[89] | 1 | /*
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more
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| 3 | * contributor license agreements. See the NOTICE file distributed with
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| 4 | * this work for additional information regarding copyright ownership.
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0
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| 6 | * (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 |
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| 18 | #ifndef _LOG4CXX_HELPERS_CONDITION_H
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| 19 | #define _LOG4CXX_HELPERS_CONDITION_H
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| 20 |
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| 21 | #include <log4cxx/log4cxx.h>
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| 22 | #include <log4cxx/helpers/mutex.h>
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| 23 |
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| 24 | extern "C" {
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| 25 | struct apr_thread_cond_t;
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| 26 | }
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| 27 |
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| 28 | namespace log4cxx
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| 29 | {
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| 30 | namespace helpers
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| 31 | {
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| 32 | class Pool;
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| 33 |
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| 34 | /**
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| 35 | * This class provides a means for one thread to suspend exception until
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| 36 | * notified by another thread to resume. This class should have
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| 37 | * similar semantics to java.util.concurrent.locks.Condition.
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| 38 | */
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| 39 | class LOG4CXX_EXPORT Condition
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| 40 | {
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| 41 | public:
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| 42 | /**
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| 43 | * Create new instance.
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| 44 | * @param p pool on which condition will be created. Needs to be
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| 45 | * longer-lived than created instance.
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| 46 | */
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| 47 | Condition(log4cxx::helpers::Pool& p);
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| 48 | /**
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| 49 | * Destructor.
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| 50 | */
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| 51 | ~Condition();
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| 52 | /**
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| 53 | * Signal all waiting threads.
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| 54 | */
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| 55 | log4cxx_status_t signalAll();
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| 56 | /**
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| 57 | * Await signaling of condition.
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| 58 | * @param lock lock associated with condition, calling thread must
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| 59 | * own lock. Lock will be released while waiting and reacquired
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| 60 | * before returning from wait.
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| 61 | * @throws InterruptedException if thread is interrupted.
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| 62 | */
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| 63 | void await(Mutex& lock);
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| 64 |
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| 65 | private:
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| 66 | apr_thread_cond_t* condition;
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| 67 | Condition(const Condition&);
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| 68 | Condition& operator=(const Condition&);
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| 69 | };
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| 70 | } // namespace helpers
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| 71 | } // namespace log4cxx
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| 72 |
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| 73 | #endif //_LOG4CXX_HELPERS_CONDITION_H
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