Method await_suspend

source/threads/async_condition_variable.cpp:18–25

cv_awaiter::cv_awaiter(async_condition_variable& parent, scoped_async_lock& lock) noexcept : m_parent(parent), m_lock(lock) {}

void cv_awaiter::await_suspend(details::coroutine_handle<void> caller_handle) {
    m_caller_handle = caller_handle;

    std::unique_lock<std::mutex> lock(m_parent.m_lock);
    m_lock.unlock();

    m_parent.m_awaiters.push_back(*this);
}

void cv_awaiter::resume() noexcept {
    assert(static_cast<bool>(m_caller_handle));