#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;
static server_t* server_new(void)
{
server_t* server = p_new(server_t, 1);
- server->fd = -1;
+ server->fd = -1;
+ server->fd2 = -1;
return server;
}
+static void server_wipe(server_t *server)
+{
+ server->listener = server->event = false;
+ if (server->fd > 0) {
+ epoll_modify(server->fd, 0, NULL);
+ close(server->fd);
+ server->fd = -1;
+ }
+ if (server->fd2 > 0) {
+ close(server->fd2);
+ server->fd2 = -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 void server_shutdown(void)
+{
+ printf("Server shutdown");
+ array_deep_wipe(listeners, server_delete);
+ array_deep_wipe(server_pool, server_delete);
+}
+
module_exit(server_shutdown);
int start_server(int port, start_listener_t starter, delete_client_t deleter)
}
}
- tmp = server_new();
+ tmp = server_acquire();
tmp->fd = sock;
tmp->listener = true;
+ tmp->event = false;
tmp->data = data;
tmp->clear_data = deleter;
epoll_register(sock, EPOLLIN, tmp);
- listeners[listener_count++] = tmp;
+ array_add(listeners, tmp);
return 0;
}
}
}
- tmp = server_new();
+ tmp = server_acquire();
+ tmp->listener = false;
+ tmp->event = false;
tmp->fd = sock;
tmp->data = data;
tmp->clear_data = deleter;
return 0;
}
+server_t * event_register(int fd, void *data)
+{
+ int fds[2];
+ if (fd == -1) {
+ if (pipe(fds) != 0) {
+ UNIXERR("pipe");
+ return NULL;
+ }
+ if (setnonblock(fds[0]) != 0) {
+ close(fds[0]);
+ close(fds[1]);
+ return NULL;
+ }
+ }
+
+ server_t *tmp = server_acquire();
+ tmp->listener = false;
+ tmp->event = true;
+ tmp->fd = fd == -1 ? fds[0] : fd;
+ tmp->fd2 = fd == -1 ? fds[1] : -1;
+ tmp->data = data;
+ epoll_register(fds[0], EPOLLIN, tmp);
+ return tmp;
+}
+
+bool event_fire(server_t *event)
+{
+ static const char *data = "";
+ if (event->fd2 == -1) {
+ return false;
+ }
+ return write(event->fd2, data, 1) == 0;
+}
+
+bool event_cancel(server_t *event)
+{
+ char buff[32];
+ while (true) {
+ ssize_t res = read(event->fd, buff, 32);
+ if (res == -1 && errno != EAGAIN && errno != EINTR) {
+ UNIXERR("read");
+ return false;
+ } else if (res == -1 && errno == EINTR) {
+ continue;
+ } else if (res != 32) {
+ return true;
+ }
+ }
+}
+
+void event_release(server_t *event)
+{
+ epoll_unregister(event->fd);
+ server_release(event);
+}
+
int server_loop(start_client_t starter, delete_client_t deleter,
- run_client_t runner, refresh_t refresh, void* config) {
+ run_client_t runner, event_handler_t handler,
+ refresh_t refresh, void* config)
+{
info("entering processing loop");
while (!sigint) {
struct epoll_event evts[1024];
if (d->listener) {
(void)start_client(d, starter, deleter);
continue;
+ } else if (d->event) {
+ if (handler) {
+ if (!handler(d, config)) {
+ event_release(d);
+ }
+ } else {
+ event_release(d);
+ }
+ continue;
}
if (evts[n].events & EPOLLIN) {
if (runner(d, config) < 0) {
- server_delete(&d);
+ server_release(d);
continue;
}
}
if ((evts[n].events & EPOLLOUT) && d->obuf.len) {
if (buffer_write(&d->obuf, d->fd) < 0) {
- server_delete(&d);
+ server_release(d);
continue;
}
if (!d->obuf.len) {