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Viewing changes to src/os/unix/ngx_atomic.h

  • Committer: Package Import Robot
  • Author(s): Kartik Mistry
  • Date: 2013-04-25 12:51:45 UTC
  • mfrom: (1.3.28)
  • mto: (1.3.29) (15.1.2 experimental)
  • mto: This revision was merged to the branch mainline in revision 64.
  • Revision ID: package-import@ubuntu.com-20130425125145-ugl0wor6bq0u5eae
Tags: upstream-1.4.0
Import upstream version 1.4.0

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src/os/unix/ngx_atomic.h
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/*
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 * Copyright (C) Igor Sysoev
 
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 * Copyright (C) Nginx, Inc.
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 */
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#include <ngx_core.h>
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#if (NGX_DARWIN_ATOMIC)
 
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#if (NGX_HAVE_LIBATOMIC)
 
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#define AO_REQUIRE_CAS
 
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#include <atomic_ops.h>
 
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#define NGX_HAVE_ATOMIC_OPS  1
 
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typedef long                        ngx_atomic_int_t;
 
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typedef AO_t                        ngx_atomic_uint_t;
 
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typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
 
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#if (NGX_PTR_SIZE == 8)
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
 
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#else
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
 
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#endif
 
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#define ngx_atomic_cmp_set(lock, old, new)                                    \
 
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    AO_compare_and_swap(lock, old, new)
 
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#define ngx_atomic_fetch_add(value, add)                                      \
 
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    AO_fetch_and_add(value, add)
 
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#define ngx_memory_barrier()        AO_nop()
 
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#define ngx_cpu_pause()
 
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#elif (NGX_DARWIN_ATOMIC)
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/*
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 * use Darwin 8 atomic(3) and barrier(3) operations
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#include <libkern/OSAtomic.h>
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/* "bool" conflicts with perl's CORE/handy.h
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 * "true" and "false" conflict with nginx, and of course we can rename them,
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 * but we need to undef "bool" anyway
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 */
 
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/* "bool" conflicts with perl's CORE/handy.h */
 
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#if 0
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#undef bool
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#undef true
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#undef false
 
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#endif
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#define NGX_HAVE_ATOMIC_OPS  1
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typedef int64_t                     ngx_atomic_int_t;
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typedef uint64_t                    ngx_atomic_uint_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-9223372036854775808") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
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#define ngx_atomic_cmp_set(lock, old, new)                                    \
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    OSAtomicCompareAndSwap64Barrier(old, new, (int64_t *) lock)
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typedef int32_t                     ngx_atomic_int_t;
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typedef uint32_t                    ngx_atomic_uint_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-2147483648") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
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#define ngx_atomic_cmp_set(lock, old, new)                                    \
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    OSAtomicCompareAndSwap32Barrier(old, new, (int32_t *) lock)
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typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
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#else /* !(NGX_DARWIN) */
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#if ( __i386__ || __i386 )
 
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#elif (NGX_HAVE_GCC_ATOMIC)
 
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/* GCC 4.1 builtin atomic operations */
 
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#define NGX_HAVE_ATOMIC_OPS  1
 
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typedef long                        ngx_atomic_int_t;
 
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typedef unsigned long               ngx_atomic_uint_t;
 
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#if (NGX_PTR_SIZE == 8)
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
 
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#else
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
 
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#endif
 
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typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
 
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#define ngx_atomic_cmp_set(lock, old, set)                                    \
 
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    __sync_bool_compare_and_swap(lock, old, set)
 
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#define ngx_atomic_fetch_add(value, add)                                      \
 
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    __sync_fetch_and_add(value, add)
 
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#define ngx_memory_barrier()        __sync_synchronize()
 
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#if ( __i386__ || __i386 || __amd64__ || __amd64 )
 
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#define ngx_cpu_pause()             __asm__ ("pause")
 
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#else
 
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#define ngx_cpu_pause()
 
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#endif
 
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#elif ( __i386__ || __i386 )
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typedef int32_t                     ngx_atomic_int_t;
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typedef uint32_t                    ngx_atomic_uint_t;
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typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-2147483648") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
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#if ( __SUNPRO_C )
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typedef int64_t                     ngx_atomic_int_t;
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typedef uint64_t                    ngx_atomic_uint_t;
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typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-9223372036854775808") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
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#if ( __SUNPRO_C )
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typedef int64_t                     ngx_atomic_int_t;
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typedef uint64_t                    ngx_atomic_uint_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-9223372036854775808") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
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#else
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typedef int32_t                     ngx_atomic_int_t;
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typedef uint32_t                    ngx_atomic_uint_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-2147483648") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
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#endif
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typedef int64_t                     ngx_atomic_int_t;
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typedef uint64_t                    ngx_atomic_uint_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-9223372036854775808") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
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#else
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typedef int32_t                     ngx_atomic_int_t;
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typedef uint32_t                    ngx_atomic_uint_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-2147483648") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
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#endif
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#include "ngx_gcc_atomic_ppc.h"
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#endif
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#endif
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typedef int32_t                     ngx_atomic_int_t;
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typedef uint32_t                    ngx_atomic_uint_t;
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typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
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#define NGX_ATOMIC_T_LEN            sizeof("-2147483648") - 1
 
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#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
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static ngx_inline ngx_atomic_uint_t