xnu-7195.101.1.tar.gz

[apple/xnu.git] / bsd / vfs / vfs_cache.c

diff --git a/bsd/vfs/vfs_cache.c b/bsd/vfs/vfs_cache.c
index 9d4ed9a6d326a9e31282027f8fb1b35835be2db0..8f75a27361102cf240fbea8639f9a558e6ff455c 100644 (file)
--- a/bsd/vfs/vfs_cache.c
+++ b/bsd/vfs/vfs_cache.c
@@ -145,21 +145,15 @@ struct  nchstats nchstats;              /* cache effectiveness statistics */
 
 
 /* vars for name cache list lock */
-lck_grp_t * namecache_lck_grp;
-lck_grp_attr_t * namecache_lck_grp_attr;
-lck_attr_t * namecache_lck_attr;
+static LCK_GRP_DECLARE(namecache_lck_grp, "Name Cache");
+static LCK_RW_DECLARE(namecache_rw_lock, &namecache_lck_grp);
 
-lck_grp_t * strcache_lck_grp;
-lck_grp_attr_t * strcache_lck_grp_attr;
-lck_attr_t * strcache_lck_attr;
+static LCK_GRP_DECLARE(strcache_lck_grp, "String Cache");
+static LCK_ATTR_DECLARE(strcache_lck_attr, 0, 0);
+LCK_RW_DECLARE_ATTR(strtable_rw_lock, &strcache_lck_grp, &strcache_lck_attr);
 
-lck_grp_t * rootvnode_lck_grp;
-lck_grp_attr_t * rootvnode_lck_grp_attr;
-lck_attr_t * rootvnode_lck_attr;
-
-lck_rw_t  * namecache_rw_lock;
-lck_rw_t  * strtable_rw_lock;
-lck_rw_t  * rootvnode_rw_lock;
+static LCK_GRP_DECLARE(rootvnode_lck_grp, "rootvnode");
+LCK_RW_DECLARE(rootvnode_rw_lock, &rootvnode_lck_grp);
 
 #define NUM_STRCACHE_LOCKS 1024
 
@@ -2400,8 +2394,6 @@ init_crc32(void)
 void
 nchinit(void)
 {
-       int     i;
-
        desiredNegNodes = (desiredvnodes / 10);
        desiredNodes = desiredvnodes + desiredNegNodes;
 
@@ -2416,61 +2408,27 @@ nchinit(void)
 
        init_string_table();
 
-       /* Allocate name cache lock group attribute and group */
-       namecache_lck_grp_attr = lck_grp_attr_alloc_init();
-
-       namecache_lck_grp = lck_grp_alloc_init("Name Cache", namecache_lck_grp_attr);
-
-       /* Allocate name cache lock attribute */
-       namecache_lck_attr = lck_attr_alloc_init();
-
-       /* Allocate name cache lock */
-       namecache_rw_lock = lck_rw_alloc_init(namecache_lck_grp, namecache_lck_attr);
-
-
-       /* Allocate string cache lock group attribute and group */
-       strcache_lck_grp_attr = lck_grp_attr_alloc_init();
-
-       strcache_lck_grp = lck_grp_alloc_init("String Cache", strcache_lck_grp_attr);
-
-       /* Allocate string cache lock attribute */
-       strcache_lck_attr = lck_attr_alloc_init();
-
-       /* Allocate string cache lock */
-       strtable_rw_lock = lck_rw_alloc_init(strcache_lck_grp, strcache_lck_attr);
-
-       for (i = 0; i < NUM_STRCACHE_LOCKS; i++) {
-               lck_mtx_init(&strcache_mtx_locks[i], strcache_lck_grp, strcache_lck_attr);
+       for (int i = 0; i < NUM_STRCACHE_LOCKS; i++) {
+               lck_mtx_init(&strcache_mtx_locks[i], &strcache_lck_grp, &strcache_lck_attr);
        }
-
-       /* Allocate root vnode lock group attribute and group */
-       rootvnode_lck_grp_attr = lck_grp_attr_alloc_init();
-
-       rootvnode_lck_grp = lck_grp_alloc_init("rootvnode", rootvnode_lck_grp_attr);
-
-       /* Allocate rootvnode lock attribute */
-       rootvnode_lck_attr = lck_attr_alloc_init();
-
-       /* Allocate rootvnode lock */
-       rootvnode_rw_lock = lck_rw_alloc_init(rootvnode_lck_grp, rootvnode_lck_attr);
 }
 
 void
 name_cache_lock_shared(void)
 {
-       lck_rw_lock_shared(namecache_rw_lock);
+       lck_rw_lock_shared(&namecache_rw_lock);
 }
 
 void
 name_cache_lock(void)
 {
-       lck_rw_lock_exclusive(namecache_rw_lock);
+       lck_rw_lock_exclusive(&namecache_rw_lock);
 }
 
 void
 name_cache_unlock(void)
 {
-       lck_rw_done(namecache_rw_lock);
+       lck_rw_done(&namecache_rw_lock);
 }
 
