aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/mesa/main/hash.c
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/mesa/main/hash.c')
-rw-r--r--mesalib/src/mesa/main/hash.c89
1 files changed, 80 insertions, 9 deletions
diff --git a/mesalib/src/mesa/main/hash.c b/mesalib/src/mesa/main/hash.c
index 4c92005e0..23018e9da 100644
--- a/mesalib/src/mesa/main/hash.c
+++ b/mesalib/src/mesa/main/hash.c
@@ -194,15 +194,55 @@ _mesa_HashLookup(struct _mesa_HashTable *table, GLuint key)
/**
- * Insert a key/pointer pair into the hash table.
- * If an entry with this key already exists we'll replace the existing entry.
- *
+ * Lookup an entry in the hash table without locking the mutex.
+ *
+ * The hash table mutex must be locked manually by calling
+ * _mesa_HashLockMutex() before calling this function.
+ *
+ * \param table the hash table.
+ * \param key the key.
+ *
+ * \return pointer to user's data or NULL if key not in table
+ */
+void *
+_mesa_HashLookupLocked(struct _mesa_HashTable *table, GLuint key)
+{
+ return _mesa_HashLookup_unlocked(table, key);
+}
+
+
+/**
+ * Lock the hash table mutex.
+ *
+ * This function should be used when multiple objects need
+ * to be looked up in the hash table, to avoid having to lock
+ * and unlock the mutex each time.
+ *
* \param table the hash table.
- * \param key the key (not zero).
- * \param data pointer to user data.
*/
void
-_mesa_HashInsert(struct _mesa_HashTable *table, GLuint key, void *data)
+_mesa_HashLockMutex(struct _mesa_HashTable *table)
+{
+ assert(table);
+ mtx_lock(&table->Mutex);
+}
+
+
+/**
+ * Unlock the hash table mutex.
+ *
+ * \param table the hash table.
+ */
+void
+_mesa_HashUnlockMutex(struct _mesa_HashTable *table)
+{
+ assert(table);
+ mtx_unlock(&table->Mutex);
+}
+
+
+static inline void
+_mesa_HashInsert_unlocked(struct _mesa_HashTable *table, GLuint key, void *data)
{
uint32_t hash = uint_hash(key);
struct hash_entry *entry;
@@ -210,8 +250,6 @@ _mesa_HashInsert(struct _mesa_HashTable *table, GLuint key, void *data)
assert(table);
assert(key);
- mtx_lock(&table->Mutex);
-
if (key > table->MaxKey)
table->MaxKey = key;
@@ -225,11 +263,44 @@ _mesa_HashInsert(struct _mesa_HashTable *table, GLuint key, void *data)
_mesa_hash_table_insert(table->ht, hash, uint_key(key), data);
}
}
+}
- mtx_unlock(&table->Mutex);
+
+/**
+ * Insert a key/pointer pair into the hash table without locking the mutex.
+ * If an entry with this key already exists we'll replace the existing entry.
+ *
+ * The hash table mutex must be locked manually by calling
+ * _mesa_HashLockMutex() before calling this function.
+ *
+ * \param table the hash table.
+ * \param key the key (not zero).
+ * \param data pointer to user data.
+ */
+void
+_mesa_HashInsertLocked(struct _mesa_HashTable *table, GLuint key, void *data)
+{
+ _mesa_HashInsert_unlocked(table, key, data);
}
+/**
+ * Insert a key/pointer pair into the hash table.
+ * If an entry with this key already exists we'll replace the existing entry.
+ *
+ * \param table the hash table.
+ * \param key the key (not zero).
+ * \param data pointer to user data.
+ */
+void
+_mesa_HashInsert(struct _mesa_HashTable *table, GLuint key, void *data)
+{
+ assert(table);
+ mtx_lock(&table->Mutex);
+ _mesa_HashInsert_unlocked(table, key, data);
+ mtx_unlock(&table->Mutex);
+}
+
/**
* Remove an entry from the hash table.