deps/jemalloc/include/jemalloc/jemalloc_defs.h.in

   1 #ifndef JEMALLOC_DEFS_H_
   2 #define JEMALLOC_DEFS_H_
   3
   4 /*
   5  * If JEMALLOC_PREFIX is defined, it will cause all public APIs to be prefixed.
   6  * This makes it possible, with some care, to use multiple allocators
   7  * simultaneously.
   8  *
   9  * In many cases it is more convenient to manually prefix allocator function
  10  * calls than to let macros do it automatically, particularly when using
  11  * multiple allocators simultaneously.  Define JEMALLOC_MANGLE before
  12  * #include'ing jemalloc.h in order to cause name mangling that corresponds to
  13  * the API prefixing.
  14  */
  15 #undef JEMALLOC_PREFIX
  16 #undef JEMALLOC_CPREFIX
  17 #if (defined(JEMALLOC_PREFIX) && defined(JEMALLOC_MANGLE))
  18 #undef JEMALLOC_P
  19 #endif
  20
  21 /*
  22  * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs.
  23  * For shared libraries, symbol visibility mechanisms prevent these symbols
  24  * from being exported, but for static libraries, naming collisions are a real
  25  * possibility.
  26  */
  27 #undef JEMALLOC_PRIVATE_NAMESPACE
  28 #undef JEMALLOC_N
  29
  30 /*
  31  * Hyper-threaded CPUs may need a special instruction inside spin loops in
  32  * order to yield to another virtual CPU.
  33  */
  34 #undef CPU_SPINWAIT
  35
  36 /*
  37  * Defined if OSAtomic*() functions are available, as provided by Darwin, and
  38  * documented in the atomic(3) manual page.
  39  */
  40 #undef JEMALLOC_OSATOMIC
  41
  42 /*
  43  * Defined if OSSpin*() functions are available, as provided by Darwin, and
  44  * documented in the spinlock(3) manual page.
  45  */
  46 #undef JEMALLOC_OSSPIN
  47
  48 /* Defined if __attribute__((...)) syntax is supported. */
  49 #undef JEMALLOC_HAVE_ATTR
  50 #ifdef JEMALLOC_HAVE_ATTR
  51 #  define JEMALLOC_ATTR(s) __attribute__((s))
  52 #else
  53 #  define JEMALLOC_ATTR(s)
  54 #endif
  55
  56 /* JEMALLOC_CC_SILENCE enables code that silences unuseful compiler warnings. */
  57 #undef JEMALLOC_CC_SILENCE
  58
  59 /*
  60  * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
  61  * inline functions.
  62  */
  63 #undef JEMALLOC_DEBUG
  64
  65 /* JEMALLOC_STATS enables statistics calculation. */
  66 #undef JEMALLOC_STATS
  67
  68 /* JEMALLOC_PROF enables allocation profiling. */
  69 #undef JEMALLOC_PROF
  70
  71 /* Use libunwind for profile backtracing if defined. */
  72 #undef JEMALLOC_PROF_LIBUNWIND
  73
  74 /* Use libgcc for profile backtracing if defined. */
  75 #undef JEMALLOC_PROF_LIBGCC
  76
  77 /* Use gcc intrinsics for profile backtracing if defined. */
  78 #undef JEMALLOC_PROF_GCC
  79
  80 /*
  81  * JEMALLOC_TINY enables support for tiny objects, which are smaller than one
  82  * quantum.
  83  */
  84 #undef JEMALLOC_TINY
  85
  86 /*
  87  * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects.
  88  * This makes it possible to allocate/deallocate objects without any locking
  89  * when the cache is in the steady state.
  90  */
  91 #undef JEMALLOC_TCACHE
  92
  93 /*
  94  * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage
  95  * segment (DSS).
  96  */
  97 #undef JEMALLOC_DSS
  98
  99 /* JEMALLOC_SWAP enables mmap()ed swap file support. */
 100 #undef JEMALLOC_SWAP
 101
 102 /* Support memory filling (junk/zero). */
 103 #undef JEMALLOC_FILL
 104
 105 /* Support optional abort() on OOM. */
 106 #undef JEMALLOC_XMALLOC
 107
 108 /* Support SYSV semantics. */
 109 #undef JEMALLOC_SYSV
 110
 111 /* Support lazy locking (avoid locking unless a second thread is launched). */
 112 #undef JEMALLOC_LAZY_LOCK
 113
 114 /* Determine page size at run time if defined. */
 115 #undef DYNAMIC_PAGE_SHIFT
 116
 117 /* One page is 2^STATIC_PAGE_SHIFT bytes. */
 118 #undef STATIC_PAGE_SHIFT
 119
 120 /* TLS is used to map arenas and magazine caches to threads. */
 121 #undef NO_TLS
 122
 123 /*
 124  * JEMALLOC_IVSALLOC enables ivsalloc(), which verifies that pointers reside
 125  * within jemalloc-owned chunks before dereferencing them.
 126  */
 127 #undef JEMALLOC_IVSALLOC
 128
 129 /*
 130  * Define overrides for non-standard allocator-related functions if they
 131  * are present on the system.
 132  */
 133 #undef JEMALLOC_OVERRIDE_MEMALIGN
 134 #undef JEMALLOC_OVERRIDE_VALLOC
 135
 136 /*
 137  * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings.
 138  */
 139 #undef JEMALLOC_ZONE
 140 #undef JEMALLOC_ZONE_VERSION
 141
 142 /* If defined, use mremap(...MREMAP_FIXED...) for huge realloc(). */
 143 #undef JEMALLOC_MREMAP_FIXED
 144
 145 /*
 146  * Methods for purging unused pages differ between operating systems.
 147  *
 148  *   madvise(..., MADV_DONTNEED) : On Linux, this immediately discards pages,
 149  *                                 such that new pages will be demand-zeroed if
 150  *                                 the address region is later touched.
 151  *   madvise(..., MADV_FREE) : On FreeBSD and Darwin, this marks pages as being
 152  *                             unused, such that they will be discarded rather
 153  *                             than swapped out.
 154  */
 155 #undef JEMALLOC_PURGE_MADVISE_DONTNEED
 156 #undef JEMALLOC_PURGE_MADVISE_FREE
 157
 158 /* sizeof(void *) == 2^LG_SIZEOF_PTR. */
 159 #undef LG_SIZEOF_PTR
 160
 161 /* sizeof(int) == 2^LG_SIZEOF_INT. */
 162 #undef LG_SIZEOF_INT
 163
 164 /* sizeof(long) == 2^LG_SIZEOF_LONG. */
 165 #undef LG_SIZEOF_LONG
 166
 167 #endif /* JEMALLOC_DEFS_H_ */