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Handling of timers with bias.

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Timers that don't require maximum precision (most of them, actually) can be
triggered earlier or later within the bias interval.

To reduce wakeups by timers, the expire function now triggers not only all
timers that fall within the elapsed time, but also those whose bias falls
within this interval.
This commit is contained in:
Valentin Bartenev
2018-10-22 16:04:16 +03:00
parent b20e995e80
commit da0ef366dc
5 changed files with 30 additions and 23 deletions
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8
src/nxt_timer.h
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@@ -8,9 +8,9 @@
#define _NXT_TIMER_H_INCLUDED_
/* Valid values are between 1ms to 255ms. */
#define NXT_TIMER_DEFAULT_PRECISION 100
//#define NXT_TIMER_DEFAULT_PRECISION 1
/* Valid values are between 0ms to 255ms. */
#define NXT_TIMER_DEFAULT_BIAS 50
//#define NXT_TIMER_DEFAULT_BIAS 0
/*
@@ -25,7 +25,7 @@ typedef struct {
/* The rbtree node must be the first field. */
NXT_RBTREE_NODE (node);
uint8_t precision;
uint8_t bias;
uint16_t change:14;
uint16_t enabled:1;