| #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 |
| |
| /* |
| * Define overrides for non-standard allocator-related functions if they are |
| * present on the system. |
| */ |
| #undef JEMALLOC_OVERRIDE___LIBC_CALLOC |
| #undef JEMALLOC_OVERRIDE___LIBC_FREE |
| #undef JEMALLOC_OVERRIDE___LIBC_MALLOC |
| #undef JEMALLOC_OVERRIDE___LIBC_MEMALIGN |
| #undef JEMALLOC_OVERRIDE___LIBC_REALLOC |
| #undef JEMALLOC_OVERRIDE___LIBC_VALLOC |
| #undef JEMALLOC_OVERRIDE___POSIX_MEMALIGN |
| |
| /* |
| * 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. |
| */ |
| #undef JEMALLOC_PRIVATE_NAMESPACE |
| |
| /* |
| * Hyper-threaded CPUs may need a special instruction inside spin loops in |
| * order to yield to another virtual CPU. |
| */ |
| #undef CPU_SPINWAIT |
| /* 1 if CPU_SPINWAIT is defined, 0 otherwise. */ |
| #undef HAVE_CPU_SPINWAIT |
| |
| /* |
| * Number of significant bits in virtual addresses. This may be less than the |
| * total number of bits in a pointer, e.g. on x64, for which the uppermost 16 |
| * bits are the same as bit 47. |
| */ |
| #undef LG_VADDR |
| |
| /* Defined if C11 atomics are available. */ |
| #undef JEMALLOC_C11_ATOMICS |
| |
| /* Defined if GCC __atomic atomics are available. */ |
| #undef JEMALLOC_GCC_ATOMIC_ATOMICS |
| /* and the 8-bit variant support. */ |
| #undef JEMALLOC_GCC_U8_ATOMIC_ATOMICS |
| |
| /* Defined if GCC __sync atomics are available. */ |
| #undef JEMALLOC_GCC_SYNC_ATOMICS |
| /* and the 8-bit variant support. */ |
| #undef JEMALLOC_GCC_U8_SYNC_ATOMICS |
| |
| /* |
| * Defined if __builtin_clz() and __builtin_clzl() are available. |
| */ |
| #undef JEMALLOC_HAVE_BUILTIN_CLZ |
| |
| /* |
| * Defined if os_unfair_lock_*() functions are available, as provided by Darwin. |
| */ |
| #undef JEMALLOC_OS_UNFAIR_LOCK |
| |
| /* Defined if syscall(2) is usable. */ |
| #undef JEMALLOC_USE_SYSCALL |
| |
| /* |
| * Defined if secure_getenv(3) is available. |
| */ |
| #undef JEMALLOC_HAVE_SECURE_GETENV |
| |
| /* |
| * Defined if issetugid(2) is available. |
| */ |
| #undef JEMALLOC_HAVE_ISSETUGID |
| |
| /* Defined if pthread_atfork(3) is available. */ |
| #undef JEMALLOC_HAVE_PTHREAD_ATFORK |
| |
| /* Defined if pthread_setname_np(3) is available. */ |
| #undef JEMALLOC_HAVE_PTHREAD_SETNAME_NP |
| |
| /* |
| * Defined if clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is available. |
| */ |
| #undef JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE |
| |
| /* |
| * Defined if clock_gettime(CLOCK_MONOTONIC, ...) is available. |
| */ |
| #undef JEMALLOC_HAVE_CLOCK_MONOTONIC |
| |
| /* |
| * Defined if mach_absolute_time() is available. |
| */ |
| #undef JEMALLOC_HAVE_MACH_ABSOLUTE_TIME |
| |
| /* |
| * 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. |
| */ |
| #undef 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. |
| */ |
| #undef JEMALLOC_MUTEX_INIT_CB |
| |
| /* Non-empty if the tls_model attribute is supported. */ |
| #undef JEMALLOC_TLS_MODEL |
| |
| /* |
| * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables |
| * inline functions. |
| */ |
| #undef JEMALLOC_DEBUG |
| |
| /* JEMALLOC_STATS enables statistics calculation. */ |
| #undef JEMALLOC_STATS |
