共享内存清理

共享内存清理

 

ipcs 命令格式

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ipcs -h
ipcs provides information on ipc facilities for which you have read access.
Resource Specification:
        -m : shared_mem
        -q : messages
        -s : semaphores
        -a : all (default)
Output Format:
        -t : time
        -p : pid
        -c : creator
        -l : limits
        -u : summary
-i id [-s -q -m] : details on resource identified by id
usage : ipcs -asmq -tclup
        ipcs [-s -m -q] -i id
        ipcs -h for help.

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ipcrm 命令格式

usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]
          [-Q msgkey] [-M shmkey] [-S semkey] ... ]

 

***************脚本如下***************

#!/bin/sh

#清理共享内存

SHM_IDSUM=`ipcs -m | awk '{if ( $1 ~ /0x50002/ ) print $1}'`

for SHM_ID in $SHM_IDSUM; do
    echo "ipcrm -M $SHM_ID"
    ipcrm -M $SHM_ID
done

#清理 sem

SEM_IDSUM=`ipcs -s | awk '{if ( $1, /0x50002/ ) print $1}'`

for SEM_ID in $SEM_IDSUM; do
    echo "ipcrm -S $SEM_ID"
    ipcrm -S $SEM_ID
done