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[tattlekey] / client / press.c
1 #include "press.h"
2
3 static uint32_t next_send(press_t *s) {
4 return s->timestamp + (1 << s->send_count) - 1;
5 }
6
7 bool next_send_less_than(void *user_data, pheap_node_id_t a,
8 pheap_node_id_t b) {
9 press_t *presses = (press_t *)user_data;
10 return next_send(&presses[a]) < next_send(&presses[b]);
11 }
12
13 void create_press(press_t *presses, pheap_t *sleeps_heap, uint32_t timestamp,
14 u16_t seq) {
15 pheap_node_id_t i = ph_new_node(sleeps_heap);
16 if (i == 0) {
17 /* TODO: Don't drop new presses just because sleeps_heap is full of old
18 * presses. */
19 return;
20 }
21 presses[i].timestamp = timestamp;
22 presses[i].seq = seq;
23 presses[i].send_count = 0;
24 ph_insert_node(sleeps_heap, i);
25 }
26
27 int32_t next_scheduled_send(press_t *presses, pheap_t *sleeps_heap) {
28 pheap_node_id_t i = ph_peek_head(sleeps_heap);
29 if (i == 0)
30 return -1;
31 return next_send(&presses[i]);
32 }