From c609cb9898dc8dec5dcb0b1d111b3f6b6a5e09d4 Mon Sep 17 00:00:00 2001

From: Tom Gundersen <teg@jklm.no>

Date: Wed, 27 Aug 2014 19:04:29 +0200

Subject: [PATCH] man: add sample glib/sd-event integration

This should be moved to man pages, but for now the C code is included directly.

Suggested by Zbyszek.

---

 man/glib-event-glue.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++

 1 file changed, 74 insertions(+)

 create mode 100644 man/glib-event-glue.c

diff --git a/man/glib-event-glue.c b/man/glib-event-glue.c

new file mode 100644

index 0000000000..95aaea1e63

--- /dev/null

+++ b/man/glib-event-glue.c

@@ -0,0 +1,74 @@

+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

+

+/***

+  Copyright 2014 Tom Gundersen

+

+  Permission is hereby granted, free of charge, to any person

+  obtaining a copy of this software and associated documentation files

+  (the "Software"), to deal in the Software without restriction,

+  including without limitation the rights to use, copy, modify, merge,

+  publish, distribute, sublicense, and/or sell copies of the Software,

+  and to permit persons to whom the Software is furnished to do so,

+  subject to the following conditions:

+

+  The above copyright notice and this permission notice shall be

+  included in all copies or substantial portions of the Software.

+

+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

+  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

+  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

+  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

+  SOFTWARE.

+***/

+

+#include <assert.h>

+#include <errno.h>

+#include <stdlib.h>

+

+#include "glib-event-glue.h"

+

+typedef struct SDEventSource {

+        GSource source;

+        GPollFD pollfd;

+        sd_event *event;

+} SDEventSource;

+

+static gboolean event_prepare(GSource *source, gint *timeout_) {

+        return sd_event_prepare(((SDEventSource *)source)->event) > 0;

+}

+

+static gboolean event_check(GSource *source) {

+        return sd_event_wait(((SDEventSource *)source)->event, 0) > 0;

+}

+

+static gboolean event_dispatch(GSource *source, GSourceFunc callback, gpointer user_data) {

+        return sd_event_dispatch(((SDEventSource *)source)->event) > 0;

+}

+

+static void event_finalize(GSource *source) {

+        sd_event_unref(((SDEventSource *)source)->event);

+}

+

+static GSourceFuncs event_funcs = {

+        .prepare = event_prepare,

+        .check = event_check,

+        .dispatch = event_dispatch,

+        .finalize = event_finalize,

+};

+

+GSource *g_sd_event_create_source(sd_event *event) {

+        SDEventSource *source;

+

+        source = (SDEventSource *)g_source_new(&event_funcs, sizeof(SDEventSource));

+

+        source->event = sd_event_ref(event);

+        source->pollfd.fd = sd_event_get_fd(event);

+        source->pollfd.events = G_IO_IN | G_IO_HUP | G_IO_ERR;

+

+        g_source_add_poll((GSource *)source, &source->pollfd);

+

+        return (GSource *)source;

+}