| |
| /* JEMALLOC_EXPERIMENTAL_SMALLOCX_API enables experimental smallocx API. */ |
| #undef JEMALLOC_EXPERIMENTAL_SMALLOCX_API |
| |
| /* 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_DSS enables use of sbrk(2) to allocate extents from the data storage |
| * segment (DSS). |
| */ |
| #undef JEMALLOC_DSS |
| |
| /* Support memory filling (junk/zero). */ |
| #undef JEMALLOC_FILL |
| |
| /* Support utrace(2)-based tracing. */ |
| #undef JEMALLOC_UTRACE |
| |
| /* Support optional abort() on OOM. */ |
| #undef JEMALLOC_XMALLOC |
| |
| /* Support lazy locking (avoid locking unless a second thread is launched). */ |
| #undef JEMALLOC_LAZY_LOCK |
| |
| /* |
| * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size |
| * classes). |
| */ |
| #undef LG_QUANTUM |
| |
| /* One page is 2^LG_PAGE bytes. */ |
| #undef LG_PAGE |
| |
| /* |
| * One huge page is 2^LG_HUGEPAGE bytes. Note that this is defined even if the |
| * system does not explicitly support huge pages; system calls that require |
| * explicit huge page support are separately configured. |
| */ |
| #undef LG_HUGEPAGE |
| |
| /* |
| * 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. |
| */ |
| #undef JEMALLOC_MAPS_COALESCE |
| |
| /* |
| * If defined, retain memory for later reuse by default rather than using e.g. |
| * munmap() to unmap freed extents. This is enabled on 64-bit Linux because |
| * common sequences of mmap()/munmap() calls will cause virtual memory map |
| * holes. |
| */ |
| #undef JEMALLOC_RETAIN |
| |
| /* TLS is used to map arenas and magazine caches to threads. */ |
| #undef JEMALLOC_TLS |
| |
| /* |
| * Used to mark unreachable code to quiet "end of non-void" compiler warnings. |
| * Don't use this directly; instead use unreachable() from util.h |
| */ |
| #undef JEMALLOC_INTERNAL_UNREACHABLE |
| |
| /* |
| * ffs*() functions to use for bitmapping. Don't use these directly; instead, |
| * use ffs_*() from util.h. |
| */ |
| #undef JEMALLOC_INTERNAL_FFSLL |
| #undef JEMALLOC_INTERNAL_FFSL |
| #undef JEMALLOC_INTERNAL_FFS |
| |
| /* |
| * popcount*() functions to use for bitmapping. |
| */ |
| #undef JEMALLOC_INTERNAL_POPCOUNTL |
| #undef JEMALLOC_INTERNAL_POPCOUNT |
| |
| /* |
| * If defined, explicitly attempt to more uniformly distribute large allocation |
| * pointer alignments across all cache indices. |
| */ |
| #undef JEMALLOC_CACHE_OBLIVIOUS |
| |
| /* |
| * If defined, enable logging facilities. We make this a configure option to |
| * avoid taking extra branches everywhere. |
| */ |
| #undef JEMALLOC_LOG |
| |
| /* |
| * If defined, use readlinkat() (instead of readlink()) to follow |
| * /etc/malloc_conf. |
| */ |
| #undef JEMALLOC_READLINKAT |
| |
| /* |
| * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. |
| */ |
| #undef JEMALLOC_ZONE |
| |
| /* |
| * 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. |
| */ |
| #undef JEMALLOC_SYSCTL_VM_OVERCOMMIT |
| #undef JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY |
| |
| /* Defined if madvise(2) is available. */ |
| #undef JEMALLOC_HAVE_MADVISE |
| |
| /* |
| * Defined if transparent huge pages are supported via the MADV_[NO]HUGEPAGE |
| * arguments to madvise(2). |
| */ |
