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authorUlrich Drepper <drepper@gmail.com>2011-02-05 20:07:27 -0500
committerUlrich Drepper <drepper@gmail.com>2011-02-05 20:07:27 -0500
commita4c7ea7bb8eed9a53c4c50a3b9b9ab324beb1419 (patch)
tree564c0b74f4820c2c77376901c480e33544046b62 /nscd/servicescache.c
parenta0bf67cca2b7de3a745ab5cf0f9d6e74078d57af (diff)
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Schedule nscd cache pruning more accurately fromr re-added values.
Diffstat (limited to 'nscd/servicescache.c')
-rw-r--r--nscd/servicescache.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/nscd/servicescache.c b/nscd/servicescache.c
index dc98d30..2dd1cc5 100644
--- a/nscd/servicescache.c
+++ b/nscd/servicescache.c
@@ -1,5 +1,5 @@
/* Cache handling for services lookup.
- Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2008, 2009, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@drepper.com>, 2007.
@@ -61,7 +61,7 @@ static const serv_response_header notfound =
};
-static void
+static time_t
cache_addserv (struct database_dyn *db, int fd, request_header *req,
const void *key, struct servent *serv, uid_t owner,
struct hashentry *const he, struct datahead *dh, int errval)
@@ -81,6 +81,7 @@ cache_addserv (struct database_dyn *db, int fd, request_header *req,
assert (offsetof (struct dataset, resp) == offsetof (struct datahead, data));
+ time_t timeout = MAX_TIMEOUT_VALUE;
if (serv == NULL)
{
if (he != NULL && errval == EAGAIN)
@@ -92,6 +93,9 @@ cache_addserv (struct database_dyn *db, int fd, request_header *req,
/* Do not reset the value if we never not reload the record. */
dh->nreloads = reload_count - 1;
+ /* Reload with the same time-to-live value. */
+ timeout = dh->timeout = t + db->postimeout;
+
written = total = 0;
}
else
@@ -115,7 +119,7 @@ cache_addserv (struct database_dyn *db, int fd, request_header *req,
dataset->head.usable = true;
/* Compute the timeout time. */
- dataset->head.timeout = t + db->negtimeout;
+ timeout = dataset->head.timeout = t + db->negtimeout;
/* This is the reply. */
memcpy (&dataset->resp, &notfound, total);
@@ -203,7 +207,7 @@ cache_addserv (struct database_dyn *db, int fd, request_header *req,
dataset->head.usable = true;
/* Compute the timeout time. */
- dataset->head.timeout = t + db->postimeout;
+ timeout = dataset->head.timeout = t + db->postimeout;
dataset->resp.version = NSCD_VERSION;
dataset->resp.found = 1;
@@ -328,6 +332,8 @@ cache_addserv (struct database_dyn *db, int fd, request_header *req,
dbg_log (_("short write in %s: %s"), __FUNCTION__,
strerror_r (errno, buf, sizeof (buf)));
}
+
+ return timeout;
}
@@ -354,7 +360,7 @@ lookup (int type, char *key, struct servent *resultbufp, char *buffer,
}
-static void
+static time_t
addservbyX (struct database_dyn *db, int fd, request_header *req,
char *key, uid_t uid, struct hashentry *he, struct datahead *dh)
{
@@ -409,10 +415,12 @@ addservbyX (struct database_dyn *db, int fd, request_header *req,
buffer = (char *) extend_alloca (buffer, buflen, 2 * buflen);
}
- cache_addserv (db, fd, req, key, serv, uid, he, dh, errval);
+ time_t timeout = cache_addserv (db, fd, req, key, serv, uid, he, dh, errval);
if (use_malloc)
free (buffer);
+
+ return timeout;
}
@@ -424,7 +432,7 @@ addservbyname (struct database_dyn *db, int fd, request_header *req,
}
-void
+time_t
readdservbyname (struct database_dyn *db, struct hashentry *he,
struct datahead *dh)
{
@@ -434,7 +442,7 @@ readdservbyname (struct database_dyn *db, struct hashentry *he,
.key_len = he->len
};
- addservbyX (db, -1, &req, db->data + he->key, he->owner, he, dh);
+ return addservbyX (db, -1, &req, db->data + he->key, he->owner, he, dh);
}
@@ -446,7 +454,7 @@ addservbyport (struct database_dyn *db, int fd, request_header *req,
}
-void
+time_t
readdservbyport (struct database_dyn *db, struct hashentry *he,
struct datahead *dh)
{
@@ -456,5 +464,5 @@ readdservbyport (struct database_dyn *db, struct hashentry *he,
.key_len = he->len
};
- addservbyX (db, -1, &req, db->data + he->key, he->owner, he, dh);
+ return addservbyX (db, -1, &req, db->data + he->key, he->owner, he, dh);
}