65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// Date: Mon. Nov 7 14:47:36 CST 2011
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#ifndef BUTIL_THREAD_LOCAL_H
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#define BUTIL_THREAD_LOCAL_H
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#include <new> // std::nothrow
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#include <cstddef> // NULL
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#include "butil/macros.h"
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#ifdef _MSC_VER
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#define BAIDU_THREAD_LOCAL __declspec(thread)
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#else
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#define BAIDU_THREAD_LOCAL __thread
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#endif // _MSC_VER
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namespace butil {
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// Get a thread-local object typed T. The object will be default-constructed
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// at the first call to this function, and will be deleted when thread
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// exits.
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template <typename T> inline T* get_thread_local();
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// |fn| or |fn(arg)| will be called at caller's exit. If caller is not a
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// thread, fn will be called at program termination. Calling sequence is LIFO:
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// last registered function will be called first. Duplication of functions
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// are not checked. This function is often used for releasing thread-local
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// resources declared with __thread which is much faster than
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// pthread_getspecific or boost::thread_specific_ptr.
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// Returns 0 on success, -1 otherwise and errno is set.
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int thread_atexit(void (*fn)());
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int thread_atexit(void (*fn)(void*), void* arg);
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// Remove registered function, matched functions will not be called.
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void thread_atexit_cancel(void (*fn)());
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void thread_atexit_cancel(void (*fn)(void*), void* arg);
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// Delete the typed-T object whose address is `arg'. This is a common function
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// to thread_atexit.
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template <typename T> void delete_object(void* arg) {
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delete static_cast<T*>(arg);
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}
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} // namespace butil
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#include "thread_local_inl.h"
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#endif // BUTIL_THREAD_LOCAL_H
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