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authorVolker Lendecke <vl@samba.org>2012-07-18 11:25:42 +0200
committerJeremy Allison <jra@samba.org>2012-07-18 15:54:20 -0700
commit3da86cc23f20e5b852d08aa05dacabb2d6e496e2 (patch)
treeecf2a9bc116cd623292bf7177aab55d182743a43 /source3/lib
parentf79fb4429c7fb9c2ae81f06fc8f2162a1ccd226c (diff)
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s3: Add tevent_wait_send/recv
To me it seems that we might have this functionality already somewere... I just can't find it. Metze, do you have an idea? Signed-off-by: Jeremy Allison <jra@samba.org>
Diffstat (limited to 'source3/lib')
-rw-r--r--source3/lib/tevent_wait.c83
-rw-r--r--source3/lib/tevent_wait.h37
2 files changed, 120 insertions, 0 deletions
diff --git a/source3/lib/tevent_wait.c b/source3/lib/tevent_wait.c
new file mode 100644
index 0000000000..ec7c8cbf50
--- /dev/null
+++ b/source3/lib/tevent_wait.c
@@ -0,0 +1,83 @@
+/*
+ Unix SMB/CIFS implementation.
+ Implement a send/recv interface to wait for an external trigger
+ Copyright (C) Volker Lendecke 2012
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "lib/replace/replace.h"
+#include "talloc.h"
+#include "tevent.h"
+#include "tevent_wait.h"
+#include "lib/util/tevent_unix.h"
+
+struct tevent_wait_state {
+ struct tevent_immediate *im;
+ struct tevent_context *ev;
+};
+
+struct tevent_req *tevent_wait_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev)
+{
+ struct tevent_req *req;
+ struct tevent_wait_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct tevent_wait_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->ev = ev;
+ state->im = tevent_create_immediate(state);
+ if (tevent_req_nomem(state->im, req)) {
+ return tevent_req_post(req, ev);
+ }
+ return req;
+}
+
+static void tevent_wait_trigger(struct tevent_context *ctx,
+ struct tevent_immediate *im,
+ void *private_data);
+
+void tevent_wait_done(struct tevent_req *req)
+{
+ struct tevent_wait_state *state;
+
+ if (req == NULL) {
+ return;
+ }
+ state = tevent_req_data(req, struct tevent_wait_state);
+
+ tevent_schedule_immediate(state->im, state->ev,
+ tevent_wait_trigger, req);
+}
+
+static void tevent_wait_trigger(struct tevent_context *ctx,
+ struct tevent_immediate *im,
+ void *private_data)
+{
+ struct tevent_req *req = talloc_get_type_abort(
+ private_data, struct tevent_req);
+ tevent_req_done(req);
+}
+
+int tevent_wait_recv(struct tevent_req *req)
+{
+ int err;
+
+ if (tevent_req_is_unix_error(req, &err)) {
+ return err;
+ }
+ return 0;
+}
diff --git a/source3/lib/tevent_wait.h b/source3/lib/tevent_wait.h
new file mode 100644
index 0000000000..97b749191d
--- /dev/null
+++ b/source3/lib/tevent_wait.h
@@ -0,0 +1,37 @@
+/*
+ Unix SMB/CIFS implementation.
+ Implement a send/recv interface to wait for an external trigger
+ Copyright (C) Volker Lendecke 2012
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _TEVENT_WAIT_H
+#define _TEVENT_WAIT_H
+
+#include "talloc.h"
+#include "tevent.h"
+
+/*
+ * Just wait for getting a tevent_wait_done. tevent_wait_done can deal with a
+ * NULL request.
+ */
+
+struct tevent_req *tevent_wait_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev);
+int tevent_wait_recv(struct tevent_req *req);
+
+void tevent_wait_done(struct tevent_req *req);
+
+#endif /* _TEVENT_WAIT_H */