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-rw-r--r--source4/lib/events/events_liboop.c273
1 files changed, 273 insertions, 0 deletions
diff --git a/source4/lib/events/events_liboop.c b/source4/lib/events/events_liboop.c
new file mode 100644
index 0000000000..ad7c43cd4e
--- /dev/null
+++ b/source4/lib/events/events_liboop.c
@@ -0,0 +1,273 @@
+/*
+ Unix SMB/CIFS implementation.
+ main select loop and event handling
+ wrapper for http://liboop.org/
+
+ Copyright (C) Stefan Metzmacher 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* NOTE: this code compiles fine, but is completly *UNTESTED*
+ and is only commited as example
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "lib/events/events_internal.h"
+
+#include <oop.h>
+
+static int oop_event_context_destructor(void *ptr)
+{
+ struct event_context *ev = talloc_get_type(ptr, struct event_context);
+ 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 event_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 fd_event *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(void *ptr)
+{
+ struct fd_event *fde = talloc_get_type(ptr, struct fd_event);
+ struct event_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);
+
+ return 0;
+}
+
+/*
+ add a fd based event
+ return NULL on failure (memory allocation error)
+*/
+static struct fd_event *oop_event_add_fd(struct event_context *ev, TALLOC_CTX *mem_ctx,
+ int fd, uint16_t flags,
+ event_fd_handler_t handler,
+ void *private_data)
+{
+ struct fd_event *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 fd_event);
+ if (!fde) return NULL;
+
+ fde->event_ctx = ev;
+ fde->fd = fd;
+ fde->flags = flags;
+ fde->handler = handler;
+ fde->private_data = private_data;
+ 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 fd_event *fde)
+{
+ if (!fde) return 0;
+
+ return fde->flags;
+}
+
+/*
+ set the fd event flags
+*/
+static void oop_event_set_fd_flags(struct fd_event *fde, uint16_t flags)
+{
+ oop_source_sys *oop_sys;
+ oop_source *oop;
+
+ if (!fde) return;
+
+ 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 void *oop_event_timed_handler(oop_source *oop, struct timeval t, void *ptr)
+{
+ struct timed_event *te = ptr;
+
+ te->handler(te->event_ctx, te, t, te->private_data);
+
+ return OOP_CONTINUE;
+}
+
+/*
+ destroy a timed event
+*/
+static int oop_event_timed_destructor(void *ptr)
+{
+ struct timed_event *te = talloc_get_type(ptr, struct timed_event);
+ struct event_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 timed_event *oop_event_add_timed(struct event_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 timed_event *te;
+
+ te = talloc(mem_ctx?mem_ctx:ev, struct timed_event);
+ 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->cancel_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 event_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 event_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 events_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_timed = oop_event_add_timed,
+ .loop_once = oop_event_loop_once,
+ .loop_wait = oop_event_loop_wait,
+};
+
+const struct event_ops *events_oop_get_ops(void)
+{
+ return &events_oop_ops;
+}