tun2socks 0.0.1

High performance tun2socks
Documentation 
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/*
 ============================================================================
 Name        : hev-task-aide.c
 Author      : Heiher <r@hev.cc>
 Copyright   : Copyright (c) 2022 everyone.
 Description : Aide
 ============================================================================
 */

#include <poll.h>
#include <errno.h>
#include <unistd.h>

#ifdef ENABLE_PTHREAD
#include <pthread.h>
#endif

#include "kern/task/hev-task-private.h"
#include "kern/io/hev-task-io-reactor.h"
#include "lib/io/basic/hev-task-io.h"

#include "hev-task-aide.h"

static HevTaskIOReactor *reactor;

#ifdef ENABLE_PTHREAD

static pthread_t thread;
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

static void *
hev_task_aide_entry (void *data)
{
    pthread_mutex_lock (&mutex);
    reactor = hev_task_io_reactor_new ();
    pthread_cond_signal (&cond);
    pthread_mutex_unlock (&mutex);

    for (;;) {
        HevTaskIOReactorWaitEvent events[256];
        int i, count;

        count = hev_task_io_reactor_wait (reactor, events, 256, -1);

        for (i = 0; i < count; i++) {
            HevTaskAideWork *work;
            unsigned int revents;

            work = hev_task_io_reactor_wait_event_get_data (&events[i]);
            revents = hev_task_io_reactor_wait_event_get_events (&events[i]);

            work->handler (revents, work->data);
        }
    }

    return NULL;
}

#endif /* !ENABLE_PTHREAD */

int
hev_task_aide_init (void)
{
    int res = -1;

#ifdef ENABLE_PTHREAD

    if (reactor)
        return 0;

    pthread_mutex_lock (&mutex);
    if (!reactor) {
        res = pthread_create (&thread, NULL, hev_task_aide_entry, NULL);
        if (0 == res) {
            while (!reactor)
                pthread_cond_wait (&cond, &mutex);
        }
    }
    pthread_mutex_unlock (&mutex);

#endif /* !ENABLE_PTHREAD */

    return res;
}

int
hev_task_aide_add (HevTaskAideWork *work)
{
    HevTaskIOReactorSetupEvent revents[HEV_TASK_IO_REACTOR_EVENT_GEN_MAX];
    int count;

    count = hev_task_io_reactor_setup_event_gen (
        revents, work->fd, HEV_TASK_IO_REACTOR_OP_ADD, work->events, work);

    return hev_task_io_reactor_setup (reactor, revents, count);
}

int
hev_task_aide_del (HevTaskAideWork *work)
{
    HevTaskIOReactorSetupEvent revents[HEV_TASK_IO_REACTOR_EVENT_GEN_MAX];
    int count;

    count = hev_task_io_reactor_setup_event_gen (
        revents, work->fd, HEV_TASK_IO_REACTOR_OP_DEL, 0, NULL);

    return hev_task_io_reactor_setup (reactor, revents, count);
}