C++ shared memory leak, how to clear shared memory?

最新推荐文章于 2025-01-11 19:13:55 发布

Bruce-Lan

最新推荐文章于 2025-01-11 19:13:55 发布

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本文提供了一个bash脚本，用于在程序终止时手动清除Mac Pro上的共享内存、信号量和消息队列，确保资源的高效管理和释放。

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http://stackoverflow.com/questions/7773276/c-shared-memory-leak-how-to-clear-shared-memory

You could always run a script after termination of your program to manually clear the shared memory, semaphores, etc. on your system (mine is a Mac Pro running 10.8). I have inserted a script I use for this when running programs that use QSharedMemory, and use it when the program quits unexpectedly and leaves the shared memory instances "hanging".

Keep in mind this will remove all shared memory instances associated with your user name. If you have multiple programs running and using shared memory instances, you should either wait until every program is done, or adjust the script as needed to only delete the shared memory instances that were created by your program.

#!/bin/bash

ME=$(whoami)

IPCS_S=$(ipcs -s | grep $ME | sed "s/  / /g" | cut -f2 -d " ")
IPCS_M=$(ipcs -m | grep $ME | sed "s/  / /g" | cut -f2 -d " ")
IPCS_Q=$(ipcs -q | grep $ME | sed "s/  / /g" | cut -f2 -d " ")

echo "Clearing Semaphores"
for id in $IPCS_S
do
    ipcrm -s $id
done

echo "Clearing Shared Memory"
for id in $IPCS_M 
do
    ipcrm -m $id
done

echo "Clearing Message Queues"
for id in $IPCS_Q
do
    ipcrm -q $id
done