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author | Geoff Levand <geoffrey.levand@am.sony.com> | 2009-07-09 10:40:44 -0700 |
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committer | Geoff Levand <geoffrey.levand@am.sony.com> | 2009-07-09 10:40:44 -0700 |
commit | 66a74150f8723faf997fc6d4c58bd9bb23c3c2e6 (patch) | |
tree | 6256d2e79d800f2450c2302d23c4b4e09b7c0cad /ui | |
parent | 75967f32b9ae6d4e1e87790fef515ab1ed5d2d16 (diff) | |
download | petitboot-66a74150f8723faf997fc6d4c58bd9bb23c3c2e6.zip petitboot-66a74150f8723faf997fc6d4c58bd9bb23c3c2e6.tar.gz |
Add generic UI countdown timer
Add support for a generic petitboot UI countdown timer.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Diffstat (limited to 'ui')
-rw-r--r-- | ui/common/timer.c | 139 | ||||
-rw-r--r-- | ui/common/timer.h | 42 |
2 files changed, 181 insertions, 0 deletions
diff --git a/ui/common/timer.c b/ui/common/timer.c new file mode 100644 index 0000000..954a18a --- /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); + } +} diff --git a/ui/common/timer.h b/ui/common/timer.h new file mode 100644 index 0000000..781b442 --- /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 |