lokinet/llarp/util/threadpool.h
2019-08-12 16:52:58 +01:00

108 lines
2.3 KiB
C++

#ifndef LLARP_THREADPOOL_H
#define LLARP_THREADPOOL_H
#include <util/queue.hpp>
#include <util/string_view.hpp>
#include <util/thread_pool.hpp>
#include <util/threading.hpp>
#include <absl/base/thread_annotations.h>
#include <memory>
#include <queue>
struct llarp_threadpool
{
std::unique_ptr< llarp::thread::ThreadPool > impl;
std::unique_ptr< llarp::thread::Queue< std::function< void(void) > > > jobs;
const pid_t callingPID;
llarp_threadpool(int workers, llarp::string_view name)
: impl(std::make_unique< llarp::thread::ThreadPool >(workers,
workers * 128, name))
, jobs(nullptr)
, callingPID(0)
{
}
llarp_threadpool()
: jobs(new llarp::thread::Queue< std::function< void() > >(128))
, callingPID(llarp::util::GetPid())
{
jobs->enable();
}
size_t
size() const
{
if(jobs)
return jobs->size();
return 0;
}
bool
QueueFunc(std::function< void(void) > f)
{
if(impl)
return impl->tryAddJob(f);
return jobs->tryPushBack(f) == llarp::thread::QueueReturn::Success;
}
};
struct llarp_threadpool *
llarp_init_threadpool(int workers, const char *name);
/// for single process mode
struct llarp_threadpool *
llarp_init_same_process_threadpool();
void
llarp_free_threadpool(struct llarp_threadpool **tp);
using llarp_thread_work_func = void (*)(void *);
/** job to be done in worker thread */
struct llarp_thread_job
{
/** user data to pass to work function */
void *user{nullptr};
/** called in threadpool worker thread */
llarp_thread_work_func work{nullptr};
#ifdef __cplusplus
llarp_thread_job(void *u, llarp_thread_work_func w) : user(u), work(w)
{
}
llarp_thread_job() = default;
#endif
};
/// for single process mode
void
llarp_threadpool_tick(struct llarp_threadpool *tp);
void
llarp_threadpool_queue_job(struct llarp_threadpool *tp,
struct llarp_thread_job j);
#ifdef __cplusplus
void
llarp_threadpool_queue_job(struct llarp_threadpool *tp,
std::function< void() > func);
#endif
void
llarp_threadpool_start(struct llarp_threadpool *tp);
void
llarp_threadpool_stop(struct llarp_threadpool *tp);
void
llarp_threadpool_join(struct llarp_threadpool *tp);
void
llarp_threadpool_wait(struct llarp_threadpool *tp);
#endif