forked from haiwan/sledge
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32 lines
981 B
32 lines
981 B
#pragma once
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#include <stdint.h>
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#include "lock.h"
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/* Should be Power of 2! */
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#define PERF_WINDOW_BUFFER_SIZE 16
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#if ((PERF_WINDOW_BUFFER_SIZE == 0) || (PERF_WINDOW_BUFFER_SIZE & (PERF_WINDOW_BUFFER_SIZE - 1)) != 0)
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#error "PERF_WINDOW_BUFFER_SIZE must be power of 2!"
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#endif
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/*
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* The by_duration array sorts the last N executions by execution time
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* The by_termination array acts as a circular buffer that maps to indices in the by_duration array
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*
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* by_termination ensures that the when the circular buffer is full, the oldest data in both arrays is
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* overwritten, providing a sorted circular buffer
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*/
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struct execution_node {
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uint64_t execution_time;
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uint16_t by_termination_idx; /* Reverse idx of the associated by_termination bin. Used for swaps! */
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};
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struct perf_window {
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struct execution_node by_duration[PERF_WINDOW_BUFFER_SIZE];
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uint16_t by_termination[PERF_WINDOW_BUFFER_SIZE];
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uint64_t count;
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lock_t lock;
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};
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