#ifndef ucoo_utils_pool_hh #define ucoo_utils_pool_hh // ucoolib - Microcontroller object oriented library. {{{ // // Copyright (C) 2015 Nicolas Schodet // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. // // }}} #include #include namespace ucoo { /// Store an object, or a pointer to next free storage. template union PoolStorage { /// Object in pool. T object; /// If object is not allocated, this is a pointer to the next free object, /// or nullptr if this is the last one. PoolStorage *next_free; /// Due to union, constructor must be explicit. PoolStorage () { } /// Due to union, destructor must be explicit. ~PoolStorage () { } }; /// Pool of statically allocated object. template class Pool { public: /// Constructor, initialise the pool. Pool (); /// Destructor, check that all objects are destroyed. ~Pool (); /// Create and construct a new object. template T *construct (Args&&... args); /// Destroy an object created from this pool and call its destructor. void destroy (T *object); private: /// Pool storage. std::array, size> pool_; /// Pointer to the next free storage, or nullptr if pool is full. PoolStorage *next_free_; }; } // namespace ucoo #include "pool.tcc" #endif // ucoo_utils_pool_hh