Patchwork [11/31] petitboot: Add generic UI countdown timer

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Submitter Geoff Levand
Date July 8, 2009, 12:11 a.m.
Message ID <20090708001135.684341753@am.sony.com>
Download mbox | patch
Permalink /patch/29554/
State New
Headers show

Comments

Geoff Levand - July 8, 2009, 12:11 a.m.
Add support for a generic petitboot UI countdown timer.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
---

 rules.mk          |    2 
 ui/common/timer.c |  139 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ui/common/timer.h |   42 ++++++++++++++++
 3 files changed, 182 insertions(+), 1 deletion(-)

Patch

--- a/rules.mk
+++ b/rules.mk
@@ -49,7 +49,7 @@  discover_objs = discover/event.o discove
 
 # client objs
 ui_common_objs = ui/common/discover-client.o ui/common/loader.o \
-	ui/common/ui-system.o ui/common/url.o
+	ui/common/ui-system.o ui/common/timer.o ui/common/url.o
 ncurses_objs = ui/ncurses/nc-scr.o ui/ncurses/nc-menu.o \
 	 ui/ncurses/nc-ked.o ui/ncurses/nc-cui.o
 twin_objs = ui/twin/pb-twin.o
--- /dev/null
+++ b/ui/common/timer.c
@@ -0,0 +1,139 @@ 
+/*
+ *  Copyright (C) 2009 Sony Computer Entertainment Inc.
+ *  Copyright 2009 Sony Corp.
+ *
+ *  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; version 2 of the License.
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#define _GNU_SOURCE
+#include <assert.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include "log/log.h"
+#include "timer.h"
+
+/**
+ * ui_timer_init - Initialize the timer for use.
+ * @seconds: The final timeout value in seconds.
+ */
+
+void ui_timer_init(struct ui_timer *timer, unsigned int seconds)
+{
+	pb_log("%s: %u\n", __func__, seconds);
+	assert(!timer->disabled);
+	timer->timeout = seconds;
+}
+
+/**
+ * ui_timer_next - Calculate the next timer interval.
+ */
+
+static unsigned int ui_timer_next(unsigned int seconds)
+{
+	unsigned int next;
+
+	if (seconds == 0) {
+		next = 0;
+		goto done;
+	}
+
+	if (seconds <= 10) {
+		next = 1;
+		goto done;
+	}
+
+	if (seconds <= 60) {
+		next = seconds % 5;
+		next = next ? next : 5;
+		goto done;
+	}
+
+	next = seconds % 10;
+	next = next ? next : 10;
+
+done:
+	pb_log("%s: %u = %u\n", __func__, seconds, next);
+	return next;
+}
+
+/**
+ * ui_timer_kick - Kickstart the next timer interval.
+ */
+
+void ui_timer_kick(struct ui_timer *timer)
+{
+	unsigned int next;
+
+	if(timer->disabled)
+		return;
+
+	if (timer->update_display)
+		timer->update_display(timer, timer->timeout);
+
+	next = ui_timer_next(timer->timeout);
+	timer->timeout -= next;
+
+	if (next) {
+		alarm(next);
+		return;
+	}
+
+	pb_log("%s: timed out\n", __func__);
+
+	ui_timer_disable(timer);
+	timer->handle_timeout(timer);
+}
+
+/**
+ * ui_timer_disable - Stop and disable the timer.
+ */
+
+void ui_timer_disable(struct ui_timer *timer)
+{
+	if (timer->disabled)
+		return;
+
+	pb_log("%s\n", __func__);
+	timer->disabled = 1;
+	timer->timeout = UINT_MAX;
+	alarm(0);
+}
+
+/**
+ * ui_timer_sigalrm
+ *
+ * Called at SIGALRM.
+ */
+
+void ui_timer_sigalrm(struct ui_timer *timer)
+{
+	timer->signaled = 1;
+}
+
+/**
+ * ui_timer_process_sig - Process a timer signal
+ */
+
+void ui_timer_process_sig(struct ui_timer *timer)
+{
+	while (timer->signaled) {
+		timer->signaled = 0;
+		ui_timer_kick(timer);
+	}
+}
--- /dev/null
+++ b/ui/common/timer.h
@@ -0,0 +1,42 @@ 
+/*
+ *  Copyright (C) 2009 Sony Computer Entertainment Inc.
+ *  Copyright 2009 Sony Corp.
+ *
+ *  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; version 2 of the License.
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#if !defined(_PB_UI_TIMER_H)
+#define _PB_UI_TIMER_H
+
+#include <signal.h>
+
+/**
+ * struct ui_timer - UI timeout.
+ */
+
+struct ui_timer {
+	unsigned int timeout;
+	unsigned int disabled;
+	sig_atomic_t signaled;
+	void (*update_display)(struct ui_timer *timer, unsigned int timeout);
+	void (*handle_timeout)(struct ui_timer *timer);
+};
+
+void ui_timer_init(struct ui_timer *timer, unsigned int seconds);
+void ui_timer_kick(struct ui_timer *timer);
+void ui_timer_disable(struct ui_timer *timer);
+void ui_timer_sigalrm(struct ui_timer *timer);
+void ui_timer_process_sig(struct ui_timer *timer);
+
+#endif