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If we don't have enough swap available, don't advertise hibernate. Fixes rh#513015

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This commit is contained in:
Richard Hughes 2009-07-21 19:35:28 +01:00
parent 9805175e6e
commit 969c6a928a
1 changed files with 65 additions and 0 deletions
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65
src/dkp-daemon.c
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@ -24,6 +24,7 @@
#endif
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <glib/gi18n-lib.h>
@ -100,6 +101,9 @@ G_DEFINE_TYPE (DkpDaemon, dkp_daemon, G_TYPE_OBJECT)
#define DKP_DAEMON_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DKP_TYPE_DAEMON, DkpDaemonPrivate))
/* if using more memory compared to usable swap, disable hibernate */
#define DKP_DAEMON_SWAP_WATERLINE 80.0f /* % */
/**
* dkp_daemon_set_lid_is_closed:
**/
@ -366,12 +370,64 @@ out:
return ret;
}
/**
* dkp_daemon_check_swap:
**/
static gfloat
dkp_daemon_check_swap (DkpDaemon *daemon)
{
gchar *contents = NULL;
gchar **lines = NULL;
GError *error = NULL;
gchar **tokens;
gboolean ret;
guint active = 0;
guint swap_free = 0;
guint len;
guint i;
gfloat percentage = 0.0f;
const gchar *filename = "/proc/meminfo";
/* get memory data */
ret = g_file_get_contents (filename, &contents, NULL, &error);
if (!ret) {
egg_warning ("failed to open %s: %s", filename, error->message);
g_error_free (error);
goto out;
}
/* process each line */
lines = g_strsplit (contents, "\n", -1);
for (i=1; lines[i] != NULL; i++) {
tokens = g_strsplit_set (lines[i], ": ", -1);
len = g_strv_length (tokens);
if (len > 3) {
if (g_strcmp0 (tokens[0], "SwapFree") == 0)
swap_free = atoi (tokens[len-2]);
else if (g_strcmp0 (tokens[0], "Active") == 0)
active = atoi (tokens[len-2]);
}
g_strfreev (tokens);
}
/* work out how close to the line we are */
if (swap_free > 0 && active > 0)
percentage = (active * 100) / swap_free;
egg_debug ("total swap available %i kb, active memory %i kb (%.1f%%)", swap_free, active, percentage);
out:
g_free (contents);
g_strfreev (lines);
return percentage;
}
/**
* dkp_daemon_init:
**/
static void
dkp_daemon_init (DkpDaemon *daemon)
{
gfloat waterline;
daemon->priv = DKP_DAEMON_GET_PRIVATE (daemon);
daemon->priv->polkit = dkp_polkit_new ();
daemon->priv->lid_is_present = FALSE;
@ -381,6 +437,15 @@ dkp_daemon_init (DkpDaemon *daemon)
/* check if we have support */
dkp_daemon_check_state (daemon);
/* do we have enough swap? */
if (daemon->priv->can_hibernate) {
waterline = dkp_daemon_check_swap (daemon);
if (waterline > DKP_DAEMON_SWAP_WATERLINE) {
egg_debug ("not enough swap to enable hibernate");
daemon->priv->can_hibernate = FALSE;
}
}
}
/**