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https://github.com/Expand-sys/CCash
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🎨 formatting
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EntireTwix
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175976e796
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16494f971e
1 changed files with 64 additions and 50 deletions
114
src/bank.cpp
114
src/bank.cpp
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@ -2,8 +2,6 @@
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using namespace drogon;
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#define INLINE __attribute__((always_inline)) inline
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INLINE bool ValidUsrname(const std::string &name) noexcept
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{
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if (name.size() < min_name_size || name.size() > max_name_size)
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@ -68,14 +66,16 @@ bool Bank::GetChangeState() const noexcept
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BankResponse Bank::GetBal(const std::string &name) const noexcept
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{
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static thread_local uint32_t res = 0;
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users.if_contains(name, [](const User &u) { res = u.balance + 1; });
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users.if_contains(name, [](const User &u)
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{ res = u.balance + 1; });
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return res ? BankResponse(k200OK, std::to_string(res - 1)) : BankResponse(k404NotFound, "\"User not found\"");
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}
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BankResponse Bank::GetLogs(const std::string &name) noexcept
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{
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#if MAX_LOG_SIZE > 0
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BankResponse res;
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if (!users.modify_if(name, [&res](User &u) { res = BankResponse(k200OK, u.log.GetLog()); }))
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if (!users.modify_if(name, [&res](User &u)
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{ res = BankResponse(k200OK, u.log.GetLog()); }))
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{
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return BankResponse(k404NotFound, "\"User not found\"");
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}
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@ -106,36 +106,40 @@ BankResponse Bank::SendFunds(const std::string &a_name, const std::string &b_nam
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std::shared_lock<std::shared_mutex> lock{save_lock}; //about 10% of this function's cost
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#if MAX_LOG_SIZE > 0
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static thread_local Transaction temp(a_name, b_name, amount);
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if (!users.modify_if(a_name, [amount](User &a) {
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if (!users.modify_if(a_name, [amount](User &a)
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{
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#else
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if (!users.modify_if(a_name, [&state, amount](User &a) {
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if (!users.modify_if(a_name, [&state, amount](User &a)
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{
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#endif
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//if A can afford it
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if (a.balance < amount)
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{
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state = BankResponse(k400BadRequest, "\"Sender has insufficient funds\"");
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}
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else
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{
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a.balance -= amount;
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//if A can afford it
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if (a.balance < amount)
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{
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state = BankResponse(k400BadRequest, "\"Sender has insufficient funds\"");
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}
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else
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{
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a.balance -= amount;
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#if MAX_LOG_SIZE > 0
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a.log.AddTrans(Transaction(temp)); //about 40% of this function's cost
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a.log.AddTrans(Transaction(temp)); //about 40% of this function's cost
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#endif
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state = BankResponse(k200OK, "\"Transfer successful!\"");
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}
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}))
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state = BankResponse(k200OK, "\"Transfer successful!\"");
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}
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}))
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{
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return {k404NotFound, "\"Sender does not exist\""};
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}
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if (state.first == k200OK)
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{
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#if MAX_LOG_SIZE > 0
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users.modify_if(b_name, [amount](User &b) {
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b.balance += amount;
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b.log.AddTrans(std::move(temp));
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}); //about 40% of this function's cost
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users.modify_if(b_name, [amount](User &b)
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{
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b.balance += amount;
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b.log.AddTrans(std::move(temp));
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}); //about 40% of this function's cost
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#else
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users.modify_if(b_name, [amount](User &b) { b.balance += amount; });
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users.modify_if(b_name, [amount](User &b)
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{ b.balance += amount; });
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#endif
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#if CONSERVATIVE_DISK_SAVE
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#if MULTI_THREADED
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@ -150,13 +154,15 @@ BankResponse Bank::SendFunds(const std::string &a_name, const std::string &b_nam
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bool Bank::VerifyPassword(const std::string &name, std::string_view &&attempt) const noexcept
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{
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static thread_local bool res = false;
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users.if_contains(name, [&attempt](const User &u) { res = (u.password == xxHashStringGen{}(std::move(attempt))); });
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users.if_contains(name, [&attempt](const User &u)
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{ res = (u.password == xxHashStringGen{}(std::move(attempt))); });
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return res;
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}