| #undef JEMALLOC_HAVE_MADVISE_HUGE |
| |
| /* |
| * Methods for purging unused pages differ between operating systems. |
| * |
| * madvise(..., MADV_FREE) : This marks pages as being unused, such that they |
| * will be discarded rather than swapped out. |
| * madvise(..., MADV_DONTNEED) : If JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS is |
| * defined, this immediately discards pages, |
| * such that new pages will be demand-zeroed if |
| * the address region is later touched; |
| * otherwise this behaves similarly to |
| * MADV_FREE, though typically with higher |
| * system overhead. |
| */ |
| #undef JEMALLOC_PURGE_MADVISE_FREE |
| #undef JEMALLOC_PURGE_MADVISE_DONTNEED |
| #undef JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS |
| |
| /* Defined if madvise(2) is available but MADV_FREE is not (x86 Linux only). */ |
| #undef JEMALLOC_DEFINE_MADVISE_FREE |
| |
| /* |
| * Defined if MADV_DO[NT]DUMP is supported as an argument to madvise. |
| */ |
| #undef JEMALLOC_MADVISE_DONTDUMP |
| |
| /* |
| * Defined if transparent huge pages (THPs) are supported via the |
| * MADV_[NO]HUGEPAGE arguments to madvise(2), and THP support is enabled. |
| */ |
| #undef JEMALLOC_THP |
| |
| /* Define if operating system has alloca.h header. */ |
| #undef JEMALLOC_HAS_ALLOCA_H |
| |
| /* C99 restrict keyword supported. */ |
| #undef JEMALLOC_HAS_RESTRICT |
| |
| /* For use by hash code. */ |
| #undef JEMALLOC_BIG_ENDIAN |
| |
| /* sizeof(int) == 2^LG_SIZEOF_INT. */ |
| #undef LG_SIZEOF_INT |
| |
| /* sizeof(long) == 2^LG_SIZEOF_LONG. */ |
| #undef LG_SIZEOF_LONG |
| |
| /* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */ |
| #undef LG_SIZEOF_LONG_LONG |
| |
| /* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ |
| #undef LG_SIZEOF_INTMAX_T |
| |
| /* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */ |
| #undef JEMALLOC_GLIBC_MALLOC_HOOK |
| |
| /* glibc memalign hook. */ |
| #undef JEMALLOC_GLIBC_MEMALIGN_HOOK |
| |
| /* pthread support */ |
| #undef JEMALLOC_HAVE_PTHREAD |
| |
| /* dlsym() support */ |
| #undef JEMALLOC_HAVE_DLSYM |
| |
| /* Adaptive mutex support in pthreads. */ |
| #undef JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP |
| |
| /* GNU specific sched_getcpu support */ |
| #undef JEMALLOC_HAVE_SCHED_GETCPU |
| |
| /* GNU specific sched_setaffinity support */ |
| #undef JEMALLOC_HAVE_SCHED_SETAFFINITY |
| |
| /* |
| * If defined, all the features necessary for background threads are present. |
| */ |
| #undef JEMALLOC_BACKGROUND_THREAD |
| |
| /* |
| * If defined, jemalloc symbols are not exported (doesn't work when |
| * JEMALLOC_PREFIX is not defined). |
| */ |
| #undef JEMALLOC_EXPORT |
| |
| /* config.malloc_conf options string. */ |
| #undef JEMALLOC_CONFIG_MALLOC_CONF |
| |
| /* If defined, jemalloc takes the malloc/free/etc. symbol names. */ |
| #undef JEMALLOC_IS_MALLOC |
| |
| /* |
| * Defined if strerror_r returns char * if _GNU_SOURCE is defined. |
| */ |
| #undef JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE |
| |
| /* Performs additional size-matching sanity checks when defined. */ |
| #undef JEMALLOC_EXTRA_SIZE_CHECK |
| |
| #endif /* JEMALLOC_INTERNAL_DEFS_H_ */ |