Index: third_party/libevent/min_heap.h |
diff --git a/third_party/libevent/min_heap.h b/third_party/libevent/min_heap.h |
deleted file mode 100644 |
index 14d8e370c2b5644b18203b9085fbca0d415764c1..0000000000000000000000000000000000000000 |
--- a/third_party/libevent/min_heap.h |
+++ /dev/null |
@@ -1,149 +0,0 @@ |
-/* |
- * Copyright (c) 2006 Maxim Yegorushkin <maxim.yegorushkin@gmail.com> |
- * All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions |
- * are met: |
- * 1. Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * 2. Redistributions in binary form must reproduce the above copyright |
- * notice, this list of conditions and the following disclaimer in the |
- * documentation and/or other materials provided with the distribution. |
- * 3. The name of the author may not be used to endorse or promote products |
- * derived from this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- */ |
-#ifndef _MIN_HEAP_H_ |
-#define _MIN_HEAP_H_ |
- |
-#include "event.h" |
-#include "evutil.h" |
- |
-typedef struct min_heap |
-{ |
- struct event** p; |
- unsigned n, a; |
-} min_heap_t; |
- |
-static inline void min_heap_ctor(min_heap_t* s); |
-static inline void min_heap_dtor(min_heap_t* s); |
-static inline void min_heap_elem_init(struct event* e); |
-static inline int min_heap_elem_greater(struct event *a, struct event *b); |
-static inline int min_heap_empty(min_heap_t* s); |
-static inline unsigned min_heap_size(min_heap_t* s); |
-static inline struct event* min_heap_top(min_heap_t* s); |
-static inline int min_heap_reserve(min_heap_t* s, unsigned n); |
-static inline int min_heap_push(min_heap_t* s, struct event* e); |
-static inline struct event* min_heap_pop(min_heap_t* s); |
-static inline int min_heap_erase(min_heap_t* s, struct event* e); |
-static inline void min_heap_shift_up_(min_heap_t* s, unsigned hole_index, struct event* e); |
-static inline void min_heap_shift_down_(min_heap_t* s, unsigned hole_index, struct event* e); |
- |
-int min_heap_elem_greater(struct event *a, struct event *b) |
-{ |
- return evutil_timercmp(&a->ev_timeout, &b->ev_timeout, >); |
-} |
- |
-void min_heap_ctor(min_heap_t* s) { s->p = 0; s->n = 0; s->a = 0; } |
-void min_heap_dtor(min_heap_t* s) { if(s->p) free(s->p); } |
-void min_heap_elem_init(struct event* e) { e->min_heap_idx = -1; } |
-int min_heap_empty(min_heap_t* s) { return 0u == s->n; } |
-unsigned min_heap_size(min_heap_t* s) { return s->n; } |
-struct event* min_heap_top(min_heap_t* s) { return s->n ? *s->p : 0; } |
- |
-int min_heap_push(min_heap_t* s, struct event* e) |
-{ |
- if(min_heap_reserve(s, s->n + 1)) |
- return -1; |
- min_heap_shift_up_(s, s->n++, e); |
- return 0; |
-} |
- |
-struct event* min_heap_pop(min_heap_t* s) |
-{ |
- if(s->n) |
- { |
- struct event* e = *s->p; |
- min_heap_shift_down_(s, 0u, s->p[--s->n]); |
- e->min_heap_idx = -1; |
- return e; |
- } |
- return 0; |
-} |
- |
-int min_heap_erase(min_heap_t* s, struct event* e) |
-{ |
- if(((unsigned int)-1) != e->min_heap_idx) |
- { |
- struct event *last = s->p[--s->n]; |
- unsigned parent = (e->min_heap_idx - 1) / 2; |
- /* we replace e with the last element in the heap. We might need to |
- shift it upward if it is less than its parent, or downward if it is |
- greater than one or both its children. Since the children are known |
- to be less than the parent, it can't need to shift both up and |
- down. */ |
- if (e->min_heap_idx > 0 && min_heap_elem_greater(s->p[parent], last)) |
- min_heap_shift_up_(s, e->min_heap_idx, last); |
- else |
- min_heap_shift_down_(s, e->min_heap_idx, last); |
- e->min_heap_idx = -1; |
- return 0; |
- } |
- return -1; |
-} |
- |
-int min_heap_reserve(min_heap_t* s, unsigned n) |
-{ |
- if(s->a < n) |
- { |
- struct event** p; |
- unsigned a = s->a ? s->a * 2 : 8; |
- if(a < n) |
- a = n; |
- if(!(p = (struct event**)realloc(s->p, a * sizeof *p))) |
- return -1; |
- s->p = p; |
- s->a = a; |
- } |
- return 0; |
-} |
- |
-void min_heap_shift_up_(min_heap_t* s, unsigned hole_index, struct event* e) |
-{ |
- unsigned parent = (hole_index - 1) / 2; |
- while(hole_index && min_heap_elem_greater(s->p[parent], e)) |
- { |
- (s->p[hole_index] = s->p[parent])->min_heap_idx = hole_index; |
- hole_index = parent; |
- parent = (hole_index - 1) / 2; |
- } |
- (s->p[hole_index] = e)->min_heap_idx = hole_index; |
-} |
- |
-void min_heap_shift_down_(min_heap_t* s, unsigned hole_index, struct event* e) |
-{ |
- unsigned min_child = 2 * (hole_index + 1); |
- while(min_child <= s->n) |
- { |
- min_child -= min_child == s->n || min_heap_elem_greater(s->p[min_child], s->p[min_child - 1]); |
- if(!(min_heap_elem_greater(e, s->p[min_child]))) |
- break; |
- (s->p[hole_index] = s->p[min_child])->min_heap_idx = hole_index; |
- hole_index = min_child; |
- min_child = 2 * (hole_index + 1); |
- } |
- min_heap_shift_up_(s, hole_index, e); |
-} |
- |
-#endif /* _MIN_HEAP_H_ */ |