49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
#pragma once
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <time.h>
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// 1500 = internet MTU
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#define RING_BUFFER_SIZE 1500*10
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#define ONE_SEC 1000000000L
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enum time_units {
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NANOSEC = 1L,
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MICROSEC = 1000L,
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MILISEC = 1000000L,
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SEC = 1000000000L
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};
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struct ring_buffer {
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char buffer[RING_BUFFER_SIZE];
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int head;
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int tail;
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};
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int ring_buffer_read(struct ring_buffer* rb, char* dest, int size);
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void ring_buffer_ack_read(struct ring_buffer* rb, int size);
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int ring_buffer_write(struct ring_buffer* rb, char* source, int size);
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int ring_buffer_free_space(struct ring_buffer* rb);
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int ring_buffer_used_space(struct ring_buffer* rb);
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int ring_gt(uint16_t v1, uint16_t v2);
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int ring_ge(uint16_t v1, uint16_t v2);
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int ring_lt(uint16_t v1, uint16_t v2);
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int ring_le(uint16_t v1, uint16_t v2);
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uint64_t elapsed_micros(struct timespec* t1, struct timespec* t2);
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void set_now(struct timespec *dest);
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uint8_t timespec_eq(struct timespec *t1, struct timespec *t2);
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uint8_t timespec_gt(struct timespec *t1, struct timespec *t2);
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uint8_t timespec_ge(struct timespec *t1, struct timespec *t2);
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uint8_t timespec_le(struct timespec *t1, struct timespec *t2);
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uint8_t timespec_lt(struct timespec *t1, struct timespec *t2);
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void timespec_diff(struct timespec *end, struct timespec *begin, struct timespec *result);
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void timespec_set_unit(struct timespec *t, uint64_t value, enum time_units unit);
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uint64_t timespec_get_unit(struct timespec *t, enum time_units unit);
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char* current_human_datetime();
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