+++ /dev/null
-/*
- Unix SMB/CIFS implementation.
- main select loop and event handling
- wrapper for http://git.lysator.liu.se/liboop/
-
- Copyright (C) Stefan Metzmacher 2005
-
- ** NOTE! The following LGPL license applies to the tevent
- ** library. This does NOT imply that all of Samba is released
- ** under the LGPL
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 3 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "events.h"
-#include "events_internal.h"
-
-#include <oop.h>
-
-/*
- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
- NOTE: this code compiles fine, but is completely *UNTESTED*
- and is only committed as an example
-
- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-*/
-
-static int oop_event_context_destructor(struct tevent_context *ev)
-{
- oop_source_sys *oop_sys = ev->additional_data;
-
- oop_sys_delete(oop_sys);
-
- return 0;
-}
-
-/*
- create a oop_event_context structure.
-*/
-static int oop_event_context_init(struct tevent_context *ev, void *private_data)
-{
- oop_source_sys *oop_sys = private_data;
-
- if (!oop_sys) {
- oop_sys = oop_sys_new();
- if (!oop_sys) {
- return -1;
- }
-
- talloc_set_destructor(ev, oop_event_context_destructor);
- }
-
- ev->additional_data = oop_sys;
-
- return 0;
-}
-
-static void *oop_event_fd_handler(oop_source *oop, int fd, oop_event oop_type, void *ptr)
-{
- struct tevent_fd *fde = ptr;
-
- if (fd != fde->fd) return OOP_ERROR;
-
- switch(oop_type) {
- case OOP_READ:
- fde->handler(fde->event_ctx, fde, EVENT_FD_READ, fde->private_data);
- return OOP_CONTINUE;
- case OOP_WRITE:
- fde->handler(fde->event_ctx, fde, EVENT_FD_WRITE, fde->private_data);
- return OOP_CONTINUE;
- case OOP_EXCEPTION:
- return OOP_ERROR;
- case OOP_NUM_EVENTS:
- return OOP_ERROR;
- }
-
- return OOP_ERROR;
-}
-
-/*
- destroy an fd_event
-*/
-static int oop_event_fd_destructor(struct tevent_fd *fde)
-{
- struct tevent_context *ev = fde->event_ctx;
- oop_source_sys *oop_sys = ev->additional_data;
- oop_source *oop = oop_sys_source(oop_sys);
-
- if (fde->flags & EVENT_FD_READ)
- oop->cancel_fd(oop, fde->fd, OOP_READ);
- if (fde->flags & EVENT_FD_WRITE)
- oop->cancel_fd(oop, fde->fd, OOP_WRITE);
-
- if (fde->flags & EVENT_FD_AUTOCLOSE) {
- close(fde->fd);
- fde->fd = -1;
- }
-
- return 0;
-}
-
-/*
- add a fd based event
- return NULL on failure (memory allocation error)
-*/
-static struct tevent_fd *oop_event_add_fd(struct tevent_context *ev, TALLOC_CTX *mem_ctx,
- int fd, uint16_t flags,
- event_fd_handler_t handler,
- void *private_data)
-{
- struct tevent_fd *fde;
- oop_source_sys *oop_sys = ev->additional_data;
- oop_source *oop = oop_sys_source(oop_sys);
-
- fde = talloc(mem_ctx?mem_ctx:ev, struct tevent_fd);
- if (!fde) return NULL;
-
- fde->event_ctx = ev;
- fde->fd = fd;
- fde->flags = flags;
- fde->handler = handler;
- fde->private_data = private_data;
- fde->additional_flags = 0;
- fde->additional_data = NULL;
-
- if (fde->flags & EVENT_FD_READ)
- oop->on_fd(oop, fde->fd, OOP_READ, oop_event_fd_handler, fde);
- if (fde->flags & EVENT_FD_WRITE)
- oop->on_fd(oop, fde->fd, OOP_WRITE, oop_event_fd_handler, fde);
-
- talloc_set_destructor(fde, oop_event_fd_destructor);
-
- return fde;
-}
-
-/*
- return the fd event flags
-*/
-static uint16_t oop_event_get_fd_flags(struct tevent_fd *fde)
-{
- return fde->flags;
-}
-
-/*
- set the fd event flags
-*/
