Skip to content

R
riscv-gcc-1
Commit c7d30f66 by Dennis Glatting
Options

minor documentation changes. 

From-SVN: r2008
parent 893cc958
Showing with 36 additions and 32 deletions
gcc/objc/hash.h
......@@ -25,10 +25,13 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
the executable file might be covered by the GNU General Public License. */
/*
$Header: /usr/user/dennis_glatting/ObjC/c-runtime/dispatch.common/RCS/hash.h,v 0.9 1992/04/13 11:43:08 dennisg Exp dennisg $
$Author: dennisg $
$Date: 1992/04/13 11:43:08 $
$Header: /usr/user/dennis_glatting/ObjC/c-runtime/dispatch/RCS/hash.h,v 0.10 1992/08/18 04:46:58 dglattin Exp $
$Author: dglattin $
$Date: 1992/08/18 04:46:58 $
$Log: hash.h,v $
* Revision 0.10 1992/08/18 04:46:58 dglattin
* Saving a working version before release.
*
* Revision 0.9 1992/04/13 11:43:08 dennisg
* Check in after array version of run-time works.
* Expect more changes as hash version and other changes are made.
......@@ -148,7 +151,7 @@ typedef struct cache {
a power of two. */
entriesInHash, /* Current number of entries
in the hash table. */
mask; /* Precomputed mask. */
mask; /* Precomputed mask. */
/*
* Variables used to implement indexing
* through the hash table.
......@@ -156,16 +159,16 @@ typedef struct cache {
u_int lastBucket; /* Tracks which entry in the
array where the last value
was returned. */
/* Function used to compute
a hash code given a key.
This function is specified
when the hash table is
created. */
HashFunc hashFunc;
/* Function used to compare
two hash keys to determine
if they are equal. */
CompareFunc compareFunc;
/* Function used to compute
a hash code given a key.
This function is
specified when the hash
table is created. */
HashFunc hashFunc;
/* Function used to compare
two hash keys to determine
if they are equal. */
CompareFunc compareFunc;
} Cache, *Cache_t;
......@@ -211,9 +214,9 @@ hash_remove (Cache_t theCache, void* aKey);
CacheNode_t
hash_next (Cache_t theCache, CacheNode_t aCacheNode);
/* Used to return a value from
a hash table using a given
key. */
/* Used to return a value from
a hash table using a given
key. */
void*
hash_value_for_key (Cache_t theCache, void* aKey);
......@@ -227,37 +230,38 @@ hash_value_for_key (Cache_t theCache, void* aKey);
************************************************/
/* Calculate a hash code by
performing some manipulation
of the key pointer. */
performing some
manipulation of the key
pointer. */
static inline u_int
intHash(Cache_t theCache, void* aKey) {
assert(sizeof (u_int) == sizeof (aKey));
return ((u_int)aKey >> (sizeof(void*) - 1)) & theCache->mask ;
return ((u_int)aKey >> (sizeof(void*) - 1)) & theCache->mask ;
}
/* Calculate a hash code by
iterating over a NULL
terminate string. */
iterating over a NULL
terminate string. */
static inline u_int
strHash(Cache_t theCache, void* aKey) {
u_int ret = 0;
u_int ctr = 0;
u_int ret = 0;
u_int ctr = 0;
while(*(char*)aKey) {
ret ^= *(char*)aKey++ << ctr;
ctr = (ctr + 1) % sizeof(void*);
}
while(*(char*)aKey) {
ret ^= *(char*)aKey++ << ctr;
ctr = (ctr + 1) % sizeof(void*);
}
return ret & theCache->mask ;
return ret & theCache->mask ;
}
/* Compare two integers. */
/* Compare two integers. */
static inline int
intCmp(void* k1, void* k2) {
......@@ -266,12 +270,12 @@ intCmp(void* k1, void* k2) {
}
/* Compare two strings. */
/* Compare two strings. */
static inline int
strCmp(void* k1, void* k2) {
return !strcmp( k1, k2 );
return !strcmp( k1, k2 );
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment