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/*
* This source code is released into the public domain.
*/
module;
#include <iostream>
#include <ranges>
#include <string>
#include <vector>
import nihil;
export module liblfvm:vm;
import :vm_config;
namespace lfvm {
/*
* Create the bhyve arguments list for a VM configuration.
*/
auto get_bhyve_args(vm_config const &config) -> nihil::argv
{
using namespace std::literals;
auto args = std::vector<std::string>();
// UUID
args.emplace_back(std::format("-U {}", to_string(config.uuid())));
// CPUs
args.emplace_back(std::format("-c {}", config.ncpus()));
// Memory
args.emplace_back(std::format("-m {}", config.memory_size()));
if (config.destroy_on_poweroff())
args.emplace_back("-D"sv);
if (config.wire_memory())
args.emplace_back("-S"sv);
if (config.include_memory_in_core())
args.emplace_back("-C"sv);
if (config.yield_on_halt())
args.emplace_back("-H"sv);
if (config.exit_on_pause())
args.emplace_back("-P"sv);
if (config.rtc_is_utc())
args.emplace_back("-u"sv);
// VM name
args.emplace_back(config.name());
std::cerr << "args: [";
for (auto &&arg : args)
std::cerr << arg << ' ';
std::cerr << "]\n";
return nihil::argv(std::from_range, std::move(args));
}
/*
* Represents a VM which can be started and stopped.
* Destroying the VM object will also destroy the VM.
*/
export struct vm final {
// Create a new VM object. This doesn't create the actual VM.
vm(vm_config config)
: _config(std::move(config))
{
}
~vm() {
// TODO: Destroy the VM.
}
// Get the configuration for this VM.
auto config(this vm const &self) -> vm_config const &
{
return self._config;
}
// Start the VM and wait until bhyve exits.
auto run(this vm &self) -> void
{
auto argv = get_bhyve_args(self.config());
}
private:
vm_config _config;
};
} // namespace lfvm
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