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Diffstat (limited to 'cpp/common/concurrent/inc/APRBase.h')
-rw-r--r-- | cpp/common/concurrent/inc/APRBase.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/cpp/common/concurrent/inc/APRBase.h b/cpp/common/concurrent/inc/APRBase.h new file mode 100644 index 0000000000..e0b526faa1 --- /dev/null +++ b/cpp/common/concurrent/inc/APRBase.h @@ -0,0 +1,63 @@ +/* + * + * Copyright (c) 2006 The Apache Software Foundation + * + * Licensed 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. + * + */ +#ifndef _APRBase_ +#define _APRBase_ + +#include <string> +#include "apr_thread_mutex.h" +#include "apr_errno.h" + +namespace qpid { +namespace concurrent { + + /** + * Use of APR libraries necessitates explicit init and terminate + * calls. Any class using APR libs should obtain the reference to + * this singleton and increment on construction, decrement on + * destruction. This class can then correctly initialise apr + * before the first use and terminate after the last use. + */ + class APRBase{ + static APRBase* instance; + apr_pool_t* pool; + apr_thread_mutex_t* mutex; + int count; + + APRBase(); + ~APRBase(); + static APRBase* getInstance(); + bool _increment(); + void _decrement(); + public: + static void increment(); + static void decrement(); + }; + + //this is also a convenient place for a helper function for error checking: + void check(apr_status_t status, const std::string& file, const int line); + std::string get_desc(apr_status_t status); + +#define CHECK_APR_SUCCESS(A) check(A, __FILE__, __LINE__); + +} +} + + + + +#endif |