boost之内存池使用实例
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boost之内存池使用实例
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需要說明的就是初始化的時候指定的是內存池分配內存塊的大小,而且內存池是非線程安全的,多線程要加鎖
#ifndef BUFFER_POOL_H #define BUFFER_POOL_H#include "boost_comm.h" using namespace boost;namespace seemmo {class buffer_pool{public:buffer_pool(int chunk_size);~buffer_pool();protected:static boost::mutex mtx_;static buffer_pool *instance(){boost::unique_lock<boost::mutex> wlock(mtx_);static buffer_pool inst(1024);return &inst;}public:static char *comm_sz1024_buffer(){boost::unique_lock<boost::mutex> wlock(instance()->mtx_1_);return (char *)instance()->m_buffer_bp.malloc();}static void comm_sz1024_free(void *p){boost::unique_lock<boost::mutex> wlock(instance()->mtx_1_);instance()->m_buffer_bp.free(p);}static unsigned char *bin_value_alloc(){boost::unique_lock<boost::mutex> wlock(instance()->mtx_2_);return (unsigned char *)instance()->m_bin_value_.malloc();}static void bin_value_free(void *p){boost::unique_lock<boost::mutex> wlock(instance()->mtx_2_);instance()->m_bin_value_.free(p);}protected:boost::mutex mtx_1_;boost::pool<> m_buffer_bp;boost::mutex mtx_2_;boost::pool<> m_bin_value_;private:}; }#endif // BUFFER_POOL_H#include "buffer_pool.h"#include "config.h"namespace seemmo {boost::mutex buffer_pool::mtx_;buffer_pool::buffer_pool(int chunk_size):m_buffer_bp(BUFFER_POOL_COMM_CHUNK_SIZE),//1km_bin_value_(BUFFER_POOL_BIN_CHUNK_SIZE)//256k{}buffer_pool::~buffer_pool(){} }
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