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authorUlrich Drepper <drepper@redhat.com>2004-09-08 15:46:42 +0000
committerUlrich Drepper <drepper@redhat.com>2004-09-08 15:46:42 +0000
commitc207f23b0b6b2d215be65e670d453768ad304247 (patch)
tree5d10943ec51bbda849db9ca2fdcc7b43feb2011c /nscd/mem.c
parent0a3ad40da92c0036bd3bd87949f7d7d9864c31c7 (diff)
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Update.
* nscd/connections.c: Implement r/o sharing of nscd's cache with client processes via shared memory. * nscd/nscd-client.h: Likewise. * nscd/nscd.h: Likewise. * nscd/nscd_conf.c: Likewise. * nscd/nscd_getgr_r.c: Likewise. * nscd/nscd_getpw_r.c: Likewise. * nscd/nscd_gethst_r.c: Likewise. * nscd/nscd.conf: Add new config parameters. * nscd/Makefile (aux): Add nscd_helper. * nscd/nscd_helper.c: New file. * nscd/mem.c (gc): Indicate beginning and end of the gc cycle. * nscd/hstcache.c: Simplify a lot. We cache only the request itself, no derived information. * connections.c (nscd_init): Fix bug in testing size of the persistent. * nis/Makefile (aux): Add nis_hash. * nis/nis_hash.c: New file. Split out from nis_util.c. * nis/nis_util.c: Move __nis_hash code in separate file. * csu/tst-atomic.c: Improve atomic_increment_val test which would not have found a ppc bug.
Diffstat (limited to 'nscd/mem.c')
-rw-r--r--nscd/mem.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/nscd/mem.c b/nscd/mem.c
index a4e3053..5207efc 100644
--- a/nscd/mem.c
+++ b/nscd/mem.c
@@ -230,6 +230,12 @@ gc (struct database_dyn *db)
++next_data;
+ /* Now we start modifying the data. Make sure all readers of the
+ data are aware of this and temporarily don't use the data. */
+ ++db->head->gc_cycle;
+ assert ((db->head->gc_cycle & 1) == 1);
+
+
/* We do not perform the move operations right away since the
he_data array is not sorted by the address of the data. */
struct moveinfo
@@ -445,6 +451,11 @@ gc (struct database_dyn *db)
msync (db->head, db->data + db->head->first_free - (char *) db->head,
MS_ASYNC);
+
+ /* Now we are done modifying the data. */
+ ++db->head->gc_cycle;
+ assert ((db->head->gc_cycle & 1) == 0);
+
/* We are done. */
out:
pthread_mutex_unlock (&db->memlock);