123 lines
2.4 KiB
C++
123 lines
2.4 KiB
C++
#include "std_include.hpp"
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#include "context.hpp"
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#include "error.hpp"
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namespace ui_scripting::lua
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{
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scheduler::scheduler(sol::state& state)
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{
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auto task_handle_type = state.new_usertype<task_handle>("task_handle");
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task_handle_type["clear"] = [this](const task_handle& handle)
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{
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this->remove(handle);
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};
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}
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void scheduler::run_frame()
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{
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callbacks_.access([&](task_list& tasks)
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{
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this->merge_callbacks();
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for (auto i = tasks.begin(); i != tasks.end();)
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{
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const auto now = std::chrono::high_resolution_clock::now();
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const auto diff = now - i->last_call;
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if (diff < i->delay)
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{
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++i;
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continue;
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}
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i->last_call = now;
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if (!i->is_deleted)
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{
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handle_error(i->callback());
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}
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if (i->is_volatile || i->is_deleted)
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{
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i = tasks.erase(i);
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}
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else
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{
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++i;
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}
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}
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});
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}
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void scheduler::clear()
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{
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callbacks_.access([&](task_list& tasks)
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{
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new_callbacks_.access([&](task_list& new_tasks)
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{
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new_tasks.clear();
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tasks.clear();
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});
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});
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}
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task_handle scheduler::add(const sol::protected_function& callback, const long long milliseconds,
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const bool is_volatile)
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{
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return this->add(callback, std::chrono::milliseconds(milliseconds), is_volatile);
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}
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task_handle scheduler::add(const sol::protected_function& callback, const std::chrono::milliseconds delay,
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const bool is_volatile)
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{
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const uint64_t id = ++this->current_task_id_;
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task task;
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task.is_volatile = is_volatile;
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task.callback = callback;
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task.delay = delay;
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task.last_call = std::chrono::steady_clock::now();
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task.id = id;
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task.is_deleted = false;
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new_callbacks_.access([&task](task_list& tasks)
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{
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tasks.emplace_back(std::move(task));
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});
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return {id};
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}
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void scheduler::remove(const task_handle& handle)
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{
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auto mask_as_deleted = [&](task_list& tasks)
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{
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for (auto& task : tasks)
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{
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if (task.id == handle.id)
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{
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task.is_deleted = true;
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break;
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}
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}
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};
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callbacks_.access(mask_as_deleted);
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new_callbacks_.access(mask_as_deleted);
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}
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void scheduler::merge_callbacks()
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{
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callbacks_.access([&](task_list& tasks)
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{
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new_callbacks_.access([&](task_list& new_tasks)
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{
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tasks.insert(tasks.end(), std::move_iterator<task_list::iterator>(new_tasks.begin()),
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std::move_iterator<task_list::iterator>(new_tasks.end()));
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new_tasks = {};
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});
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});
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}
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}
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