mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-22 12:32:40 +03:00
VFS GC: reimplement using GSList.
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin
parent
d451d5978f
commit
f45ea691db
197
lib/vfs/gc.c
197
lib/vfs/gc.c
@ -90,85 +90,111 @@ int vfs_timeout = 60; /* VFS timeout in seconds */
|
||||
|
||||
/*** file scope macro definitions ****************************************************************/
|
||||
|
||||
#define VFS_STAMPING(a) ((struct vfs_stamping *)(a))
|
||||
|
||||
/*** file scope type declarations ****************************************************************/
|
||||
|
||||
struct vfs_stamping
|
||||
{
|
||||
struct vfs_class *v;
|
||||
vfsid id;
|
||||
struct vfs_stamping *next;
|
||||
struct timeval time;
|
||||
};
|
||||
|
||||
/*** file scope variables ************************************************************************/
|
||||
|
||||
static struct vfs_stamping *stamps;
|
||||
static GSList *stamps = NULL;
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
/*** file scope functions ************************************************************************/
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
static void
|
||||
vfs_addstamp (struct vfs_class *v, vfsid id)
|
||||
{
|
||||
if (!(v->flags & VFSF_LOCAL) && id != NULL)
|
||||
{
|
||||
struct vfs_stamping *stamp;
|
||||
struct vfs_stamping *last_stamp = NULL;
|
||||
|
||||
for (stamp = stamps; stamp != NULL; stamp = stamp->next)
|
||||
{
|
||||
if (stamp->v == v && stamp->id == id)
|
||||
{
|
||||
gettimeofday (&(stamp->time), NULL);
|
||||
return;
|
||||
}
|
||||
last_stamp = stamp;
|
||||
}
|
||||
stamp = g_new (struct vfs_stamping, 1);
|
||||
stamp->v = v;
|
||||
stamp->id = id;
|
||||
|
||||
gettimeofday (&(stamp->time), NULL);
|
||||
stamp->next = 0;
|
||||
|
||||
if (stamps)
|
||||
{
|
||||
/* Add to the end */
|
||||
last_stamp->next = stamp;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Add first element */
|
||||
stamps = stamp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
/** Compare two timeval structures. Return 0 is t1 is less than t2. */
|
||||
|
||||
static inline int
|
||||
timeoutcmp (struct timeval *t1, struct timeval *t2)
|
||||
timeoutcmp (const struct timeval *t1, const struct timeval *t2)
|
||||
{
|
||||
return ((t1->tv_sec < t2->tv_sec)
|
||||
|| ((t1->tv_sec == t2->tv_sec) && (t1->tv_usec <= t2->tv_usec)));
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
static gint
|
||||
vfs_stamp_compare (gconstpointer a, gconstpointer b)
|
||||
{
|
||||
const struct vfs_stamping *vsa = (const struct vfs_stamping *) a;
|
||||
const struct vfs_stamping *vsb = (const struct vfs_stamping *) b;
|
||||
|
||||
return (vsa->v == vsb->v && vsa->id == vsb->id) ? 0 : 1;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
static void
|
||||
vfs_stamp_free (gpointer data, gpointer user_data)
|
||||
{
|
||||
struct vfs_stamping *stamp = VFS_STAMPING (data);
|
||||
|
||||
(void) user_data;
|
||||
|
||||
if (stamp->v->free != NULL)
|
||||
stamp->v->free (stamp->id);
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
static void
|
||||
vfs_stamp_expire (gpointer data, gpointer user_data)
|
||||
{
|
||||
struct vfs_stamping *stamp = VFS_STAMPING (data);
|
||||
|
||||
if (user_data == NULL || timeoutcmp (&(stamp->time), (struct timeval *) user_data) != 0)
|
||||
{
|
||||
vfs_stamp_free (data, NULL);
|
||||
vfs_rmstamp (stamp->v, stamp->id);
|
||||
}
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
static void
|
||||
vfs_addstamp (struct vfs_class *v, vfsid id)
|
||||
{
|
||||
if ((v->flags & VFSF_LOCAL) == 0 && id != NULL && !vfs_stamp (v, id))
|
||||
{
|
||||
struct vfs_stamping *stamp;
|
||||
|
||||
stamp = g_new (struct vfs_stamping, 1);
|
||||
stamp->v = v;
|
||||
stamp->id = id;
|
||||
gettimeofday (&(stamp->time), NULL);
|
||||
|
||||
stamps = g_slist_append (stamps, stamp);
|
||||
}
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
/*** public functions ****************************************************************************/
