/*
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* =====================================================================================
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*
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* Filename: bh_util.h
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*
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* Description:
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*
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* Version: 1.0
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* Created: 2021年03月13日 10时41分07秒
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* Revision: none
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* Compiler: gcc
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*
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* Author: lichao (),
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* Organization:
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*
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* =====================================================================================
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*/
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#ifndef BH_UTIL_SOXWOK67
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#define BH_UTIL_SOXWOK67
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#include "macro.h"
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#include <functional>
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#include <mutex>
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#include <stdint.h>
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inline uint16_t Get8(const void *p)
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{
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return static_cast<const uint8_t *>(p)[0];
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}
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inline void Put8(void *p, uint8_t u)
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{
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static_cast<uint8_t *>(p)[0] = u;
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}
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inline uint16_t Get16(const void *p)
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{
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auto ptr = static_cast<const uint8_t *>(p);
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return (((uint16_t) ptr[0]) << 8u) |
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(((uint16_t) ptr[1]));
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}
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inline void Put16(void *p, uint16_t u)
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{
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auto ptr = static_cast<uint8_t *>(p);
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ptr[0] = (uint8_t) (u >> 8u);
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ptr[1] = (uint8_t) (u);
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}
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inline uint32_t Get32(const void *p)
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{
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auto ptr = static_cast<const uint8_t *>(p);
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return (((uint32_t) ptr[0]) << 24u) |
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(((uint32_t) ptr[1]) << 16u) |
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(((uint32_t) ptr[2]) << 8u) |
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(((uint32_t) ptr[3]));
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}
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inline void Put32(void *p, uint32_t u)
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{
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auto ptr = static_cast<uint8_t *>(p);
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ptr[0] = (uint8_t) (u >> 24u);
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ptr[1] = (uint8_t) (u >> 16u);
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ptr[2] = (uint8_t) (u >> 8u);
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ptr[3] = (uint8_t) (u);
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}
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inline uint64_t Get64(const void *p)
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{
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auto ptr = static_cast<const uint8_t *>(p);
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return (((uint64_t) ptr[0]) << 56u) |
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(((uint64_t) ptr[1]) << 48u) |
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(((uint64_t) ptr[2]) << 40u) |
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(((uint64_t) ptr[3]) << 32u) |
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(((uint64_t) ptr[4]) << 24u) |
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(((uint64_t) ptr[5]) << 16u) |
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(((uint64_t) ptr[6]) << 8u) |
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((uint64_t) ptr[7]);
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}
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inline void Put64(void *p, uint64_t u)
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{
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auto ptr = static_cast<uint8_t *>(p);
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ptr[0] = (uint8_t) (u >> 56);
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ptr[1] = (uint8_t) (u >> 48);
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ptr[2] = (uint8_t) (u >> 40u);
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ptr[3] = (uint8_t) (u >> 32);
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ptr[4] = (uint8_t) (u >> 24u);
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ptr[5] = (uint8_t) (u >> 16u);
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ptr[6] = (uint8_t) (u >> 8u);
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ptr[7] = (uint8_t) (u);
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}
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inline void PutInt(void *p, uint8_t u) { Put8(p, u); }
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inline void PutInt(void *p, uint16_t u) { Put16(p, u); }
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inline void PutInt(void *p, uint32_t u) { Put32(p, u); }
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inline void PutInt(void *p, uint64_t u) { Put64(p, u); }
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constexpr uint64_t MaskBits(int nbits) { return (uint64_t(1) << nbits) - 1; }
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class ExitCall
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{
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typedef std::function<void(void)> func_t;
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func_t m_func;
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public:
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explicit ExitCall(func_t f) :
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m_func(f) {}
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~ExitCall()
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{
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if (m_func) { m_func(); }
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}
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};
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template <class D, class M, class G = std::unique_lock<M>>
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class SyncedPtr
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{
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G lock_;
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D *p_ = nullptr;
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public:
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SyncedPtr(M &mtx, D &data) :
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lock_(mtx), p_(&data) {}
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SyncedPtr(SyncedPtr &&a)
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{
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lock_.swap(a.lock_);
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std::swap(p_, a.p_);
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}
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D *operator->() const { return p_; }
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D &operator*() const { return *p_; }
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};
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template <class T, class TMutex = std::mutex, class Lock = std::unique_lock<TMutex>>
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class Synced
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{
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typedef T Data;
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TMutex mutex_;
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Data data_;
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typedef SyncedPtr<Data, TMutex, Lock> Ptr;
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public:
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template <class... P>
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explicit Synced(const P &...p) :
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data_(p...) {}
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Ptr operator->() { return Ptr(mutex_, data_); }
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auto Apply(const auto &f)
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{
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Lock lk(mutex_);
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return f(data_);
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}
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};
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#endif /* end of include guard: BH_UTIL_SOXWOK67 */
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