guard shm alloc; rm OnWrite,dup lock in shm queue.

lichao

2021-04-30 3b93dc0dc34008cf25b2b12f6b026b3d9e4ed623

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*.un~
build/
debug/
release/
Makefile
utest/utest
*.bak
gmon.out
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
.idea