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
void
|
||||
gboolean
|
||||
vfs_stamp (struct vfs_class *v, vfsid id)
|
||||
{
|
||||
struct vfs_stamping *stamp;
|
||||
struct vfs_stamping what = {
|
||||
.v = v,
|
||||
.id = id
|
||||
};
|
||||
GSList *stamp;
|
||||
gboolean ret = FALSE;
|
||||
|
||||
for (stamp = stamps; stamp != NULL; stamp = stamp->next)
|
||||
if (stamp->v == v && stamp->id == id)
|
||||
{
|
||||
gettimeofday (&(stamp->time), NULL);
|
||||
return;
|
||||
}
|
||||
stamp = g_slist_find_custom (stamps, &what, vfs_stamp_compare);
|
||||
if (stamp != NULL)
|
||||
{
|
||||
gettimeofday (&(VFS_STAMPING (stamp->data)->time), NULL);
|
||||
ret = TRUE;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
@ -176,23 +202,18 @@ vfs_stamp (struct vfs_class *v, vfsid id)
|
||||
void
|
||||
vfs_rmstamp (struct vfs_class *v, vfsid id)
|
||||
{
|
||||
struct vfs_stamping *stamp, *st1;
|
||||
struct vfs_stamping what = {
|
||||
.v = v,
|
||||
.id = id
|
||||
};
|
||||
GSList *stamp;
|
||||
|
||||
for (stamp = stamps, st1 = NULL; stamp != NULL; st1 = stamp, stamp = stamp->next)
|
||||
if (stamp->v == v && stamp->id == id)
|
||||
{
|
||||
if (st1 == NULL)
|
||||
{
|
||||
stamps = stamp->next;
|
||||
}
|
||||
else
|
||||
{
|
||||
st1->next = stamp->next;
|
||||
}
|
||||
g_free (stamp);
|
||||
|
||||
return;
|
||||
}
|
||||
stamp = g_slist_find_custom (stamps, &what, vfs_stamp_compare);
|
||||
if (stamp != NULL)
|
||||
{
|
||||
g_free (stamp->data);
|
||||
stamps = g_slist_delete_link (stamps, stamp);
|
||||
}
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
@ -255,30 +276,24 @@ void
|
||||
vfs_expire (gboolean now)
|
||||
{
|
||||
static gboolean locked = FALSE;
|
||||
struct timeval lc_time;
|
||||
struct vfs_stamping *stamp, *st;
|
||||
|
||||
/* Avoid recursive invocation, e.g. when one of the free functions
|
||||
calls message */
|
||||
if (locked)
|
||||
return;
|
||||
|
||||
locked = TRUE;
|
||||
|
||||
gettimeofday (&lc_time, NULL);
|
||||
lc_time.tv_sec -= vfs_timeout;
|
||||
|
||||
for (stamp = stamps; stamp != NULL;)
|
||||
if (now)
|
||||
g_slist_foreach (stamps, vfs_stamp_expire, NULL);
|
||||
else
|
||||
{
|
||||
if (now || (timeoutcmp (&stamp->time, &lc_time)))
|
||||
{
|
||||
st = stamp->next;
|
||||
if (stamp->v->free)
|
||||
(*stamp->v->free) (stamp->id);
|
||||
vfs_rmstamp (stamp->v, stamp->id);
|
||||
stamp = st;
|
||||
}
|
||||
else
|
||||
stamp = stamp->next;
|
||||
struct timeval lc_time;
|
||||
|
||||
gettimeofday (&lc_time, NULL);
|
||||
lc_time.tv_sec -= vfs_timeout;
|
||||
|
||||
g_slist_foreach (stamps, vfs_stamp_expire, &lc_time);
|
||||
}
|
||||
|
||||
locked = FALSE;
|
||||
@ -294,7 +309,7 @@ vfs_expire (gboolean now)
|
||||
int
|
||||
vfs_timeouts (void)
|
||||
{
|
||||
return stamps ? 10 : 0;
|
||||
return stamps != NULL ? 10 : 0;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
@ -322,19 +337,9 @@ vfs_release_path (const vfs_path_t * vpath)
|
||||
void
|
||||
vfs_gc_done (void)
|
||||
{
|
||||
struct vfs_stamping *stamp, *st;
|
||||
|
||||
for (stamp = stamps, stamps = 0; stamp != NULL;)
|
||||
{
|
||||
if (stamp->v->free)
|
||||
(*stamp->v->free) (stamp->id);
|
||||
st = stamp->next;
|
||||
g_free (stamp);
|
||||
stamp = st;
|
||||
}
|
||||
|
||||
if (stamps)
|
||||
vfs_rmstamp (stamps->v, stamps->id);
|
||||
g_slist_foreach (stamps, vfs_stamp_free, NULL);
|
||||
g_slist_free_full (stamps, g_free);
|
||||
stamps = NULL;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------- */
|
||||
|
||||
@ -18,7 +18,7 @@
|
||||
|
||||
/*** declarations of public functions ************************************************************/
|
||||
|
||||
void vfs_stamp (struct vfs_class *vclass, vfsid id);
|
||||
gboolean vfs_stamp (struct vfs_class *vclass, vfsid id);
|
||||
void vfs_rmstamp (struct vfs_class *vclass, vfsid id);
|
||||
void vfs_stamp_create (struct vfs_class *vclass, vfsid id);
|
||||
void vfs_gc_done (void);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user