-static void oop_event_set_fd_flags(struct tevent_fd *fde, uint16_t flags)
-{
- oop_source_sys *oop_sys;
- oop_source *oop;
-
- oop_sys = fde->event_ctx->additional_data;
- oop = oop_sys_source(oop_sys);
-
- if ((fde->flags & EVENT_FD_READ)&&(!(flags & EVENT_FD_READ)))
- oop->cancel_fd(oop, fde->fd, OOP_READ);
-
- if ((!(fde->flags & EVENT_FD_READ))&&(flags & EVENT_FD_READ))
- oop->on_fd(oop, fde->fd, OOP_READ, oop_event_fd_handler, fde);
-
- if ((fde->flags & EVENT_FD_WRITE)&&(!(flags & EVENT_FD_WRITE)))
- oop->cancel_fd(oop, fde->fd, OOP_WRITE);
-
- if ((!(fde->flags & EVENT_FD_WRITE))&&(flags & EVENT_FD_WRITE))
- oop->on_fd(oop, fde->fd, OOP_WRITE, oop_event_fd_handler, fde);
-
- fde->flags = flags;
-}
-
-static int oop_event_timed_destructor(struct tevent_timer *te);
-
-static int oop_event_timed_deny_destructor(struct tevent_timer *te)
-{
- return -1;
-}
-
-static void *oop_event_timed_handler(oop_source *oop, struct timeval t, void *ptr)
-{
- struct tevent_timer *te = ptr;
-
- /* deny the handler to free the event */
- talloc_set_destructor(te, oop_event_timed_deny_destructor);
- te->handler(te->event_ctx, te, t, te->private_data);
-
- talloc_set_destructor(te, oop_event_timed_destructor);
- talloc_free(te);
-
- return OOP_CONTINUE;
-}
-
-/*
- destroy a timed event
-*/
-static int oop_event_timed_destructor(struct tevent_timer *te)
-{
- struct tevent_context *ev = te->event_ctx;
- oop_source_sys *oop_sys = ev->additional_data;
- oop_source *oop = oop_sys_source(oop_sys);
-
- oop->cancel_time(oop, te->next_event, oop_event_timed_handler, te);
-
- return 0;
-}
-
-/*
- add a timed event
- return NULL on failure (memory allocation error)
-*/
-static struct tevent_timer *oop_event_add_timed(struct tevent_context *ev, TALLOC_CTX *mem_ctx,
- struct timeval next_event,
- event_timed_handler_t handler,
- void *private_data)
-{
- oop_source_sys *oop_sys = ev->additional_data;
- oop_source *oop = oop_sys_source(oop_sys);
- struct tevent_timer *te;
-
- te = talloc(mem_ctx?mem_ctx:ev, struct tevent_timer);
- if (te == NULL) return NULL;
-
- te->event_ctx = ev;
- te->next_event = next_event;
- te->handler = handler;
- te->private_data = private_data;
- te->additional_data = NULL;
-
- oop->on_time(oop, te->next_event, oop_event_timed_handler, te);
-
- talloc_set_destructor(te, oop_event_timed_destructor);
-
- return te;
-}
-
-/*
- do a single event loop using the events defined in ev
-*/
-static int oop_event_loop_once(struct tevent_context *ev)
-{
- void *oop_ret;
- oop_source_sys *oop_sys = ev->additional_data;
-
- oop_ret = oop_sys_run_once(oop_sys);
- if (oop_ret == OOP_CONTINUE) {
- return 0;
- }
-
- return -1;
-}
-
-/*
- return on failure or (with 0) if all fd events are removed
-*/
-static int oop_event_loop_wait(struct tevent_context *ev)
-{
- void *oop_ret;
- oop_source_sys *oop_sys = ev->additional_data;
-
- oop_ret = oop_sys_run(oop_sys);
- if (oop_ret == OOP_CONTINUE) {
- return 0;
- }
-
- return -1;
-}
-
-static const struct event_ops event_oop_ops = {
- .context_init = oop_event_context_init,
- .add_fd = oop_event_add_fd,
- .get_fd_flags = oop_event_get_fd_flags,
- .set_fd_flags = oop_event_set_fd_flags,
- .add_timer = oop_event_add_timed,
- .add_signal = common_event_add_signal,
- .loop_once = oop_event_loop_once,
- .loop_wait = oop_event_loop_wait,
-};
-
-const struct event_ops *event_liboop_get_ops(void)
-{
- return &event_oop_ops;
-}