135 lines
4.2 KiB
C
135 lines
4.2 KiB
C
/* $NetBSD: baselocl.h,v 1.2 2011/04/16 17:45:44 martin Exp $ */
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/*
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* Copyright (c) 2010 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Portions Copyright (c) 2010 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <limits.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "heimqueue.h"
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#include "heim_threads.h"
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#include <krb5/heimbase.h>
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#include "heimbasepriv.h"
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#ifdef HAVE_DISPATCH_DISPATCH_H
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#include <dispatch/dispatch.h>
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#endif
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#if defined(USE_ATOMIC_INCDEC)
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#include <sys/atomic.h>
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#define heim_base_atomic_inc(x) atomic_inc_32_nv((x))
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#define heim_base_atomic_dec(x) atomic_dec_32_nv((x))
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#define heim_base_atomic_type uint32_t
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#define heim_base_atomic_max UINT32_MAX
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#define heim_base_exchange_pointer(t,v) atomic_swap_ptr((t), (v))
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#elif defined(__GNUC__) && defined(HAVE___SYNC_ADD_AND_FETCH)
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#define heim_base_atomic_inc(x) __sync_add_and_fetch((x), 1)
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#define heim_base_atomic_dec(x) __sync_sub_and_fetch((x), 1)
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#define heim_base_atomic_type unsigned int
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#define heim_base_atomic_max UINT_MAX
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#define heim_base_exchange_pointer(t,v) __sync_lock_test_and_set((t), (v))
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#elif defined(_WIN32)
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#define heim_base_atomic_inc(x) InterlockedIncrement(x)
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#define heim_base_atomic_dec(x) InterlockedDecrement(x)
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#define heim_base_atomic_type LONG
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#define heim_base_atomic_max MAXLONG
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#define heim_base_exchange_pointer(t,v) InterlockedExchangePointer((t),(v))
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#else
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#define HEIM_BASE_NEED_ATOMIC_MUTEX 1
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extern HEIMDAL_MUTEX _heim_base_mutex;
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#define heim_base_atomic_type unsigned int
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static inline heim_base_atomic_type
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heim_base_atomic_inc(heim_base_atomic_type *x)
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{
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heim_base_atomic_type t;
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HEIMDAL_MUTEX_lock(&_heim_base_mutex);
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t = ++(*x);
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HEIMDAL_MUTEX_unlock(&_heim_base_mutex);
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return t;
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}
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static inline heim_base_atomic_type
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heim_base_atomic_dec(heim_base_atomic_type *x)
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{
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heim_base_atomic_type t;
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HEIMDAL_MUTEX_lock(&_heim_base_mutex);
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t = --(*x);
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HEIMDAL_MUTEX_unlock(&_heim_base_mutex);
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return t;
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}
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#define heim_base_atomic_max UINT_MAX
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#endif
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/* tagged strings/object/XXX */
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#define heim_base_is_tagged(x) (((uintptr_t)(x)) & 0x3)
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#define heim_base_is_tagged_object(x) ((((uintptr_t)(x)) & 0x3) == 1)
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#define heim_base_make_tagged_object(x, tid) \
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((heim_object_t)((((uintptr_t)(x)) << 5) | ((tid) << 2) | 0x1))
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#define heim_base_tagged_object_tid(x) ((((uintptr_t)(x)) & 0x1f) >> 2)
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#define heim_base_tagged_object_value(x) (((uintptr_t)(x)) >> 5)
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/*
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*
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*/
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#undef HEIMDAL_NORETURN_ATTRIBUTE
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#define HEIMDAL_NORETURN_ATTRIBUTE
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#undef HEIMDAL_PRINTF_ATTRIBUTE
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#define HEIMDAL_PRINTF_ATTRIBUTE(x)
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