37 lines
983 B
C++
37 lines
983 B
C++
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#include <time.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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int main(int argc, char **argv)
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{
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if (argc != 2)
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{
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printf("Usage: %s <id>\n", argv[0]);
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return -1;
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}
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uint64_t id = atoll(argv[1]);
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uint64_t sequence = id & 0x7FFF;
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uint64_t time_relative = (id >> 15) & 0xFFFFFFF;
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uint64_t seed = (id >> 43) & 0xFFFFF;
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uint64_t thread_id = seed & 0xFF;
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uint64_t instance_id = (seed >> 8) & 0xFFF;
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printf("id: %lu, seed: %lu, instance_id: %lu, thread_id: %lu, time_relative: %lu, sequence: %lu\n", id, seed, instance_id, thread_id, time_relative, sequence);
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#define MAX_ID_BASE_TIME (268435456L)
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for (int i = 6; i < 10; i++)
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{
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char buff[64];
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time_t tt = MAX_ID_BASE_TIME * i + time_relative;
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struct tm *tm = localtime(&tt);
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strftime(buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", tm);
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printf("\ttime_period * %d + time_relative => %s\n", i, buff);
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}
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return 0;
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}
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