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#include "kapi/interrupts.hpp"
#include <kstd/flat_map>
#include <kstd/print>
#include <kstd/vector>
#include <algorithm>
#include <cstdint>
namespace kapi::interrupts
{
namespace
{
auto constinit handlers = kstd::flat_map<std::uint32_t, kstd::vector<handler *>>{};
} // namespace
auto register_handler(std::uint32_t irq_number, handler & handler) -> void
{
if (handlers.contains(irq_number))
{
auto & handler_list = handlers.at(irq_number);
handler_list.push_back(&handler);
}
else
{
handlers.emplace(irq_number, kstd::vector{&handler});
}
}
auto unregister_handler(std::uint32_t irq_number, handler & handler) -> void
{
auto & handler_list = handlers.at(irq_number);
auto [first, last] = std::ranges::remove(handler_list, &handler);
handler_list.erase(first, last);
}
auto dispatch(std::uint32_t irq_number) -> status
{
if (!handlers.contains(irq_number))
{
kstd::println(kstd::print_sink::stderr, "[OS:interrupts] No handler for IRQ{}", irq_number);
return status::unhandled;
}
auto & handler_list = handlers.at(irq_number);
if (handler_list.empty())
{
kstd::println(kstd::print_sink::stderr, "[OS:interrupts] No handler for IRQ{}", irq_number);
return status::unhandled;
}
for (auto handler : handler_list)
{
if (handler && handler->handle_interrupt(irq_number) == status::handled)
{
return status::handled;
}
}
return status::unhandled;
}
} // namespace kapi::interrupts
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