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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_arch_atomic.h"
APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
{
return APR_SUCCESS;
}
APR_DECLARE(apr_uint32_t) apr_atomic_add32(volatile apr_uint32_t *mem, apr_uint32_t val)
{
#if (defined(_M_IA64) || defined(_M_AMD64))
return InterlockedExchangeAdd(mem, val);
#else
return InterlockedExchangeAdd((long volatile *)mem, val);
#endif
}
/* Of course we want the 2's compliment of the unsigned value, val */
#ifdef _MSC_VER
#pragma warning(disable: 4146)
#endif
APR_DECLARE(void) apr_atomic_sub32(volatile apr_uint32_t *mem, apr_uint32_t val)
{
#if (defined(_M_IA64) || defined(_M_AMD64))
InterlockedExchangeAdd(mem, -val);
#else
InterlockedExchangeAdd((long volatile *)mem, -val);
#endif
}
APR_DECLARE(apr_uint32_t) apr_atomic_inc32(volatile apr_uint32_t *mem)
{
/* we return old value, win32 returns new value :( */
#if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
return InterlockedIncrement(mem) - 1;
#else
return InterlockedIncrement((long volatile *)mem) - 1;
#endif
}
APR_DECLARE(int) apr_atomic_dec32(volatile apr_uint32_t *mem)
{
#if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
return InterlockedDecrement(mem);
#else
return InterlockedDecrement((long volatile *)mem);
#endif
}
APR_DECLARE(void) apr_atomic_set32(volatile apr_uint32_t *mem, apr_uint32_t val)
{
#if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
InterlockedExchange(mem, val);
#else
InterlockedExchange((long volatile *)mem, val);
#endif
}
APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem)
{
return *mem;
}
APR_DECLARE(apr_uint32_t) apr_atomic_cas32(volatile apr_uint32_t *mem, apr_uint32_t with,
apr_uint32_t cmp)
{
#if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
return InterlockedCompareExchange(mem, with, cmp);
#else
return InterlockedCompareExchange((long volatile *)mem, with, cmp);
#endif
}
APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val)
{
#if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
return InterlockedExchange(mem, val);
#else
return InterlockedExchange((long volatile *)mem, val);
#endif
}
APR_DECLARE(void *) apr_atomic_casptr(void *volatile *mem, void *with, const void *cmp)
{
return InterlockedCompareExchangePointer(mem, with, (void*)cmp);
}
APR_DECLARE(void*) apr_atomic_xchgptr(void *volatile *mem, void *with)
{
return InterlockedExchangePointer(mem, with);
}
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