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- /*-
- * Copyright 2016 Vsevolod Stakhov
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #ifndef SRC_LIBUTIL_HEAP_H_
- #define SRC_LIBUTIL_HEAP_H_
-
- #include "config.h"
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /**
- * Binary minimal heap interface based on glib
- */
-
- struct rspamd_min_heap_elt {
- gpointer data;
- guint pri;
- guint idx;
- };
-
- struct rspamd_min_heap;
-
- /**
- * Creates min heap with the specified reserved size and compare function
- * @param reserved_size reserved size in elements
- * @return opaque minimal heap
- */
- struct rspamd_min_heap *rspamd_min_heap_create (gsize reserved_size);
-
- /**
- * Pushes an element to the heap. `pri` should be initialized to use this function,
- * `idx` is used internally by heap interface
- * @param heap heap structure
- * @param elt element to push
- */
- void rspamd_min_heap_push (struct rspamd_min_heap *heap,
- struct rspamd_min_heap_elt *elt);
-
- /**
- * Pops the minimum element from the heap and reorder the queue
- * @param heap heap structure
- * @return minimum element
- */
- struct rspamd_min_heap_elt *rspamd_min_heap_pop (struct rspamd_min_heap *heap);
-
- /**
- * Updates priority for the element. It must be in queue (so `idx` should be sane)
- * @param heap heap structure
- * @param elt element to update
- * @param npri new priority
- */
- void rspamd_min_heap_update_elt (struct rspamd_min_heap *heap,
- struct rspamd_min_heap_elt *elt, guint npri);
-
-
- /**
- * Removes element from the heap
- * @param heap
- * @param elt
- */
- void rspamd_min_heap_remove_elt (struct rspamd_min_heap *heap,
- struct rspamd_min_heap_elt *elt);
-
- /**
- * Destroys heap (elements are not destroyed themselves)
- * @param heap
- */
- void rspamd_min_heap_destroy (struct rspamd_min_heap *heap);
-
- /**
- * Returns element from the heap with the specified index
- * @param heap
- * @param idx
- * @return
- */
- struct rspamd_min_heap_elt *rspamd_min_heap_index (struct rspamd_min_heap *heap,
- guint idx);
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* SRC_LIBUTIL_HEAP_H_ */
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