git.m6w6.name Git - m6w6/libmemcached/blob - clients/ms_atomic.h

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11
  12 #ifndef CLIENTS_MS_ATOMIC_H
  13 #define CLIENTS_MS_ATOMIC_H
  14
  15 #if defined(__SUNPRO_C)
  16 # define _KERNEL
  17 # include <atomic.h>
  18 # if SIZEOF_SIZE_T == 8
  19 #  define  atomic_add_size(X, Y) atomic_add_64((X), (Y))
  20 #  define  atomic_add_size_nv(X, Y) atomic_add_64((X), (Y))
  21 #  define  atomic_dec_size(X, Y) atomic_add_64((X), (Y))
  22 #  define  atomic_dec_size_nv(X, Y) atomic_add_64((X), (Y))
  23 # else
  24 #  define  atomic_add_size(X, Y) atomic_add_32((X), (Y))
  25 #  define  atomic_add_size_nv(X, Y) atomic_add_32((X), (Y))
  26 #  define  atomic_dec_size(X, Y) atomic_add_32((X), (Y))
  27 #  define  atomic_dec_size_nv(X, Y) atomic_add_32((X), (Y))
  28 # endif
  29 # undef _KERNEL
  30 #elif HAVE_GCC_ATOMIC_BUILTINS
  31 # define atomic_add_8(X, Y)  __sync_fetch_and_add((X), (Y))
  32 # define atomic_add_16(X, Y) __sync_fetch_and_add((X), (Y))
  33 # define atomic_add_32(X, Y) __sync_fetch_and_add((X), (Y))
  34 # define atomic_add_size(X, Y) __sync_fetch_and_add((X), (Y))
  35 # define atomic_dec_8(X)  __sync_fetch_and_sub((X), 1)
  36 # define atomic_dec_16(X) __sync_fetch_and_sub((X), 1)
  37 # define atomic_dec_32(X) __sync_fetch_and_sub((X), 1)
  38 # define atomic_dec_size(X) __sync_fetch_and_sub((X), 1)
  39 /* The same as above, but these return the new value instead of void */
  40 # define atomic_add_8_nv(X, Y)  __sync_fetch_and_add((X), (Y))
  41 # define atomic_add_16_nv(X, Y) __sync_fetch_and_add((X), (Y))
  42 # define atomic_add_32_nv(X, Y) __sync_fetch_and_add((X), (Y))
  43 # define atomic_add_size_nv(X, Y) __sync_fetch_and_add((X), (Y))
  44 # define atomic_dec_8_nv(X)  __sync_fetch_and_sub((X), 1)
  45 # define atomic_dec_16_nv(X) __sync_fetch_and_sub((X), 1)
  46 # define atomic_dec_32_nv(X) __sync_fetch_and_sub((X), 1)
  47 # define atomic_dec_size_nv(X) __sync_fetch_and_sub((X), 1)
  48 #else
  49 #warning "Atomic operators not found so memslap will not work correctly"
  50 # define atomic_add_8(X, Y)
  51 # define atomic_add_16(X, Y)
  52 # define atomic_add_32(X, Y)
  53 # define atomic_add_size(X, Y)
  54 # define atomic_dec_8(X)
  55 # define atomic_dec_16(X)
  56 # define atomic_dec_32(X)
  57 # define atomic_dec_size(X)
  58 /* The same as above, but these return the new value instead of void */
  59 # define atomic_add_8_nv(X, Y)
  60 # define atomic_add_16_nv(X, Y)
  61 # define atomic_add_32_nv(X, Y)
  62 # define atomic_add_size_nv(X, Y)
  63 # define atomic_dec_8_nv(X)
  64 # define atomic_dec_16_nv(X)
  65 # define atomic_dec_32_nv(X)
  66 # define atomic_dec_size_nv(X)
  67 #endif /* defined(__SUNPRO_C) */
  68
  69 #endif /* CLIENTS_MS_ATOMIC_H */