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CppUtils
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import CppUtils.Thread.UniqueLocker;orimport CppUtils;

CppUtils::Thread::MultipleAccessor<class... Lockers>

STRUCT

RAII structure locking multiple lockers simultaneously without deadlocks.

Description

Section titled “Description”

Uses std::scoped_lock internally to acquire all locks atomically in a deadlock-free manner, regardless of the order lockers are passed across different threads.

auto account0 = CppUtils::Thread::UniqueLocker<Account>{};
auto account1 = CppUtils::Thread::UniqueLocker<Account>{};


{
    auto lockBoth = CppUtils::Thread::MultipleAccessor{account0, account1};
    auto& [firstAccount, secondAccount] = lockBoth.values;
    firstAccount.withdraw(100);
    secondAccount.deposit(100);
}
Template parameterDescription
LockersVariadic list of locker types to lock simultaneously.

Public methods & functions

Section titled “Public methods & functions”
constexpr MultipleAccessor::MultipleAccessor(Lockers&... lockers);

Locks all provided lockers atomically.

ParameterDescription
lockersVariadic references to lockers to lock.

Public attributes

Section titled “Public attributes”

values

Section titled “values”
std::tuple< decltype(std::declval< Lockers >().m_value)&... > values;