diff options
Diffstat (limited to 'atomic/win32')
| -rw-r--r-- | atomic/win32/apr_atomic.c | 115 | ||||
| -rw-r--r-- | atomic/win32/apr_atomic64.c | 82 |
2 files changed, 197 insertions, 0 deletions
diff --git a/atomic/win32/apr_atomic.c b/atomic/win32/apr_atomic.c new file mode 100644 index 0000000..b29ea59 --- /dev/null +++ b/atomic/win32/apr_atomic.c @@ -0,0 +1,115 @@ +/* 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) +{ +#if defined (NEED_ATOMICS_GENERIC64) + return apr__atomic_generic64_init(p); +#else + return APR_SUCCESS; +#endif +} + +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 *)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 *)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 *)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 *)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*)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*)mem, with, cmp); +#endif +} + +APR_DECLARE(void *) apr_atomic_casptr(volatile void **mem, void *with, const void *cmp) +{ +#if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED) + return InterlockedCompareExchangePointer((void* volatile*)mem, with, (void*)cmp); +#else + return InterlockedCompareExchangePointer((void**)mem, with, (void*)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 *)mem, val); +#endif +} + +APR_DECLARE(void*) apr_atomic_xchgptr(volatile void **mem, void *with) +{ + return InterlockedExchangePointer((void**)mem, with); +} diff --git a/atomic/win32/apr_atomic64.c b/atomic/win32/apr_atomic64.c new file mode 100644 index 0000000..a9139d9 --- /dev/null +++ b/atomic/win32/apr_atomic64.c @@ -0,0 +1,82 @@ +/* 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.h" +#include "apr_atomic.h" +#include "apr_thread_mutex.h" + +/* Of course we want the 2's compliment of the unsigned value, val */ +#ifdef _MSC_VER +#pragma warning(disable: 4146) +#endif + +APR_DECLARE(apr_uint64_t) apr_atomic_add64(volatile apr_uint64_t *mem, apr_uint64_t val) +{ + return InterlockedExchangeAdd64((volatile LONG64 *)mem, val); +} + +APR_DECLARE(void) apr_atomic_sub64(volatile apr_uint64_t *mem, apr_uint64_t val) +{ + InterlockedExchangeAdd64((volatile LONG64 *)mem, -val); +} + +APR_DECLARE(apr_uint64_t) apr_atomic_inc64(volatile apr_uint64_t *mem) +{ + /* we return old value, win64 returns new value :( */ + return InterlockedIncrement64((volatile LONG64 *)mem) - 1; +} + +APR_DECLARE(int) apr_atomic_dec64(volatile apr_uint64_t *mem) +{ + return !!InterlockedDecrement64((volatile LONG64 *)mem); +} + +APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val) +{ +#if defined(_M_X64) + /* https://docs.microsoft.com/en-us/windows/win32/sync/interlocked-variable-access + * "Simple reads and writes to properly aligned 64-bit variables are atomic + * on 64-bit Windows."*/ + *mem = val; +#else + InterlockedExchange64((volatile LONG64 *)mem, val); +#endif +} + +APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem) +{ +#if defined(_M_X64) + /* https://docs.microsoft.com/en-us/windows/win32/sync/interlocked-variable-access + * "Simple reads and writes to properly aligned 64-bit variables are atomic + * on 64-bit Windows."*/ + return *mem; +#else + /* 64-bit read is not atomic on 32-bit platform: use InterlockedCompareExchange + to perform atomic read. */ + return InterlockedCompareExchange64((volatile LONG64 *)mem, 0, 0); +#endif +} + +APR_DECLARE(apr_uint64_t) apr_atomic_cas64(volatile apr_uint64_t *mem, apr_uint64_t with, + apr_uint64_t cmp) +{ + return InterlockedCompareExchange64((volatile LONG64 *)mem, with, cmp); +} + +APR_DECLARE(apr_uint64_t) apr_atomic_xchg64(volatile apr_uint64_t *mem, apr_uint64_t val) +{ + return InterlockedExchange64((volatile LONG64 *)mem, val); +} |