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91a2049877
Brief overview: TO configure tracking percentile metrics in rainerscript: User would need to define: - which percentile to track, such as [p50, p99, etc.] - window size - note, this correlates directly with memory usage to track the percentiles. To track a value, user would call built-in function `percentile_observe()` in their configurations to record an integer value, and percentile metrics would be emitted every impstats interval.
35 lines
869 B
C
35 lines
869 B
C
#include <stdlib.h>
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#include <stdbool.h>
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typedef int64_t ITEM;
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struct circ_buf {
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ITEM *buf;
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int head;
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int tail;
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};
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struct ringbuf_s {
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struct circ_buf cb;
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size_t size;
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};
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typedef struct ringbuf_s ringbuf_t;
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ringbuf_t* ringbuf_new(size_t count);
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void ringbuf_del(ringbuf_t *rb);
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int ringbuf_append(ringbuf_t *rb, ITEM item);
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int ringbuf_append_with_overwrite(ringbuf_t *rb, ITEM item);
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int ringbuf_read(ringbuf_t *rb, ITEM *buf, size_t count);
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size_t ringbuf_read_to_end(ringbuf_t *rb, ITEM *buf, size_t count);
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bool ringbuf_peek(ringbuf_t *rb, ITEM *item);
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size_t ringbuf_capacity(ringbuf_t *rb);
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/* ringbuffer tests */
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void ringbuf_init_test(void);
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void ringbuf_simple_test(void);
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void ringbuf_append_test(void);
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void ringbuf_append_wrap_test(void);
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void ringbuf_append_overwrite_test(void);
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void ringbuf_read_test(void);
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void ringbuf_read_to_end_test(void);
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