#include "server.h"
#include "epoll.h"
+#include "common.h"
-static server_t *listeners[1024];
-static int listener_count = 0;
+static PA(server_t) listeners = ARRAY_INIT;
+static PA(server_t) server_pool = ARRAY_INIT;
+struct ev_loop *global_loop = NULL;
+static start_client_t client_start = NULL;
+static delete_client_t client_delete = NULL;
+static run_client_t client_run = NULL;
+static refresh_t config_refresh = NULL;
+static void *config_ptr = NULL;
static server_t* server_new(void)
{
server_t* server = p_new(server_t, 1);
- server->fd = -1;
+ server->fd = -1;
return server;
}
+static void server_wipe(server_t *server)
+{
+ if (server->fd >= 0) {
+ ev_io_stop(global_loop, &server->io);
+ close(server->fd);
+ server->fd = -1;
+ }
+ if (server->data && server->clear_data) {
+ server->clear_data(&server->data);
+ }
+}
+
static void server_delete(server_t **server)
{
if (*server) {
- if ((*server)->fd >= 0) {
- close((*server)->fd);
- }
- if ((*server)->data && (*server)->clear_data) {
- (*server)->clear_data(&(*server)->data);
- }
buffer_wipe(&(*server)->ibuf);
buffer_wipe(&(*server)->obuf);
+ server_wipe(*server);
p_delete(server);
}
}
-static void server_shutdown(void)
+static server_t* server_acquire(void)
{
- for (int i = 0 ; i < listener_count ; ++i) {
- server_delete(&listeners[i]);
+ if (server_pool.len != 0) {
+ return array_elt(server_pool, --server_pool.len);
+ } else {
+ return server_new();
}
}
+void server_release(server_t *server)
+{
+ server_wipe(server);
+ array_add(server_pool, server);
+}
+
+static int server_init(void)
+{
+ global_loop = ev_default_loop(0);
+ return 0;
+}
+
+static void server_shutdown(void)
+{
+ array_deep_wipe(listeners, server_delete);
+ array_deep_wipe(server_pool, server_delete);
+}
+module_init(server_init);
module_exit(server_shutdown);
+static void client_cb(EV_P_ struct ev_io *w, int events)
+{
+ server_t *server = (server_t*)w;
+
+ debug("Entering client_cb for %p, %d (%d | %d)", w, events, EV_WRITE, EV_READ);
+
+ if (events & EV_WRITE && server->obuf.len) {
+ if (buffer_write(&server->obuf, server->fd) < 0) {
+ server_release(server);
+ return;
+ }
+ if (!server->obuf.len) {
+ ev_io_set(&server->io, server->fd, EV_READ);
+ }
+ }
+
+ if (events & EV_READ) {
+ if (server->run(server, config_ptr) < 0) {
+ server_release(server);
+ return;
+ }
+ }
+}
+
+static int start_client(server_t *server, start_client_t starter,
+ run_client_t runner, delete_client_t deleter)
+{
+ server_t *tmp;
+ void* data = NULL;
+ int sock;
+
+ sock = accept_nonblock(server->fd);
+ if (sock < 0) {
+ UNIXERR("accept");
+ return -1;
+ }
+
+ if (starter) {
+ data = starter(server);
+ if (data == NULL) {
+ close(sock);
+ return -1;
+ }
+ }
+
+ tmp = server_acquire();
+ tmp->fd = sock;
+ tmp->data = data;
+ tmp->run = runner;
+ tmp->clear_data = deleter;
+ ev_io_init(&tmp->io, client_cb, tmp->fd, EV_READ);
+ ev_io_start(global_loop, &tmp->io);
+ return 0;
+}
+
+static void server_cb(EV_P_ struct ev_io *w, int events)
+{
+ server_t *server = (server_t*)w;
+ if (start_client(server, client_start, client_run, client_delete) != 0) {
+ ev_unloop(EV_A_ EVUNLOOP_ALL);
+ }
+}
+
