diff options
Diffstat (limited to 'protocols/Telegram/tgl/libevent/minheap-internal.h')
-rw-r--r-- | protocols/Telegram/tgl/libevent/minheap-internal.h | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/protocols/Telegram/tgl/libevent/minheap-internal.h b/protocols/Telegram/tgl/libevent/minheap-internal.h deleted file mode 100644 index b3b6f1fd49..0000000000 --- a/protocols/Telegram/tgl/libevent/minheap-internal.h +++ /dev/null @@ -1,188 +0,0 @@ -/* - * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson - * - * Copyright (c) 2006 Maxim Yegorushkin <maxim.yegorushkin@gmail.com> - * - * 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 MINHEAP_INTERNAL_H_INCLUDED_ -#define MINHEAP_INTERNAL_H_INCLUDED_ - -#include "event2/event-config.h" -#include "evconfig-private.h" -#include "event2/event.h" -#include "event2/event_struct.h" -#include "event2/util.h" -#include "util-internal.h" -#include "mm-internal.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_elt_is_top_(const struct event *e); -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_adjust_(min_heap_t *s, struct event* e); -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_up_unconditional_(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); - -#define min_heap_elem_greater(a, b) \ - (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) mm_free(s->p); } -void min_heap_elem_init_(struct event* e) { e->ev_timeout_pos.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->ev_timeout_pos.min_heap_idx = -1; - return e; - } - return 0; -} - -int min_heap_elt_is_top_(const struct event *e) -{ - return e->ev_timeout_pos.min_heap_idx == 0; -} - -int min_heap_erase_(min_heap_t* s, struct event* e) -{ - if (-1 != e->ev_timeout_pos.min_heap_idx) - { - struct event *last = s->p[--s->n]; - unsigned parent = (e->ev_timeout_pos.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->ev_timeout_pos.min_heap_idx > 0 && min_heap_elem_greater(s->p[parent], last)) - min_heap_shift_up_unconditional_(s, e->ev_timeout_pos.min_heap_idx, last); - else - min_heap_shift_down_(s, e->ev_timeout_pos.min_heap_idx, last); - e->ev_timeout_pos.min_heap_idx = -1; - return 0; - } - return -1; -} - -int min_heap_adjust_(min_heap_t *s, struct event *e) -{ - if (-1 == e->ev_timeout_pos.min_heap_idx) { - return min_heap_push_(s, e); - } else { - unsigned parent = (e->ev_timeout_pos.min_heap_idx - 1) / 2; - /* The position of e has changed; we shift it up or down - * as needed. We can't need to do both. */ - if (e->ev_timeout_pos.min_heap_idx > 0 && min_heap_elem_greater(s->p[parent], e)) - min_heap_shift_up_unconditional_(s, e->ev_timeout_pos.min_heap_idx, e); - else - min_heap_shift_down_(s, e->ev_timeout_pos.min_heap_idx, e); - return 0; - } -} - -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**)mm_realloc(s->p, a * sizeof *p))) - return -1; - s->p = p; - s->a = a; - } - return 0; -} - -void min_heap_shift_up_unconditional_(min_heap_t* s, unsigned hole_index, struct event* e) -{ - unsigned parent = (hole_index - 1) / 2; - do - { - (s->p[hole_index] = s->p[parent])->ev_timeout_pos.min_heap_idx = hole_index; - hole_index = parent; - parent = (hole_index - 1) / 2; - } while (hole_index && min_heap_elem_greater(s->p[parent], e)); - (s->p[hole_index] = e)->ev_timeout_pos.min_heap_idx = hole_index; -} - -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])->ev_timeout_pos.min_heap_idx = hole_index; - hole_index = parent; - parent = (hole_index - 1) / 2; - } - (s->p[hole_index] = e)->ev_timeout_pos.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])->ev_timeout_pos.min_heap_idx = hole_index; - hole_index = min_child; - min_child = 2 * (hole_index + 1); - } - (s->p[hole_index] = e)->ev_timeout_pos.min_heap_idx = hole_index; -} - -#endif /* MINHEAP_INTERNAL_H_INCLUDED_ */ |