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#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <assert.h>
#include <pthread.h>
#include <sched.h>
#include <linux/bpf.h>
#include <linux/filter.h>
#include <evhtp/thread.h>
#include <evhtp/evhtp.h>
#define CPU__COUNT sysconf(_SC_NPROCESSORS_ONLN)
static int _init = 0;
static int _threads = 0;
struct cc__config {
char * host;
uint16_t port;
};
static void
dummy_eventcb_(int sock, short which, void * args)
{
(void)sock;
(void)which;
(void)args;
}
static void
process_request_(evhtp_request_t * req, void * arg)
{
(void)arg;
evbuffer_add_reference(req->buffer_out,
"test_default_cb\n", 16, NULL, NULL);
evhtp_send_reply(req, EVHTP_RES_OK);
}
static void
attach_cbpf_(int fd)
{
struct sock_filter code[] = {
{ BPF_LD | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU }, /* A = raw_smp_processor_id() */
{ BPF_RET | BPF_A, 0, 0, 0 }, /* return A */
};
struct sock_fprog p = {
.len = 2,
.filter = code,
};
if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_CBPF, &p,
sizeof(p)) == -1) {
fprintf(stderr, "failed to set SO_ATTACH_REUSEPORT_CBPF\n");
}
}
static void
htp_worker_init_(evthr_t * thread, void * args)
{
struct event_base * evbase;
struct cc__config * config;
struct evhtp * htp;
int core;
cpu_set_t cpu_set;
if (!(config = (struct cc__config *)args)) {
}
if (!(evbase = evthr_get_base(thread))) {
evthr_stop(thread);
return;
}
if (!(htp = evhtp_new(evbase, thread))) {
evthr_stop(thread);
return;
}
evhtp_set_cb(htp, "/", process_request_, thread);
evhtp_enable_flag(htp, EVHTP_FLAG_ENABLE_ALL);
/*evhtp_use_threads_wexit(htp, NULL, NULL, CPU__COUNT / 2, NULL); */
core = _threads++ % CPU__COUNT;
printf("me = %d\n", getppid());
CPU_ZERO(&cpu_set);
CPU_SET(core, &cpu_set);
pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpu_set);
if (pthread_getaffinity_np(
pthread_self(),
sizeof(cpu_set_t), &cpu_set) == 0) {
int i;
for (i = 0; i < CPU__COUNT; i++) {
if (CPU_ISSET(i, &cpu_set)) {
printf("CPU %d\n", i);
}
}
}
evhtp_bind_socket(htp, "127.0.0.1", 8089, 1024);
attach_cbpf_(evconnlistener_get_fd(htp->server));
} /* htp_worker_init_ */
int
main(int argc, char ** argv)
{
(void)argc;
(void)argv;
struct event_base * evbase;
struct event * dummy_ev;
evthr_pool_t * workers;
evbase = event_base_new();
dummy_ev = event_new(evbase, -1,
EV_READ | EV_PERSIST,
dummy_eventcb_, NULL);
event_add(dummy_ev, NULL);
if (!(workers =
evthr_pool_wexit_new(CPU__COUNT, htp_worker_init_, NULL, NULL))) {
exit(EXIT_FAILURE);
}
evthr_pool_start(workers);
event_base_loop(evbase, 0);
return 0;
}
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