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