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void Bank::ChangePassword(const std::string &name, std::string &&new_pass) noexcept
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{
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users.modify_if(name, [&new_pass](User &u) { u.password = xxHashStringGen{}(new_pass); });
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users.modify_if(name, [&new_pass](User &u)
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{ u.password = xxHashStringGen{}(new_pass); });
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#if CONSERVATIVE_DISK_SAVE
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#if MULTI_THREADED
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save_flag.SetChangesOn();
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@ -167,7 +173,8 @@ void Bank::ChangePassword(const std::string &name, std::string &&new_pass) noexc
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}
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BankResponse Bank::SetBal(const std::string &name, uint32_t amount) noexcept
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{
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if (users.modify_if(name, [amount](User &u) { u.balance = amount; }))
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if (users.modify_if(name, [amount](User &u)
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{ u.balance = amount; }))
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{
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#if CONSERVATIVE_DISK_SAVE
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#if MULTI_THREADED
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@ -189,7 +196,8 @@ BankResponse Bank::ImpactBal(const std::string &name, int64_t amount) noexcept
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{
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return {k400BadRequest, "\"Amount cannot be 0\""};
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}
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if (users.modify_if(name, [amount](User &u) { u.balance < (amount * -1) ? u.balance = 0 : u.balance += amount; }))
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if (users.modify_if(name, [amount](User &u)
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{ u.balance < (amount * -1) ? u.balance = 0 : u.balance += amount; }))
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{
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#if CONSERVATIVE_DISK_SAVE
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#if MULTI_THREADED
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@ -243,7 +251,9 @@ BankResponse Bank::DelUser(const std::string &name) noexcept
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std::shared_lock<std::shared_mutex> lock{save_lock};
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#if RETURN_ON_DEL
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uint32_t bal;
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if (users.if_contains(name, [this, &bal](const User &u) { bal = u.balance; }) && bal)
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if (users.if_contains(name, [this, &bal](const User &u)
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{ bal = u.balance; }) &&
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bal)
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{
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users.modify_if(return_account, [ this, bal ](User & u))
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{
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@ -269,36 +279,40 @@ BankResponse Bank::DelUser(const std::string &name) noexcept
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}
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void Bank::Save()
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{
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static thread_local Json::Value temp;
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if (GetChangeState())
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{
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static thread_local Json::Value temp;
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//loading info into json temp
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{
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std::unique_lock<std::shared_mutex> lock{save_lock};
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for (const auto &u : users)
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//loading info into json temp
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{
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//we know it contains this key but we call this func to grab mutex
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users.if_contains(u.first, [&u](const User &u_val) { temp[u.first] = u_val.Serialize(); });
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std::unique_lock<std::shared_mutex> lock{save_lock};
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for (const auto &u : users)
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{
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//we know it contains this key but we call this func to grab mutex
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users.if_contains(u.first, [&u](const User &u_val)
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{ temp[u.first] = u_val.Serialize(); });
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}
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}
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if (temp.isNull())
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{
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throw std::invalid_argument("Saving Failed\n");
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}
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else
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{
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static thread_local std::ofstream user_save(users_location);
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static thread_local Json::StreamWriterBuilder builder;
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static thread_local const std::unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());
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writer->write(temp, &user_save);
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user_save.close();
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}
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}
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if (temp.isNull())
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{
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throw std::invalid_argument("Saving Failed\n");
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}
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else
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{
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static thread_local std::ofstream user_save(users_location);
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static thread_local Json::StreamWriterBuilder builder;
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static thread_local const std::unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());
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writer->write(temp, &user_save);
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user_save.close();
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}
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#if CONSERVATIVE_DISK_SAVE
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#if MULTI_THREADED
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save_flag.SetChangesOff();
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save_flag.SetChangesOff();
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#else
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save_flag = true;
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save_flag = true;
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#endif
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#endif
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}
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}
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//NOT THREAD SAFE, BY NO MEANS SHOULD THIS BE CALLED WHILE RECEIEVING REQUESTS
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