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Get the swap size from the backend, rather than hardcoding Linux specifics

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This commit is contained in:
Richard Hughes 2010-03-29 14:21:51 +01:00
parent 0198498350
commit 4b5dc883e6
4 changed files with 65 additions and 61 deletions
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1
src/freebsd/up-backend.c
View file

@ -351,6 +351,7 @@ up_backend_has_encrypted_swap (UpBackend *backend)
return FALSE;
}
/* Return value: a percentage value */
gfloat
up_backend_get_used_swap (UpBackend *backend)
{

62
src/linux/up-backend.c
View file

@ -459,6 +459,68 @@ out:
return encrypted_swap;
}
/**
* up_backend_get_used_swap:
*
* Return value: a percentage value
**/
gfloat
up_backend_get_used_swap (UpBackend *backend)
{
gchar *contents = NULL;
gchar **lines = NULL;
GError *error = NULL;
gchar **tokens;
gboolean ret;
guint active = 0;
guint swap_free = 0;
guint swap_total = 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]);
if (g_strcmp0 (tokens[0], "SwapTotal") == 0)
swap_total = atoi (tokens[len-2]);
else if (g_strcmp0 (tokens[0], "Active") == 0)
active = atoi (tokens[len-2]);
}
g_strfreev (tokens);
}
/* first check if we even have swap, if not consider all swap space used */
if (swap_total == 0) {
egg_debug ("no swap space found");
percentage = 100.0f;
goto out;
}
/* 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;
}
/**
* up_backend_class_init:
* @klass: The UpBackendClass

1
src/up-backend.h
View file

@ -70,6 +70,7 @@ gboolean up_backend_coldplug (UpBackend *backend,
gboolean up_backend_kernel_can_suspend (UpBackend *backend);
gboolean up_backend_kernel_can_hibernate (UpBackend *backend);
gboolean up_backend_has_encrypted_swap (UpBackend *backend);
gfloat up_backend_get_used_swap (UpBackend *backend);
G_END_DECLS

62
src/up-daemon.c
View file

@ -107,66 +107,6 @@ G_DEFINE_TYPE (UpDaemon, up_daemon, G_TYPE_OBJECT)
#define UP_DAEMON_ON_BATTERY_REFRESH_DEVICES_DELAY 1 /* seconds */
#define UP_DAEMON_POLL_BATTERY_NUMBER_TIMES 5
/**
* up_daemon_check_swap_space:
**/
static gfloat
up_daemon_check_swap_space (UpDaemon *daemon)
{
gchar *contents = NULL;
gchar **lines = NULL;
GError *error = NULL;
gchar **tokens;
gboolean ret;
guint active = 0;
guint swap_free = 0;
guint swap_total = 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]);
if (g_strcmp0 (tokens[0], "SwapTotal") == 0)
swap_total = atoi (tokens[len-2]);
else if (g_strcmp0 (tokens[0], "Active") == 0)
active = atoi (tokens[len-2]);
}
g_strfreev (tokens);
}
/* first check if we even have swap, if not consider all swap space used */
if (swap_total == 0) {
egg_debug ("no swap space found");
percentage = 100.0f;
goto out;
}
/* 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;
}
/**
* up_daemon_get_on_battery_local:
*
@ -952,7 +892,7 @@ up_daemon_init (UpDaemon *daemon)
/* do we have enough swap? */
if (daemon->priv->kernel_can_hibernate) {
waterline = up_daemon_check_swap_space (daemon);
waterline = up_backend_get_used_swap (daemon->priv->backend);
if (waterline < UP_DAEMON_SWAP_WATERLINE)
daemon->priv->hibernate_has_swap_space = TRUE;
else