */ #define JEMALLOC_CONFIG_MALLOC_CONF "" #endif /* JEMALLOC_INTERNAL_DEFS_H_ */