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Interpolate stored boot time with default time

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This is so we get a smooth progress bar after
/var/lib/plymouth/boot-duration is read.
This commit is contained in:
Ray Strode 2008-09-25 17:45:30 -04:00
parent 6d31502f03
commit bbd9b2f58a
1 changed files with 15 additions and 2 deletions
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17
src/ply-boot-splash.c
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@ -18,6 +18,7 @@
* 02111-1307, USA.
*
* Written by: Ray Strode <rstrode@redhat.com>
* Soeren Sandmann <sandmann@redhat.com>
*/
#include "config.h"
#include "ply-boot-splash.h"
@ -205,14 +206,26 @@ static void
ply_boot_splash_update_progress (ply_boot_splash_t *splash)
{
double time_in_seconds;
double default_percentage;
double percentage;
assert (splash != NULL);
time_in_seconds = ply_get_timestamp () - splash->start_time;
percentage = CLAMP (time_in_seconds / splash->boot_duration,
0.0, 1.0);
default_percentage = time_in_seconds / DEFAULT_BOOT_DURATION;
percentage = time_in_seconds / splash->boot_duration;
/* We intepolate the percentage between the real percentage (based
* on what's stored on disk) with the default percentage (based on
* a 60 second boot time)
*
* This is because we initially assume 60 seconds until / is mounted,
* and we don't want any large jumps
*/
percentage = percentage * percentage + default_percentage * (1.0 - percentage);
percentage = CLAMP (percentage, 0.0, 1.0);
if (splash->plugin_interface->on_boot_progress != NULL)
splash->plugin_interface->on_boot_progress (splash->plugin,