//初始化fdevents结构体，并返回给用户
fdevents *fdevent_init(size_t maxfds, fdevent_handler_t type) {
fdevents *ev;
ev = calloc(1, sizeof(*ev));
ev->fdarray = calloc(maxfds, sizeof(*ev->fdarray));
ev->maxfds = maxfds;
// fdevent_xxxx_init对相应的i/o模型的函数指针赋值
switch(type) {
case FDEVENT_HANDLER_POLL:
if (0 != fdevent_poll_init(ev)) {
fprintf(stderr, "%s.%d: event-handler poll failed\n",
__FILE__, __LINE__);
return NULL;
}
break;
case FDEVENT_HANDLER_SELECT:
if (0 != fdevent_select_init(ev)) {
fprintf(stderr, "%s.%d: event-handler select failed\n",
__FILE__, __LINE__);
return NULL;
}
break;
case FDEVENT_HANDLER_LINUX_RTSIG:
if (0 != fdevent_linux_rtsig_init(ev)) {
fprintf(stderr, "%s.%d: event-handler linux-rtsig failed, try to set server.event-handler = \"poll\" or \"select\"\n",
__FILE__, __LINE__);
return NULL;
}
break;
case FDEVENT_HANDLER_LINUX_SYSEPOLL:
if (0 != fdevent_linux_sysepoll_init(ev)) {
fprintf(stderr, "%s.%d: event-handler linux-sysepoll failed, try to set server.event-handler = \"poll\" or \"select\"\n",
__FILE__, __LINE__);
return NULL;
}
break;
case FDEVENT_HANDLER_SOLARIS_DEVPOLL:
if (0 != fdevent_solaris_devpoll_init(ev)) {
fprintf(stderr, "%s.%d: event-handler solaris-devpoll failed, try to set server.event-handler = \"poll\" or \"select\"\n",
__FILE__, __LINE__);
return NULL;
}
break;
case FDEVENT_HANDLER_FREEBSD_KQUEUE:
if (0 != fdevent_freebsd_kqueue_init(ev)) {
fprintf(stderr, "%s.%d: event-handler freebsd-kqueue failed, try to set server.event-handler = \"poll\" or \"select\"\n",
__FILE__, __LINE__);
return NULL;
}
break;
default:
fprintf(stderr, "%s.%d: event-handler is unknown, try to set server.event-handler = \"poll\" or \"select\"\n",
__FILE__, __LINE__);
return NULL;
}
return ev;
}
fdevents *fdevent_init(server *srv, size_t maxfds, fdevent_handler_t type) {
fdevents *ev;
ev = calloc(1, sizeof(*ev));
ev->srv = srv;
ev->fdarray = calloc(maxfds, sizeof(*ev->fdarray));
ev->maxfds = maxfds;
switch(type) {
case FDEVENT_HANDLER_POLL:
if (0 != fdevent_poll_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler poll failed");
return NULL;
}
return ev;
case FDEVENT_HANDLER_SELECT:
if (0 != fdevent_select_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler select failed");
return NULL;
}
return ev;
case FDEVENT_HANDLER_LINUX_SYSEPOLL:
if (0 != fdevent_linux_sysepoll_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler linux-sysepoll failed, try to set server.event-handler = \"poll\" or \"select\"");
return NULL;
}
return ev;
case FDEVENT_HANDLER_SOLARIS_DEVPOLL:
if (0 != fdevent_solaris_devpoll_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler solaris-devpoll failed, try to set server.event-handler = \"poll\" or \"select\"");
return NULL;
}
return ev;
case FDEVENT_HANDLER_SOLARIS_PORT:
if (0 != fdevent_solaris_port_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler solaris-eventports failed, try to set server.event-handler = \"poll\" or \"select\"");
return NULL;
}
return ev;
case FDEVENT_HANDLER_FREEBSD_KQUEUE:
if (0 != fdevent_freebsd_kqueue_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler freebsd-kqueue failed, try to set server.event-handler = \"poll\" or \"select\"");
return NULL;
}
return ev;
case FDEVENT_HANDLER_LIBEV:
if (0 != fdevent_libev_init(ev)) {
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler libev failed, try to set server.event-handler = \"poll\" or \"select\"");
return NULL;
}
return ev;
case FDEVENT_HANDLER_UNSET:
break;
}
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"event-handler is unknown, try to set server.event-handler = \"poll\" or \"select\"");
return NULL;
}