int start_server(int port, start_listener_t starter, delete_client_t deleter)
{
struct sockaddr_in addr = {
}
}
- tmp = server_new();
+ tmp = server_acquire();
tmp->fd = sock;
- tmp->listener = true;
tmp->data = data;
+ tmp->run = NULL;
tmp->clear_data = deleter;
- epoll_register(sock, EPOLLIN, tmp);
- listeners[listener_count++] = tmp;
+ ev_io_init(&tmp->io, server_cb, tmp->fd, EV_READ);
+ ev_io_start(global_loop, &tmp->io);
+ array_add(listeners, tmp);
return 0;
}
-static int start_client(server_t *server, start_client_t starter,
- delete_client_t deleter)
+server_t *server_register(int fd, run_client_t runner, void *data)
{
- server_t *tmp;
- void* data = NULL;
- int sock;
-
- sock = accept_nonblock(server->fd);
- if (sock < 0) {
- UNIXERR("accept");
- return -1;
+ if (fd < 0) {
+ return NULL;
}
- if (starter) {
- data = starter(server);
- if (data == NULL) {
- close(sock);
- return -1;
- }
+ server_t *tmp = server_acquire();
+ tmp->fd = fd;
+ tmp->data = data;
+ tmp->run = runner;
+ tmp->clear_data = NULL;
+ ev_io_init(&tmp->io, client_cb, tmp->fd, EV_READ);
+ ev_io_start(global_loop, &tmp->io);
+ return tmp;
+}
+
+static void refresh_cb(EV_P_ struct ev_signal *w, int event)
+{
+ if (!config_refresh(config_ptr)) {
+ ev_unloop(EV_A_ EVUNLOOP_ALL);
}
+}
- tmp = server_new();
- tmp->fd = sock;
- tmp->data = data;
- tmp->clear_data = deleter;
- epoll_register(sock, EPOLLIN, tmp);
- return 0;
+static void exit_cb(EV_P_ struct ev_signal *w, int event)
+{
+ ev_unloop(EV_A_ EVUNLOOP_ALL);
}
int server_loop(start_client_t starter, delete_client_t deleter,
- run_client_t runner, refresh_t refresh, void* config) {
- while (!sigint) {
- struct epoll_event evts[1024];
- int n;
-
- if (sighup && refresh) {
- if (!refresh(config)) {
- syslog(LOG_ERR, "error while refreshing configuration");
- return EXIT_FAILURE;
- }
- }
+ run_client_t runner, refresh_t refresh, void* config)
+{
+ struct ev_signal ev_sighup;
+ struct ev_signal ev_sigint;
+ struct ev_signal ev_sigterm;
- n = epoll_select(evts, countof(evts), -1);
- if (n < 0) {
- if (errno != EAGAIN && errno != EINTR) {
- UNIXERR("epoll_wait");
- return EXIT_FAILURE;
- }
- continue;
- }
+ client_start = starter;
+ client_delete = deleter;
+ client_run = runner;
+ config_refresh = refresh;
+ config_ptr = config;
- while (--n >= 0) {
- server_t *d = evts[n].data.ptr;
-
- if (d->listener) {
- (void)start_client(d, starter, deleter);
- continue;
- }
-
- if (evts[n].events & EPOLLIN) {
- if (runner(d, config) < 0) {
- server_delete(&d);
- continue;
- }
- }
-
- if ((evts[n].events & EPOLLOUT) && d->obuf.len) {
- if (buffer_write(&d->obuf, d->fd) < 0) {
- server_delete(&d);
- continue;
- }
- if (!d->obuf.len) {
- epoll_modify(d->fd, EPOLLIN, d);
- }
- }
- }
+ if (refresh != NULL) {
+ ev_signal_init(&ev_sighup, refresh_cb, SIGHUP);
+ ev_signal_start(global_loop, &ev_sighup);
}
+ ev_signal_init(&ev_sigint, exit_cb, SIGINT);
+ ev_signal_start(global_loop, &ev_sigint);
+ ev_signal_init(&ev_sigterm, exit_cb, SIGTERM);
+ ev_signal_start(global_loop, &ev_sigterm);
+
+ info("entering processing loop");
+ ev_loop(global_loop, 0);
+ info("exit requested");
return EXIT_SUCCESS;
}
projects / apps / pfixtools.git / blobdiff