 
@@ -2718,10 +2676,10 @@ resize_string_ref_table(void)
         * the lock exclusively in case some other thread
         * beat us to the punch
         */
-       lck_rw_lock_exclusive(strtable_rw_lock);
+       lck_rw_lock_exclusive(&strtable_rw_lock);
 
        if (4 * filled_buckets < ((string_table_mask + 1) * 3)) {
-               lck_rw_done(strtable_rw_lock);
+               lck_rw_done(&strtable_rw_lock);
                return;
        }
        assert(string_table_mask < INT32_MAX);
@@ -2729,7 +2687,7 @@ resize_string_ref_table(void)
 
        if (new_table == NULL) {
                printf("failed to resize the hash table.\n");
-               lck_rw_done(strtable_rw_lock);
+               lck_rw_done(&strtable_rw_lock);
                return;
        }
 
@@ -2755,7 +2713,7 @@ resize_string_ref_table(void)
                        LIST_INSERT_HEAD(head, entry, hash_chain);
                }
        }
-       lck_rw_done(strtable_rw_lock);
+       lck_rw_done(&strtable_rw_lock);
 
        FREE(old_table, M_CACHE);
 }
@@ -2806,17 +2764,17 @@ add_name_internal(const char *name, uint32_t len, u_int hashval, boolean_t need_
         * if someone else decides to grow the pool they
         * will take this lock exclusively
         */
-       lck_rw_lock_shared(strtable_rw_lock);
+       lck_rw_lock_shared(&strtable_rw_lock);
 
        /*
         * If the table gets more than 3/4 full, resize it
         */
        if (4 * filled_buckets >= ((string_table_mask + 1) * 3)) {
-               lck_rw_done(strtable_rw_lock);
+               lck_rw_done(&strtable_rw_lock);
 
                resize_string_ref_table();
 
-               lck_rw_lock_shared(strtable_rw_lock);
+               lck_rw_lock_shared(&strtable_rw_lock);
        }
        hash_index = hashval & string_table_mask;
        lock_index = hash_index % NUM_STRCACHE_LOCKS;
@@ -2853,7 +2811,7 @@ add_name_internal(const char *name, uint32_t len, u_int hashval, boolean_t need_
        }
 
        lck_mtx_unlock(&strcache_mtx_locks[lock_index]);
-       lck_rw_done(strtable_rw_lock);
+       lck_rw_done(&strtable_rw_lock);
 
        return (const char *)entry->str;
 }
@@ -2876,7 +2834,7 @@ vfs_removename(const char *nameref)
         * if someone else decides to grow the pool they
         * will take this lock exclusively
         */
-       lck_rw_lock_shared(strtable_rw_lock);
+       lck_rw_lock_shared(&strtable_rw_lock);
        /*
         * must compute the head behind the table lock
         * since the size and location of the table
@@ -2907,7 +2865,7 @@ vfs_removename(const char *nameref)
                }
        }
        lck_mtx_unlock(&strcache_mtx_locks[lock_index]);
-       lck_rw_done(strtable_rw_lock);
+       lck_rw_done(&strtable_rw_lock);
 
        kheap_free_addr(KHEAP_DEFAULT, entry);
 
@@ -2923,7 +2881,7 @@ dump_string_table(void)
        string_t          *entry;
        u_long            i;
 
-       lck_rw_lock_shared(strtable_rw_lock);
+       lck_rw_lock_shared(&strtable_rw_lock);
 
        for (i = 0; i <= string_table_mask; i++) {
                head = &string_ref_table[i];
@@ -2931,6 +2889,6 @@ dump_string_table(void)
                        printf("%6d - %s\n", entry->refcount, entry->str);
                }
        }
-       lck_rw_done(strtable_rw_lock);
+       lck_rw_done(&strtable_rw_lock);
 }
 #endif  /* DUMP_STRING_TABLE */