Merge branch 'master' of https://shmqueue

wangzhengquan

2020-08-23 3c4b18f39e06a09a05a13476f212d4deaa1e4707

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ipcrm -a
rm *.txt
./test_lostdata
sort -n c.txt  > c1.txt
sort -n p.txt  > p1.txt
diff -u p1.txt c1.txt